./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/vogal-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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/loops/vogal-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0004a4c1c8347096eaba7e87038be30bb20b14d3b5abd082e79b4b4e835a243e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 22:13:14,325 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 22:13:14,397 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 22:13:14,402 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 22:13:14,404 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 22:13:14,429 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 22:13:14,430 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 22:13:14,430 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 22:13:14,431 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 22:13:14,432 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 22:13:14,433 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 22:13:14,434 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 22:13:14,434 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 22:13:14,435 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 22:13:14,436 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 22:13:14,437 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 22:13:14,437 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 22:13:14,437 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 22:13:14,437 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 22:13:14,438 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 22:13:14,440 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 22:13:14,441 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 22:13:14,441 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 22:13:14,441 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 22:13:14,441 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 22:13:14,448 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 22:13:14,448 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 22:13:14,449 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 22:13:14,449 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 22:13:14,449 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 22:13:14,449 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 22:13:14,450 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 22:13:14,450 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 22:13:14,451 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 22:13:14,451 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 22:13:14,451 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 22:13:14,451 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 22:13:14,452 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 22:13:14,452 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 22:13:14,452 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 22:13:14,452 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 22:13:14,453 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 22:13:14,453 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0004a4c1c8347096eaba7e87038be30bb20b14d3b5abd082e79b4b4e835a243e [2024-11-09 22:13:14,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 22:13:14,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 22:13:14,730 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 22:13:14,732 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 22:13:14,732 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 22:13:14,733 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/vogal-1.i [2024-11-09 22:13:16,135 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 22:13:16,306 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 22:13:16,308 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/vogal-1.i [2024-11-09 22:13:16,322 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f481a2d1/b596eecff0b540539fcde2f44a2fc8aa/FLAGe6df47525 [2024-11-09 22:13:16,337 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f481a2d1/b596eecff0b540539fcde2f44a2fc8aa [2024-11-09 22:13:16,341 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 22:13:16,343 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 22:13:16,345 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 22:13:16,346 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 22:13:16,350 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 22:13:16,351 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:13:16" (1/1) ... [2024-11-09 22:13:16,352 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18a7f67c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:13:16, skipping insertion in model container [2024-11-09 22:13:16,352 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:13:16" (1/1) ... [2024-11-09 22:13:16,373 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 22:13:16,566 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/loops/vogal-1.i[895,908] [2024-11-09 22:13:16,598 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 22:13:16,611 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 22:13:16,624 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/loops/vogal-1.i[895,908] [2024-11-09 22:13:16,644 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 22:13:16,667 INFO L204 MainTranslator]: Completed translation [2024-11-09 22:13:16,667 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:13:16 WrapperNode [2024-11-09 22:13:16,667 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 22:13:16,669 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 22:13:16,669 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 22:13:16,669 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 22:13:16,676 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:13:16" (1/1) ... [2024-11-09 22:13:16,688 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:13:16" (1/1) ... [2024-11-09 22:13:16,724 INFO L138 Inliner]: procedures = 18, calls = 34, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 124 [2024-11-09 22:13:16,724 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 22:13:16,725 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 22:13:16,725 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 22:13:16,725 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 22:13:16,736 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:13:16" (1/1) ... [2024-11-09 22:13:16,736 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:13:16" (1/1) ... [2024-11-09 22:13:16,738 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:13:16" (1/1) ... [2024-11-09 22:13:16,749 INFO L175 MemorySlicer]: Split 22 memory accesses to 3 slices as follows [2, 14, 6]. 64 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 13 writes are split as follows [0, 12, 1]. [2024-11-09 22:13:16,749 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:13:16" (1/1) ... [2024-11-09 22:13:16,749 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:13:16" (1/1) ... [2024-11-09 22:13:16,755 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:13:16" (1/1) ... [2024-11-09 22:13:16,756 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:13:16" (1/1) ... [2024-11-09 22:13:16,757 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:13:16" (1/1) ... [2024-11-09 22:13:16,758 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:13:16" (1/1) ... [2024-11-09 22:13:16,760 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 22:13:16,761 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 22:13:16,761 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 22:13:16,762 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 22:13:16,762 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:13:16" (1/1) ... [2024-11-09 22:13:16,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 22:13:16,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:13:16,797 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) [2024-11-09 22:13:16,800 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 [2024-11-09 22:13:16,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 22:13:16,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 22:13:16,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 22:13:16,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 22:13:16,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-09 22:13:16,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-09 22:13:16,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-09 22:13:16,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 22:13:16,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 22:13:16,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 22:13:16,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 22:13:16,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 22:13:16,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 22:13:16,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 22:13:16,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 22:13:16,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 22:13:16,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 22:13:16,931 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 22:13:16,933 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 22:13:17,116 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L30: call ULTIMATE.dealloc(main_~#input_string~0#1.base, main_~#input_string~0#1.offset);havoc main_~#input_string~0#1.base, main_~#input_string~0#1.offset;call ULTIMATE.dealloc(main_~#vogal_array~0#1.base, main_~#vogal_array~0#1.offset);havoc main_~#vogal_array~0#1.base, main_~#vogal_array~0#1.offset; [2024-11-09 22:13:17,126 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-09 22:13:17,127 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 22:13:17,144 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 22:13:17,144 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 22:13:17,145 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 10:13:17 BoogieIcfgContainer [2024-11-09 22:13:17,145 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 22:13:17,148 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 22:13:17,148 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 22:13:17,153 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 22:13:17,154 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:13:16" (1/3) ... [2024-11-09 22:13:17,155 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d62bdca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:13:17, skipping insertion in model container [2024-11-09 22:13:17,155 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:13:16" (2/3) ... [2024-11-09 22:13:17,156 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d62bdca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:13:17, skipping insertion in model container [2024-11-09 22:13:17,157 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 10:13:17" (3/3) ... [2024-11-09 22:13:17,158 INFO L112 eAbstractionObserver]: Analyzing ICFG vogal-1.i [2024-11-09 22:13:17,178 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 22:13:17,179 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 22:13:17,236 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 22:13:17,244 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;@1a65da24, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 22:13:17,244 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 22:13:17,250 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 32 states have (on average 1.53125) internal successors, (49), 33 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:13:17,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 22:13:17,257 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:13:17,261 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:13:17,261 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:13:17,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:13:17,267 INFO L85 