./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-12.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-12.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6b3d37dbb1f844bbdab9795055d991e82d88af691e0e65987480a92814525937 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 00:42:22,275 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 00:42:22,350 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 00:42:22,354 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 00:42:22,354 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 00:42:22,378 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 00:42:22,379 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 00:42:22,379 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 00:42:22,380 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 00:42:22,380 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 00:42:22,381 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 00:42:22,381 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 00:42:22,383 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 00:42:22,383 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 00:42:22,384 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 00:42:22,384 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 00:42:22,384 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 00:42:22,385 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 00:42:22,385 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 00:42:22,385 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 00:42:22,386 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 00:42:22,388 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 00:42:22,397 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 00:42:22,398 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 00:42:22,398 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 00:42:22,398 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 00:42:22,399 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 00:42:22,399 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 00:42:22,399 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 00:42:22,400 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 00:42:22,400 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 00:42:22,400 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 00:42:22,401 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 00:42:22,401 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 00:42:22,401 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 00:42:22,402 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 00:42:22,402 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 00:42:22,403 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 00:42:22,403 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 00:42:22,403 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 00:42:22,404 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 00:42:22,404 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 00:42:22,404 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b3d37dbb1f844bbdab9795055d991e82d88af691e0e65987480a92814525937 [2024-11-19 00:42:22,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 00:42:22,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 00:42:22,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 00:42:22,686 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 00:42:22,687 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 00:42:22,688 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-12.i [2024-11-19 00:42:24,122 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 00:42:24,328 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 00:42:24,329 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-12.i [2024-11-19 00:42:24,343 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec6a5fee6/194bac4378d443afb3be090cbc1124b1/FLAG64a441e40 [2024-11-19 00:42:24,355 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec6a5fee6/194bac4378d443afb3be090cbc1124b1 [2024-11-19 00:42:24,357 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 00:42:24,359 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 00:42:24,360 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 00:42:24,361 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 00:42:24,365 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 00:42:24,365 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 12:42:24" (1/1) ... [2024-11-19 00:42:24,366 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cf29928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:42:24, skipping insertion in model container [2024-11-19 00:42:24,366 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 12:42:24" (1/1) ... [2024-11-19 00:42:24,396 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 00:42:24,580 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/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-12.i[917,930] [2024-11-19 00:42:24,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 00:42:24,676 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 00:42:24,687 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/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-12.i[917,930] [2024-11-19 00:42:24,719 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 00:42:24,744 INFO L204 MainTranslator]: Completed translation [2024-11-19 00:42:24,745 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:42:24 WrapperNode [2024-11-19 00:42:24,745 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 00:42:24,746 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 00:42:24,747 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 00:42:24,747 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 00:42:24,753 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:42:24" (1/1) ... [2024-11-19 00:42:24,770 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:42:24" (1/1) ... [2024-11-19 00:42:24,809 INFO L138 Inliner]: procedures = 26, calls = 153, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 458 [2024-11-19 00:42:24,812 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 00:42:24,813 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 00:42:24,813 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 00:42:24,813 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 00:42:24,823 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:42:24" (1/1) ... [2024-11-19 00:42:24,823 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:42:24" (1/1) ... [2024-11-19 00:42:24,829 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:42:24" (1/1) ... [2024-11-19 00:42:24,851 INFO L175 MemorySlicer]: Split 123 memory accesses to 4 slices as follows [2, 38, 12, 71]. 58 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 2, 4]. The 14 writes are split as follows [0, 8, 2, 4]. [2024-11-19 00:42:24,854 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:42:24" (1/1) ... [2024-11-19 00:42:24,854 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:42:24" (1/1) ... [2024-11-19 00:42:24,869 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:42:24" (1/1) ... [2024-11-19 00:42:24,874 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:42:24" (1/1) ... [2024-11-19 00:42:24,877 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:42:24" (1/1) ... [2024-11-19 00:42:24,879 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:42:24" (1/1) ... [2024-11-19 00:42:24,884 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 00:42:24,885 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 00:42:24,885 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 00:42:24,886 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 00:42:24,886 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:42:24" (1/1) ... [2024-11-19 00:42:24,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 00:42:24,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:42:24,927 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 00:42:24,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 00:42:24,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 00:42:24,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 00:42:24,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 00:42:24,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 00:42:24,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-19 00:42:24,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 00:42:24,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 00:42:24,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 00:42:24,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-19 00:42:24,985 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-19 00:42:24,985 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-19 00:42:24,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 00:42:24,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 00:42:24,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 00:42:24,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-19 00:42:24,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 00:42:24,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 00:42:25,126 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 00:42:25,128 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 00:42:25,729 INFO L? ?]: Removed 131 outVars from TransFormulas that were not future-live. [2024-11-19 00:42:25,729 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 00:42:25,750 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 00:42:25,750 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 00:42:25,751 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 12:42:25 BoogieIcfgContainer [2024-11-19 00:42:25,751 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 00:42:25,754 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 00:42:25,754 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 00:42:25,758 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 00:42:25,759 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 12:42:24" (1/3) ... [2024-11-19 00:42:25,760 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56420fdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 12:42:25, skipping insertion in model container [2024-11-19 00:42:25,761 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:42:24" (2/3) ... [2024-11-19 00:42:25,761 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56420fdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 12:42:25, skipping insertion in model container [2024-11-19 00:42:25,761 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 12:42:25" (3/3) ... [2024-11-19 00:42:25,764 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-ap_file-12.i [2024-11-19 00:42:25,779 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 00:42:25,779 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 00:42:25,831 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 00:42:25,837 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;@1e8ab1c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 00:42:25,837 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 00:42:25,841 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 79 states have (on average 1.3924050632911393) internal successors, (110), 80 states have internal predecessors, (110), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-19 00:42:25,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-19 00:42:25,852 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:42:25,853 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:42:25,853 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:42:25,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:42:25,858 INFO L85 PathProgramCache]: Analyzing trace with hash -571948604, now seen corresponding path program 1 times [2024-11-19 00:42:25,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:42:25,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200721630] [2024-11-19 00:42:25,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:42:25,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:42:26,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:42:26,212 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2024-11-19 00:42:26,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:42:26,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200721630] [2024-11-19 00:42:26,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200721630] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:42:26,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339324772] [2024-11-19 00:42:26,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:42:26,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:42:26,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:42:26,217 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 00:42:26,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 00:42:26,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:42:26,453 INFO L255 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-19 00:42:26,461 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:42:26,493 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2024-11-19 00:42:26,494 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 00:42:26,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339324772] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:42:26,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 00:42:26,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-19 00:42:26,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537715077] [2024-11-19 00:42:26,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:42:26,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 00:42:26,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:42:26,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 00:42:26,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 00:42:26,535 INFO L87 Difference]: Start difference. First operand has 98 states, 79 states have (on average 1.3924050632911393) internal successors, (110), 80 states have internal predecessors, (110), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-19 00:42:26,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:42:26,564 INFO L93 Difference]: Finished difference Result 183 states and 284 transitions. [2024-11-19 00:42:26,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 00:42:26,566 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 117 [2024-11-19 00:42:26,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:42:26,572 INFO L225 Difference]: With dead ends: 183 [2024-11-19 00:42:26,572 INFO L226 Difference]: Without dead ends: 88 [2024-11-19 00:42:26,576 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 00:42:26,580 INFO L432 NwaCegarLoop]: 123 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, 123 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 [2024-11-19 00:42:26,582 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 00:42:26,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-19 00:42:26,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-19 00:42:26,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 70 states have (on average 1.3) internal successors, (91), 70 states have internal predecessors, (91), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-19 00:42:26,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 123 transitions. [2024-11-19 00:42:26,625 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 123 transitions. Word has length 117 [2024-11-19 00:42:26,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:42:26,626 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 123 transitions. [2024-11-19 00:42:26,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-19 00:42:26,627 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 123 transitions. [2024-11-19 00:42:26,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-19 00:42:26,631 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:42:26,631 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:42:26,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 00:42:26,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-19 