./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c4f91361 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 ../../../trunk/examples/svcomp/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 0.2.3-dev-c4f9136-m [2023-11-23 14:46:39,232 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 14:46:39,316 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-23 14:46:39,321 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 14:46:39,322 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 14:46:39,349 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 14:46:39,350 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 14:46:39,351 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 14:46:39,352 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 14:46:39,355 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 14:46:39,356 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 14:46:39,356 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 14:46:39,357 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 14:46:39,358 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 14:46:39,359 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 14:46:39,359 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 14:46:39,359 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 14:46:39,360 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 14:46:39,360 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 14:46:39,360 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 14:46:39,360 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 14:46:39,361 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 14:46:39,361 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 14:46:39,362 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 14:46:39,362 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 14:46:39,362 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 14:46:39,362 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 14:46:39,363 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 14:46:39,364 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 14:46:39,364 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 14:46:39,365 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 14:46:39,365 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 14:46:39,365 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 14:46:39,366 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 14:46:39,366 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 14:46:39,366 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 14:46:39,366 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 14:46:39,367 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 14:46:39,367 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 14:46:39,367 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 14:46:39,367 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 14:46:39,368 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 14:46:39,368 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6604dbb2462dfab53c0d37d83d08add09bc53abffb53773fd7099f9e7acddff3 [2023-11-23 14:46:39,639 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 14:46:39,674 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 14:46:39,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 14:46:39,679 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 14:46:39,679 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 14:46:39,680 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i [2023-11-23 14:46:40,888 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 14:46:41,063 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 14:46:41,064 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i [2023-11-23 14:46:41,070 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c297ee0a8/7142c22ae7fb432690064a6488b6260f/FLAG1df336919 [2023-11-23 14:46:41,080 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c297ee0a8/7142c22ae7fb432690064a6488b6260f [2023-11-23 14:46:41,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 14:46:41,083 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 14:46:41,084 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 14:46:41,084 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 14:46:41,088 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 14:46:41,089 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:46:41" (1/1) ... [2023-11-23 14:46:41,090 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c93f84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:41, skipping insertion in model container [2023-11-23 14:46:41,090 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:46:41" (1/1) ... [2023-11-23 14:46:41,108 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 14:46:41,255 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i[919,932] [2023-11-23 14:46:41,278 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 14:46:41,286 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 14:46:41,301 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i[919,932] [2023-11-23 14:46:41,318 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 14:46:41,337 INFO L206 MainTranslator]: Completed translation [2023-11-23 14:46:41,338 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:41 WrapperNode [2023-11-23 14:46:41,338 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 14:46:41,339 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 14:46:41,339 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 14:46:41,339 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 14:46:41,345 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:41" (1/1) ... [2023-11-23 14:46:41,355 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:41" (1/1) ... [2023-11-23 14:46:41,375 INFO L138 Inliner]: procedures = 17, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2023-11-23 14:46:41,375 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 14:46:41,376 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 14:46:41,376 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 14:46:41,376 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 14:46:41,386 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:41" (1/1) ... [2023-11-23 14:46:41,386 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:41" (1/1) ... [2023-11-23 14:46:41,391 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:41" (1/1) ... [2023-11-23 14:46:41,416 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]. [2023-11-23 14:46:41,416 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:41" (1/1) ... [2023-11-23 14:46:41,416 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:41" (1/1) ... [2023-11-23 14:46:41,420 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:41" (1/1) ... [2023-11-23 14:46:41,423 