./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_partition_ground-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/array-examples/standard_partition_ground-1.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 6c4a57140d9977d38b2a20d40c88df51a4fcb7b14a0fb7c51e0b4e36cddf9998 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 08:56:34,228 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 08:56:34,302 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 08:56:34,307 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 08:56:34,308 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 08:56:34,350 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 08:56:34,351 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 08:56:34,352 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 08:56:34,352 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 08:56:34,353 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 08:56:34,353 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 08:56:34,353 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 08:56:34,354 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 08:56:34,355 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 08:56:34,355 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 08:56:34,357 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 08:56:34,357 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 08:56:34,358 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 08:56:34,358 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 08:56:34,362 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 08:56:34,362 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 08:56:34,363 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 08:56:34,363 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 08:56:34,363 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 08:56:34,363 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 08:56:34,364 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 08:56:34,364 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 08:56:34,364 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 08:56:34,364 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 08:56:34,365 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 08:56:34,365 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 08:56:34,365 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 08:56:34,365 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 08:56:34,365 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 08:56:34,366 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 08:56:34,366 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 08:56:34,366 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 08:56:34,367 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 08:56:34,367 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 08:56:34,368 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 08:56:34,368 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 08:56:34,368 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 08:56:34,368 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c4a57140d9977d38b2a20d40c88df51a4fcb7b14a0fb7c51e0b4e36cddf9998 [2024-11-18 08:56:34,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 08:56:34,632 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 08:56:34,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 08:56:34,637 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 08:56:34,638 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 08:56:34,639 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_partition_ground-1.i [2024-11-18 08:56:36,078 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 08:56:36,273 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 08:56:36,274 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_partition_ground-1.i [2024-11-18 08:56:36,281 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/692a63f20/b39e65ba591749db82d52f0e1151f70c/FLAG0d05724d4 [2024-11-18 08:56:36,663 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/692a63f20/b39e65ba591749db82d52f0e1151f70c [2024-11-18 08:56:36,666 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 08:56:36,667 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 08:56:36,669 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 08:56:36,669 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 08:56:36,674 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 08:56:36,675 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:56:36" (1/1) ... [2024-11-18 08:56:36,676 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f514fa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:36, skipping insertion in model container [2024-11-18 08:56:36,676 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:56:36" (1/1) ... [2024-11-18 08:56:36,695 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 08:56:36,874 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_partition_ground-1.i[860,873] [2024-11-18 08:56:36,890 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 08:56:36,897 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 08:56:36,907 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_partition_ground-1.i[860,873] [2024-11-18 08:56:36,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 08:56:36,931 INFO L204 MainTranslator]: Completed translation [2024-11-18 08:56:36,932 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:36 WrapperNode [2024-11-18 08:56:36,932 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 08:56:36,933 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 08:56:36,933 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 08:56:36,933 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 08:56:36,938 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:36" (1/1) ... [2024-11-18 08:56:36,946 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:36" (1/1) ... [2024-11-18 08:56:36,964 INFO L138 Inliner]: procedures = 16, calls = 26, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 82 [2024-11-18 08:56:36,965 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 08:56:36,965 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 08:56:36,966 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 08:56:36,966 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 08:56:36,973 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:36" (1/1) ... [2024-11-18 08:56:36,974 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:36" (1/1) ... [2024-11-18 08:56:36,975 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:36" (1/1) ... [2024-11-18 08:56:36,987 INFO L175 MemorySlicer]: Split 11 memory accesses to 4 slices as follows [2, 2, 5, 2]. 45 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-11-18 08:56:36,987 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:36" (1/1) ... [2024-11-18 08:56:36,987 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:36" (1/1) ... [2024-11-18 08:56:36,993 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:36" (1/1) ... [2024-11-18 08:56:36,998 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:36" (1/1) ... [2024-11-18 08:56:36,999 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:36" (1/1) ... [2024-11-18 08:56:37,000 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:36" (1/1) ... [2024-11-18 08:56:37,003 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 08:56:37,004 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 08:56:37,004 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 08:56:37,004 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 08:56:37,004 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:36" (1/1) ... [2024-11-18 08:56:37,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 08:56:37,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:56:37,041 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 08:56:37,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 08:56:37,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 08:56:37,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 08:56:37,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 08:56:37,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 08:56:37,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-18 08:56:37,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-18 08:56:37,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-18 08:56:37,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-18 08:56:37,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-18 08:56:37,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-18 08:56:37,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 08:56:37,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 08:56:37,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-18 08:56:37,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-18 08:56:37,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-18 08:56:37,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-18 08:56:37,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-18 08:56:37,103 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-18 08:56:37,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-18 08:56:37,266 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 08:56:37,268 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 08:56:37,413 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-11-18 08:56:37,413 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 08:56:37,423 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 08:56:37,424 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-18 08:56:37,424 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:56:37 BoogieIcfgContainer [2024-11-18 08:56:37,424 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 08:56:37,426 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 08:56:37,426 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 08:56:37,429 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 08:56:37,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:56:36" (1/3) ... [2024-11-18 08:56:37,430 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59c86d72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:56:37, skipping insertion in model container [2024-11-18 08:56:37,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:36" (2/3) ... [2024-11-18 08:56:37,430 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59c86d72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:56:37, skipping insertion in model container [2024-11-18 08:56:37,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:56:37" (3/3) ... [2024-11-18 08:56:37,432 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_partition_ground-1.i [2024-11-18 08:56:37,447 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 08:56:37,447 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 08:56:37,497 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 08:56:37,504 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@483d6f2d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 08:56:37,504 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 08:56:37,508 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 24 states have (on average 1.5) internal successors, (36), 25 states have internal predecessors, (36), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 08:56:37,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-18 08:56:37,513 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:56:37,513 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:56:37,514 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:56:37,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:56:37,518 INFO L85 PathProgramCache]: Analyzing trace with hash 25564738, now seen corresponding path program 1 times [2024-11-18 08:56:37,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:56:37,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304512646] [2024-11-18 08:56:37,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:56:37,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:56:37,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:56:37,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 08:56:37,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:56:37,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304512646] [2024-11-18 08:56:37,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304512646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 08:56:37,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 08:56:37,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 08:56:37,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353663503] [2024-11-18 08:56:37,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 08:56:37,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 08:56:37,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:56:37,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 08:56:37,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 08:56:37,743 INFO L87 Difference]: Start difference. First operand has 29 states, 24 states have (on average 1.5) internal successors, (36), 25 states have internal predecessors, (36), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:56:37,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:56:37,761 INFO L93 Difference]: Finished difference Result 53 states and 74 transitions. [2024-11-18 08:56:37,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 08:56:37,763 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-18 08:56:37,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:56:37,769 INFO L225 Difference]: With dead ends: 53 [2024-11-18 08:56:37,769 INFO L226 Difference]: Without dead ends: 25 [2024-11-18 08:56:37,771 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 08:56:37,774 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 08:56:37,775 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 08:56:37,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-18 08:56:37,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-18 08:56:37,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 08:56:37,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2024-11-18 08:56:37,805 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 11 [2024-11-18 08:56:37,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:56:37,805 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2024-11-18 08:56:37,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:56:37,806 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2024-11-18 08:56:37,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-18 08:56:37,807 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:56:37,807 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:56:37,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 08:56:37,808 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:56:37,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:56:37,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1555088748, now seen corresponding path program 1 times [2024-11-18 08:56:37,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:56:37,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093732986] [2024-11-18 08:56:37,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:56:37,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:56:37,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:56:37,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 08:56:37,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:56:37,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093732986] [2024-11-18 08:56:37,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093732986] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 08:56:37,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 08:56:37,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 08:56:37,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476558569] [2024-11-18 08:56:37,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 08:56:37,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 08:56:37,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:56:37,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 08:56:37,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 08:56:37,958 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:56:38,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:56:38,014 INFO L93 Difference]: Finished difference Result 51 states and 65 transitions. [2024-11-18 08:56:38,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 08:56:38,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-18 08:56:38,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:56:38,015 INFO L225 Difference]: With dead ends: 51 [2024-11-18 08:56:38,015 INFO L226 Difference]: Without dead ends: 31 [2024-11-18 08:56:38,016 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 08:56:38,017 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 08:56:38,018 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 46 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 08:56:38,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-18 08:56:38,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2024-11-18 08:56:38,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 08:56:38,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2024-11-18 08:56:38,024 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 11 [2024-11-18 08:56:38,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:56:38,025 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2024-11-18 08:56:38,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:56:38,026 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2024-11-18 08:56:38,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-18 08:56:38,027 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:56:38,027 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:56:38,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 08:56:38,027 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:56:38,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:56:38,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1378811952, now seen corresponding path program 1 times [2024-11-18 08:56:38,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:56:38,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104418971] [2024-11-18 08:56:38,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:56:38,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:56:38,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:56:38,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 08:56:38,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:56:38,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104418971] [2024-11-18 08:56:38,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104418971] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:56:38,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125879950] [2024-11-18 08:56:38,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:56:38,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:56:38,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:56:38,179 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 08:56:38,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 08:56:38,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:56:38,267 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 08:56:38,274 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:56:38,317 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 08:56:38,320 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:56:38,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 08:56:38,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125879950] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:56:38,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:56:38,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-18 08:56:38,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57396744] [2024-11-18 08:56:38,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:56:38,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 08:56:38,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:56:38,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 08:56:38,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 08:56:38,348 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:56:38,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:56:38,434 INFO L93 Difference]: Finished difference Result 66 states and 88 transitions. [2024-11-18 08:56:38,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 08:56:38,437 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-18 08:56:38,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:56:38,438 INFO L225 Difference]: With dead ends: 66 [2024-11-18 08:56:38,439 INFO L226 Difference]: Without dead ends: 45 [2024-11-18 08:56:38,439 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 08:56:38,440 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 24 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 08:56:38,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 90 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 08:56:38,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-18 08:56:38,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-11-18 08:56:38,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 41 states have internal predecessors, (53), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 08:56:38,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2024-11-18 08:56:38,451 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 17 [2024-11-18 08:56:38,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:56:38,452 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2024-11-18 08:56:38,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:56:38,452 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2024-11-18 08:56:38,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-18 08:56:38,453 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:56:38,453 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:56:38,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 08:56:38,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:56:38,656 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:56:38,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:56:38,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1056905748, now seen corresponding path program 2 times [2024-11-18 08:56:38,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:56:38,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480570763] [2024-11-18 08:56:38,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 08:56:38,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:56:38,686 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-18 08:56:38,687 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:56:38,761 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-18 08:56:38,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:56:38,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480570763] [2024-11-18 08:56:38,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480570763] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 08:56:38,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 08:56:38,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 08:56:38,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167572609] [2024-11-18 08:56:38,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 08:56:38,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 08:56:38,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:56:38,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 08:56:38,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 08:56:38,770 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:56:38,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:56:38,796 INFO L93 Difference]: Finished difference Result 87 states and 111 transitions. [2024-11-18 08:56:38,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 08:56:38,797 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-18 08:56:38,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:56:38,801 INFO L225 Difference]: With dead ends: 87 [2024-11-18 08:56:38,801 INFO L226 Difference]: Without dead ends: 72 [2024-11-18 08:56:38,801 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 08:56:38,802 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 1 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 08:56:38,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 66 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 08:56:38,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-18 08:56:38,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-18 08:56:38,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 68 states have (on average 1.3088235294117647) internal successors, (89), 68 states have internal predecessors, (89), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 08:56:38,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 93 transitions. [2024-11-18 08:56:38,819 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 93 transitions. Word has length 35 [2024-11-18 08:56:38,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:56:38,840 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 93 transitions. [2024-11-18 08:56:38,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:56:38,841 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 93 transitions. [2024-11-18 08:56:38,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-18 08:56:38,843 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:56:38,843 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:56:38,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 08:56:38,845 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:56:38,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:56:38,845 INFO L85 PathProgramCache]: Analyzing trace with hash 748532586, now seen corresponding path program 1 times [2024-11-18 08:56:38,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:56:38,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137515655] [2024-11-18 08:56:38,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:56:38,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:56:38,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:56:39,075 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-18 08:56:39,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:56:39,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137515655] [2024-11-18 08:56:39,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137515655] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:56:39,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073336342] [2024-11-18 08:56:39,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:56:39,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:56:39,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:56:39,080 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 08:56:39,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 08:56:39,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:56:39,182 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 08:56:39,184 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:56:39,222 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-18 08:56:39,225 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:56:39,313 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-18 08:56:39,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073336342] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:56:39,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:56:39,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-18 08:56:39,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252614418] [2024-11-18 08:56:39,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:56:39,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 08:56:39,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:56:39,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 08:56:39,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-18 08:56:39,318 INFO L87 Difference]: Start difference. First operand 72 states and 93 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:56:39,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:56:39,465 INFO L93 Difference]: Finished difference Result 190 states and 271 transitions. [2024-11-18 08:56:39,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 08:56:39,467 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-18 08:56:39,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:56:39,469 INFO L225 Difference]: With dead ends: 190 [2024-11-18 08:56:39,469 INFO L226 Difference]: Without dead ends: 144 [2024-11-18 08:56:39,469 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-18 08:56:39,470 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 83 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 08:56:39,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 121 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 08:56:39,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-18 08:56:39,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2024-11-18 08:56:39,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 140 states have (on average 1.3214285714285714) internal successors, (185), 140 states have internal predecessors, (185), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 08:56:39,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 189 transitions. [2024-11-18 08:56:39,487 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 189 transitions. Word has length 35 [2024-11-18 08:56:39,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:56:39,487 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 189 transitions. [2024-11-18 08:56:39,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:56:39,487 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 189 transitions. [2024-11-18 08:56:39,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-18 08:56:39,489 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:56:39,489 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:56:39,502 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 08:56:39,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:56:39,692 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:56:39,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:56:39,693 INFO L85 PathProgramCache]: Analyzing trace with hash -737484630, now seen corresponding path program 2 times [2024-11-18 08:56:39,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:56:39,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57828770] [2024-11-18 08:56:39,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 08:56:39,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:56:39,748 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 08:56:39,748 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:56:40,061 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-18 08:56:40,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:56:40,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57828770] [2024-11-18 08:56:40,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57828770] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:56:40,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141425231] [2024-11-18 08:56:40,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 08:56:40,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:56:40,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:56:40,066 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 08:56:40,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 08:56:40,203 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 08:56:40,203 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:56:40,207 INFO L255 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 08:56:40,210 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:56:40,290 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-18 08:56:40,290 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:56:40,555 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-18 08:56:40,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141425231] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:56:40,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:56:40,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-18 08:56:40,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813668198] [2024-11-18 08:56:40,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:56:40,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-18 08:56:40,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:56:40,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-18 08:56:40,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-18 08:56:40,562 INFO L87 Difference]: Start difference. First operand 144 states and 189 transitions. Second operand has 25 states, 25 states have (on average 3.16) internal successors, (79), 25 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:56:40,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:56:40,877 INFO L93 Difference]: Finished difference Result 370 states and 535 transitions. [2024-11-18 08:56:40,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-18 08:56:40,878 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.16) internal successors, (79), 25 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-18 08:56:40,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:56:40,880 INFO L225 Difference]: With dead ends: 370 [2024-11-18 08:56:40,880 INFO L226 Difference]: Without dead ends: 288 [2024-11-18 08:56:40,883 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-18 08:56:40,884 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 323 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 08:56:40,884 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 126 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 08:56:40,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-11-18 08:56:40,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2024-11-18 08:56:40,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 284 states have (on average 1.3274647887323943) internal successors, (377), 284 states have internal predecessors, (377), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 08:56:40,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 381 transitions. [2024-11-18 08:56:40,924 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 381 transitions. Word has length 71 [2024-11-18 08:56:40,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:56:40,925 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 381 transitions. [2024-11-18 08:56:40,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.16) internal successors, (79), 25 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:56:40,925 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 381 transitions. [2024-11-18 08:56:40,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-18 08:56:40,930 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:56:40,931 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:56:40,948 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 08:56:41,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:56:41,132 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:56:41,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:56:41,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1759255338, now seen corresponding path program 3 times [2024-11-18 08:56:41,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:56:41,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705597072] [2024-11-18 08:56:41,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 08:56:41,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:56:41,181 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 08:56:41,181 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:56:41,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 21 proven. 43 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2024-11-18 08:56:41,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:56:41,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705597072] [2024-11-18 08:56:41,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705597072] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:56:41,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931629008] [2024-11-18 08:56:41,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 08:56:41,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:56:41,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:56:41,464 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 08:56:41,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 08:56:41,584 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 08:56:41,585 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:56:41,586 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 08:56:41,593 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:56:41,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-11-18 08:56:41,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-18 08:56:41,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-18 08:56:41,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 21 proven. 43 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2024-11-18 08:56:41,954 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:56:42,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2024-11-18 08:56:42,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2024-11-18 08:56:42,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2024-11-18 08:56:42,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931629008] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:56:42,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:56:42,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-11-18 08:56:42,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389582744] [2024-11-18 08:56:42,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:56:42,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-18 08:56:42,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:56:42,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-18 08:56:42,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2024-11-18 08:56:42,248 INFO L87 Difference]: Start difference. First operand 288 states and 381 transitions. Second operand has 17 states, 16 states have (on average 2.5) internal successors, (40), 15 states have internal predecessors, (40), 1 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:56:42,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:56:42,421 INFO L93 Difference]: Finished difference Result 442 states and 584 transitions. [2024-11-18 08:56:42,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 08:56:42,421 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.5) internal successors, (40), 15 states have internal predecessors, (40), 1 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2024-11-18 08:56:42,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:56:42,428 INFO L225 Difference]: With dead ends: 442 [2024-11-18 08:56:42,428 INFO L226 Difference]: Without dead ends: 440 [2024-11-18 08:56:42,429 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 274 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2024-11-18 08:56:42,429 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 28 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 08:56:42,430 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 340 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 08:56:42,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2024-11-18 08:56:42,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 425. [2024-11-18 08:56:42,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 419 states have (on average 1.3293556085918854) internal successors, (557), 420 states have internal predecessors, (557), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 08:56:42,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 563 transitions. [2024-11-18 08:56:42,469 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 563 transitions. Word has length 143 [2024-11-18 08:56:42,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:56:42,470 INFO L471 AbstractCegarLoop]: Abstraction has 425 states and 563 transitions. [2024-11-18 08:56:42,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.5) internal successors, (40), 15 states have internal predecessors, (40), 1 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:56:42,472 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 563 transitions. [2024-11-18 08:56:42,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-18 08:56:42,479 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:56:42,479 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 20, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:56:42,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-18 08:56:42,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:56:42,680 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:56:42,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:56:42,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1393209492, now seen corresponding path program 4 times [2024-11-18 08:56:42,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:56:42,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849874841] [2024-11-18 08:56:42,681 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 08:56:42,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:56:42,764 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 08:56:42,764 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:56:43,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2024-11-18 08:56:43,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:56:43,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849874841] [2024-11-18 08:56:43,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849874841] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:56:43,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066865456] [2024-11-18 08:56:43,591 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 08:56:43,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:56:43,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:56:43,594 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 08:56:43,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 08:56:44,102 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 08:56:44,102 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:56:44,108 INFO L255 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-18 08:56:44,112 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:56:44,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2024-11-18 08:56:44,229 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:56:45,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2024-11-18 08:56:45,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066865456] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:56:45,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:56:45,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 48 [2024-11-18 08:56:45,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484172501] [2024-11-18 08:56:45,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:56:45,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-18 08:56:45,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:56:45,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-18 08:56:45,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2024-11-18 08:56:45,110 INFO L87 Difference]: Start difference. First operand 425 states and 563 transitions. Second operand has 48 states, 48 states have (on average 4.604166666666667) internal successors, (221), 48 states have internal predecessors, (221), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:56:45,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:56:45,685 INFO L93 Difference]: Finished difference Result 1086 states and 1584 transitions. [2024-11-18 08:56:45,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-18 08:56:45,686 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 4.604166666666667) internal successors, (221), 48 states have internal predecessors, (221), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2024-11-18 08:56:45,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:56:45,692 INFO L225 Difference]: With dead ends: 1086 [2024-11-18 08:56:45,693 INFO L226 Difference]: Without dead ends: 857 [2024-11-18 08:56:45,695 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2024-11-18 08:56:45,696 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 364 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 08:56:45,697 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 229 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 08:56:45,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2024-11-18 08:56:45,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 857. [2024-11-18 08:56:45,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 851 states have (on average 1.3313748531139835) internal successors, (1133), 852 states have internal predecessors, (1133), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 08:56:45,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1139 transitions. [2024-11-18 08:56:45,745 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1139 transitions. Word has length 143 [2024-11-18 08:56:45,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:56:45,746 INFO L471 AbstractCegarLoop]: Abstraction has 857 states and 1139 transitions. [2024-11-18 08:56:45,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 4.604166666666667) internal successors, (221), 48 states have internal predecessors, (221), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:56:45,747 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1139 transitions. [2024-11-18 08:56:45,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2024-11-18 08:56:45,753 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:56:45,753 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 44, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:56:45,780 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 08:56:45,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:56:45,959 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:56:45,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:56:45,959 INFO L85 PathProgramCache]: Analyzing trace with hash 166777452, now seen corresponding path program 5 times [2024-11-18 08:56:45,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:56:45,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141609447] [2024-11-18 08:56:45,960 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 08:56:45,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:56:46,798 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2024-11-18 08:56:46,799 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:56:49,631 INFO L134 CoverageAnalysis]: Checked inductivity of 6302 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 3151 trivial. 0 not checked. [2024-11-18 08:56:49,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:56:49,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141609447] [2024-11-18 08:56:49,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141609447] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:56:49,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888775818] [2024-11-18 08:56:49,632 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 08:56:49,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:56:49,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:56:49,635 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 08:56:49,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process