PathProgramCache]: Analyzing trace with hash -457967504, now seen corresponding path program 1 times [2024-11-09 22:13:17,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:13:17,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378887930] [2024-11-09 22:13:17,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:13:17,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:13:17,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:13:17,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:13:17,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:13:17,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378887930] [2024-11-09 22:13:17,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378887930] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:13:17,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:13:17,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 22:13:17,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117060240] [2024-11-09 22:13:17,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:13:17,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 22:13:17,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:13:17,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 22:13:17,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 22:13:17,539 INFO L87 Difference]: Start difference. First operand has 34 states, 32 states have (on average 1.53125) internal successors, (49), 33 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:13:17,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:13:17,556 INFO L93 Difference]: Finished difference Result 63 states and 91 transitions. [2024-11-09 22:13:17,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 22:13:17,560 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-09 22:13:17,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:13:17,567 INFO L225 Difference]: With dead ends: 63 [2024-11-09 22:13:17,567 INFO L226 Difference]: Without dead ends: 29 [2024-11-09 22:13:17,570 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 22:13:17,575 INFO L432 NwaCegarLoop]: 41 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, 41 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 [2024-11-09 22:13:17,577 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:13:17,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-09 22:13:17,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-11-09 22:13:17,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:13:17,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2024-11-09 22:13:17,611 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 14 [2024-11-09 22:13:17,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:13:17,612 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2024-11-09 22:13:17,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:13:17,613 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2024-11-09 22:13:17,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-09 22:13:17,614 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:13:17,614 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:13:17,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 22:13:17,616 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:13:17,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:13:17,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1875363675, now seen corresponding path program 1 times [2024-11-09 22:13:17,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:13:17,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392467435] [2024-11-09 22:13:17,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:13:17,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:13:17,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:13:17,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:13:17,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:13:17,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392467435] [2024-11-09 22:13:17,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392467435] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:13:17,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:13:17,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 22:13:17,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673215518] [2024-11-09 22:13:17,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:13:17,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 22:13:17,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:13:17,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 22:13:17,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 22:13:17,837 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:13:17,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:13:17,896 INFO L93 Difference]: Finished difference Result 75 states and 94 transitions. [2024-11-09 22:13:17,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 22:13:17,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-09 22:13:17,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:13:17,898 INFO L225 Difference]: With dead ends: 75 [2024-11-09 22:13:17,898 INFO L226 Difference]: Without dead ends: 50 [2024-11-09 22:13:17,899 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 22:13:17,900 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 21 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:13:17,901 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 52 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:13:17,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-09 22:13:17,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 31. [2024-11-09 22:13:17,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:13:17,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2024-11-09 22:13:17,910 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 18 [2024-11-09 22:13:17,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:13:17,910 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2024-11-09 22:13:17,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:13:17,911 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2024-11-09 22:13:17,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 22:13:17,912 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:13:17,912 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:13:17,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 22:13:17,912 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:13:17,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:13:17,913 INFO L85 PathProgramCache]: Analyzing trace with hash -903648668, now seen corresponding path program 1 times [2024-11-09 22:13:17,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:13:17,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098785891] [2024-11-09 22:13:17,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:13:17,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:13:17,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:13:18,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:13:18,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:13:18,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098785891] [2024-11-09 22:13:18,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098785891] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:13:18,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552915278] [2024-11-09 22:13:18,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:13:18,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:13:18,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:13:18,191 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) [2024-11-09 22:13:18,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 22:13:18,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:13:18,286 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 22:13:18,292 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:13:18,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 22:13:18,379 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 22:13:18,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552915278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:13:18,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 22:13:18,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2024-11-09 22:13:18,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061235731] [2024-11-09 22:13:18,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:13:18,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:13:18,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:13:18,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:13:18,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 22:13:18,382 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:13:18,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:13:18,421 INFO L93 Difference]: Finished difference Result 59 states and 74 transitions. [2024-11-09 22:13:18,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:13:18,422 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-09 22:13:18,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:13:18,423 INFO L225 Difference]: With dead ends: 59 [2024-11-09 22:13:18,423 INFO L226 Difference]: Without dead ends: 54 [2024-11-09 22:13:18,424 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 22:13:18,425 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 25 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:13:18,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 129 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:13:18,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-09 22:13:18,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 46. [2024-11-09 22:13:18,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.288888888888889) internal successors, (58), 45 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:13:18,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2024-11-09 22:13:18,437 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 58 transitions. Word has length 20 [2024-11-09 22:13:18,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:13:18,438 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 58 transitions. [2024-11-09 22:13:18,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:13:18,441 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 58 transitions. [2024-11-09 22:13:18,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-09 22:13:18,442 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:13:18,442 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:13:18,456 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 22:13:18,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:13:18,647 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:13:18,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:13:18,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1864446366, now seen corresponding path program 1 times [2024-11-09 22:13:18,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:13:18,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132492100] [2024-11-09 22:13:18,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:13:18,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:13:18,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:13:18,835 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 22:13:18,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:13:18,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132492100] [2024-11-09 22:13:18,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132492100] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:13:18,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053846873] [2024-11-09 22:13:18,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:13:18,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:13:18,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:13:18,842 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) [2024-11-09 22:13:18,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 22:13:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:13:18,944 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 22:13:18,946 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:13:19,040 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 22:13:19,042 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:13:19,207 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-09 22:13:19,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 30 [2024-11-09 22:13:19,231 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 22:13:19,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053846873] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 22:13:19,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 22:13:19,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 8] total 12 [2024-11-09 22:13:19,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693648894] [2024-11-09 22:13:19,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:13:19,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 22:13:19,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:13:19,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 22:13:19,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-09 22:13:19,234 INFO L87 Difference]: Start difference. First operand 46 states and 58 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:13:19,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:13:19,404 INFO L93 Difference]: Finished difference Result 89 states and 113 transitions. [2024-11-09 22:13:19,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 22:13:19,405 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-09 22:13:19,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:13:19,406 INFO L225 Difference]: With dead ends: 89 [2024-11-09 22:13:19,406 INFO L226 Difference]: Without dead ends: 48 [2024-11-09 22:13:19,406 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2024-11-09 22:13:19,407 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 8 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:13:19,408 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 163 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:13:19,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-09 22:13:19,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-11-09 22:13:19,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.2765957446808511) internal successors, (60), 47 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:13:19,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 60 transitions. [2024-11-09 22:13:19,413 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 60 transitions. Word has length 29 [2024-11-09 22:13:19,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:13:19,413 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 60 transitions. [2024-11-09 22:13:19,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:13:19,414 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 60 transitions. [2024-11-09 22:13:19,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 22:13:19,415 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:13:19,415 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:13:19,432 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 22:13:19,615 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,SelfDestructingSolverStorable3 [2024-11-09 22:13:19,616 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:13:19,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:13:19,617 INFO L85 PathProgramCache]: Analyzing trace with hash 43597891, now seen corresponding path program 1 times [2024-11-09 22:13:19,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:13:19,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969305005] [2024-11-09 22:13:19,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:13:19,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:13:19,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:13:19,737 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 22:13:19,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:13:19,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969305005] [2024-11-09 22:13:19,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969305005] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:13:19,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447596365] [2024-11-09 22:13:19,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:13:19,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:13:19,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:13:19,740 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) [2024-11-09 22:13:19,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 22:13:19,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:13:19,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 22:13:19,821 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:13:19,842 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 60 treesize of output 59 [2024-11-09 22:13:22,967 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 22:13:22,968 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:13:23,963 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 22:13:23,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447596365] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 22:13:23,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 22:13:23,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 10] total 20 [2024-11-09 22:13:23,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563333053] [2024-11-09 22:13:23,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:13:23,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 22:13:23,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:13:23,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 22:13:23,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2024-11-09 22:13:23,969 INFO L87 Difference]: Start difference. First operand 48 states and 60 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:13:24,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:13:24,417 INFO L93 Difference]: Finished difference Result 98 states and 123 transitions. [2024-11-09 22:13:24,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 22:13:24,417 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-09 22:13:24,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:13:24,418 INFO L225 Difference]: With dead ends: 98 [2024-11-09 22:13:24,418 INFO L226 Difference]: Without dead ends: 86 [2024-11-09 22:13:24,419 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=130, Invalid=422, Unknown=0, NotChecked=0, Total=552 [2024-11-09 22:13:24,420 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 94 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:13:24,420 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 158 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:13:24,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-09 22:13:24,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 56. [2024-11-09 22:13:24,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.2727272727272727) internal successors, (70), 55 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:13:24,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 70 transitions. [2024-11-09 22:13:24,433 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 70 transitions. Word has length 31 [2024-11-09 22:13:24,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:13:24,433 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 70 transitions. [2024-11-09 22:13:24,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:13:24,434 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 70 transitions. [2024-11-09 22:13:24,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 22:13:24,434 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:13:24,434 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:13:24,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 22:13:24,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:13:24,636 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:13:24,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:13:24,637 INFO L85 PathProgramCache]: Analyzing trace with hash 396904780, now seen corresponding path program 1 times [2024-11-09 22:13:24,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:13:24,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571880692] [2024-11-09 22:13:24,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:13:24,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:13:24,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:13:24,729 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 22:13:24,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:13:24,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571880692] [2024-11-09 22:13:24,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571880692] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:13:24,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716330633] [2024-11-09 22:13:24,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:13:24,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:13:24,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:13:24,733 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) [2024-11-09 22:13:24,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 22:13:24,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:13:24,809 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-09 22:13:24,811 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:13:24,940 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 16 treesize of output 8 [2024-11-09 22:13:24,950 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 22:13:24,950 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:13:25,061 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-09 22:13:25,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 31 [2024-11-09 22:13:25,097 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 22:13:25,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716330633] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:13:25,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:13:25,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9, 7] total 15 [2024-11-09 22:13:25,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618276337] [2024-11-09 22:13:25,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:13:25,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 22:13:25,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:13:25,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 22:13:25,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-11-09 22:13:25,099 INFO L87 Difference]: Start difference. First operand 56 states and 70 transitions. Second operand has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:13:25,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:13:25,269 INFO L93 Difference]: Finished difference Result 165 states and 212 transitions. [2024-11-09 22:13:25,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 22:13:25,269 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-09 22:13:25,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:13:25,270 INFO L225 Difference]: With dead ends: 165 [2024-11-09 22:13:25,271 INFO L226 Difference]: Without dead ends: 115 [2024-11-09 22:13:25,271 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2024-11-09 22:13:25,272 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 225 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:13:25,272 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 185 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:13:25,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-09 22:13:25,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 60. [2024-11-09 22:13:25,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.2542372881355932) internal successors, (74), 59 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:13:25,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 74 transitions. [2024-11-09 22:13:25,281 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 74 transitions. Word has length 31 [2024-11-09 22:13:25,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:13:25,281 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 74 transitions. [2024-11-09 22:13:25,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:13:25,282 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 74 transitions. [2024-11-09 22:13:25,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 22:13:25,282 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:13:25,283 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:13:25,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 22:13:25,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:13:25,484 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:13:25,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:13:25,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1112911591, now seen corresponding path program 1 times [2024-11-09 22:13:25,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:13:25,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686734300] [2024-11-09 22:13:25,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:13:25,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:13:25,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:13:25,614 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 22:13:25,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:13:25,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686734300] [2024-11-09 22:13:25,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686734300] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:13:25,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86469402] [2024-11-09 22:13:25,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:13:25,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:13:25,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:13:25,616 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) [2024-11-09 22:13:25,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 22:13:25,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:13:25,693 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 22:13:25,695 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:13:25,923 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 22:13:25,926 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:13:26,085 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 22:13:26,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86469402] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 22:13:26,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 22:13:26,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [5, 10] total 19 [2024-11-09 22:13:26,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376989286] [2024-11-09 22:13:26,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:13:26,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 22:13:26,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:13:26,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 22:13:26,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2024-11-09 22:13:26,088 INFO L87 Difference]: Start difference. First operand 60 states and 74 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:13:26,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:13:26,194 INFO L93 Difference]: Finished difference Result 79 states and 97 transitions. [2024-11-09 22:13:26,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 22:13:26,194 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-09 22:13:26,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:13:26,195 INFO L225 Difference]: With dead ends: 79 [2024-11-09 22:13:26,195 INFO L226 Difference]: Without dead ends: 54 [2024-11-09 22:13:26,196 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2024-11-09 22:13:26,196 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 22 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:13:26,197 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 138 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:13:26,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-09 22:13:26,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-09 22:13:26,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.2452830188679245) internal successors, (66), 53 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:13:26,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 66 transitions. [2024-11-09 22:13:26,209 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 66 transitions. Word has length 37 [2024-11-09 22:13:26,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:13:26,209 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 66 transitions. [2024-11-09 22:13:26,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:13:26,210 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 66 transitions. [2024-11-09 22:13:26,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-09 22:13:26,210 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:13:26,211 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:13:26,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 22:13:26,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:13:26,413 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:13:26,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:13:26,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1867318281, now seen corresponding path program 1 times [2024-11-09 22:13:26,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:13:26,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966744733] [2024-11-09 22:13:26,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:13:26,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:13:26,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:13:26,506 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 22:13:26,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:13:26,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966744733] [2024-11-09 22:13:26,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966744733] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:13:26,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641399369] [2024-11-09 22:13:26,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:13:26,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:13:26,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:13:26,509 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) [2024-11-09 22:13:26,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 22:13:26,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:13:26,589 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 22:13:26,591 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:13:26,600 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 22:13:26,600 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 22:13:26,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641399369] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:13:26,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 22:13:26,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-09 22:13:26,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080062325] [2024-11-09 22:13:26,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:13:26,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 22:13:26,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:13:26,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 22:13:26,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 22:13:26,603 INFO L87 Difference]: Start difference. First operand 54 states and 66 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:13:26,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:13:26,625 INFO L93 Difference]: Finished difference Result 107 states and 137 transitions. [2024-11-09 22:13:26,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 22:13:26,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-09 22:13:26,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:13:26,626 INFO L225 Difference]: With dead ends: 107 [2024-11-09 22:13:26,626 INFO L226 Difference]: Without dead ends: 70 [2024-11-09 22:13:26,626 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 22:13:26,627 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 7 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:13:26,627 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 59 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:13:26,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-09 22:13:26,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 62. [2024-11-09 22:13:26,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.2131147540983607) internal successors, (74), 61 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:13:26,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 74 transitions. [2024-11-09 22:13:26,640 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 74 transitions. Word has length 38 [2024-11-09 22:13:26,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:13:26,640 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 74 transitions. [2024-11-09 22:13:26,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:13:26,641 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 74 transitions. [2024-11-09 22:13:26,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-09 22:13:26,643 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:13:26,643 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:13:26,659 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 22:13:26,843 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 [2024-11-09 22:13:26,844 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:13:26,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:13:26,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1783261638, now seen corresponding path program 1 times [2024-11-09 22:13:26,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:13:26,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373246091] [2024-11-09 22:13:26,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:13:26,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:13:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:13:26,942 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 22:13:26,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:13:26,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373246091] [2024-11-09 22:13:26,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373246091] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:13:26,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475855543] [2024-11-09 22:13:26,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:13:26,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:13:26,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:13:26,945 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) [2024-11-09 22:13:26,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 22:13:27,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:13:27,029 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-09 22:13:27,031 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:13:27,206 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 20 treesize of output 12 [2024-11-09 22:13:27,209 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 16 treesize of output 8 [2024-11-09 22:13:27,219 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 22:13:27,220 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:13:27,427 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 22:13:27,428 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 24 treesize of output 22 [2024-11-09 22:13:27,580 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 22:13:27,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475855543] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:13:27,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:13:27,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 9] total 20 [2024-11-09 22:13:27,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093381376] [2024-11-09 22:13:27,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:13:27,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 22:13:27,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:13:27,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 22:13:27,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2024-11-09 22:13:27,583 INFO L87 Difference]: Start difference. First operand 62 states and 74 transitions. Second operand has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:13:27,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:13:27,931 INFO L93 Difference]: Finished difference Result 321 states and 396 transitions. [2024-11-09 22:13:27,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 22:13:27,932 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2024-11-09 22:13:27,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:13:27,933 INFO L225 Difference]: With dead ends: 321 [2024-11-09 22:13:27,933 INFO L226 Difference]: Without dead ends: 267 [2024-11-09 22:13:27,934 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=145, Invalid=505, Unknown=0, NotChecked=0, Total=650 [2024-11-09 22:13:27,935 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 377 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 22:13:27,935 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 437 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 22:13:27,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2024-11-09 22:13:27,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 87. [2024-11-09 22:13:27,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.197674418604651) internal successors, (103), 86 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:13:27,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 103 transitions. [2024-11-09 22:13:27,956 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 103 transitions. Word has length 42 [2024-11-09 22:13:27,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:13:27,956 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 103 transitions. [2024-11-09 22:13:27,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:13:27,957 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 103 transitions. [2024-11-09 22:13:27,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-09 22:13:27,957 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:13:27,957 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:13:27,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 22:13:28,161 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 [2024-11-09 22:13:28,162 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:13:28,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:13:28,162 INFO L85 PathProgramCache]: Analyzing trace with hash 322281912, now seen corresponding path program 1 times [2024-11-09 22:13:28,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:13:28,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262575362] [2024-11-09 22:13:28,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:13:28,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:13:28,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:13:28,305 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 22:13:28,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:13:28,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262575362] [2024-11-09 22:13:28,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262575362] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:13:28,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985561117] [2024-11-09 22:13:28,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:13:28,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:13:28,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:13:28,308 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) [2024-11-09 22:13:28,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 22:13:28,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:13:28,397 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 22:13:28,398 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:13:28,427 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 22:13:28,427 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:13:28,459 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 22:13:28,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985561117] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:13:28,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:13:28,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 4] total 10 [2024-11-09 22:13:28,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105014045] [2024-11-09 22:13:28,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:13:28,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 22:13:28,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:13:28,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 22:13:28,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-09 22:13:28,462 INFO L87 Difference]: Start difference. First operand 87 states and 103 transitions. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:13:28,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:13:28,799 INFO L93 Difference]: Finished difference Result 485 states and 635 transitions. [2024-11-09 22:13:28,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 22:13:28,800 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-09 22:13:28,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:13:28,803 INFO L225 Difference]: With dead ends: 485 [2024-11-09 22:13:28,803 INFO L226 Difference]: Without dead ends: 408 [2024-11-09 22:13:28,804 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2024-11-09 22:13:28,805 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 264 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 22:13:28,805 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 356 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 22:13:28,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2024-11-09 22:13:28,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 109. [2024-11-09 22:13:28,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.2037037037037037) internal successors, (130), 108 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:13:28,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 130 transitions. [2024-11-09 22:13:28,821 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 130 transitions. Word has length 44 [2024-11-09 22:13:28,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:13:28,822 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 130 transitions. [2024-11-09 22:13:28,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:13:28,822 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 130 transitions. [2024-11-09 22:13:28,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-09 22:13:28,823 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:13:28,823 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:13:28,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 22:13:29,023 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 [2024-11-09 22:13:29,024 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:13:29,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:13:29,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1536709570, now seen corresponding path program 1 times [2024-11-09 22:13:29,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:13:29,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466855403] [2024-11-09 22:13:29,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:13:29,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:13:29,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:13:29,158 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 22:13:29,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:13:29,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466855403] [2024-11-09 22:13:29,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466855403] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:13:29,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540465398] [2024-11-09 22:13:29,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:13:29,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:13:29,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:13:29,161 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) [2024-11-09 22:13:29,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 22:13:29,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:13:29,258 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-09 22:13:29,260 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:13:29,704 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 20 treesize of output 12 [2024-11-09 22:13:29,706 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 16 treesize of output 8 [2024-11-09 22:13:29,719 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 7 proven. 21 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 22:13:29,719 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:13:30,135 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 22:13:30,136 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 26 treesize of output 22 [2024-11-09 22:13:30,351 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-09 22:13:30,351 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 9 [2024-11-09 22:13:30,369 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 22:13:30,369 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 16 treesize of output 3 [2024-11-09 22:13:30,464 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 22:13:30,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540465398] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:13:30,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:13:30,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 14, 14] total 30 [2024-11-09 22:13:30,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39303465] [2024-11-09 22:13:30,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:13:30,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-09 22:13:30,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:13:30,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-09 22:13:30,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=706, Unknown=0, NotChecked=0, Total=870 [2024-11-09 22:13:30,467 INFO L87 Difference]: Start difference. First operand 109 states and 130 transitions. Second operand has 30 states, 30 states have (on average 3.7666666666666666) internal successors, (113), 30 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:13:31,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:13:31,900 INFO L93 Difference]: Finished difference Result 806 states and 1005 transitions. [2024-11-09 22:13:31,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-09 22:13:31,900 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.7666666666666666) internal successors, (113), 30 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-09 22:13:31,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:13:31,903 INFO L225 Difference]: With dead ends: 806 [2024-11-09 22:13:31,903 INFO L226 Difference]: Without dead ends: 709 [2024-11-09 22:13:31,907 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 776 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=630, Invalid=2450, Unknown=0, NotChecked=0, Total=3080 [2024-11-09 22:13:31,908 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 991 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 991 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 22:13:31,908 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [991 Valid, 1142 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 22:13:31,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2024-11-09 22:13:31,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 177. [2024-11-09 22:13:31,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 1.2102272727272727) internal successors, (213), 176 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:13:31,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 213 transitions. [2024-11-09 22:13:31,948 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 213 transitions. Word has length 54 [2024-11-09 22:13:31,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:13:31,949 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 213 transitions. [2024-11-09 22:13:31,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.7666666666666666) internal successors, (113), 30 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:13:31,949 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 213 transitions. [2024-11-09 22:13:31,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-09 22:13:31,951 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:13:31,951 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:13:31,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 22:13:32,152 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 [2024-11-09 22:13:32,152 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:13:32,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:13:32,153 INFO L85 PathProgramCache]: Analyzing trace with hash 355735996, now seen corresponding path program 1 times [2024-11-09 22:13:32,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:13:32,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581146952] [2024-11-09 22:13:32,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:13:32,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:13:32,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:13:32,549 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-09 22:13:32,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:13:32,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581146952] [2024-11-09 22:13:32,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581146952] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:13:32,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197753944] [2024-11-09 22:13:32,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:13:32,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:13:32,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:13:32,552 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) [2024-11-09 22:13:32,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 22:13:32,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:13:32,684 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-09 22:13:32,686 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:13:32,927 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-09 22:13:32,927 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:13:33,259 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-09 22:13:33,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197753944] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:13:33,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:13:33,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13, 13] total 26 [2024-11-09 22:13:33,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258713835] [2024-11-09 22:13:33,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:13:33,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 22:13:33,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:13:33,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 22:13:33,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=528, Unknown=0, NotChecked=0, Total=650 [2024-11-09 22:13:33,262 INFO L87 Difference]: Start difference. First operand 177 states and 213 transitions. Second operand has 26 states, 26 states have (on average 3.8846153846153846) internal successors, (101), 26 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:13:33,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:13:33,749 INFO L93 Difference]: Finished difference Result 515 states and 642 transitions. [2024-11-09 22:13:33,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-09 22:13:33,750 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.8846153846153846) internal successors, (101), 26 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-09 22:13:33,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:13:33,752 INFO L225 Difference]: With dead ends: 515 [2024-11-09 22:13:33,752 INFO L226 Difference]: Without dead ends: 509 [2024-11-09 22:13:33,753 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=274, Invalid=1286, Unknown=0, NotChecked=0, Total=1560 [2024-11-09 22:13:33,753 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 267 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 22:13:33,753 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 494 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 22:13:33,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2024-11-09 22:13:33,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 265. [2024-11-09 22:13:33,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 264 states have (on average 1.2272727272727273) internal successors, (324), 264 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:13:33,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 324 transitions. [2024-11-09 22:13:33,795 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 324 transitions. Word has length 56 [2024-11-09 22:13:33,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:13:33,796 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 324 transitions. [2024-11-09 22:13:33,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.8846153846153846) internal successors, (101), 26 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:13:33,797 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 324 transitions. [2024-11-09 22:13:33,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-09 22:13:33,798 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:13:33,798 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:13:33,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 22:13:33,999 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 [2024-11-09 22:13:33,999 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:13:33,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:13:33,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1441215363, now seen corresponding path program 1 times [2024-11-09 22:13:33,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:13:34,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464038898] [2024-11-09 22:13:34,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:13:34,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:13:34,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:13:35,527 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 22:13:35,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:13:35,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464038898] [2024-11-09 22:13:35,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464038898] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:13:35,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448448271] [2024-11-09 22:13:35,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:13:35,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:13:35,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:13:35,531 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:13:35,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 22:13:35,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:13:35,647 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-09 22:13:35,650 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:13:35,666 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 40 treesize of output 39 [2024-11-09 22:13:36,547 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 19 treesize of output 11 [2024-11-09 22:13:36,550 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 78 treesize of output 60 [2024-11-09 22:13:36,581 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 23 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 22:13:36,581 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:13:37,079 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 22:13:37,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 57 [2024-11-09 22:13:37,319 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 22:13:37,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448448271] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:13:37,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:13:37,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14, 13] total 40 [2024-11-09 22:13:37,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734541131] [2024-11-09 22:13:37,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:13:37,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-09 22:13:37,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:13:37,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-09 22:13:37,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=1318, Unknown=0, NotChecked=0, Total=1560 [2024-11-09 22:13:37,322 INFO L87 Difference]: Start difference. First operand 265 states and 324 transitions. Second operand has 40 states, 40 states have (on average 2.975) internal successors, (119), 40 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:13:42,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:13:42,604 INFO L93 Difference]: Finished difference Result 998 states and 1263 transitions. [2024-11-09 22:13:42,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-11-09 22:13:42,605 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.975) internal successors, (119), 40 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-09 22:13:42,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:13:42,607 INFO L225 Difference]: With dead ends: 998 [2024-11-09 22:13:42,607 INFO L226 Difference]: Without dead ends: 459 [2024-11-09 22:13:42,610 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3167 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=2025, Invalid=8687, Unknown=0, NotChecked=0, Total=10712 [2024-11-09 22:13:42,611 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 523 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:13:42,611 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [523 Valid, 956 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 22:13:42,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2024-11-09 22:13:42,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 370. [2024-11-09 22:13:42,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 369 states have (on average 1.1897018970189701) internal successors, (439), 369 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:13:42,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 439 transitions. [2024-11-09 22:13:42,680 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 439 transitions. Word has length 56 [2024-11-09 22:13:42,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:13:42,680 INFO L471 AbstractCegarLoop]: Abstraction has 370 states and 439 transitions. [2024-11-09 22:13:42,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.975) internal successors, (119), 40 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:13:42,681 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 439 transitions. [2024-11-09 22:13:42,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-09 22:13:42,682 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:13:42,682 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:13:42,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-09 22:13:42,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 22:13:42,883 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:13:42,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:13:42,883 INFO L85 PathProgramCache]: Analyzing trace with hash -830401283, now seen corresponding path program 2 times [2024-11-09 22:13:42,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:13:42,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429181175] [2024-11-09 22:13:42,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:13:42,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:13:42,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:13:44,429 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-09 22:13:44,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:13:44,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429181175] [2024-11-09 22:13:44,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429181175] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:13:44,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774164628] [2024-11-09 22:13:44,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 22:13:44,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:13:44,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:13:44,432 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:13:44,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 22:13:44,542 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 22:13:44,542 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:13:44,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-09 22:13:44,546 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:13:44,898 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 19 treesize of output 11 [2024-11-09 22:13:44,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 22:13:44,917 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 17 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-09 22:13:44,918 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:13:45,217 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 22:13:45,218 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 66 treesize of output 56 [2024-11-09 22:13:45,226 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 22:13:45,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 35 [2024-11-09 22:13:45,312 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-09 22:13:45,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774164628] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:13:45,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:13:45,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 13] total 34 [2024-11-09 22:13:45,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671850989] [2024-11-09 22:13:45,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:13:45,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-09 22:13:45,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:13:45,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-09 22:13:45,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=911, Unknown=0, NotChecked=0, Total=1122 [2024-11-09 22:13:45,315 INFO L87 Difference]: Start difference. First operand 370 states and 439 transitions. Second operand has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:13:46,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:13:46,306 INFO L93 Difference]: Finished difference Result 563 states and 667 transitions. [2024-11-09 22:13:46,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-09 22:13:46,307 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-09 22:13:46,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:13:46,308 INFO L225 Difference]: With dead ends: 563 [2024-11-09 22:13:46,309 INFO L226 Difference]: Without dead ends: 494 [2024-11-09 22:13:46,310 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=709, Invalid=2951, Unknown=0, NotChecked=0, Total=3660 [2024-11-09 22:13:46,310 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 342 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 22:13:46,311 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 474 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 22:13:46,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2024-11-09 22:13:46,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 364. [2024-11-09 22:13:46,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 1.1707988980716253) internal successors, (425), 363 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:13:46,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 425 transitions. [2024-11-09 22:13:46,377 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 425 transitions. Word has length 56 [2024-11-09 22:13:46,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:13:46,377 INFO L471 AbstractCegarLoop]: Abstraction has 364 states and 425 transitions. [2024-11-09 22:13:46,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:13:46,377 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 425 transitions. [2024-11-09 22:13:46,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-09 22:13:46,378 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:13:46,379 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:13:46,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-09 22:13:46,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 22:13:46,583 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:13:46,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:13:46,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1502615750, now seen corresponding path program 2 times [2024-11-09 22:13:46,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:13:46,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194604383] [2024-11-09 22:13:46,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:13:46,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:13:46,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:13:47,455 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-09 22:13:47,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:13:47,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194604383] [2024-11-09 22:13:47,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194604383] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:13:47,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707024059] [2024-11-09 22:13:47,457 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 22:13:47,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:13:47,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:13:47,459 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:13:47,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 22:13:47,610 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 22:13:47,610 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:13:47,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-09 22:13:47,620 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:13:47,633 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 40 treesize of output 39 [2024-11-09 22:13:48,192 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 22:13:48,193 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:13:49,224 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 22:13:49,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 180 treesize of output 174 [2024-11-09 22:13:49,935 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 21 proven. 11 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 22:13:49,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707024059] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:13:49,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:13:49,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 17] total 32 [2024-11-09 22:13:49,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47401982] [2024-11-09 22:13:49,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:13:49,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-09 22:13:49,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:13:49,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-09 22:13:49,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=792, Unknown=0, NotChecked=0, Total=992 [2024-11-09 22:13:49,938 INFO L87 Difference]: Start difference. First operand 364 states and 425 transitions. Second operand has 32 states, 32 states have (on average 3.40625) internal successors, (109), 32 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:13:57,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:13:57,792 INFO L93 Difference]: Finished difference Result 798 states and 973 transitions. [2024-11-09 22:13:57,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-11-09 22:13:57,793 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.40625) internal successors, (109), 32 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-09 22:13:57,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:13:57,796 INFO L225 Difference]: With dead ends: 798 [2024-11-09 22:13:57,796 INFO L226 Difference]: Without dead ends: 703 [2024-11-09 22:13:57,800 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2976 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=1992, Invalid=7908, Unknown=0, NotChecked=0, Total=9900 [2024-11-09 22:13:57,801 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 415 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:13:57,801 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 453 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 22:13:57,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2024-11-09 22:13:57,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 516. [2024-11-09 22:13:57,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 515 states have (on average 1.2019417475728156) internal successors, (619), 515 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:13:57,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 619 transitions. [2024-11-09 22:13:57,916 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 619 transitions. Word has length 56 [2024-11-09 22:13:57,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:13:57,917 INFO L471 AbstractCegarLoop]: Abstraction has 516 states and 619 transitions. [2024-11-09 22:13:57,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.40625) internal successors, (109), 32 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:13:57,917 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 619 transitions. [2024-11-09 22:13:57,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-09 22:13:57,918 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:13:57,918 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:13:57,936 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-09 22:13:58,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 22:13:58,119 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:13:58,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:13:58,119 INFO L85 PathProgramCache]: Analyzing trace with hash -395429557, now seen corresponding path program 2 times [2024-11-09 22:13:58,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:13:58,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413352597] [2024-11-09 22:13:58,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:13:58,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:13:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:13:58,848 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 33 proven. 4 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-09 22:13:58,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:13:58,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413352597] [2024-11-09 22:13:58,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413352597] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:13:58,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108608066] [2024-11-09 22:13:58,849 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 22:13:58,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:13:58,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:13:58,851 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:13:58,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 22:13:59,005 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 22:13:59,006 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:13:59,008 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-09 22:13:59,011 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:13:59,020 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 60 treesize of output 59 [2024-11-09 22:14:08,106 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 32 proven. 30 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-09 22:14:08,106 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:14:09,580 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 35 proven. 14 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-09 22:14:09,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108608066] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:14:09,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:14:09,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 15] total 39 [2024-11-09 22:14:09,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877442755] [2024-11-09 22:14:09,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:14:09,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-09 22:14:09,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:14:09,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-09 22:14:09,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=1213, Unknown=0, NotChecked=0, Total=1482 [2024-11-09 22:14:09,582 INFO L87 Difference]: Start difference. First operand 516 states and 619 transitions. Second operand has 39 states, 39 states have (on average 3.2564102564102564) internal successors, (127), 39 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:14:17,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:14:17,687 INFO L93 Difference]: Finished difference Result 908 states and 1095 transitions. [2024-11-09 22:14:17,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-09 22:14:17,688 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.2564102564102564) internal successors, (127), 39 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-09 22:14:17,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:14:17,691 INFO L225 Difference]: With dead ends: 908 [2024-11-09 22:14:17,691 INFO L226 Difference]: Without dead ends: 661 [2024-11-09 22:14:17,692 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 774 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=510, Invalid=2142, Unknown=0, NotChecked=0, Total=2652 [2024-11-09 22:14:17,692 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 261 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:14:17,693 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 581 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-09 22:14:17,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2024-11-09 22:14:17,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 444. [2024-11-09 22:14:17,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 443 states have (on average 1.2054176072234764) internal successors, (534), 443 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:14:17,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 534 transitions. [2024-11-09 22:14:17,800 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 534 transitions. Word has length 69 [2024-11-09 22:14:17,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:14:17,800 INFO L471 AbstractCegarLoop]: Abstraction has 444 states and 534 transitions. [2024-11-09 22:14:17,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.2564102564102564) internal successors, (127), 39 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:14:17,800 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 534 transitions. [2024-11-09 22:14:17,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-09 22:14:17,801 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:14:17,801 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:14:17,819 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-09 22:14:18,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:14:18,005 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:14:18,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:14:18,005 INFO L85 PathProgramCache]: Analyzing trace with hash 7969675, now seen corresponding path program 3 times [2024-11-09 22:14:18,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:14:18,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317740749] [2024-11-09 22:14:18,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:14:18,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:14:18,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:14:18,603 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-11-09 22:14:18,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:14:18,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317740749] [2024-11-09 22:14:18,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317740749] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:14:18,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103027880] [2024-11-09 22:14:18,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 22:14:18,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:14:18,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:14:18,606 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:14:18,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 22:14:18,798 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 22:14:18,799 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:14:18,800 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 22:14:18,802 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:14:18,808 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 60 treesize of output 59 [2024-11-09 22:14:19,656 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 48 treesize of output 35 [2024-11-09 22:14:19,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 1 [2024-11-09 22:14:22,368 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 125 treesize of output 103 [2024-11-09 22:14:23,119 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 73 treesize of output 65 [2024-11-09 22:14:23,189 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-09 22:14:23,189 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:14:24,270 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 40 treesize of output 36 [2024-11-09 22:14:24,280 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 22:14:24,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 75 [2024-11-09 22:14:24,318 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 22:14:24,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 291 treesize of output 235 [2024-11-09 22:14:24,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2024-11-09 22:14:24,445 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 18 proven. 33 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-09 22:14:24,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103027880] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:14:24,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:14:24,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 27 [2024-11-09 22:14:24,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946425266] [2024-11-09 22:14:24,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:14:24,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-09 22:14:24,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:14:24,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-09 22:14:24,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=593, Unknown=0, NotChecked=0, Total=702 [2024-11-09 22:14:24,447 INFO L87 Difference]: Start difference. First operand 444 states and 534 transitions. Second operand has 27 states, 27 states have (on average 4.703703703703703) internal successors, (127), 27 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:14:32,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:14:32,756 INFO L93 Difference]: Finished difference Result 1055 states and 1295 transitions. [2024-11-09 22:14:32,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 22:14:32,757 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.703703703703703) internal successors, (127), 27 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-09 22:14:32,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:14:32,761 INFO L225 Difference]: With dead ends: 1055 [2024-11-09 22:14:32,761 INFO L226 Difference]: Without dead ends: 1050 [2024-11-09 22:14:32,761 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=285, Invalid=1275, Unknown=0, NotChecked=0, Total=1560 [2024-11-09 22:14:32,762 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 280 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-09 22:14:32,762 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 725 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-09 22:14:32,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2024-11-09 22:14:32,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 456. [2024-11-09 22:14:32,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 455 states have (on average 1.2) internal successors, (546), 455 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:14:32,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 546 transitions. [2024-11-09 22:14:32,884 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 546 transitions. Word has length 71 [2024-11-09 22:14:32,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:14:32,885 INFO L471 AbstractCegarLoop]: Abstraction has 456 states and 546 transitions. [2024-11-09 22:14:32,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.703703703703703) internal successors, (127), 27 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:14:32,885 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 546 transitions. [2024-11-09 22:14:32,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-09 22:14:32,886 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:14:32,886 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:14:32,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-09 22:14:33,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 22:14:33,087 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:14:33,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:14:33,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1640574723, now seen corresponding path program 3 times [2024-11-09 22:14:33,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:14:33,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342676947] [2024-11-09 22:14:33,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:14:33,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:14:33,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:14:34,541 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 28 proven. 55 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-09 22:14:34,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:14:34,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342676947] [2024-11-09 22:14:34,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342676947] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:14:34,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453954050] [2024-11-09 22:14:34,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 22:14:34,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:14:34,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:14:34,543 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:14:34,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 22:14:34,721 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 22:14:34,721 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:14:34,722 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-09 22:14:34,724 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:14:34,760 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 48 treesize of output 35 [2024-11-09 22:14:34,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 1 [2024-11-09 22:14:35,145 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 20 treesize of output 12 [2024-11-09 22:14:35,148 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 16 treesize of output 8 [2024-11-09 22:14:35,159 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 28 proven. 51 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-09 22:14:35,159 INFO L311 TraceCheckSpWp]: Computing backward predicates...