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:41" (1/1) ... [2023-11-23 14:46:41,424 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:41" (1/1) ... [2023-11-23 14:46:41,425 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:41" (1/1) ... [2023-11-23 14:46:41,426 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 14:46:41,431 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 14:46:41,431 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 14:46:41,431 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 14:46:41,432 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:41" (1/1) ... [2023-11-23 14:46:41,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 14:46:41,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 14:46:41,465 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 14:46:41,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 14:46:41,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 14:46:41,514 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 14:46:41,515 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 14:46:41,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 14:46:41,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 14:46:41,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 14:46:41,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 14:46:41,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 14:46:41,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 14:46:41,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 14:46:41,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 14:46:41,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 14:46:41,518 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 14:46:41,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 14:46:41,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 14:46:41,600 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 14:46:41,602 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 14:46:41,731 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 14:46:41,764 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 14:46:41,764 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-23 14:46:41,765 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:46:41 BoogieIcfgContainer [2023-11-23 14:46:41,765 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 14:46:41,767 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 14:46:41,767 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 14:46:41,770 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 14:46:41,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:46:41" (1/3) ... [2023-11-23 14:46:41,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35023560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:46:41, skipping insertion in model container [2023-11-23 14:46:41,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:41" (2/3) ... [2023-11-23 14:46:41,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35023560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:46:41, skipping insertion in model container [2023-11-23 14:46:41,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:46:41" (3/3) ... [2023-11-23 14:46:41,772 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_4.i [2023-11-23 14:46:41,788 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 14:46:41,789 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 14:46:41,829 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 14:46:41,836 INFO L357 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, mHoare=true, 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;@25f7d995, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 14:46:41,836 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 14:46:41,840 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 20 states have internal predecessors, (28), 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) [2023-11-23 14:46:41,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-23 14:46:41,847 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 14:46:41,848 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 14:46:41,849 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 14:46:41,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 14:46:41,854 INFO L85 PathProgramCache]: Analyzing trace with hash -2035542436, now seen corresponding path program 1 times [2023-11-23 14:46:41,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 14:46:41,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701493277] [2023-11-23 14:46:41,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:46:41,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 14:46:41,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:46:42,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 14:46:42,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:46:42,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 14:46:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:46:42,163 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 14:46:42,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 14:46:42,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701493277] [2023-11-23 14:46:42,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701493277] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 14:46:42,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 14:46:42,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 14:46:42,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376824829] [2023-11-23 14:46:42,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 14:46:42,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 14:46:42,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 14:46:42,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 14:46:42,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 14:46:42,210 INFO L87 Difference]: Start difference. First operand has 27 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 20 states have internal predecessors, (28), 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 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2023-11-23 14:46:42,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 14:46:42,259 INFO L93 Difference]: Finished difference Result 53 states and 80 transitions. [2023-11-23 14:46:42,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 14:46:42,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 19 [2023-11-23 14:46:42,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 14:46:42,269 INFO L225 Difference]: With dead ends: 53 [2023-11-23 14:46:42,270 INFO L226 Difference]: Without dead ends: 26 [2023-11-23 14:46:42,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 14:46:42,289 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 58 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 [2023-11-23 14:46:42,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 58 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 14:46:42,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-11-23 14:46:42,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-11-23 14:46:42,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 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) [2023-11-23 14:46:42,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2023-11-23 14:46:42,348 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 19 [2023-11-23 14:46:42,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 14:46:42,348 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2023-11-23 14:46:42,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2023-11-23 14:46:42,348 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2023-11-23 14:46:42,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-23 14:46:42,349 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 14:46:42,350 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 14:46:42,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 14:46:42,350 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 14:46:42,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 14:46:42,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1289629987, now seen corresponding path program 1 times [2023-11-23 14:46:42,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 14:46:42,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091712305] [2023-11-23 14:46:42,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:46:42,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 14:46:42,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:46:42,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 14:46:42,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:46:42,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 14:46:42,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:46:42,505 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 14:46:42,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 14:46:42,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091712305] [2023-11-23 14:46:42,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091712305] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 14:46:42,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842510405] [2023-11-23 14:46:42,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:46:42,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:46:42,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 14:46:42,516 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) [2023-11-23 14:46:42,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 14:46:42,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:46:42,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 14:46:42,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 14:46:42,794 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 14:46:42,795 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 14:46:42,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842510405] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 14:46:42,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 14:46:42,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2023-11-23 14:46:42,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473808831] [2023-11-23 14:46:42,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 14:46:42,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 14:46:42,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 14:46:42,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 14:46:42,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-23 14:46:42,802 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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) [2023-11-23 14:46:42,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 14:46:42,942 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2023-11-23 14:46:42,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 14:46:42,943 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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 20 [2023-11-23 14:46:42,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 14:46:42,945 INFO L225 Difference]: With dead ends: 35 [2023-11-23 14:46:42,945 INFO L226 Difference]: Without dead ends: 33 [2023-11-23 14:46:42,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-23 14:46:42,948 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 11 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 14:46:42,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 88 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 14:46:42,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-11-23 14:46:42,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2023-11-23 14:46:42,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 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) [2023-11-23 14:46:42,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2023-11-23 14:46:42,963 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 20 [2023-11-23 14:46:42,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 14:46:42,964 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2023-11-23 14:46:42,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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) [2023-11-23 14:46:42,964 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2023-11-23 14:46:42,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-23 14:46:42,965 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 14:46:42,965 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 14:46:42,978 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-23 14:46:43,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:46:43,173 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 14:46:43,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 14:46:43,173 INFO L85 PathProgramCache]: Analyzing trace with hash -698402714, now seen corresponding path program 1 times [2023-11-23 14:46:43,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 14:46:43,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171070519] [2023-11-23 14:46:43,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:46:43,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 14:46:43,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:46:43,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 14:46:43,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:46:43,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 14:46:43,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:46:43,308 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 14:46:43,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 14:46:43,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171070519] [2023-11-23 14:46:43,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171070519] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 14:46:43,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725721230] [2023-11-23 14:46:43,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:46:43,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:46:43,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 14:46:43,315 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) [2023-11-23 14:46:43,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 14:46:43,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:46:43,373 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 14:46:43,375 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 14:46:43,409 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 14:46:43,409 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 14:46:43,506 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 14:46:43,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725721230] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 14:46:43,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 14:46:43,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-11-23 14:46:43,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441022168] [2023-11-23 14:46:43,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 14:46:43,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 14:46:43,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 14:46:43,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 14:46:43,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 14:46:43,522 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2023-11-23 14:46:43,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 14:46:43,540 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2023-11-23 14:46:43,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 14:46:43,541 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 22 [2023-11-23 14:46:43,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 14:46:43,542 INFO L225 Difference]: With dead ends: 45 [2023-11-23 14:46:43,542 INFO L226 Difference]: Without dead ends: 35 [2023-11-23 14:46:43,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 14:46:43,543 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 4 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 14:46:43,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 49 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 14:46:43,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-11-23 14:46:43,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2023-11-23 14:46:43,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 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) [2023-11-23 14:46:43,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2023-11-23 14:46:43,550 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 22 [2023-11-23 14:46:43,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 14:46:43,550 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2023-11-23 14:46:43,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2023-11-23 14:46:43,550 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2023-11-23 14:46:43,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-23 14:46:43,551 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 14:46:43,552 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-23 14:46:43,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 14:46:43,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-23 14:46:43,758 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 14:46:43,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 14:46:43,759 INFO L85 PathProgramCache]: Analyzing trace with hash 2004618898, now seen corresponding path program 1 times [2023-11-23 14:46:43,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 14:46:43,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020805294] [2023-11-23 14:46:43,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:46:43,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 14:46:43,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:46:43,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 14:46:43,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:46:43,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 14:46:43,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:46:43,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 14:46:43,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:46:43,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 14:46:43,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:46:43,908 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-23 14:46:43,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 14:46:43,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020805294] [2023-11-23 14:46:43,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020805294] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 14:46:43,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041650008] [2023-11-23 14:46:43,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:46:43,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:46:43,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 14:46:43,914 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) [2023-11-23 14:46:43,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 14:46:43,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:46:43,968 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 14:46:43,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 14:46:43,988 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-23 14:46:43,988 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 14:46:44,017 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-23 14:46:44,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041650008] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 14:46:44,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 14:46:44,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2023-11-23 14:46:44,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012698706] [2023-11-23 14:46:44,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 14:46:44,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 14:46:44,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 14:46:44,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 14:46:44,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-11-23 14:46:44,020 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 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) [2023-11-23 14:46:44,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 14:46:44,053 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2023-11-23 14:46:44,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 14:46:44,054 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 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 35 [2023-11-23 14:46:44,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 14:46:44,055 INFO L225 Difference]: With dead ends: 62 [2023-11-23 14:46:44,056 INFO L226 Difference]: Without dead ends: 34 [2023-11-23 14:46:44,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2023-11-23 14:46:44,058 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 14:46:44,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 106 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 14:46:44,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-11-23 14:46:44,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2023-11-23 14:46:44,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 25 states have (on average 1.12) internal successors, (28), 25 states have internal predecessors, (28), 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) [2023-11-23 14:46:44,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2023-11-23 14:46:44,064 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 35 [2023-11-23 14:46:44,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 14:46:44,065 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2023-11-23 14:46:44,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 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) [2023-11-23 14:46:44,065 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2023-11-23 14:46:44,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-23 14:46:44,066 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 14:46:44,066 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-23 14:46:44,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 14:46:44,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:46:44,279 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 14:46:44,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 14:46:44,280 INFO L85 PathProgramCache]: Analyzing trace with hash -607961479, now seen corresponding path program 2 times [2023-11-23 14:46:44,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 14:46:44,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325960834] [2023-11-23 14:46:44,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:46:44,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 14:46:44,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:46:44,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 14:46:44,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:46:44,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-23 14:46:44,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:46:44,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 14:46:44,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:46:44,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 14:46:44,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:46:44,466 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-23 14:46:44,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 14:46:44,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325960834] [2023-11-23 14:46:44,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325960834] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 14:46:44,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200797914] [2023-11-23 14:46:44,467 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 14:46:44,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:46:44,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 14:46:44,468 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) [2023-11-23 14:46:44,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 14:46:44,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 14:46:44,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 14:46:44,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 14:46:44,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 14:46:44,561 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-23 14:46:44,561 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 14:46:44,641 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-23 14:46:44,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200797914] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 14:46:44,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 14:46:44,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 13 [2023-11-23 14:46:44,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065412778] [2023-11-23 14:46:44,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 14:46:44,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 14:46:44,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 14:46:44,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 14:46:44,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2023-11-23 14:46:44,645 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 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) [2023-11-23 14:46:44,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 14:46:44,772 INFO L93 Difference]: Finished difference Result 68 states and 81 transitions. [2023-11-23 14:46:44,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 14:46:44,772 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 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 38 [2023-11-23 14:46:44,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 14:46:44,773 INFO L225 Difference]: With dead ends: 68 [2023-11-23 14:46:44,773 INFO L226 Difference]: Without dead ends: 40 [2023-11-23 14:46:44,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=162, Unknown=0, NotChecked=0, Total=272 [2023-11-23 14:46:44,774 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 14:46:44,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 210 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 14:46:44,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-11-23 14:46:44,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-11-23 14:46:44,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 31 states have (on average 1.096774193548387) internal successors, (34), 31 states have internal predecessors, (34), 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) [2023-11-23 14:46:44,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2023-11-23 14:46:44,781 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 38 [2023-11-23 14:46:44,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 14:46:44,782 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2023-11-23 14:46:44,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 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) [2023-11-23 14:46:44,782 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2023-11-23 14:46:44,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-23 14:46:44,783 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 14:46:44,783 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-23 14:46:44,799 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-23 14:46:44,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:46:44,999 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 14:46:45,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 14:46:45,000 INFO L85 PathProgramCache]: Analyzing trace with hash 663361497, now seen corresponding path program 3 times [2023-11-23 14:46:45,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 14:46:45,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232194043] [2023-11-23 14:46:45,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:46:45,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 14:46:45,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:46:45,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-23 14:46:45,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:46:45,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 14:46:45,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:46:45,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 14:46:45,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:46:45,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 14:46:45,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:46:45,297 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-23 14:46:45,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 14:46:45,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232194043] [2023-11-23 14:46:45,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232194043] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 14:46:45,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190360644] [2023-11-23 14:46:45,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 14:46:45,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:46:45,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 14:46:45,298 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) [2023-11-23 14:46:45,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 14:46:45,498 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-23 14:46:45,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 14:46:45,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-23 14:46:45,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 14:46:46,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:46:46,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:46:46,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:46:46,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:46:46,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:46:46,106 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 14:46:46,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:46:46,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:46:46,110 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 14:46:46,120 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 14:46:46,121 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 [2023-11-23 14:46:46,258 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-11-23 14:46:46,259 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 14:46:48,696 INFO L349 Elim1Store]: treesize reduction 135, result has 20.1 percent of original size [2023-11-23 14:46:48,697 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 227 treesize of output 143 [2023-11-23 14:46:49,016 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-23 14:46:49,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190360644] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 14:46:49,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 14:46:49,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16, 14] total 35 [2023-11-23 14:46:49,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536164934] [2023-11-23 14:46:49,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 14:46:49,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-23 14:46:49,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 14:46:49,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-23 14:46:49,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1076, Unknown=0, NotChecked=0, Total=1190 [2023-11-23 14:46:49,021 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 35 states, 30 states have (on average 2.1666666666666665) internal successors, (65), 30 states have internal predecessors, (65), 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) [2023-11-23 14:46:50,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 14:46:50,404 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2023-11-23 14:46:50,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-23 14:46:50,404 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 30 states have (on average 2.1666666666666665) internal successors, (65), 30 states have internal predecessors, (65), 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 44 [2023-11-23 14:46:50,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 14:46:50,405 INFO L225 Difference]: With dead ends: 76 [2023-11-23 14:46:50,405 INFO L226 Difference]: Without dead ends: 0 [2023-11-23 14:46:50,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 71 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=261, Invalid=2601, Unknown=0, NotChecked=0, Total=2862 [2023-11-23 14:46:50,407 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 14 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 14:46:50,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 219 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 14:46:50,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-23 14:46:50,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-23 14:46:50,407 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) [2023-11-23 14:46:50,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-23 14:46:50,408 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2023-11-23 14:46:50,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 14:46:50,408 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-23 14:46:50,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 30 states have (on average 2.1666666666666665) internal successors, (65), 30 states have internal predecessors, (65), 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) [2023-11-23 14:46:50,408 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-23 14:46:50,408 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-23 14:46:50,410 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 14:46:50,420 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-23 14:46:50,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:46:50,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-23 14:46:50,833 INFO L895 garLoopResultBuilder]: At program point L40-3(lines 40 42) the Hoare annotation is: (let ((.cse0 (= (mod |ULTIMATE.start_main_~loop_entered~0#1| 4294967296) 0)) (.cse1 (= |ULTIMATE.start_main_~#array~0#1.offset| 0))) (or (and .cse0 (= |ULTIMATE.start_main_~i~0#1| 0) .cse1) (and .cse0 (<= (mod (+ 4294967295 |ULTIMATE.start_main_~i~0#1|) 4294967296) 99999) .cse1))) [2023-11-23 14:46:50,834 INFO L899 garLoopResultBuilder]: For program point L40-4(lines 40 42) no Hoare annotation was computed. [2023-11-23 14:46:50,834 INFO L899 garLoopResultBuilder]: For program point L57(lines 57 63) no Hoare annotation was computed. [2023-11-23 14:46:50,834 INFO L895 garLoopResultBuilder]: At program point L49-1(lines 49 55) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~#array~0#1.offset| 0))) (or (and (= (mod |ULTIMATE.start_main_~loop_entered~0#1| 4294967296) 0) (<= (mod |ULTIMATE.start_main_~index2~0#1| 4294967296) 99999) .cse0) (let ((.cse3 (mod (+ |ULTIMATE.start_main_~index1~0#1| 4294967295) 4294967296)) (.cse1 (mod (+ |ULTIMATE.start_main_~index2~0#1| 1) 4294967296))) (and (<= .cse1 99999) (let ((.cse2 (select |#memory_int#1| |ULTIMATE.start_main_~#array~0#1.base|))) (= (mod (select .cse2 (* .cse3 4)) 4294967296) (mod (select .cse2 (* 4 .cse1)) 4294967296))) .cse0 (<= (+ .cse3 1) .cse1))))) [2023-11-23 14:46:50,834 INFO L899 garLoopResultBuilder]: For program point L49-2(lines 34 65) no Hoare annotation was computed. [2023-11-23 14:46:50,834 INFO L895 garLoopResultBuilder]: At program point L45(line 45) the Hoare annotation is: (and (= (mod |ULTIMATE.start_main_~loop_entered~0#1| 4294967296) 0) (= |ULTIMATE.start_main_~#array~0#1.offset| 0)) [2023-11-23 14:46:50,834 INFO L899 garLoopResultBuilder]: For program point L45-1(line 45) no Hoare annotation was computed. [2023-11-23 14:46:50,834 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-23 14:46:50,835 INFO L895 garLoopResultBuilder]: At program point L58-2(lines 58 62) the Hoare annotation is: (let ((.cse1 (select |#memory_int#1| |ULTIMATE.start_main_~#array~0#1.base|)) (.cse3 (= |ULTIMATE.start_main_~#array~0#1.offset| 0))) (or (let ((.cse2 (mod (+ |ULTIMATE.start_main_~index1~0#1| 4294967295) 4294967296)) (.cse0 (mod (+ |ULTIMATE.start_main_~index2~0#1| 1) 4294967296))) (and (<= .cse0 99999) (= (mod (select .cse1 (* .cse2 4)) 4294967296) (mod (select .cse1 (* 4 .cse0)) 4294967296)) .cse3 (<= (+ .cse2 1) .cse0))) (let ((.cse4 (mod |ULTIMATE.start_main_~index1~0#1| 4294967296)) (.cse5 (mod |ULTIMATE.start_main_~index2~0#1| 4294967296))) (and (= (mod (select .cse1 (* .cse4 4)) 4294967296) (mod (select .cse1 (* .cse5 4)) 4294967296)) (<= (+ .cse4 1) .cse5) (<= .cse5 99999) .cse3)))) [2023-11-23 14:46:50,835 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse0 (mod |ULTIMATE.start_main_~index2~0#1| 4294967296))) (and (<= (+ (mod |ULTIMATE.start_main_~index1~0#1| 4294967296) 1) .cse0) (<= .cse0 99999) (= |ULTIMATE.start_main_~#array~0#1.offset| 0))) [2023-11-23 14:46:50,835 INFO L899 garLoopResultBuilder]: For program point L50-1(line 50) no Hoare annotation was computed. [2023-11-23 14:46:50,835 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-23 14:46:50,835 INFO L895 garLoopResultBuilder]: At program point L59(line 59) the Hoare annotation is: (let ((.cse2 (mod (+ |ULTIMATE.start_main_~index1~0#1| 4294967295) 4294967296)) (.cse0 (mod (+ |ULTIMATE.start_main_~index2~0#1| 1) 4294967296))) (and (<= .cse0 99999) (let ((.cse1 (select |#memory_int#1| |ULTIMATE.start_main_~#array~0#1.base|))) (= (mod (select .cse1 (* .cse2 4)) 4294967296) (mod (select .cse1 (* 4 .cse0)) 4294967296))) (= |ULTIMATE.start_main_~#array~0#1.offset| 0) (= (mod |ULTIMATE.start_main_#t~mem9#1| 4294967296) (mod |ULTIMATE.start_main_#t~mem10#1| 4294967296)) (<= (+ .cse2 1) .cse0))) [2023-11-23 14:46:50,835 INFO L899 garLoopResultBuilder]: For program point L59-1(line 59) no Hoare annotation was computed. [2023-11-23 14:46:50,835 INFO L895 garLoopResultBuilder]: At program point L51(line 51) the Hoare annotation is: (let ((.cse1 (mod |ULTIMATE.start_main_~index1~0#1| 4294967296)) (.cse0 (select |#memory_int#1| |ULTIMATE.start_main_~#array~0#1.base|)) (.cse2 (mod |ULTIMATE.start_main_~index2~0#1| 4294967296))) (and (= |ULTIMATE.start_main_#t~mem5#1| (select .cse0 (* .cse1 4))) (<= (+ .cse1 1) .cse2) (<= .cse2 99999) (= |ULTIMATE.start_main_~#array~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem6#1| (select .cse0 (* .cse2 4))))) [2023-11-23 14:46:50,835 INFO L899 garLoopResultBuilder]: For program point L51-1(line 51) no Hoare annotation was computed. [2023-11-23 14:46:50,835 INFO L895 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (and (= (mod |ULTIMATE.start_main_~loop_entered~0#1| 4294967296) 0) (= |ULTIMATE.start_main_~#array~0#1.offset| 0)) [2023-11-23 14:46:50,835 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 20 22) the Hoare annotation is: true [2023-11-23 14:46:50,835 INFO L899 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2023-11-23 14:46:50,835 INFO L899 garLoopResultBuilder]: For program point L21-2(lines 20 22) no Hoare annotation was computed. [2023-11-23 14:46:50,835 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 20 22) no Hoare annotation was computed. [2023-11-23 14:46:50,836 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2023-11-23 14:46:50,836 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 23 29) no Hoare annotation was computed. [2023-11-23 14:46:50,836 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 23 29) the Hoare annotation is: true [2023-11-23 14:46:50,836 INFO L899 garLoopResultBuilder]: For program point L25(lines 25 27) no Hoare annotation was computed. [2023-11-23 14:46:50,836 INFO L899 garLoopResultBuilder]: For program point L25-2(lines 23 29) no Hoare annotation was computed. [2023-11-23 14:46:50,836 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 26) no Hoare annotation was computed. [2023-11-23 14:46:50,838 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2023-11-23 14:46:50,841 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 14:46:50,856 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#array~0!base][(~index1~0 + 4294967295) % 4294967296 * 4] could not be translated [2023-11-23 14:46:50,856 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#array~0!base][4 * ((~index2~0 + 1) % 4294967296)] could not be translated [2023-11-23 14:46:50,858 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#array~0!base][(~index1~0 + 4294967295) % 4294967296 * 4] could not be translated [2023-11-23 14:46:50,858 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#array~0!base][4 * ((~index2~0 + 1) % 4294967296)] could not be translated [2023-11-23 14:46:50,858 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#array~0!base][~index1~0 % 4294967296 * 4] could not be translated [2023-11-23 14:46:50,858 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#array~0!base][~index2~0 % 4294967296 * 4] could not be translated [2023-11-23 14:46:50,859 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:46:50 BoogieIcfgContainer [2023-11-23 14:46:50,859 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 14:46:50,860 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 14:46:50,860 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 14:46:50,860 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 14:46:50,861 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:46:41" (3/4) ... [2023-11-23 14:46:50,863 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 14:46:50,866 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-11-23 14:46:50,866 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-11-23 14:46:50,870 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-11-23 14:46:50,870 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-23 14:46:50,870 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-23 14:46:50,871 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-23 14:46:50,963 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-11-23 14:46:50,963 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2023-11-23 14:46:50,963 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 14:46:50,964 INFO L158 Benchmark]: Toolchain (without parser) took 9880.51ms. Allocated memory was 121.6MB in the beginning and 251.7MB in the end (delta: 130.0MB). Free memory was 51.6MB in the beginning and 107.3MB in the end (delta: -55.8MB). Peak memory consumption was 76.6MB. Max. memory is 16.1GB. [2023-11-23 14:46:50,964 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 121.6MB. Free memory is still 71.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 14:46:50,964 INFO L158 Benchmark]: CACSL2BoogieTranslator took 253.91ms. Allocated memory was 121.6MB in the beginning and 174.1MB in the end (delta: 52.4MB). Free memory was 51.4MB in the beginning and 141.4MB in the end (delta: -90.0MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. [2023-11-23 14:46:50,965 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.72ms. Allocated memory is still 174.1MB. Free memory was 141.4MB in the beginning and 139.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 14:46:50,965 INFO L158 Benchmark]: Boogie Preprocessor took 50.50ms. Allocated memory is still 174.1MB. Free memory was 139.3MB in the beginning and 137.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 14:46:50,966 INFO L158 Benchmark]: RCFGBuilder took 334.00ms. Allocated memory is still 174.1MB. Free memory was 137.2MB in the beginning and 123.9MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-23 14:46:50,966 INFO L158 Benchmark]: TraceAbstraction took 9092.69ms. Allocated memory was 174.1MB in the beginning and 251.7MB in the end (delta: 77.6MB). Free memory was 123.3MB in the beginning and 111.5MB in the end (delta: 11.7MB). Peak memory consumption was 89.6MB. Max. memory is 16.1GB. [2023-11-23 14:46:50,966 INFO L158 Benchmark]: Witness Printer took 103.12ms. Allocated memory is still 251.7MB. Free memory was 111.5MB in the beginning and 107.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 14:46:50,968 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 121.6MB. Free memory is still 71.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 253.91ms. Allocated memory was 121.6MB in the beginning and 174.1MB in the end (delta: 52.4MB). Free memory was 51.4MB in the beginning and 141.4MB in the end (delta: -90.0MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.72ms. Allocated memory is still 174.1MB. Free memory was 141.4MB in the beginning and 139.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.50ms. Allocated memory is still 174.1MB. Free memory was 139.3MB in the beginning and 137.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 334.00ms. Allocated memory is still 174.1MB. Free memory was 137.2MB in the beginning and 123.9MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 9092.69ms. Allocated memory was 174.1MB in the beginning and 251.7MB in the end (delta: 77.6MB). Free memory was 123.3MB in the beginning and 111.5MB in the end (delta: 11.7MB). Peak memory consumption was 89.6MB. Max. memory is 16.1GB. * Witness Printer took 103.12ms. Allocated memory is still 251.7MB. Free memory was 111.5MB in the beginning and 107.3MB in the end (delta: 4.2MB). 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: ArrayAccessExpression #memory_int#1[~#array~0!base][(~index1~0 + 4294967295) % 4294967296 * 4] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#array~0!base][4 * ((~index2~0 + 1) % 4294967296)] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#array~0!base][(~index1~0 + 4294967295) % 4294967296 * 4] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#array~0!base][4 * ((~index2~0 + 1) % 4294967296)] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#array~0!base][~index1~0 % 4294967296 * 4] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#array~0!base][~index2~0 % 4294967296 * 4] could not be translated * 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, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.0s, OverallIterations: 6, TraceHistogramMax: 10, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 35 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 29 mSDsluCounter, 730 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 585 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 721 IncrementalHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 145 mSDtfsCounter, 721 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 380 GetRequests, 288 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=5, InterpolantAutomatonStates: 63, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 36 PreInvPairs, 58 NumberOfFragments, 324 HoareAnnotationTreeSize, 36 FomulaSimplifications, 203 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 297 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 337 NumberOfCodeBlocks, 323 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 461 ConstructedInterpolants, 3 QuantifiedInterpolants, 2543 SizeOfPredicates, 17 NumberOfNonLiveVariables, 484 ConjunctsInSsa, 69 ConjunctsInUnsatCore, 15 InterpolantComputations, 3 PerfectInterpolantSequences, 269/362 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 % 4294967296) == 0) && (i == 0)) || (((loop_entered % 4294967296) == 0) && (((4294967295 + i) % 4294967296) <= 99999))) - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: ((((loop_entered % 4294967296) == 0) && ((index2 % 4294967296) <= 99999)) || ((((index2 + 1) % 4294967296) <= 99999) && ((((index1 + 4294967295) % 4294967296) + 1) <= ((index2 + 1) % 4294967296)))) - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: (((((index2 + 1) % 4294967296) <= 99999) && ((((index1 + 4294967295) % 4294967296) + 1) <= ((index2 + 1) % 4294967296))) || ((((index1 % 4294967296) + 1) <= (index2 % 4294967296)) && ((index2 % 4294967296) <= 99999))) RESULT: Ultimate proved your program to be correct! [2023-11-23 14:46:51,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE