./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/ms3.c --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-fpi/ms3.c -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 b493eaf5cbb9a8ad0f724257518d8f922b0657033a5eb7aa4f50992fe6ac33a4 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 09:26:21,361 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 09:26:21,440 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 09:26:21,446 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 09:26:21,447 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 09:26:21,480 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 09:26:21,480 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 09:26:21,481 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 09:26:21,482 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 09:26:21,484 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 09:26:21,486 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 09:26:21,487 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 09:26:21,487 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 09:26:21,488 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 09:26:21,488 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 09:26:21,488 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 09:26:21,488 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 09:26:21,489 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 09:26:21,489 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 09:26:21,489 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 09:26:21,489 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 09:26:21,490 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 09:26:21,491 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 09:26:21,491 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 09:26:21,491 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 09:26:21,492 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 09:26:21,492 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 09:26:21,492 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 09:26:21,492 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 09:26:21,493 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 09:26:21,493 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 09:26:21,493 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 09:26:21,493 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:26:21,494 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 09:26:21,494 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 09:26:21,495 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 09:26:21,495 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 09:26:21,496 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 09:26:21,496 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 09:26:21,496 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 09:26:21,497 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 09:26:21,497 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 09:26:21,497 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b493eaf5cbb9a8ad0f724257518d8f922b0657033a5eb7aa4f50992fe6ac33a4 [2024-11-18 09:26:21,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 09:26:21,817 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 09:26:21,820 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 09:26:21,821 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 09:26:21,822 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 09:26:21,824 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/ms3.c [2024-11-18 09:26:23,342 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 09:26:23,532 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 09:26:23,533 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ms3.c [2024-11-18 09:26:23,540 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/787390103/2b2c80f0920e4ecba306201914d23917/FLAG0ca521bd5 [2024-11-18 09:26:23,930 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/787390103/2b2c80f0920e4ecba306201914d23917 [2024-11-18 09:26:23,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 09:26:23,934 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 09:26:23,935 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 09:26:23,935 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 09:26:23,942 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 09:26:23,943 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:26:23" (1/1) ... [2024-11-18 09:26:23,943 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5af2c0ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:23, skipping insertion in model container [2024-11-18 09:26:23,943 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:26:23" (1/1) ... [2024-11-18 09:26:23,964 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 09:26:24,201 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-fpi/ms3.c[586,599] [2024-11-18 09:26:24,228 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:26:24,239 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 09:26:24,252 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-fpi/ms3.c[586,599] [2024-11-18 09:26:24,264 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:26:24,289 INFO L204 MainTranslator]: Completed translation [2024-11-18 09:26:24,290 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:24 WrapperNode [2024-11-18 09:26:24,290 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 09:26:24,295 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 09:26:24,295 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 09:26:24,295 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 09:26:24,302 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:24" (1/1) ... [2024-11-18 09:26:24,309 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:24" (1/1) ... [2024-11-18 09:26:24,329 INFO L138 Inliner]: procedures = 17, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2024-11-18 09:26:24,329 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 09:26:24,330 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 09:26:24,330 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 09:26:24,330 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 09:26:24,343 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:24" (1/1) ... [2024-11-18 09:26:24,343 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:24" (1/1) ... [2024-11-18 09:26:24,346 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:24" (1/1) ... [2024-11-18 09:26:24,361 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 6, 4, 2]. 43 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6, 0, 0]. The 3 writes are split as follows [0, 0, 2, 1]. [2024-11-18 09:26:24,362 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:24" (1/1) ... [2024-11-18 09:26:24,362 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:24" (1/1) ... [2024-11-18 09:26:24,367 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:24" (1/1) ... [2024-11-18 09:26:24,370 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:24" (1/1) ... [2024-11-18 09:26:24,372 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:24" (1/1) ... [2024-11-18 09:26:24,373 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:24" (1/1) ... [2024-11-18 09:26:24,375 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 09:26:24,376 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 09:26:24,377 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 09:26:24,377 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 09:26:24,378 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:24" (1/1) ... [2024-11-18 09:26:24,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:26:24,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:26:24,417 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 09:26:24,420 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 09:26:24,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 09:26:24,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 09:26:24,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 09:26:24,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 09:26:24,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-18 09:26:24,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-18 09:26:24,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-18 09:26:24,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-18 09:26:24,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-18 09:26:24,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-18 09:26:24,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-18 09:26:24,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 09:26:24,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 09:26:24,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-18 09:26:24,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-18 09:26:24,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-18 09:26:24,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-18 09:26:24,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-18 09:26:24,579 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 09:26:24,584 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 09:26:24,774 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-18 09:26:24,774 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 09:26:24,791 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 09:26:24,791 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-18 09:26:24,792 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:26:24 BoogieIcfgContainer [2024-11-18 09:26:24,792 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 09:26:24,795 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 09:26:24,797 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 09:26:24,801 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 09:26:24,801 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:26:23" (1/3) ... [2024-11-18 09:26:24,802 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6002035c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:26:24, skipping insertion in model container [2024-11-18 09:26:24,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:26:24" (2/3) ... [2024-11-18 09:26:24,803 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6002035c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:26:24, skipping insertion in model container [2024-11-18 09:26:24,803 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:26:24" (3/3) ... [2024-11-18 09:26:24,804 INFO L112 eAbstractionObserver]: Analyzing ICFG ms3.c [2024-11-18 09:26:24,822 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 09:26:24,822 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 09:26:24,895 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 09:26:24,906 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;@71fb00fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 09:26:24,906 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 09:26:24,912 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:24,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-18 09:26:24,919 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:26:24,920 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:26:24,921 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:26:24,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:26:24,927 INFO L85 PathProgramCache]: Analyzing trace with hash 356661439, now seen corresponding path program 1 times [2024-11-18 09:26:24,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:26:24,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423514015] [2024-11-18 09:26:24,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:26:24,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:26:25,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:26:25,137 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 09:26:25,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:26:25,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423514015] [2024-11-18 09:26:25,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423514015] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:26:25,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:26:25,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 09:26:25,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906945588] [2024-11-18 09:26:25,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:26:25,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 09:26:25,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:26:25,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 09:26:25,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 09:26:25,173 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:25,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:26:25,187 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2024-11-18 09:26:25,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 09:26:25,189 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-18 09:26:25,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:26:25,197 INFO L225 Difference]: With dead ends: 34 [2024-11-18 09:26:25,197 INFO L226 Difference]: Without dead ends: 15 [2024-11-18 09:26:25,200 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 09:26:25,204 INFO L432 NwaCegarLoop]: 22 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, 22 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 09:26:25,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:26:25,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-18 09:26:25,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-18 09:26:25,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:25,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2024-11-18 09:26:25,235 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2024-11-18 09:26:25,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:26:25,236 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2024-11-18 09:26:25,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:25,237 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2024-11-18 09:26:25,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-18 09:26:25,237 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:26:25,238 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:26:25,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 09:26:25,239 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:26:25,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:26:25,240 INFO L85 PathProgramCache]: Analyzing trace with hash -452685187, now seen corresponding path program 1 times [2024-11-18 09:26:25,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:26:25,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095904987] [2024-11-18 09:26:25,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:26:25,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:26:25,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:26:25,423 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 09:26:25,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:26:25,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095904987] [2024-11-18 09:26:25,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095904987] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:26:25,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:26:25,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 09:26:25,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607043479] [2024-11-18 09:26:25,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:26:25,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:26:25,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:26:25,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:26:25,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:26:25,431 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:25,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:26:25,513 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2024-11-18 09:26:25,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:26:25,514 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-18 09:26:25,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:26:25,515 INFO L225 Difference]: With dead ends: 28 [2024-11-18 09:26:25,515 INFO L226 Difference]: Without dead ends: 20 [2024-11-18 09:26:25,516 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 09:26:25,517 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:26:25,517 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 11 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:26:25,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-18 09:26:25,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2024-11-18 09:26:25,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:25,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2024-11-18 09:26:25,524 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 11 [2024-11-18 09:26:25,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:26:25,525 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2024-11-18 09:26:25,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:25,526 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2024-11-18 09:26:25,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-18 09:26:25,526 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:26:25,526 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:26:25,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 09:26:25,527 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:26:25,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:26:25,527 INFO L85 PathProgramCache]: Analyzing trace with hash 623611495, now seen corresponding path program 1 times [2024-11-18 09:26:25,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:26:25,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370224670] [2024-11-18 09:26:25,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:26:25,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:26:25,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:26:25,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 09:26:25,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:26:25,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370224670] [2024-11-18 09:26:25,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370224670] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:26:25,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:26:25,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 09:26:25,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812055202] [2024-11-18 09:26:25,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:26:25,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 09:26:25,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:26:25,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 09:26:25,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:26:25,909 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:25,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:26:25,964 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2024-11-18 09:26:25,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 09:26:25,964 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-18 09:26:25,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:26:25,965 INFO L225 Difference]: With dead ends: 25 [2024-11-18 09:26:25,965 INFO L226 Difference]: Without dead ends: 21 [2024-11-18 09:26:25,966 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-18 09:26:25,967 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:26:25,967 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 25 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:26:25,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-18 09:26:25,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2024-11-18 09:26:25,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:25,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2024-11-18 09:26:25,972 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 16 [2024-11-18 09:26:25,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:26:25,972 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2024-11-18 09:26:25,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:25,972 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2024-11-18 09:26:25,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-18 09:26:25,973 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:26:25,973 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:26:25,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 09:26:25,974 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:26:25,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:26:25,974 INFO L85 PathProgramCache]: Analyzing trace with hash -422196611, now seen corresponding path program 1 times [2024-11-18 09:26:25,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:26:25,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036191935] [2024-11-18 09:26:25,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:26:25,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:26:25,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:26:26,094 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:26,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:26:26,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036191935] [2024-11-18 09:26:26,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036191935] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:26:26,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822951114] [2024-11-18 09:26:26,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:26:26,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:26:26,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:26:26,098 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 09:26:26,099 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 09:26:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:26:26,171 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 09:26:26,176 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:26:26,286 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:26,286 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:26:26,338 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:26,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822951114] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:26:26,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:26:26,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-18 09:26:26,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204713029] [2024-11-18 09:26:26,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:26:26,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 09:26:26,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:26:26,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 09:26:26,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-18 09:26:26,340 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:26,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:26:26,450 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2024-11-18 09:26:26,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 09:26:26,451 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-18 09:26:26,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:26:26,451 INFO L225 Difference]: With dead ends: 39 [2024-11-18 09:26:26,452 INFO L226 Difference]: Without dead ends: 25 [2024-11-18 09:26:26,452 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-18 09:26:26,453 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:26:26,453 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 26 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:26:26,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-18 09:26:26,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2024-11-18 09:26:26,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:26,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2024-11-18 09:26:26,460 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 19 [2024-11-18 09:26:26,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:26:26,461 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2024-11-18 09:26:26,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:26,461 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2024-11-18 09:26:26,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-18 09:26:26,462 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:26:26,462 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:26:26,481 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 09:26:26,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:26:26,663 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:26:26,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:26:26,663 INFO L85 PathProgramCache]: Analyzing trace with hash 692240447, now seen corresponding path program 2 times [2024-11-18 09:26:26,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:26:26,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720402331] [2024-11-18 09:26:26,664 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:26:26,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:26:26,731 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:26:26,731 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:26:27,484 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:27,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:26:27,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720402331] [2024-11-18 09:26:27,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720402331] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:26:27,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372111382] [2024-11-18 09:26:27,487 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:26:27,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:26:27,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:26:27,490 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 09:26:27,492 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 09:26:27,575 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:26:27,575 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:26:27,577 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-18 09:26:27,600 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:26:27,688 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 29 treesize of output 1 [2024-11-18 09:26:27,908 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 09:26:28,130 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:26:28,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 29 [2024-11-18 09:26:28,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 36 treesize of output 13 [2024-11-18 09:26:28,358 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 09:26:28,377 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:28,378 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:26:28,719 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 22 treesize of output 20 [2024-11-18 09:26:28,729 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 24 [2024-11-18 09:26:28,777 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:28,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372111382] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:26:28,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:26:28,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 27 [2024-11-18 09:26:28,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934870972] [2024-11-18 09:26:28,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:26:28,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-18 09:26:28,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:26:28,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-18 09:26:28,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=572, Unknown=0, NotChecked=0, Total=702 [2024-11-18 09:26:28,781 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 27 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:29,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:26:29,440 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2024-11-18 09:26:29,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 09:26:29,441 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 27 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-18 09:26:29,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:26:29,442 INFO L225 Difference]: With dead ends: 38 [2024-11-18 09:26:29,444 INFO L226 Difference]: Without dead ends: 27 [2024-11-18 09:26:29,445 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=275, Invalid=1131, Unknown=0, NotChecked=0, Total=1406 [2024-11-18 09:26:29,446 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 47 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:26:29,446 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 52 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 09:26:29,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-18 09:26:29,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2024-11-18 09:26:29,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:29,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2024-11-18 09:26:29,456 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 21 [2024-11-18 09:26:29,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:26:29,456 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2024-11-18 09:26:29,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 27 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:29,456 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2024-11-18 09:26:29,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-18 09:26:29,457 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:26:29,457 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:26:29,475 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 09:26:29,657 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 09:26:29,658 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:26:29,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:26:29,658 INFO L85 PathProgramCache]: Analyzing trace with hash -301520475, now seen corresponding path program 3 times [2024-11-18 09:26:29,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:26:29,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463148358] [2024-11-18 09:26:29,658 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:26:29,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:26:29,697 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-18 09:26:29,698 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:26:29,840 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:29,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:26:29,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463148358] [2024-11-18 09:26:29,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463148358] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:26:29,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924521682] [2024-11-18 09:26:29,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:26:29,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:26:29,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:26:29,843 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 09:26:29,845 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 09:26:29,917 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-18 09:26:29,917 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:26:29,918 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 09:26:29,920 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:26:29,995 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:29,996 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:26:30,052 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:26:30,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924521682] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:26:30,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:26:30,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-18 09:26:30,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167622340] [2024-11-18 09:26:30,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:26:30,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 09:26:30,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:26:30,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 09:26:30,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-18 09:26:30,055 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:30,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:26:30,165 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2024-11-18 09:26:30,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 09:26:30,166 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-18 09:26:30,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:26:30,166 INFO L225 Difference]: With dead ends: 45 [2024-11-18 09:26:30,166 INFO L226 Difference]: Without dead ends: 30 [2024-11-18 09:26:30,167 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-18 09:26:30,168 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 15 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:26:30,168 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 35 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:26:30,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-18 09:26:30,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2024-11-18 09:26:30,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 26 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:30,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2024-11-18 09:26:30,179 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 24 [2024-11-18 09:26:30,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:26:30,179 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2024-11-18 09:26:30,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:30,180 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2024-11-18 09:26:30,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-18 09:26:30,180 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:26:30,181 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:26:30,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 09:26:30,381 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 09:26:30,382 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:26:30,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:26:30,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1384678109, now seen corresponding path program 4 times [2024-11-18 09:26:30,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:26:30,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669415274] [2024-11-18 09:26:30,382 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:26:30,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:26:30,405 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:26:30,405 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:26:31,241 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 09:26:31,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:26:31,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669415274] [2024-11-18 09:26:31,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669415274] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:26:31,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740128856] [2024-11-18 09:26:31,242 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:26:31,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:26:31,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:26:31,245 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 09:26:31,246 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 09:26:31,310 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:26:31,311 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:26:31,312 WARN L253 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-18 09:26:31,315 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:26:31,338 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 23 treesize of output 1 [2024-11-18 09:26:31,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 42 [2024-11-18 09:26:33,754 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 09:26:34,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 44 treesize of output 21 [2024-11-18 09:26:38,721 INFO L349 Elim1Store]: treesize reduction 35, result has 78.3 percent of original size [2024-11-18 09:26:38,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 113 treesize of output 178 [2024-11-18 09:26:38,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 36 treesize of output 13 [2024-11-18 09:26:39,909 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 46 treesize of output 34 [2024-11-18 09:26:39,953 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 09:26:39,954 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:26:40,723 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 09:26:40,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740128856] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:26:40,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:26:40,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2024-11-18 09:26:40,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99072027] [2024-11-18 09:26:40,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:26:40,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-18 09:26:40,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:26:40,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-18 09:26:40,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=1823, Unknown=0, NotChecked=0, Total=2070 [2024-11-18 09:26:40,728 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 46 states, 46 states have (on average 1.326086956521739) internal successors, (61), 46 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:26:48,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-18 09:26:53,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.50s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-18 09:27:33,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:27:33,759 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2024-11-18 09:27:33,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-18 09:27:33,760 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.326086956521739) internal successors, (61), 46 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-18 09:27:33,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:27:33,760 INFO L225 Difference]: With dead ends: 35 [2024-11-18 09:27:33,760 INFO L226 Difference]: Without dead ends: 31 [2024-11-18 09:27:33,762 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1091 ImplicationChecksByTransitivity, 50.3s TimeCoverageRelationStatistics Valid=560, Invalid=3466, Unknown=6, NotChecked=0, Total=4032 [2024-11-18 09:27:33,763 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 53 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 38 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2024-11-18 09:27:33,763 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 82 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 400 Invalid, 1 Unknown, 0 Unchecked, 8.8s Time] [2024-11-18 09:27:33,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-18 09:27:33,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2024-11-18 09:27:33,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 29 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:27:33,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2024-11-18 09:27:33,777 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 26 [2024-11-18 09:27:33,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:27:33,777 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2024-11-18 09:27:33,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.326086956521739) internal successors, (61), 46 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:27:33,778 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2024-11-18 09:27:33,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-18 09:27:33,778 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:27:33,779 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:27:33,802 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 09:27:33,982 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 09:27:33,983 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:27:33,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:27:33,983 INFO L85 PathProgramCache]: Analyzing trace with hash -483356095, now seen corresponding path program 5 times [2024-11-18 09:27:33,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:27:33,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957741361] [2024-11-18 09:27:33,984 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:27:33,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:27:34,019 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-18 09:27:34,020 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:27:34,156 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:27:34,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:27:34,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957741361] [2024-11-18 09:27:34,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957741361] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:27:34,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270853877] [2024-11-18 09:27:34,157 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:27:34,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:27:34,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:27:34,159 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 09:27:34,160 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 09:27:34,232 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-18 09:27:34,232 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:27:34,233 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-18 09:27:34,235 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:27:34,322 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:27:34,322 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:27:34,373 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:27:34,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270853877] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:27:34,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:27:34,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 15 [2024-11-18 09:27:34,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923072528] [2024-11-18 09:27:34,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:27:34,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-18 09:27:34,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:27:34,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-18 09:27:34,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2024-11-18 09:27:34,375 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:27:34,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:27:34,494 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2024-11-18 09:27:34,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 09:27:34,494 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-18 09:27:34,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:27:34,495 INFO L225 Difference]: With dead ends: 53 [2024-11-18 09:27:34,495 INFO L226 Difference]: Without dead ends: 35 [2024-11-18 09:27:34,496 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 46 SyntacticMatches, 8 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2024-11-18 09:27:34,496 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 25 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:27:34,498 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 29 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:27:34,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-18 09:27:34,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2024-11-18 09:27:34,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:27:34,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2024-11-18 09:27:34,516 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 29 [2024-11-18 09:27:34,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:27:34,517 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2024-11-18 09:27:34,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:27:34,519 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2024-11-18 09:27:34,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-18 09:27:34,519 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:27:34,519 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:27:34,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-18 09:27:34,719 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 09:27:34,720 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:27:34,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:27:34,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1023492733, now seen corresponding path program 6 times [2024-11-18 09:27:34,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:27:34,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982569251] [2024-11-18 09:27:34,721 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:27:34,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:27:34,782 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-18 09:27:34,782 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:27:35,856 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:27:35,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:27:35,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982569251] [2024-11-18 09:27:35,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982569251] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:27:35,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507467902] [2024-11-18 09:27:35,856 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:27:35,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:27:35,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:27:35,862 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 09:27:35,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 09:27:35,937 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-18 09:27:35,937 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:27:35,938 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-18 09:27:35,941 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:27:35,958 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 09:27:35,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-18 09:27:36,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-18 09:27:36,158 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 09:27:36,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 40 treesize of output 17 [2024-11-18 09:27:36,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 44 treesize of output 21 [2024-11-18 09:27:36,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 50 treesize of output 27 [2024-11-18 09:27:36,555 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:27:36,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 20 [2024-11-18 09:27:36,611 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 09:27:36,636 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:27:36,636 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:27:37,709 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 284 treesize of output 266 [2024-11-18 09:27:37,809 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:27:37,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1158084 treesize of output 1059732 [2024-11-18 09:27:38,073 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:27:38,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507467902] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:27:38,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:27:38,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19, 19] total 51 [2024-11-18 09:27:38,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595764804] [2024-11-18 09:27:38,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:27:38,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-18 09:27:38,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:27:38,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-18 09:27:38,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=2252, Unknown=0, NotChecked=0, Total=2550 [2024-11-18 09:27:38,076 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 51 states, 51 states have (on average 1.4901960784313726) internal successors, (76), 51 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:27:38,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:27:38,754 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2024-11-18 09:27:38,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-18 09:27:38,755 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.4901960784313726) internal successors, (76), 51 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-18 09:27:38,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:27:38,755 INFO L225 Difference]: With dead ends: 41 [2024-11-18 09:27:38,756 INFO L226 Difference]: Without dead ends: 37 [2024-11-18 09:27:38,757 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1189 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=503, Invalid=3279, Unknown=0, NotChecked=0, Total=3782 [2024-11-18 09:27:38,757 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 49 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 09:27:38,758 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 135 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 09:27:38,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-18 09:27:38,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2024-11-18 09:27:38,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 34 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:27:38,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2024-11-18 09:27:38,773 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 31 [2024-11-18 09:27:38,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:27:38,774 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2024-11-18 09:27:38,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.4901960784313726) internal successors, (76), 51 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:27:38,774 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2024-11-18 09:27:38,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-18 09:27:38,775 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:27:38,775 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:27:38,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-18 09:27:38,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:27:38,976 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:27:38,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:27:38,977 INFO L85 PathProgramCache]: Analyzing trace with hash 697103841, now seen corresponding path program 7 times [2024-11-18 09:27:38,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:27:38,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093632557] [2024-11-18 09:27:38,977 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 09:27:38,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:27:38,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:27:39,145 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 25 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:27:39,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:27:39,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093632557] [2024-11-18 09:27:39,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093632557] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:27:39,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886161829] [2024-11-18 09:27:39,146 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 09:27:39,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:27:39,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:27:39,149 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:27:39,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 09:27:39,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:27:39,231 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 09:27:39,232 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:27:39,330 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 35 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:27:39,331 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:27:39,400 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 35 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:27:39,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886161829] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:27:39,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:27:39,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-18 09:27:39,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896843823] [2024-11-18 09:27:39,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:27:39,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-18 09:27:39,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:27:39,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-18 09:27:39,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-11-18 09:27:39,402 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:27:39,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:27:39,524 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2024-11-18 09:27:39,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 09:27:39,524 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-11-18 09:27:39,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:27:39,525 INFO L225 Difference]: With dead ends: 61 [2024-11-18 09:27:39,525 INFO L226 Difference]: Without dead ends: 40 [2024-11-18 09:27:39,525 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 52 SyntacticMatches, 9 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2024-11-18 09:27:39,526 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 43 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:27:39,526 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 26 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:27:39,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-18 09:27:39,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2024-11-18 09:27:39,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 36 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:27:39,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2024-11-18 09:27:39,543 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 34 [2024-11-18 09:27:39,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:27:39,543 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2024-11-18 09:27:39,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:27:39,543 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2024-11-18 09:27:39,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-18 09:27:39,544 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:27:39,544 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:27:39,557 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-18 09:27:39,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:27:39,745 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:27:39,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:27:39,745 INFO L85 PathProgramCache]: Analyzing trace with hash -880704545, now seen corresponding path program 8 times [2024-11-18 09:27:39,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:27:39,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217041585] [2024-11-18 09:27:39,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:27:39,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:27:39,795 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:27:39,799 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:27:41,404 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:27:41,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:27:41,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217041585] [2024-11-18 09:27:41,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217041585] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:27:41,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899785920] [2024-11-18 09:27:41,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:27:41,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:27:41,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:27:41,406 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:27:41,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 09:27:41,480 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:27:41,480 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:27:41,482 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-18 09:27:41,486 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:27:41,551 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 09:27:41,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-18 09:27:41,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-18 09:27:41,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2024-11-18 09:27:41,891 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 09:27:42,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 40 treesize of output 17 [2024-11-18 09:27:42,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 44 treesize of output 21 [2024-11-18 09:27:42,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 50 treesize of output 27 [2024-11-18 09:27:42,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 55 treesize of output 32 [2024-11-18 09:27:42,411 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:27:42,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 24 [2024-11-18 09:27:42,462 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 09:27:42,500 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:27:42,500 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:27:44,946 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 635 treesize of output 603 [2024-11-18 09:27:47,153 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:27:47,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32861547541 treesize of output 31452261269 [2024-11-18 09:27:52,070 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:27:52,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899785920] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:27:52,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:27:52,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 22, 22] total 63 [2024-11-18 09:27:52,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100680950] [2024-11-18 09:27:52,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:27:52,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-18 09:27:52,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:27:52,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-18 09:27:52,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=484, Invalid=3422, Unknown=0, NotChecked=0, Total=3906 [2024-11-18 09:27:52,073 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand has 63 states, 63 states have (on average 1.507936507936508) internal successors, (95), 63 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)