00:42:26,836 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:42:26,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:42:26,838 INFO L85 PathProgramCache]: Analyzing trace with hash 760381860, now seen corresponding path program 1 times [2024-11-19 00:42:26,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:42:26,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484267935] [2024-11-19 00:42:26,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:42:26,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:42:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:42:27,278 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-19 00:42:27,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:42:27,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484267935] [2024-11-19 00:42:27,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484267935] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:42:27,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183092220] [2024-11-19 00:42:27,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:42:27,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:42:27,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:42:27,284 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 00:42:27,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 00:42:27,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:42:27,485 INFO L255 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 00:42:27,493 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:42:27,553 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:42:27,557 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 00:42:27,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183092220] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:42:27,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 00:42:27,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2024-11-19 00:42:27,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311751783] [2024-11-19 00:42:27,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:42:27,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 00:42:27,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:42:27,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 00:42:27,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 00:42:27,562 INFO L87 Difference]: Start difference. First operand 88 states and 123 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 00:42:27,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:42:27,596 INFO L93 Difference]: Finished difference Result 173 states and 243 transitions. [2024-11-19 00:42:27,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 00:42:27,597 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 117 [2024-11-19 00:42:27,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:42:27,599 INFO L225 Difference]: With dead ends: 173 [2024-11-19 00:42:27,599 INFO L226 Difference]: Without dead ends: 88 [2024-11-19 00:42:27,599 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 00:42:27,601 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 0 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 00:42:27,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 351 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 00:42:27,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-19 00:42:27,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-19 00:42:27,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 70 states have (on average 1.2857142857142858) internal successors, (90), 70 states have internal predecessors, (90), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-19 00:42:27,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 122 transitions. [2024-11-19 00:42:27,611 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 122 transitions. Word has length 117 [2024-11-19 00:42:27,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:42:27,613 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 122 transitions. [2024-11-19 00:42:27,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 00:42:27,613 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 122 transitions. [2024-11-19 00:42:27,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-19 00:42:27,615 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:42:27,615 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:42:27,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 00:42:27,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-19 00:42:27,817 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:42:27,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:42:27,818 INFO L85 PathProgramCache]: Analyzing trace with hash -124307358, now seen corresponding path program 1 times [2024-11-19 00:42:27,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:42:27,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940665857] [2024-11-19 00:42:27,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:42:27,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:42:27,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:42:28,101 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-19 00:42:28,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:42:28,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940665857] [2024-11-19 00:42:28,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940665857] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:42:28,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62061400] [2024-11-19 00:42:28,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:42:28,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:42:28,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:42:28,106 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 00:42:28,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 00:42:28,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:42:28,269 INFO L255 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 00:42:28,272 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:42:28,327 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:42:28,328 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 00:42:28,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62061400] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:42:28,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 00:42:28,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2024-11-19 00:42:28,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760740440] [2024-11-19 00:42:28,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:42:28,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 00:42:28,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:42:28,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 00:42:28,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 00:42:28,332 INFO L87 Difference]: Start difference. First operand 88 states and 122 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 00:42:28,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:42:28,386 INFO L93 Difference]: Finished difference Result 176 states and 245 transitions. [2024-11-19 00:42:28,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 00:42:28,387 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 119 [2024-11-19 00:42:28,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:42:28,390 INFO L225 Difference]: With dead ends: 176 [2024-11-19 00:42:28,392 INFO L226 Difference]: Without dead ends: 91 [2024-11-19 00:42:28,393 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 00:42:28,394 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 0 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 00:42:28,394 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 461 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 00:42:28,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-19 00:42:28,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2024-11-19 00:42:28,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 73 states have (on average 1.273972602739726) internal successors, (93), 73 states have internal predecessors, (93), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-19 00:42:28,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 125 transitions. [2024-11-19 00:42:28,413 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 125 transitions. Word has length 119 [2024-11-19 00:42:28,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:42:28,414 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 125 transitions. [2024-11-19 00:42:28,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 00:42:28,415 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 125 transitions. [2024-11-19 00:42:28,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-19 00:42:28,419 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:42:28,419 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:42:28,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 00:42:28,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:42:28,621 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:42:28,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:42:28,621 INFO L85 PathProgramCache]: Analyzing trace with hash -233055546, now seen corresponding path program 1 times [2024-11-19 00:42:28,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:42:28,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2968353] [2024-11-19 00:42:28,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:42:28,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:42:28,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:42:29,430 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:42:29,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:42:29,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2968353] [2024-11-19 00:42:29,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2968353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:42:29,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:42:29,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 00:42:29,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566128381] [2024-11-19 00:42:29,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:42:29,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 00:42:29,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:42:29,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 00:42:29,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 00:42:29,435 INFO L87 Difference]: Start difference. First operand 91 states and 125 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 00:42:29,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:42:29,703 INFO L93 Difference]: Finished difference Result 133 states and 177 transitions. [2024-11-19 00:42:29,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 00:42:29,704 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 121 [2024-11-19 00:42:29,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:42:29,706 INFO L225 Difference]: With dead ends: 133 [2024-11-19 00:42:29,706 INFO L226 Difference]: Without dead ends: 131 [2024-11-19 00:42:29,709 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-19 00:42:29,710 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 157 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 00:42:29,710 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 622 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 00:42:29,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-19 00:42:29,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 116. [2024-11-19 00:42:29,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 98 states have (on average 1.2755102040816326) internal successors, (125), 98 states have internal predecessors, (125), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-19 00:42:29,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 157 transitions. [2024-11-19 00:42:29,728 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 157 transitions. Word has length 121 [2024-11-19 00:42:29,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:42:29,728 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 157 transitions. [2024-11-19 00:42:29,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 00:42:29,729 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 157 transitions. [2024-11-19 00:42:29,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-19 00:42:29,731 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:42:29,731 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:42:29,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 00:42:29,732 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:42:29,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:42:29,732 INFO L85 PathProgramCache]: Analyzing trace with hash 44675301, now seen corresponding path program 1 times [2024-11-19 00:42:29,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:42:29,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458303549] [2024-11-19 00:42:29,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:42:29,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:42:29,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:42:32,883 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2024-11-19 00:42:32,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:42:32,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458303549] [2024-11-19 00:42:32,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458303549] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:42:32,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592384195] [2024-11-19 00:42:32,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:42:32,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:42:32,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:42:32,887 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 00:42:32,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 00:42:33,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:42:33,083 INFO L255 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-11-19 00:42:33,090 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:42:33,310 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 23 treesize of output 3 [2024-11-19 00:42:34,081 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 25 treesize of output 13 [2024-11-19 00:42:35,043 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 34 treesize of output 25 [2024-11-19 00:42:36,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 00:42:36,772 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-19 00:42:36,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 32 [2024-11-19 00:42:37,219 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 24 proven. 192 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-19 00:42:37,219 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 00:42:37,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592384195] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:42:37,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 00:42:37,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 27] total 46 [2024-11-19 00:42:37,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872262335] [2024-11-19 00:42:37,878 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 00:42:37,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-19 00:42:37,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:42:37,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-19 00:42:37,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=2426, Unknown=0, NotChecked=0, Total=2652 [2024-11-19 00:42:37,881 INFO L87 Difference]: Start difference. First operand 116 states and 157 transitions. Second operand has 46 states, 38 states have (on average 2.736842105263158) internal successors, (104), 37 states have internal predecessors, (104), 12 states have call successors, (32), 6 states have call predecessors, (32), 7 states have return successors, (32), 12 states have call predecessors, (32), 12 states have call successors, (32) [2024-11-19 00:42:41,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:42:41,751 INFO L93 Difference]: Finished difference Result 193 states and 243 transitions. [2024-11-19 00:42:41,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-19 00:42:41,751 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 38 states have (on average 2.736842105263158) internal successors, (104), 37 states have internal predecessors, (104), 12 states have call successors, (32), 6 states have call predecessors, (32), 7 states have return successors, (32), 12 states have call predecessors, (32), 12 states have call successors, (32) Word has length 122 [2024-11-19 00:42:41,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:42:41,753 INFO L225 Difference]: With dead ends: 193 [2024-11-19 00:42:41,754 INFO L226 Difference]: Without dead ends: 191 [2024-11-19 00:42:41,757 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1919 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1030, Invalid=6802, Unknown=0, NotChecked=0, Total=7832 [2024-11-19 00:42:41,758 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 595 mSDsluCounter, 2408 mSDsCounter, 0 mSdLazyCounter, 1761 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 2525 SdHoareTripleChecker+Invalid, 1890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-19 00:42:41,758 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 2525 Invalid, 1890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1761 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-19 00:42:41,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-11-19 00:42:41,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 132. [2024-11-19 00:42:41,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 110 states have (on average 1.2454545454545454) internal successors, (137), 110 states have internal predecessors, (137), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-19 00:42:41,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 169 transitions. [2024-11-19 00:42:41,774 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 169 transitions. Word has length 122 [2024-11-19 00:42:41,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:42:41,775 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 169 transitions. [2024-11-19 00:42:41,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 38 states have (on average 2.736842105263158) internal successors, (104), 37 states have internal predecessors, (104), 12 states have call successors, (32), 6 states have call predecessors, (32), 7 states have return successors, (32), 12 states have call predecessors, (32), 12 states have call successors, (32) [2024-11-19 00:42:41,775 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 169 transitions. [2024-11-19 00:42:41,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-19 00:42:41,777 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:42:41,777 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:42:41,797 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 00:42:41,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:42:41,982 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:42:41,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:42:41,982 INFO L85 PathProgramCache]: Analyzing trace with hash 972179707, now seen corresponding path program 1 times [2024-11-19 00:42:41,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:42:41,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283184163] [2024-11-19 00:42:41,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:42:41,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:42:42,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:42:44,458 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2024-11-19 00:42:44,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:42:44,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283184163] [2024-11-19 00:42:44,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283184163] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:42:44,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901772443] [2024-11-19 00:42:44,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:42:44,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:42:44,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:42:44,462 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 00:42:44,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 00:42:44,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:42:44,654 INFO L255 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-19 00:42:44,663 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:42:44,823 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 [2024-11-19 00:42:45,478 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 25 treesize of output 13 [2024-11-19 00:42:46,298 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 34 treesize of output 25 [2024-11-19 00:42:47,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 00:42:47,789 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-19 00:42:47,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 32 [2024-11-19 00:42:48,187 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 24 proven. 192 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-19 00:42:48,187 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 00:42:48,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901772443] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:42:48,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 00:42:48,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 27] total 47 [2024-11-19 00:42:48,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566136260] [2024-11-19 00:42:48,731 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 00:42:48,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-19 00:42:48,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:42:48,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-19 00:42:48,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=2530, Unknown=0, NotChecked=0, Total=2756 [2024-11-19 00:42:48,734 INFO L87 Difference]: Start difference. First operand 132 states and 169 transitions. Second operand has 47 states, 39 states have (on average 2.717948717948718) internal successors, (106), 39 states have internal predecessors, (106), 12 states have call successors, (32), 6 states have call predecessors, (32), 7 states have return successors, (32), 12 states have call predecessors, (32), 12 states have call successors, (32) [2024-11-19 00:42:51,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:42:51,946 INFO L93 Difference]: Finished difference Result 203 states and 254 transitions. [2024-11-19 00:42:51,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-19 00:42:51,947 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 39 states have (on average 2.717948717948718) internal successors, (106), 39 states have internal predecessors, (106), 12 states have call successors, (32), 6 states have call predecessors, (32), 7 states have return successors, (32), 12 states have call predecessors, (32), 12 states have call successors, (32) Word has length 123 [2024-11-19 00:42:51,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:42:51,949 INFO L225 Difference]: With dead ends: 203 [2024-11-19 00:42:51,949 INFO L226 Difference]: Without dead ends: 201 [2024-11-19 00:42:51,951 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 196 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2091 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1070, Invalid=7120, Unknown=0, NotChecked=0, Total=8190 [2024-11-19 00:42:51,952 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 702 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 1309 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 1447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-19 00:42:51,952 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 1627 Invalid, 1447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1309 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-19 00:42:51,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-11-19 00:42:51,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 134. [2024-11-19 00:42:51,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 112 states have (on average 1.25) internal successors, (140), 112 states have internal predecessors, (140), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-19 00:42:51,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 172 transitions. [2024-11-19 00:42:51,967 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 172 transitions. Word has length 123 [2024-11-19 00:42:51,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:42:51,967 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 172 transitions. [2024-11-19 00:42:51,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 39 states have (on average 2.717948717948718) internal successors, (106), 39 states have internal predecessors, (106), 12 states have call successors, (32), 6 states have call predecessors, (32), 7 states have return successors, (32), 12 states have call predecessors, (32), 12 states have call successors, (32) [2024-11-19 00:42:51,968 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 172 transitions. [2024-11-19 00:42:51,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-19 00:42:51,969 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:42:51,969 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:42:51,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-19 00:42:52,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:42:52,171 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:42:52,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:42:52,171 INFO L85 PathProgramCache]: Analyzing trace with hash -959553979, now seen corresponding path program 1 times [2024-11-19 00:42:52,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:42:52,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432323271] [2024-11-19 00:42:52,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:42:52,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:42:52,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:42:52,281 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:42:52,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:42:52,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432323271] [2024-11-19 00:42:52,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432323271] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:42:52,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:42:52,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 00:42:52,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484200417] [2024-11-19 00:42:52,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:42:52,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 00:42:52,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:42:52,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 00:42:52,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 00:42:52,284 INFO L87 Difference]: Start difference. First operand 134 states and 172 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 00:42:52,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:42:52,360 INFO L93 Difference]: Finished difference Result 347 states and 436 transitions. [2024-11-19 00:42:52,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 00:42:52,360 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2024-11-19 00:42:52,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:42:52,362 INFO L225 Difference]: With dead ends: 347 [2024-11-19 00:42:52,362 INFO L226 Difference]: Without dead ends: 216 [2024-11-19 00:42:52,362 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 00:42:52,363 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 54 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 00:42:52,364 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 510 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 00:42:52,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-11-19 00:42:52,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 213. [2024-11-19 00:42:52,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 180 states have (on average 1.2166666666666666) internal successors, (219), 181 states have internal predecessors, (219), 22 states have call successors, (22), 10 states have call predecessors, (22), 10 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-19 00:42:52,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 263 transitions. [2024-11-19 00:42:52,398 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 263 transitions. Word has length 124 [2024-11-19 00:42:52,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:42:52,399 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 263 transitions. [2024-11-19 00:42:52,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 00:42:52,399 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 263 transitions. [2024-11-19 00:42:52,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-19 00:42:52,403 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:42:52,403 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:42:52,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 00:42:52,403 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:42:52,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:42:52,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1108535968, now seen corresponding path program 1 times [2024-11-19 00:42:52,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:42:52,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785158686] [2024-11-19 00:42:52,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:42:52,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:42:52,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:42:52,910 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-19 00:42:52,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:42:52,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785158686] [2024-11-19 00:42:52,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785158686] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:42:52,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770964338] [2024-11-19 00:42:52,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:42:52,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:42:52,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:42:52,913 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 00:42:52,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 00:42:53,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:42:53,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-19 00:42:53,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:42:53,238 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 [2024-11-19 00:42:53,529 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 35 treesize of output 23 [2024-11-19 00:42:53,534 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 10 proven. 250 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-19 00:42:53,535 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 00:42:53,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2024-11-19 00:42:53,856 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-19 00:42:53,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770964338] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 00:42:53,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 00:42:53,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 20 [2024-11-19 00:42:53,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151268334] [2024-11-19 00:42:53,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 00:42:53,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 00:42:53,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:42:53,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 00:42:53,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2024-11-19 00:42:53,859 INFO L87 Difference]: Start difference. First operand 213 states and 263 transitions. Second operand has 20 states, 17 states have (on average 5.764705882352941) internal successors, (98), 19 states have internal predecessors, (98), 10 states have call successors, (48), 4 states have call predecessors, (48), 6 states have return successors, (48), 7 states have call predecessors, (48), 10 states have call successors, (48) [2024-11-19 00:42:54,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:42:54,293 INFO L93 Difference]: Finished difference Result 459 states and 558 transitions. [2024-11-19 00:42:54,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 00:42:54,294 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 5.764705882352941) internal successors, (98), 19 states have internal predecessors, (98), 10 states have call successors, (48), 4 states have call predecessors, (48), 6 states have return successors, (48), 7 states have call predecessors, (48), 10 states have call successors, (48) Word has length 124 [2024-11-19 00:42:54,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:42:54,297 INFO L225 Difference]: With dead ends: 459 [2024-11-19 00:42:54,297 INFO L226 Difference]: Without dead ends: 249 [2024-11-19 00:42:54,298 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=224, Invalid=646, Unknown=0, NotChecked=0, Total=870 [2024-11-19 00:42:54,299 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 320 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 00:42:54,299 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 502 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 00:42:54,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2024-11-19 00:42:54,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 159. [2024-11-19 00:42:54,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 136 states have (on average 1.2205882352941178) internal successors, (166), 136 states have internal predecessors, (166), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-19 00:42:54,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 198 transitions. [2024-11-19 00:42:54,334 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 198 transitions. Word has length 124 [2024-11-19 00:42:54,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:42:54,335 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 198 transitions. [2024-11-19 00:42:54,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 5.764705882352941) internal successors, (98), 19 states have internal predecessors, (98), 10 states have call successors, (48), 4 states have call predecessors, (48), 6 states have return successors, (48), 7 states have call predecessors, (48), 10 states have call successors, (48) [2024-11-19 00:42:54,335 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 198 transitions. [2024-11-19 00:42:54,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-19 00:42:54,336 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:42:54,337 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:42:54,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 00:42:54,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:42:54,538 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:42:54,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:42:54,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1994128982, now seen corresponding path program 1 times [2024-11-19 00:42:54,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:42:54,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634855033] [2024-11-19 00:42:54,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:42:54,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:42:54,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:42:55,245 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-19 00:42:55,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:42:55,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634855033] [2024-11-19 00:42:55,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634855033] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:42:55,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558926690] [2024-11-19 00:42:55,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:42:55,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:42:55,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:42:55,248 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) [2024-11-19 00:42:55,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 00:42:55,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:42:55,416 INFO L255 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-19 00:42:55,420 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:42:55,752 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 [2024-11-19 00:42:56,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 00:42:56,496 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 25 treesize of output 13 [2024-11-19 00:42:56,565 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 35 treesize of output 23 [2024-11-19 00:42:56,569 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 10 proven. 250 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-19 00:42:56,569 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 00:42:56,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558926690] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:42:56,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 00:42:56,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2024-11-19 00:42:56,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962354686] [2024-11-19 00:42:56,662 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 00:42:56,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 00:42:56,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:42:56,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 00:42:56,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2024-11-19 00:42:56,664 INFO L87 Difference]: Start difference. First operand 159 states and 198 transitions. Second operand has 17 states, 15 states have (on average 6.466666666666667) internal successors, (97), 16 states have internal predecessors, (97), 7 states have call successors, (32), 4 states have call predecessors, (32), 5 states have return successors, (32), 5 states have call predecessors, (32), 7 states have call successors, (32) [2024-11-19 00:42:57,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:42:57,115 INFO L93 Difference]: Finished difference Result 319 states and 397 transitions. [2024-11-19 00:42:57,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 00:42:57,120 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 6.466666666666667) internal successors, (97), 16 states have internal predecessors, (97), 7 states have call successors, (32), 4 states have call predecessors, (32), 5 states have return successors, (32), 5 states have call predecessors, (32), 7 states have call successors, (32) Word has length 125 [2024-11-19 00:42:57,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:42:57,121 INFO L225 Difference]: With dead ends: 319 [2024-11-19 00:42:57,121 INFO L226 Difference]: Without dead ends: 163 [2024-11-19 00:42:57,122 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=203, Invalid=667, Unknown=0, NotChecked=0, Total=870 [2024-11-19 00:42:57,122 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 289 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 00:42:57,123 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 404 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 00:42:57,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-11-19 00:42:57,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 159. [2024-11-19 00:42:57,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 136 states have (on average 1.213235294117647) internal successors, (165), 136 states have internal predecessors, (165), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-19 00:42:57,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 197 transitions. [2024-11-19 00:42:57,140 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 197 transitions. Word has length 125 [2024-11-19 00:42:57,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:42:57,141 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 197 transitions. [2024-11-19 00:42:57,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 6.466666666666667) internal successors, (97), 16 states have internal predecessors, (97), 7 states have call successors, (32), 4 states have call predecessors, (32), 5 states have return successors, (32), 5 states have call predecessors, (32), 7 states have call successors, (32) [2024-11-19 00:42:57,141 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 197 transitions. [2024-11-19 00:42:57,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-19 00:42:57,142 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:42:57,142 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:42:57,159 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 00:42:57,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:42:57,343 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:42:57,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:42:57,344 INFO L85 PathProgramCache]: Analyzing trace with hash 220271354, now seen corresponding path program 1 times [2024-11-19 00:42:57,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:42:57,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795418109] [2024-11-19 00:42:57,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:42:57,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:42:57,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 00:42:57,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [313506727] [2024-11-19 00:42:57,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:42:57,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:42:57,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:42:57,430 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) [2024-11-19 00:42:57,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 00:42:57,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:42:57,611 INFO L255 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-19 00:42:57,614 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:42:58,000 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 [2024-11-19 00:42:58,086 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 [2024-11-19 00:42:58,174 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 [2024-11-19 00:42:58,215 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2024-11-19 00:42:58,215 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 00:42:58,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:42:58,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795418109] [2024-11-19 00:42:58,293 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 00:42:58,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313506727] [2024-11-19 00:42:58,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313506727] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:42:58,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-19 00:42:58,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2024-11-19 00:42:58,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671321928] [2024-11-19 00:42:58,294 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-19 00:42:58,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 00:42:58,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:42:58,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 00:42:58,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-19 00:42:58,295 INFO L87 Difference]: Start difference. First operand 159 states and 197 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-19 00:42:58,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:42:58,414 INFO L93 Difference]: Finished difference Result 417 states and 513 transitions. [2024-11-19 00:42:58,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 00:42:58,414 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 126 [2024-11-19 00:42:58,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:42:58,416 INFO L225 Difference]: With dead ends: 417 [2024-11-19 00:42:58,416 INFO L226 Difference]: Without dead ends: 261 [2024-11-19 00:42:58,417 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-19 00:42:58,417 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 56 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 00:42:58,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 365 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 00:42:58,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2024-11-19 00:42:58,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 249. [2024-11-19 00:42:58,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 204 states have (on average 1.1715686274509804) internal successors, (239), 204 states have internal predecessors, (239), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-19 00:42:58,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 303 transitions. [2024-11-19 00:42:58,450 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 303 transitions. Word has length 126 [2024-11-19 00:42:58,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:42:58,451 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 303 transitions. [2024-11-19 00:42:58,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-19 00:42:58,451 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 303 transitions. [2024-11-19 00:42:58,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-19 00:42:58,452 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:42:58,452 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:42:58,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-19 00:42:58,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-19 00:42:58,656 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:42:58,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:42:58,656 INFO L85 PathProgramCache]: Analyzing trace with hash 2052560144, now seen corresponding path program 1 times [2024-11-19 00:42:58,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:42:58,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442466113] [2024-11-19 00:42:58,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:42:58,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:42:58,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 00:42:58,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1796535694] [2024-11-19 00:42:58,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:42:58,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:42:58,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:42:58,722 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 00:42:58,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 00:42:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:42:58,917 INFO L255 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-19 00:42:58,921 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:42:59,862 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 [2024-11-19 00:43:00,080 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 [2024-11-19 00:43:00,258 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 [2024-11-19 00:43:00,668 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2024-11-19 00:43:00,669 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 00:43:00,830 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:43:00,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:43:00,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442466113] [2024-11-19 00:43:00,831 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 00:43:00,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796535694] [2024-11-19 00:43:00,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796535694] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 00:43:00,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 00:43:00,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2024-11-19 00:43:00,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826594835] [2024-11-19 00:43:00,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:43:00,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 00:43:00,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:43:00,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 00:43:00,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-19 00:43:00,832 INFO L87 Difference]: Start difference. First operand 249 states and 303 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 00:43:01,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:43:01,089 INFO L93 Difference]: Finished difference Result 641 states and 765 transitions. [2024-11-19 00:43:01,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 00:43:01,089 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 127 [2024-11-19 00:43:01,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:43:01,091 INFO L225 Difference]: With dead ends: 641 [2024-11-19 00:43:01,092 INFO L226 Difference]: Without dead ends: 395 [2024-11-19 00:43:01,092 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-19 00:43:01,093 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 96 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 00:43:01,093 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 293 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 00:43:01,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2024-11-19 00:43:01,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 391. [2024-11-19 00:43:01,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 314 states have (on average 1.1337579617834395) internal successors, (356), 316 states have internal predecessors, (356), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-19 00:43:01,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 460 transitions. [2024-11-19 00:43:01,148 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 460 transitions. Word has length 127 [2024-11-19 00:43:01,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:43:01,150 INFO L471 AbstractCegarLoop]: Abstraction has 391 states and 460 transitions. [2024-11-19 00:43:01,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 00:43:01,150 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 460 transitions. [2024-11-19 00:43:01,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-19 00:43:01,151 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:43:01,151 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:43:01,170 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-19 00:43:01,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:43:01,352 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:43:01,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:43:01,353 INFO L85 PathProgramCache]: Analyzing trace with hash 177084399, now seen corresponding path program 1 times [2024-11-19 00:43:01,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:43:01,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838959607] [2024-11-19 00:43:01,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:43:01,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:43:01,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 00:43:01,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1320484710] [2024-11-19 00:43:01,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:43:01,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:43:01,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:43:01,426 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 00:43:01,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 00:43:01,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:43:01,629 INFO L255 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-19 00:43:01,633 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:43:02,169 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 [2024-11-19 00:43:02,264 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 [2024-11-19 00:43:02,363 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 [2024-11-19 00:43:02,474 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 00:43:02,474 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 15 treesize of output 15 [2024-11-19 00:43:02,485 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2024-11-19 00:43:02,485 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 00:43:02,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:43:02,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838959607] [2024-11-19 00:43:02,608 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 00:43:02,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320484710] [2024-11-19 00:43:02,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320484710] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:43:02,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-19 00:43:02,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2024-11-19 00:43:02,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869399140] [2024-11-19 00:43:02,609 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-19 00:43:02,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 00:43:02,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:43:02,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 00:43:02,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-19 00:43:02,610 INFO L87 Difference]: Start difference. First operand 391 states and 460 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-19 00:43:02,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:43:02,751 INFO L93 Difference]: Finished difference Result 777 states and 917 transitions. [2024-11-19 00:43:02,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 00:43:02,752 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 128 [2024-11-19 00:43:02,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:43:02,755 INFO L225 Difference]: With dead ends: 777 [2024-11-19 00:43:02,756 INFO L226 Difference]: Without dead ends: 389 [2024-11-19 00:43:02,758 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-19 00:43:02,761 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 63 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 00:43:02,762 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 277 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 00:43:02,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2024-11-19 00:43:02,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 382. [2024-11-19 00:43:02,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 305 states have (on average 1.1278688524590164) internal successors, (344), 307 states have internal predecessors, (344), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-19 00:43:02,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 448 transitions. [2024-11-19 00:43:02,817 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 448 transitions. Word has length 128 [2024-11-19 00:43:02,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:43:02,818 INFO L471 AbstractCegarLoop]: Abstraction has 382 states and 448 transitions. [2024-11-19 00:43:02,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-19 00:43:02,818 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 448 transitions. [2024-11-19 00:43:02,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-19 00:43:02,819 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:43:02,819 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:43:02,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-19 00:43:03,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-19 00:43:03,020 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:43:03,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:43:03,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1660078417, now seen corresponding path program 1 times [2024-11-19 00:43:03,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:43:03,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514933429] [2024-11-19 00:43:03,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:43:03,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:43:03,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:43:03,544 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:43:03,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:43:03,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514933429] [2024-11-19 00:43:03,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514933429] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:43:03,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:43:03,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 00:43:03,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232834280] [2024-11-19 00:43:03,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:43:03,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 00:43:03,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:43:03,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 00:43:03,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 00:43:03,547 INFO L87 Difference]: Start difference. First operand 382 states and 448 transitions. Second operand has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-19 00:43:03,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:43:03,872 INFO L93 Difference]: Finished difference Result 621 states and 738 transitions. [2024-11-19 00:43:03,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 00:43:03,872 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2024-11-19 00:43:03,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:43:03,875 INFO L225 Difference]: With dead ends: 621 [2024-11-19 00:43:03,875 INFO L226 Difference]: Without dead ends: 384 [2024-11-19 00:43:03,876 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-19 00:43:03,877 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 90 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 00:43:03,879 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 352 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 00:43:03,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2024-11-19 00:43:03,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 384. [2024-11-19 00:43:03,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 307 states have (on average 1.1302931596091206) internal successors, (347), 309 states have internal predecessors, (347), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-19 00:43:03,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 451 transitions. [2024-11-19 00:43:03,935 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 451 transitions. Word has length 129 [2024-11-19 00:43:03,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:43:03,936 INFO L471 AbstractCegarLoop]: Abstraction has 384 states and 451 transitions. [2024-11-19 00:43:03,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-19 00:43:03,937 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 451 transitions. [2024-11-19 00:43:03,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-19 00:43:03,939 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:43:03,939 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:43:03,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 00:43:03,939 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:43:03,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:43:03,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1794091923, now seen corresponding path program 1 times [2024-11-19 00:43:03,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:43:03,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559960117] [2024-11-19 00:43:03,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:43:03,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:43:04,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:43:05,311 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:43:05,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:43:05,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559960117] [2024-11-19 00:43:05,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559960117] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:43:05,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:43:05,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-19 00:43:05,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110014394] [2024-11-19 00:43:05,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:43:05,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 00:43:05,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:43:05,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 00:43:05,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-19 00:43:05,314 INFO L87 Difference]: Start difference. First operand 384 states and 451 transitions. Second operand has 13 states, 12 states have (on average 4.333333333333333) internal successors, (52), 13 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-19 00:43:06,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:43:06,204 INFO L93 Difference]: Finished difference Result 816 states and 971 transitions. [2024-11-19 00:43:06,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 00:43:06,205 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.333333333333333) internal successors, (52), 13 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 129 [2024-11-19 00:43:06,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:43:06,209 INFO L225 Difference]: With dead ends: 816 [2024-11-19 00:43:06,209 INFO L226 Difference]: Without dead ends: 577 [2024-11-19 00:43:06,210 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2024-11-19 00:43:06,210 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 381 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 00:43:06,211 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 837 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 00:43:06,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2024-11-19 00:43:06,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 455. [2024-11-19 00:43:06,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 378 states have (on average 1.164021164021164) internal successors, (440), 380 states have internal predecessors, (440), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-19 00:43:06,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 544 transitions. [2024-11-19 00:43:06,294 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 544 transitions. Word has length 129 [2024-11-19 00:43:06,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:43:06,295 INFO L471 AbstractCegarLoop]: Abstraction has 455 states and 544 transitions. [2024-11-19 00:43:06,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.333333333333333) internal successors, (52), 13 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-19 00:43:06,296 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 544 transitions. [2024-11-19 00:43:06,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-19 00:43:06,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:43:06,297 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:43:06,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 00:43:06,297 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:43:06,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:43:06,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1945556348, now seen corresponding path program 1 times [2024-11-19 00:43:06,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:43:06,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863975476] [2024-11-19 00:43:06,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:43:06,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:43:06,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:43:07,296 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:43:07,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:43:07,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863975476] [2024-11-19 00:43:07,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863975476] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:43:07,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:43:07,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-19 00:43:07,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692600229] [2024-11-19 00:43:07,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:43:07,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 00:43:07,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:43:07,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 00:43:07,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-19 00:43:07,299 INFO L87 Difference]: Start difference. First operand 455 states and 544 transitions. Second operand has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 12 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-19 00:43:08,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:43:08,219 INFO L93 Difference]: Finished difference Result 1163 states and 1395 transitions. [2024-11-19 00:43:08,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 00:43:08,220 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 12 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2024-11-19 00:43:08,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:43:08,225 INFO L225 Difference]: With dead ends: 1163 [2024-11-19 00:43:08,226 INFO L226 Difference]: Without dead ends: 853 [2024-11-19 00:43:08,228 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2024-11-19 00:43:08,229 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 446 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 00:43:08,229 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 675 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 00:43:08,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2024-11-19 00:43:08,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 491. [2024-11-19 00:43:08,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 414 states have (on average 1.171497584541063) internal successors, (485), 416 states have internal predecessors, (485), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-19 00:43:08,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 589 transitions. [2024-11-19 00:43:08,338 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 589 transitions. Word has length 129 [2024-11-19 00:43:08,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:43:08,338 INFO L471 AbstractCegarLoop]: Abstraction has 491 states and 589 transitions. [2024-11-19 00:43:08,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 12 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-19 00:43:08,338 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 589 transitions. [2024-11-19 00:43:08,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-19 00:43:08,340 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:43:08,340 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:43:08,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 00:43:08,341 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:43:08,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:43:08,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1956383938, now seen corresponding path program 1 times [2024-11-19 00:43:08,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:43:08,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953226292] [2024-11-19 00:43:08,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:43:08,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:43:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:43:08,656 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:43:08,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:43:08,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953226292] [2024-11-19 00:43:08,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953226292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:43:08,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:43:08,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 00:43:08,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847889364] [2024-11-19 00:43:08,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:43:08,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 00:43:08,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:43:08,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 00:43:08,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 00:43:08,660 INFO L87 Difference]: Start difference. First operand 491 states and 589 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 00:43:08,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:43:08,987 INFO L93 Difference]: Finished difference Result 1014 states and 1231 transitions. [2024-11-19 00:43:08,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 00:43:08,988 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 129 [2024-11-19 00:43:08,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:43:08,992 INFO L225 Difference]: With dead ends: 1014 [2024-11-19 00:43:08,992 INFO L226 Difference]: Without dead ends: 662 [2024-11-19 00:43:08,993 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 00:43:08,994 INFO L432 NwaCegarLoop]: 170 mSDtfsCounter, 63 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 00:43:08,994 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 662 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 00:43:08,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2024-11-19 00:43:09,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 497. [2024-11-19 00:43:09,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 420 states have (on average 1.1690476190476191) internal successors, (491), 422 states have internal predecessors, (491), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-19 00:43:09,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 595 transitions. [2024-11-19 00:43:09,075 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 595 transitions. Word has length 129 [2024-11-19 00:43:09,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:43:09,075 INFO L471 AbstractCegarLoop]: Abstraction has 497 states and 595 transitions. [2024-11-19 00:43:09,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 00:43:09,075 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 595 transitions. [2024-11-19 00:43:09,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-19 00:43:09,076 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:43:09,077 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:43:09,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 00:43:09,077 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:43:09,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:43:09,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1535926485, now seen corresponding path program 1 times [2024-11-19 00:43:09,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:43:09,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292347565] [2024-11-19 00:43:09,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:43:09,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:43:09,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:43:09,392 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:43:09,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:43:09,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292347565] [2024-11-19 00:43:09,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292347565] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:43:09,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:43:09,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 00:43:09,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617550129] [2024-11-19 00:43:09,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:43:09,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 00:43:09,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:43:09,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 00:43:09,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 00:43:09,395 INFO L87 Difference]: Start difference. First operand 497 states and 595 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 00:43:09,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:43:09,715 INFO L93 Difference]: Finished difference Result 1048 states and 1256 transitions. [2024-11-19 00:43:09,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 00:43:09,716 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 129 [2024-11-19 00:43:09,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:43:09,721 INFO L225 Difference]: With dead ends: 1048 [2024-11-19 00:43:09,721 INFO L226 Difference]: Without dead ends: 696 [2024-11-19 00:43:09,722 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 00:43:09,723 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 65 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 00:43:09,724 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 494 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 00:43:09,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2024-11-19 00:43:09,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 486. [2024-11-19 00:43:09,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 409 states have (on average 1.1638141809290954) internal successors, (476), 411 states have internal predecessors, (476), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-19 00:43:09,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 580 transitions. [2024-11-19 00:43:09,812 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 580 transitions. Word has length 129 [2024-11-19 00:43:09,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:43:09,813 INFO L471 AbstractCegarLoop]: Abstraction has 486 states and 580 transitions. [2024-11-19 00:43:09,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 00:43:09,813 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 580 transitions. [2024-11-19 00:43:09,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-19 00:43:09,814 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:43:09,814 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:43:09,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 00:43:09,815 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:43:09,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:43:09,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1928953495, now seen corresponding path program 1 times [2024-11-19 00:43:09,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:43:09,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588836770] [2024-11-19 00:43:09,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:43:09,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:43:09,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:43:10,842 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:43:10,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:43:10,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588836770] [2024-11-19 00:43:10,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588836770] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:43:10,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:43:10,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-19 00:43:10,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160048936] [2024-11-19 00:43:10,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:43:10,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 00:43:10,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:43:10,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 00:43:10,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-11-19 00:43:10,845 INFO L87 Difference]: Start difference. First operand 486 states and 580 transitions. Second operand has 14 states, 13 states have (on average 4.0) internal successors, (52), 14 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-19 00:43:11,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:43:11,862 INFO L93 Difference]: Finished difference Result 925 states and 1111 transitions. [2024-11-19 00:43:11,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 00:43:11,863 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.0) internal successors, (52), 14 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 129 [2024-11-19 00:43:11,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:43:11,866 INFO L225 Difference]: With dead ends: 925 [2024-11-19 00:43:11,866 INFO L226 Difference]: Without dead ends: 584 [2024-11-19 00:43:11,868 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2024-11-19 00:43:11,869 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 172 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 00:43:11,869 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 852 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 00:43:11,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2024-11-19 00:43:11,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 489. [2024-11-19 00:43:11,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 412 states have (on average 1.162621359223301) internal successors, (479), 414 states have internal predecessors, (479), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-19 00:43:11,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 583 transitions. [2024-11-19 00:43:11,957 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 583 transitions. Word has length 129 [2024-11-19 00:43:11,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:43:11,958 INFO L471 AbstractCegarLoop]: Abstraction has 489 states and 583 transitions. [2024-11-19 00:43:11,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.0) internal successors, (52), 14 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-19 00:43:11,958 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 583 transitions. [2024-11-19 00:43:11,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-19 00:43:11,959 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:43:11,960 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:43:11,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 00:43:11,960 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:43:11,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:43:11,960 INFO L85 PathProgramCache]: Analyzing trace with hash -2080417920, now seen corresponding path program 1 times [2024-11-19 00:43:11,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:43:11,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672963375] [2024-11-19 00:43:11,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:43:11,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:43:12,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:43:13,359 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:43:13,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:43:13,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672963375] [2024-11-19 00:43:13,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672963375] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:43:13,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:43:13,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-19 00:43:13,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84550489] [2024-11-19 00:43:13,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:43:13,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 00:43:13,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:43:13,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 00:43:13,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2024-11-19 00:43:13,363 INFO L87 Difference]: Start difference. First operand 489 states and 583 transitions. Second operand has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 20 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-19 00:43:14,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:43:14,631 INFO L93 Difference]: Finished difference Result 1067 states and 1284 transitions. [2024-11-19 00:43:14,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-19 00:43:14,631 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 20 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 129 [2024-11-19 00:43:14,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:43:14,635 INFO L225 Difference]: With dead ends: 1067 [2024-11-19 00:43:14,636 INFO L226 Difference]: Without dead ends: 723 [2024-11-19 00:43:14,637 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=177, Invalid=1155, Unknown=0, NotChecked=0, Total=1332 [2024-11-19 00:43:14,638 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 353 mSDsluCounter, 1443 mSDsCounter, 0 mSdLazyCounter, 1331 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 1582 SdHoareTripleChecker+Invalid, 1386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 00:43:14,638 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 1582 Invalid, 1386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1331 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 00:43:14,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2024-11-19 00:43:14,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 537. [2024-11-19 00:43:14,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 460 states have (on average 1.1782608695652175) internal successors, (542), 462 states have internal predecessors, (542), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-19 00:43:14,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 646 transitions. [2024-11-19 00:43:14,739 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 646 transitions. Word has length 129 [2024-11-19 00:43:14,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:43:14,740 INFO L471 AbstractCegarLoop]: Abstraction has 537 states and 646 transitions. [2024-11-19 00:43:14,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 20 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-19 00:43:14,740 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 646 transitions. [2024-11-19 00:43:14,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-19 00:43:14,741 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:43:14,742 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:43:14,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 00:43:14,742 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:43:14,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:43:14,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1165208360, now seen corresponding path program 1 times [2024-11-19 00:43:14,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:43:14,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455444501] [2024-11-19 00:43:14,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:43:14,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:43:14,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:43:15,186 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:43:15,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:43:15,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455444501] [2024-11-19 00:43:15,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455444501] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:43:15,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:43:15,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 00:43:15,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001375848] [2024-11-19 00:43:15,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:43:15,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 00:43:15,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:43:15,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 00:43:15,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 00:43:15,188 INFO L87 Difference]: Start difference. First operand 537 states and 646 transitions. Second operand has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-19 00:43:15,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:43:15,575 INFO L93 Difference]: Finished difference Result 975 states and 1180 transitions. [2024-11-19 00:43:15,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 00:43:15,576 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2024-11-19 00:43:15,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:43:15,579 INFO L225 Difference]: With dead ends: 975 [2024-11-19 00:43:15,579 INFO L226 Difference]: Without dead ends: 583 [2024-11-19 00:43:15,580 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-19 00:43:15,581 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 119 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 00:43:15,581 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 350 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 00:43:15,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2024-11-19 00:43:15,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 537. [2024-11-19 00:43:15,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 460 states have (on average 1.1760869565217391) internal successors, (541), 462 states have internal predecessors, (541), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-19 00:43:15,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 645 transitions. [2024-11-19 00:43:15,662 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 645 transitions. Word has length 129 [2024-11-19 00:43:15,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:43:15,663 INFO L471 AbstractCegarLoop]: Abstraction has 537 states and 645 transitions. [2024-11-19 00:43:15,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-19 00:43:15,663 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 645 transitions. [2024-11-19 00:43:15,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-19 00:43:15,664 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:43:15,664 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:43:15,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-19 00:43:15,665 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:43:15,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:43:15,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1299221866, now seen corresponding path program 1 times [2024-11-19 00:43:15,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:43:15,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053333351] [2024-11-19 00:43:15,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:43:15,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:43:15,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:43:16,613 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:43:16,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:43:16,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053333351] [2024-11-19 00:43:16,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053333351] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:43:16,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:43:16,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-19 00:43:16,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977852249] [2024-11-19 00:43:16,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:43:16,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 00:43:16,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:43:16,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 00:43:16,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-19 00:43:16,615 INFO L87 Difference]: Start difference. First operand 537 states and 645 transitions. Second operand has 11 states, 10 states have (on average 5.2) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-19 00:43:17,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:43:17,297 INFO L93 Difference]: Finished difference Result 1076 states and 1291 transitions. [2024-11-19 00:43:17,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 00:43:17,298 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.2) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 129 [2024-11-19 00:43:17,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:43:17,302 INFO L225 Difference]: With dead ends: 1076 [2024-11-19 00:43:17,302 INFO L226 Difference]: Without dead ends: 684 [2024-11-19 00:43:17,303 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2024-11-19 00:43:17,304 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 282 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 00:43:17,304 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 505 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 00:43:17,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2024-11-19 00:43:17,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 534. [2024-11-19 00:43:17,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 457 states have (on average 1.1706783369803064) internal successors, (535), 459 states have internal predecessors, (535), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-19 00:43:17,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 639 transitions. [2024-11-19 00:43:17,439 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 639 transitions. Word has length 129 [2024-11-19 00:43:17,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:43:17,440 INFO L471 AbstractCegarLoop]: Abstraction has 534 states and 639 transitions. [2024-11-19 00:43:17,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.2) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-19 00:43:17,440 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 639 transitions. [2024-11-19 00:43:17,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-19 00:43:17,442 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:43:17,442 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:43:17,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-19 00:43:17,442 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:43:17,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:43:17,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1434083438, now seen corresponding path program 1 times [2024-11-19 00:43:17,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:43:17,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404170668] [2024-11-19 00:43:17,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:43:17,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:43:17,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:43:19,202 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:43:19,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:43:19,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404170668] [2024-11-19 00:43:19,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404170668] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:43:19,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:43:19,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-19 00:43:19,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823710763] [2024-11-19 00:43:19,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:43:19,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 00:43:19,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:43:19,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 00:43:19,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2024-11-19 00:43:19,205 INFO L87 Difference]: Start difference. First operand 534 states and 639 transitions. Second operand has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 20 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-19 00:43:21,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:43:21,282 INFO L93 Difference]: Finished difference Result 1042 states and 1250 transitions. [2024-11-19 00:43:21,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-19 00:43:21,283 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 20 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2024-11-19 00:43:21,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:43:21,286 INFO L225 Difference]: With dead ends: 1042 [2024-11-19 00:43:21,286 INFO L226 Difference]: Without dead ends: 653 [2024-11-19 00:43:21,288 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=163, Invalid=1243, Unknown=0, NotChecked=0, Total=1406 [2024-11-19 00:43:21,288 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 160 mSDsluCounter, 1625 mSDsCounter, 0 mSdLazyCounter, 1373 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 1395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-19 00:43:21,289 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 1775 Invalid, 1395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1373 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-19 00:43:21,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2024-11-19 00:43:21,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 540. [2024-11-19 00:43:21,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 463 states have (on average 1.1684665226781858) internal successors, (541), 465 states have internal predecessors, (541), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-19 00:43:21,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 645 transitions. [2024-11-19 00:43:21,382 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 645 transitions. Word has length 129 [2024-11-19 00:43:21,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:43:21,383 INFO L471 AbstractCegarLoop]: Abstraction has 540 states and 645 transitions. [2024-11-19 00:43:21,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 20 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-19 00:43:21,383 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 645 transitions. [2024-11-19 00:43:21,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-19 00:43:21,384 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:43:21,385 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:43:21,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-19 00:43:21,385 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:43:21,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:43:21,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1585547863, now seen corresponding path program 1 times [2024-11-19 00:43:21,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:43:21,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947023473] [2024-11-19 00:43:21,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:43:21,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:43:21,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:43:22,287 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:43:22,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:43:22,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947023473] [2024-11-19 00:43:22,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947023473] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:43:22,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:43:22,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-19 00:43:22,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093251406] [2024-11-19 00:43:22,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:43:22,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 00:43:22,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:43:22,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 00:43:22,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-19 00:43:22,289 INFO L87 Difference]: Start difference. First operand 540 states and 645 transitions. Second operand has 13 states, 12 states have (on average 4.333333333333333) internal successors, (52), 13 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-19 00:43:22,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:43:22,942 INFO L93 Difference]: Finished difference Result 1058 states and 1264 transitions. [2024-11-19 00:43:22,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 00:43:22,943 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.333333333333333) internal successors, (52), 13 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 129 [2024-11-19 00:43:22,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:43:22,946 INFO L225 Difference]: With dead ends: 1058 [2024-11-19 00:43:22,946 INFO L226 Difference]: Without dead ends: 663 [2024-11-19 00:43:22,947 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2024-11-19 00:43:22,948 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 279 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 00:43:22,948 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 722 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 00:43:22,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2024-11-19 00:43:23,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 537. [2024-11-19 00:43:23,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 460 states have (on average 1.1630434782608696) internal successors, (535), 462 states have internal predecessors, (535), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-19 00:43:23,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 639 transitions. [2024-11-19 00:43:23,037 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 639 transitions. Word has length 129 [2024-11-19 00:43:23,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:43:23,038 INFO L471 AbstractCegarLoop]: Abstraction has 537 states and 639 transitions. [2024-11-19 00:43:23,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.333333333333333) internal successors, (52), 13 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-19 00:43:23,038 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 639 transitions. [2024-11-19 00:43:23,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-19 00:43:23,039 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:43:23,040 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:43:23,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-19 00:43:23,040 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:43:23,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:43:23,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1722118031, now seen corresponding path program 1 times [2024-11-19 00:43:23,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:43:23,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080197280] [2024-11-19 00:43:23,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:43:23,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:43:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:43:23,553 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:43:23,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:43:23,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080197280] [2024-11-19 00:43:23,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080197280] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:43:23,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:43:23,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 00:43:23,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710229328] [2024-11-19 00:43:23,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:43:23,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 00:43:23,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:43:23,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 00:43:23,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-19 00:43:23,555 INFO L87 Difference]: Start difference. First operand 537 states and 639 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 00:43:24,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:43:24,170 INFO L93 Difference]: Finished difference Result 1147 states and 1374 transitions. [2024-11-19 00:43:24,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 00:43:24,170 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 129 [2024-11-19 00:43:24,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:43:24,173 INFO L225 Difference]: With dead ends: 1147 [2024-11-19 00:43:24,173 INFO L226 Difference]: Without dead ends: 755 [2024-11-19 00:43:24,173 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-11-19 00:43:24,174 INFO L432 NwaCegarLoop]: 167 mSDtfsCounter, 228 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 00:43:24,174 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 734 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 00:43:24,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2024-11-19 00:43:24,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 572. [2024-11-19 00:43:24,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 495 states have (on average 1.1696969696969697) internal successors, (579), 497 states have internal predecessors, (579), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-19 00:43:24,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 683 transitions. [2024-11-19 00:43:24,275 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 683 transitions. Word has length 129 [2024-11-19 00:43:24,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:43:24,275 INFO L471 AbstractCegarLoop]: Abstraction has 572 states and 683 transitions. [2024-11-19 00:43:24,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 00:43:24,276 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 683 transitions. [2024-11-19 00:43:24,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-19 00:43:24,277 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:43:24,277 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:43:24,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-19 00:43:24,277 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:43:24,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:43:24,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1873582456, now seen corresponding path program 1 times [2024-11-19 00:43:24,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:43:24,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206919642] [2024-11-19 00:43:24,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:43:24,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:43:24,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:43:26,298 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:43:26,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:43:26,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206919642] [2024-11-19 00:43:26,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206919642] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:43:26,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:43:26,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-19 00:43:26,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398086473] [2024-11-19 00:43:26,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:43:26,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 00:43:26,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:43:26,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 00:43:26,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2024-11-19 00:43:26,300 INFO L87 Difference]: Start difference. First operand 572 states and 683 transitions. Second operand has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 20 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-19 00:43:28,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:43:28,545 INFO L93 Difference]: Finished difference Result 1133 states and 1359 transitions. [2024-11-19 00:43:28,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-19 00:43:28,546 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 20 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2024-11-19 00:43:28,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:43:28,549 INFO L225 Difference]: With dead ends: 1133 [2024-11-19 00:43:28,549 INFO L226 Difference]: Without dead ends: 706 [2024-11-19 00:43:28,550 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=159, Invalid=1247, Unknown=0, NotChecked=0, Total=1406 [2024-11-19 00:43:28,551 INFO L432 NwaCegarLoop]: 147 mSDtfsCounter, 160 mSDsluCounter, 1673 mSDsCounter, 0 mSdLazyCounter, 1557 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 1820 SdHoareTripleChecker+Invalid, 1579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-19 00:43:28,551 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 1820 Invalid, 1579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1557 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-19 00:43:28,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2024-11-19 00:43:28,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 578. [2024-11-19 00:43:28,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 501 states have (on average 1.1676646706586826) internal successors, (585), 503 states have internal predecessors, (585), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-19 00:43:28,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 689 transitions. [2024-11-19 00:43:28,654 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 689 transitions. Word has length 129 [2024-11-19 00:43:28,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:43:28,655 INFO L471 AbstractCegarLoop]: Abstraction has 578 states and 689 transitions. [2024-11-19 00:43:28,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 20 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-19 00:43:28,655 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 689 transitions. [2024-11-19 00:43:28,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-19 00:43:28,656 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:43:28,657 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:43:28,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-19 00:43:28,657 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:43:28,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:43:28,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1856979603, now seen corresponding path program 1 times [2024-11-19 00:43:28,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:43:28,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571804289] [2024-11-19 00:43:28,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:43:28,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:43:28,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:43:29,452 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:43:29,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:43:29,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571804289] [2024-11-19 00:43:29,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571804289] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:43:29,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:43:29,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-19 00:43:29,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821399964] [2024-11-19 00:43:29,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:43:29,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 00:43:29,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:43:29,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 00:43:29,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-19 00:43:29,454 INFO L87 Difference]: Start difference. First operand 578 states and 689 transitions. Second operand has 11 states, 10 states have (on average 5.2) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-19 00:43:30,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:43:30,001 INFO L93 Difference]: Finished difference Result 1149 states and 1361 transitions. [2024-11-19 00:43:30,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 00:43:30,002 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.2) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 129 [2024-11-19 00:43:30,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:43:30,005 INFO L225 Difference]: With dead ends: 1149 [2024-11-19 00:43:30,005 INFO L226 Difference]: Without dead ends: 716 [2024-11-19 00:43:30,005 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2024-11-19 00:43:30,006 INFO L432 NwaCegarLoop]: 155 mSDtfsCounter, 227 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 00:43:30,006 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 719 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 00:43:30,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2024-11-19 00:43:30,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 563. [2024-11-19 00:43:30,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 486 states have (on average 1.1296296296296295) internal successors, (549), 488 states have internal predecessors, (549), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-19 00:43:30,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 653 transitions. [2024-11-19 00:43:30,107 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 653 transitions. Word has length 129 [2024-11-19 00:43:30,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:43:30,108 INFO L471 AbstractCegarLoop]: Abstraction has 563 states and 653 transitions. [2024-11-19 00:43:30,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.2) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-19 00:43:30,108 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 653 transitions. [2024-11-19 00:43:30,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-19 00:43:30,109 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:43:30,109 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:43:30,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-19 00:43:30,110 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:43:30,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:43:30,110 INFO L85 PathProgramCache]: Analyzing trace with hash -2007595962, now seen corresponding path program 1 times [2024-11-19 00:43:30,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:43:30,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147998820] [2024-11-19 00:43:30,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:43:30,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:43:30,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:43:30,292 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:43:30,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:43:30,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147998820] [2024-11-19 00:43:30,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147998820] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:43:30,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:43:30,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 00:43:30,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458156720] [2024-11-19 00:43:30,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:43:30,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 00:43:30,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:43:30,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 00:43:30,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 00:43:30,295 INFO L87 Difference]: Start difference. First operand 563 states and 653 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 00:43:30,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:43:30,472 INFO L93 Difference]: Finished difference Result 945 states and 1102 transitions. [2024-11-19 00:43:30,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 00:43:30,472 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 129 [2024-11-19 00:43:30,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:43:30,475 INFO L225 Difference]: With dead ends: 945 [2024-11-19 00:43:30,475 INFO L226 Difference]: Without dead ends: 527 [2024-11-19 00:43:30,476 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 00:43:30,477 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 7 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 00:43:30,477 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 408 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 00:43:30,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2024-11-19 00:43:30,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 527. [2024-11-19 00:43:30,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 450 states have (on average 1.1244444444444444) internal successors, (506), 452 states have internal predecessors, (506), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-19 00:43:30,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 610 transitions. [2024-11-19 00:43:30,575 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 610 transitions. Word has length 129 [2024-11-19 00:43:30,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:43:30,576 INFO L471 AbstractCegarLoop]: Abstraction has 527 states and 610 transitions. [2024-11-19 00:43:30,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 00:43:30,576 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 610 transitions. [2024-11-19 00:43:30,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-19 00:43:30,577 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:43:30,577 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:43:30,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-19 00:43:30,578 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:43:30,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:43:30,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1227247974, now seen corresponding path program 1 times [2024-11-19 00:43:30,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:43:30,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598126075] [2024-11-19 00:43:30,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:43:30,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:43:30,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat