./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 3289d67d 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-3289d67-m [2024-11-16 06:42:10,928 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 06:42:11,011 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 06:42:11,017 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 06:42:11,019 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 06:42:11,043 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 06:42:11,043 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 06:42:11,044 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 06:42:11,044 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 06:42:11,049 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 06:42:11,050 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 06:42:11,050 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 06:42:11,051 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 06:42:11,052 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 06:42:11,053 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 06:42:11,053 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 06:42:11,053 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 06:42:11,053 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 06:42:11,054 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 06:42:11,055 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 06:42:11,056 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 06:42:11,056 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 06:42:11,056 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 06:42:11,057 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 06:42:11,057 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 06:42:11,057 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 06:42:11,058 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 06:42:11,058 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 06:42:11,058 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 06:42:11,058 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 06:42:11,059 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 06:42:11,059 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 06:42:11,059 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 06:42:11,059 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 06:42:11,060 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 06:42:11,060 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 06:42:11,060 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 06:42:11,061 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 06:42:11,061 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 06:42:11,062 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 06:42:11,062 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 06:42:11,062 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 06:42:11,062 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0004a4c1c8347096eaba7e87038be30bb20b14d3b5abd082e79b4b4e835a243e [2024-11-16 06:42:11,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 06:42:11,305 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 06:42:11,308 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 06:42:11,309 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 06:42:11,310 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 06:42:11,311 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/vogal-1.i [2024-11-16 06:42:12,768 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 06:42:12,943 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 06:42:12,943 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/vogal-1.i [2024-11-16 06:42:12,951 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/817d72664/11b8ddb8be06456f9553be3023d8688e/FLAGab02e2ccb [2024-11-16 06:42:12,965 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/817d72664/11b8ddb8be06456f9553be3023d8688e [2024-11-16 06:42:12,969 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 06:42:12,971 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 06:42:12,972 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 06:42:12,972 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 06:42:12,977 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 06:42:12,978 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 06:42:12" (1/1) ... [2024-11-16 06:42:12,979 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3244e8f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:42:12, skipping insertion in model container [2024-11-16 06:42:12,979 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 06:42:12" (1/1) ... [2024-11-16 06:42:13,002 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 06:42:13,195 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] [2024-11-16 06:42:13,236 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 06:42:13,250 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 06:42:13,262 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] [2024-11-16 06:42:13,280 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 06:42:13,301 INFO L204 MainTranslator]: Completed translation [2024-11-16 06:42:13,302 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:42:13 WrapperNode [2024-11-16 06:42:13,302 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 06:42:13,303 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 06:42:13,304 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 06:42:13,304 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 06:42:13,311 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:42:13" (1/1) ... [2024-11-16 06:42:13,323 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:42:13" (1/1) ... [2024-11-16 06:42:13,350 INFO L138 Inliner]: procedures = 18, calls = 34, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 124 [2024-11-16 06:42:13,350 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 06:42:13,351 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 06:42:13,352 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 06:42:13,353 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 06:42:13,363 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:42:13" (1/1) ... [2024-11-16 06:42:13,363 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:42:13" (1/1) ... [2024-11-16 06:42:13,365 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:42:13" (1/1) ... [2024-11-16 06:42:13,379 INFO L175 MemorySlicer]: Split 22 memory accesses to 3 slices as follows [2, 6, 14]. 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, 1, 12]. [2024-11-16 06:42:13,381 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:42:13" (1/1) ... [2024-11-16 06:42:13,381 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:42:13" (1/1) ... [2024-11-16 06:42:13,388 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:42:13" (1/1) ... [2024-11-16 06:42:13,388 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:42:13" (1/1) ... [2024-11-16 06:42:13,390 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:42:13" (1/1) ... [2024-11-16 06:42:13,391 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:42:13" (1/1) ... [2024-11-16 06:42:13,393 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 06:42:13,394 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 06:42:13,394 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 06:42:13,394 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 06:42:13,395 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:42:13" (1/1) ... [2024-11-16 06:42:13,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 06:42:13,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:42:13,436 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) [2024-11-16 06:42:13,439 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 [2024-11-16 06:42:13,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 06:42:13,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 06:42:13,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 06:42:13,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 06:42:13,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-16 06:42:13,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-16 06:42:13,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-16 06:42:13,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 06:42:13,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 06:42:13,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 06:42:13,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 06:42:13,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 06:42:13,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 06:42:13,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 06:42:13,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 06:42:13,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 06:42:13,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 06:42:13,594 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 06:42:13,597 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 06:42:13,807 INFO L1250 $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; [2024-11-16 06:42:13,818 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-16 06:42:13,818 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 06:42:13,838 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 06:42:13,838 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 06:42:13,839 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:42:13 BoogieIcfgContainer [2024-11-16 06:42:13,839 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 06:42:13,841 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 06:42:13,841 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 06:42:13,844 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 06:42:13,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 06:42:12" (1/3) ... [2024-11-16 06:42:13,845 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff9a468 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 06:42:13, skipping insertion in model container [2024-11-16 06:42:13,845 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:42:13" (2/3) ... [2024-11-16 06:42:13,846 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff9a468 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 06:42:13, skipping insertion in model container [2024-11-16 06:42:13,847 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:42:13" (3/3) ... [2024-11-16 06:42:13,848 INFO L112 eAbstractionObserver]: Analyzing ICFG vogal-1.i [2024-11-16 06:42:13,863 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 06:42:13,863 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 06:42:13,920 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 06:42:13,927 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;@a223bc2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 06:42:13,927 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 06:42:13,933 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) [2024-11-16 06:42:13,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-16 06:42:13,939 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:42:13,940 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:42:13,941 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:42:13,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:42:13,947 INFO L85 PathProgramCache]: Analyzing trace with hash -457967504, now seen corresponding path program 1 times [2024-11-16 06:42:13,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:42:13,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118462968] [2024-11-16 06:42:13,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:13,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:42:14,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:14,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:42:14,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:42:14,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118462968] [2024-11-16 06:42:14,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118462968] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:42:14,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:42:14,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 06:42:14,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509391387] [2024-11-16 06:42:14,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:42:14,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 06:42:14,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:42:14,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 06:42:14,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 06:42:14,200 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) [2024-11-16 06:42:14,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:42:14,214 INFO L93 Difference]: Finished difference Result 63 states and 91 transitions. [2024-11-16 06:42:14,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 06:42:14,217 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 [2024-11-16 06:42:14,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:42:14,222 INFO L225 Difference]: With dead ends: 63 [2024-11-16 06:42:14,223 INFO L226 Difference]: Without dead ends: 29 [2024-11-16 06:42:14,226 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 [2024-11-16 06:42:14,230 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 [2024-11-16 06:42:14,232 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] [2024-11-16 06:42:14,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-16 06:42:14,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-11-16 06:42:14,260 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) [2024-11-16 06:42:14,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2024-11-16 06:42:14,263 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 14 [2024-11-16 06:42:14,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:42:14,264 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2024-11-16 06:42:14,264 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) [2024-11-16 06:42:14,265 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2024-11-16 06:42:14,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-16 06:42:14,266 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:42:14,266 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:42:14,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 06:42:14,268 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:42:14,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:42:14,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1875363675, now seen corresponding path program 1 times [2024-11-16 06:42:14,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:42:14,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271572019] [2024-11-16 06:42:14,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:14,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:42:14,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:14,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:42:14,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:42:14,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271572019] [2024-11-16 06:42:14,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271572019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:42:14,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:42:14,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 06:42:14,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937491448] [2024-11-16 06:42:14,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:42:14,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 06:42:14,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:42:14,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 06:42:14,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 06:42:14,523 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) [2024-11-16 06:42:14,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:42:14,570 INFO L93 Difference]: Finished difference Result 75 states and 94 transitions. [2024-11-16 06:42:14,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 06:42:14,572 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 [2024-11-16 06:42:14,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:42:14,573 INFO L225 Difference]: With dead ends: 75 [2024-11-16 06:42:14,573 INFO L226 Difference]: Without dead ends: 50 [2024-11-16 06:42:14,573 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 [2024-11-16 06:42:14,574 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 [2024-11-16 06:42:14,575 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] [2024-11-16 06:42:14,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-16 06:42:14,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 31. [2024-11-16 06:42:14,582 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) [2024-11-16 06:42:14,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2024-11-16 06:42:14,583 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 18 [2024-11-16 06:42:14,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:42:14,583 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2024-11-16 06:42:14,583 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) [2024-11-16 06:42:14,583 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2024-11-16 06:42:14,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-16 06:42:14,585 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:42:14,585 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:42:14,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 06:42:14,586 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:42:14,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:42:14,587 INFO L85 PathProgramCache]: Analyzing trace with hash -903648668, now seen corresponding path program 1 times [2024-11-16 06:42:14,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:42:14,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395517307] [2024-11-16 06:42:14,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:14,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:42:14,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:14,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:42:14,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:42:14,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395517307] [2024-11-16 06:42:14,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395517307] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:42:14,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574377710] [2024-11-16 06:42:14,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:14,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:42:14,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:42:14,805 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) [2024-11-16 06:42:14,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 06:42:14,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:14,909 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-16 06:42:14,914 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:42:14,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 06:42:14,991 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 06:42:14,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574377710] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:42:14,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 06:42:14,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2024-11-16 06:42:14,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712382735] [2024-11-16 06:42:14,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:42:14,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 06:42:14,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:42:14,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 06:42:14,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-16 06:42:14,995 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) [2024-11-16 06:42:15,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:42:15,028 INFO L93 Difference]: Finished difference Result 59 states and 74 transitions. [2024-11-16 06:42:15,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 06:42:15,029 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 [2024-11-16 06:42:15,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:42:15,030 INFO L225 Difference]: With dead ends: 59 [2024-11-16 06:42:15,030 INFO L226 Difference]: Without dead ends: 54 [2024-11-16 06:42:15,031 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 [2024-11-16 06:42:15,032 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 [2024-11-16 06:42:15,032 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] [2024-11-16 06:42:15,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-16 06:42:15,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 46. [2024-11-16 06:42:15,038 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) [2024-11-16 06:42:15,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2024-11-16 06:42:15,039 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 58 transitions. Word has length 20 [2024-11-16 06:42:15,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:42:15,039 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 58 transitions. [2024-11-16 06:42:15,040 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) [2024-11-16 06:42:15,040 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 58 transitions. [2024-11-16 06:42:15,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-16 06:42:15,041 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:42:15,041 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] [2024-11-16 06:42:15,057 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 06:42:15,245 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 [2024-11-16 06:42:15,246 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:42:15,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:42:15,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1864446366, now seen corresponding path program 1 times [2024-11-16 06:42:15,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:42:15,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015640123] [2024-11-16 06:42:15,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:15,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:42:15,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:15,407 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:42:15,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:42:15,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015640123] [2024-11-16 06:42:15,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015640123] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:42:15,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430676525] [2024-11-16 06:42:15,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:15,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:42:15,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:42:15,413 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) [2024-11-16 06:42:15,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 06:42:15,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:15,522 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-16 06:42:15,526 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:42:15,615 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 06:42:15,616 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:42:15,800 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-16 06:42:15,801 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 [2024-11-16 06:42:15,825 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:42:15,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430676525] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 06:42:15,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 06:42:15,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 8] total 12 [2024-11-16 06:42:15,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072431912] [2024-11-16 06:42:15,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:42:15,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 06:42:15,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:42:15,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 06:42:15,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-16 06:42:15,832 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) [2024-11-16 06:42:16,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:42:16,014 INFO L93 Difference]: Finished difference Result 89 states and 113 transitions. [2024-11-16 06:42:16,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 06:42:16,014 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 [2024-11-16 06:42:16,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:42:16,015 INFO L225 Difference]: With dead ends: 89 [2024-11-16 06:42:16,015 INFO L226 Difference]: Without dead ends: 48 [2024-11-16 06:42:16,016 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 [2024-11-16 06:42:16,017 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 8 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2024-11-16 06:42:16,017 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] [2024-11-16 06:42:16,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-16 06:42:16,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-11-16 06:42:16,021 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) [2024-11-16 06:42:16,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 60 transitions. [2024-11-16 06:42:16,022 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 60 transitions. Word has length 29 [2024-11-16 06:42:16,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:42:16,023 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 60 transitions. [2024-11-16 06:42:16,023 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) [2024-11-16 06:42:16,023 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 60 transitions. [2024-11-16 06:42:16,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-16 06:42:16,024 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:42:16,024 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] [2024-11-16 06:42:16,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-16 06:42:16,224 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 [2024-11-16 06:42:16,225 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:42:16,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:42:16,225 INFO L85 PathProgramCache]: Analyzing trace with hash 43597891, now seen corresponding path program 1 times [2024-11-16 06:42:16,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:42:16,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18543046] [2024-11-16 06:42:16,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:16,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:42:16,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:16,444 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 06:42:16,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:42:16,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18543046] [2024-11-16 06:42:16,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18543046] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:42:16,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557557929] [2024-11-16 06:42:16,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:16,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:42:16,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:42:16,447 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) [2024-11-16 06:42:16,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 06:42:16,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:16,526 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-16 06:42:16,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:42:16,550 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 [2024-11-16 06:42:19,902 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 06:42:19,903 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:42:20,820 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 06:42:20,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557557929] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 06:42:20,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 06:42:20,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 10] total 20 [2024-11-16 06:42:20,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675958715] [2024-11-16 06:42:20,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:42:20,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 06:42:20,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:42:20,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 06:42:20,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2024-11-16 06:42:20,823 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) [2024-11-16 06:42:21,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:42:21,300 INFO L93 Difference]: Finished difference Result 98 states and 123 transitions. [2024-11-16 06:42:21,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 06:42:21,301 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 [2024-11-16 06:42:21,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:42:21,302 INFO L225 Difference]: With dead ends: 98 [2024-11-16 06:42:21,302 INFO L226 Difference]: Without dead ends: 86 [2024-11-16 06:42:21,303 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=130, Invalid=422, Unknown=0, NotChecked=0, Total=552 [2024-11-16 06:42:21,304 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 [2024-11-16 06:42:21,304 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] [2024-11-16 06:42:21,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-16 06:42:21,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 56. [2024-11-16 06:42:21,315 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) [2024-11-16 06:42:21,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 70 transitions. [2024-11-16 06:42:21,316 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 70 transitions. Word has length 31 [2024-11-16 06:42:21,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:42:21,316 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 70 transitions. [2024-11-16 06:42:21,316 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) [2024-11-16 06:42:21,317 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 70 transitions. [2024-11-16 06:42:21,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-16 06:42:21,317 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:42:21,318 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] [2024-11-16 06:42:21,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-16 06:42:21,521 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 [2024-11-16 06:42:21,522 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:42:21,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:42:21,522 INFO L85 PathProgramCache]: Analyzing trace with hash 396904780, now seen corresponding path program 1 times [2024-11-16 06:42:21,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:42:21,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920507184] [2024-11-16 06:42:21,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:21,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:42:21,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:21,614 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 06:42:21,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:42:21,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920507184] [2024-11-16 06:42:21,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920507184] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:42:21,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316615723] [2024-11-16 06:42:21,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:21,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:42:21,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:42:21,618 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) [2024-11-16 06:42:21,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 06:42:21,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:21,695 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-16 06:42:21,696 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:42:21,809 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 [2024-11-16 06:42:21,819 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:42:21,819 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:42:21,939 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-16 06:42:21,940 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 [2024-11-16 06:42:21,960 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 06:42:21,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316615723] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:42:21,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:42:21,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9, 7] total 15 [2024-11-16 06:42:21,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991417441] [2024-11-16 06:42:21,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:42:21,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-16 06:42:21,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:42:21,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-16 06:42:21,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-11-16 06:42:21,966 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) [2024-11-16 06:42:22,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:42:22,133 INFO L93 Difference]: Finished difference Result 165 states and 212 transitions. [2024-11-16 06:42:22,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 06:42:22,134 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 [2024-11-16 06:42:22,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:42:22,135 INFO L225 Difference]: With dead ends: 165 [2024-11-16 06:42:22,135 INFO L226 Difference]: Without dead ends: 115 [2024-11-16 06:42:22,136 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2024-11-16 06:42:22,136 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 [2024-11-16 06:42:22,138 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] [2024-11-16 06:42:22,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-16 06:42:22,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 60. [2024-11-16 06:42:22,145 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) [2024-11-16 06:42:22,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 74 transitions. [2024-11-16 06:42:22,146 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 74 transitions. Word has length 31 [2024-11-16 06:42:22,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:42:22,146 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 74 transitions. [2024-11-16 06:42:22,147 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) [2024-11-16 06:42:22,147 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 74 transitions. [2024-11-16 06:42:22,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-16 06:42:22,148 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:42:22,148 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] [2024-11-16 06:42:22,166 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 06:42:22,352 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 [2024-11-16 06:42:22,353 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:42:22,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:42:22,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1112911591, now seen corresponding path program 1 times [2024-11-16 06:42:22,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:42:22,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93776946] [2024-11-16 06:42:22,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:22,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:42:22,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:22,472 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 06:42:22,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:42:22,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93776946] [2024-11-16 06:42:22,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93776946] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:42:22,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107022337] [2024-11-16 06:42:22,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:22,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:42:22,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:42:22,475 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) [2024-11-16 06:42:22,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 06:42:22,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:22,569 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-16 06:42:22,571 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:42:22,588 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 [2024-11-16 06:42:23,504 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 94 treesize of output 72 [2024-11-16 06:42:23,510 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 25 treesize of output 13 [2024-11-16 06:42:23,540 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-16 06:42:23,541 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:42:24,199 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 33 treesize of output 21 [2024-11-16 06:42:24,343 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-16 06:42:24,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107022337] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:42:24,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:42:24,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 15, 15] total 31 [2024-11-16 06:42:24,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553024746] [2024-11-16 06:42:24,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:42:24,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-16 06:42:24,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:42:24,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-16 06:42:24,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=725, Unknown=0, NotChecked=0, Total=930 [2024-11-16 06:42:24,346 INFO L87 Difference]: Start difference. First operand 60 states and 74 transitions. Second operand has 31 states, 31 states have (on average 2.6774193548387095) internal successors, (83), 31 states have internal predecessors, (83), 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) [2024-11-16 06:42:25,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:42:25,512 INFO L93 Difference]: Finished difference Result 264 states and 337 transitions. [2024-11-16 06:42:25,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-16 06:42:25,515 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.6774193548387095) internal successors, (83), 31 states have internal predecessors, (83), 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 [2024-11-16 06:42:25,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:42:25,516 INFO L225 Difference]: With dead ends: 264 [2024-11-16 06:42:25,520 INFO L226 Difference]: Without dead ends: 212 [2024-11-16 06:42:25,521 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=424, Invalid=1382, Unknown=0, NotChecked=0, Total=1806 [2024-11-16 06:42:25,522 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 366 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 06:42:25,522 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 521 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 06:42:25,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-11-16 06:42:25,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 69. [2024-11-16 06:42:25,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.2205882352941178) internal successors, (83), 68 states have internal predecessors, (83), 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) [2024-11-16 06:42:25,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 83 transitions. [2024-11-16 06:42:25,539 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 83 transitions. Word has length 37 [2024-11-16 06:42:25,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:42:25,540 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 83 transitions. [2024-11-16 06:42:25,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.6774193548387095) internal successors, (83), 31 states have internal predecessors, (83), 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) [2024-11-16 06:42:25,540 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 83 transitions. [2024-11-16 06:42:25,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-16 06:42:25,541 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:42:25,541 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 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] [2024-11-16 06:42:25,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-16 06:42:25,745 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 [2024-11-16 06:42:25,746 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:42:25,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:42:25,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1413142582, now seen corresponding path program 1 times [2024-11-16 06:42:25,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:42:25,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203577971] [2024-11-16 06:42:25,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:25,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:42:25,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:25,891 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:42:25,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:42:25,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203577971] [2024-11-16 06:42:25,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203577971] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:42:25,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531903389] [2024-11-16 06:42:25,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:25,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:42:25,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:42:25,895 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) [2024-11-16 06:42:25,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 06:42:25,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:25,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 06:42:25,975 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:42:25,984 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 06:42:25,985 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 06:42:25,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531903389] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:42:25,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 06:42:25,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-16 06:42:25,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064728660] [2024-11-16 06:42:25,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:42:25,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 06:42:25,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:42:25,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 06:42:25,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-16 06:42:25,989 INFO L87 Difference]: Start difference. First operand 69 states and 83 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) [2024-11-16 06:42:26,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:42:26,015 INFO L93 Difference]: Finished difference Result 122 states and 154 transitions. [2024-11-16 06:42:26,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 06:42:26,016 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 40 [2024-11-16 06:42:26,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:42:26,017 INFO L225 Difference]: With dead ends: 122 [2024-11-16 06:42:26,017 INFO L226 Difference]: Without dead ends: 85 [2024-11-16 06:42:26,017 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-16 06:42:26,018 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 [2024-11-16 06:42:26,018 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] [2024-11-16 06:42:26,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-16 06:42:26,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 77. [2024-11-16 06:42:26,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.1973684210526316) internal successors, (91), 76 states have internal predecessors, (91), 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) [2024-11-16 06:42:26,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 91 transitions. [2024-11-16 06:42:26,046 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 91 transitions. Word has length 40 [2024-11-16 06:42:26,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:42:26,046 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 91 transitions. [2024-11-16 06:42:26,047 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) [2024-11-16 06:42:26,047 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 91 transitions. [2024-11-16 06:42:26,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-16 06:42:26,047 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:42:26,048 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] [2024-11-16 06:42:26,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-16 06:42:26,248 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 [2024-11-16 06:42:26,249 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:42:26,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:42:26,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1567046393, now seen corresponding path program 1 times [2024-11-16 06:42:26,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:42:26,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049484627] [2024-11-16 06:42:26,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:26,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:42:26,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:26,357 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-16 06:42:26,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:42:26,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049484627] [2024-11-16 06:42:26,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049484627] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:42:26,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477155817] [2024-11-16 06:42:26,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:26,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:42:26,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:42:26,360 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) [2024-11-16 06:42:26,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 06:42:26,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:26,438 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-16 06:42:26,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:42:26,614 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 [2024-11-16 06:42:26,616 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 [2024-11-16 06:42:26,623 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:42:26,623 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:42:26,809 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:42:26,810 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 [2024-11-16 06:42:26,820 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:42:26,820 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 53 treesize of output 42 [2024-11-16 06:42:26,880 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-16 06:42:26,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477155817] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:42:26,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:42:26,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 9] total 20 [2024-11-16 06:42:26,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745265845] [2024-11-16 06:42:26,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:42:26,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-16 06:42:26,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:42:26,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-16 06:42:26,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2024-11-16 06:42:26,882 INFO L87 Difference]: Start difference. First operand 77 states and 91 transitions. Second operand has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 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) [2024-11-16 06:42:27,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:42:27,361 INFO L93 Difference]: Finished difference Result 450 states and 552 transitions. [2024-11-16 06:42:27,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-16 06:42:27,362 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 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 [2024-11-16 06:42:27,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:42:27,365 INFO L225 Difference]: With dead ends: 450 [2024-11-16 06:42:27,365 INFO L226 Difference]: Without dead ends: 383 [2024-11-16 06:42:27,366 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=594, Unknown=0, NotChecked=0, Total=756 [2024-11-16 06:42:27,366 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 411 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 06:42:27,367 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 783 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 06:42:27,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2024-11-16 06:42:27,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 102. [2024-11-16 06:42:27,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.188118811881188) internal successors, (120), 101 states have internal predecessors, (120), 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) [2024-11-16 06:42:27,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 120 transitions. [2024-11-16 06:42:27,398 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 120 transitions. Word has length 44 [2024-11-16 06:42:27,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:42:27,398 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 120 transitions. [2024-11-16 06:42:27,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 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) [2024-11-16 06:42:27,399 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 120 transitions. [2024-11-16 06:42:27,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-16 06:42:27,404 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:42:27,404 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 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] [2024-11-16 06:42:27,423 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-16 06:42:27,604 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 [2024-11-16 06:42:27,605 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:42:27,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:42:27,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1257172297, now seen corresponding path program 1 times [2024-11-16 06:42:27,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:42:27,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848837705] [2024-11-16 06:42:27,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:27,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:42:27,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:27,774 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-16 06:42:27,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:42:27,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848837705] [2024-11-16 06:42:27,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848837705] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:42:27,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746388758] [2024-11-16 06:42:27,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:27,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:42:27,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:42:27,777 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) [2024-11-16 06:42:27,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 06:42:27,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:27,873 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-16 06:42:27,874 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:42:27,899 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 06:42:27,899 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:42:27,930 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-16 06:42:27,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746388758] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:42:27,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:42:27,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 4] total 11 [2024-11-16 06:42:27,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412828442] [2024-11-16 06:42:27,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:42:27,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 06:42:27,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:42:27,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 06:42:27,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-16 06:42:27,931 INFO L87 Difference]: Start difference. First operand 102 states and 120 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 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) [2024-11-16 06:42:28,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:42:28,324 INFO L93 Difference]: Finished difference Result 595 states and 777 transitions. [2024-11-16 06:42:28,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-16 06:42:28,325 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 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 46 [2024-11-16 06:42:28,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:42:28,327 INFO L225 Difference]: With dead ends: 595 [2024-11-16 06:42:28,327 INFO L226 Difference]: Without dead ends: 505 [2024-11-16 06:42:28,328 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2024-11-16 06:42:28,328 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 378 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 06:42:28,329 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 590 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 06:42:28,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2024-11-16 06:42:28,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 124. [2024-11-16 06:42:28,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.1951219512195121) internal successors, (147), 123 states have internal predecessors, (147), 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) [2024-11-16 06:42:28,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 147 transitions. [2024-11-16 06:42:28,371 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 147 transitions. Word has length 46 [2024-11-16 06:42:28,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:42:28,371 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 147 transitions. [2024-11-16 06:42:28,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 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) [2024-11-16 06:42:28,372 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 147 transitions. [2024-11-16 06:42:28,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-16 06:42:28,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:42:28,373 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:42:28,390 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-16 06:42:28,573 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 [2024-11-16 06:42:28,573 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:42:28,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:42:28,574 INFO L85 PathProgramCache]: Analyzing trace with hash -770378659, now seen corresponding path program 2 times [2024-11-16 06:42:28,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:42:28,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32612178] [2024-11-16 06:42:28,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:28,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:42:28,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:29,820 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 22 proven. 21 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-16 06:42:29,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:42:29,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32612178] [2024-11-16 06:42:29,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32612178] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:42:29,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143866292] [2024-11-16 06:42:29,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 06:42:29,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:42:29,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:42:29,823 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) [2024-11-16 06:42:29,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 06:42:29,975 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 06:42:29,976 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:42:29,978 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-16 06:42:29,981 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:42:29,992 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 [2024-11-16 06:42:31,329 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 101 treesize of output 79 [2024-11-16 06:42:31,337 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:42:31,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2024-11-16 06:42:31,367 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 18 proven. 49 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-16 06:42:31,367 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:42:32,912 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2024-11-16 06:42:32,913 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 201 treesize of output 121 [2024-11-16 06:42:33,082 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 47 proven. 20 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-16 06:42:33,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143866292] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:42:33,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:42:33,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 17, 18] total 38 [2024-11-16 06:42:33,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444245502] [2024-11-16 06:42:33,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:42:33,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-16 06:42:33,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:42:33,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-16 06:42:33,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=369, Invalid=1037, Unknown=0, NotChecked=0, Total=1406 [2024-11-16 06:42:33,085 INFO L87 Difference]: Start difference. First operand 124 states and 147 transitions. Second operand has 38 states, 38 states have (on average 3.1315789473684212) internal successors, (119), 38 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) [2024-11-16 06:42:36,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:42:36,627 INFO L93 Difference]: Finished difference Result 418 states and 539 transitions. [2024-11-16 06:42:36,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-16 06:42:36,627 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.1315789473684212) internal successors, (119), 38 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 [2024-11-16 06:42:36,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:42:36,629 INFO L225 Difference]: With dead ends: 418 [2024-11-16 06:42:36,629 INFO L226 Difference]: Without dead ends: 400 [2024-11-16 06:42:36,631 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2088 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1596, Invalid=5210, Unknown=0, NotChecked=0, Total=6806 [2024-11-16 06:42:36,632 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 701 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 06:42:36,632 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 603 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 06:42:36,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2024-11-16 06:42:36,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 192. [2024-11-16 06:42:36,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.225130890052356) internal successors, (234), 191 states have internal predecessors, (234), 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) [2024-11-16 06:42:36,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 234 transitions. [2024-11-16 06:42:36,669 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 234 transitions. Word has length 56 [2024-11-16 06:42:36,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:42:36,669 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 234 transitions. [2024-11-16 06:42:36,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.1315789473684212) internal successors, (119), 38 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) [2024-11-16 06:42:36,669 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 234 transitions. [2024-11-16 06:42:36,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-16 06:42:36,670 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:42:36,670 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:42:36,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-16 06:42:36,871 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 [2024-11-16 06:42:36,871 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:42:36,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:42:36,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1727637278, now seen corresponding path program 3 times [2024-11-16 06:42:36,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:42:36,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647312075] [2024-11-16 06:42:36,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:36,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:42:36,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:37,075 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-16 06:42:37,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:42:37,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647312075] [2024-11-16 06:42:37,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647312075] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:42:37,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925084271] [2024-11-16 06:42:37,075 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 06:42:37,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:42:37,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:42:37,079 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) [2024-11-16 06:42:37,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-16 06:42:37,211 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-16 06:42:37,211 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:42:37,212 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-16 06:42:37,214 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:42:37,230 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-16 06:42:37,230 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:42:37,281 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-16 06:42:37,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925084271] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:42:37,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:42:37,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2024-11-16 06:42:37,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324969465] [2024-11-16 06:42:37,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:42:37,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 06:42:37,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:42:37,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 06:42:37,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-11-16 06:42:37,283 INFO L87 Difference]: Start difference. First operand 192 states and 234 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 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) [2024-11-16 06:42:37,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:42:37,492 INFO L93 Difference]: Finished difference Result 467 states and 585 transitions. [2024-11-16 06:42:37,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 06:42:37,493 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 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 [2024-11-16 06:42:37,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:42:37,494 INFO L225 Difference]: With dead ends: 467 [2024-11-16 06:42:37,494 INFO L226 Difference]: Without dead ends: 396 [2024-11-16 06:42:37,495 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2024-11-16 06:42:37,495 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 133 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:42:37,495 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 160 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:42:37,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2024-11-16 06:42:37,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 201. [2024-11-16 06:42:37,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 1.23) internal successors, (246), 200 states have internal predecessors, (246), 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) [2024-11-16 06:42:37,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 246 transitions. [2024-11-16 06:42:37,538 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 246 transitions. Word has length 56 [2024-11-16 06:42:37,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:42:37,540 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 246 transitions. [2024-11-16 06:42:37,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 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) [2024-11-16 06:42:37,540 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 246 transitions. [2024-11-16 06:42:37,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-16 06:42:37,541 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:42:37,541 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] [2024-11-16 06:42:37,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-16 06:42:37,741 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 [2024-11-16 06:42:37,742 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:42:37,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:42:37,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1317350013, now seen corresponding path program 1 times [2024-11-16 06:42:37,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:42:37,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778626305] [2024-11-16 06:42:37,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:37,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:42:37,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:38,847 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-16 06:42:38,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:42:38,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778626305] [2024-11-16 06:42:38,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778626305] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:42:38,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727317296] [2024-11-16 06:42:38,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:38,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:42:38,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:42:38,850 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) [2024-11-16 06:42:38,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-16 06:42:38,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:38,962 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-16 06:42:38,964 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:42:39,482 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 [2024-11-16 06:42:39,483 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 [2024-11-16 06:42:39,502 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 23 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-16 06:42:39,502 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:42:39,922 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:42:39,923 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 53 treesize of output 42 [2024-11-16 06:42:39,932 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:42:39,933 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 28 treesize of output 24 [2024-11-16 06:42:40,107 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-16 06:42:40,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727317296] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:42:40,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:42:40,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 13] total 35 [2024-11-16 06:42:40,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215863177] [2024-11-16 06:42:40,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:42:40,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-16 06:42:40,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:42:40,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-16 06:42:40,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=938, Unknown=0, NotChecked=0, Total=1190 [2024-11-16 06:42:40,109 INFO L87 Difference]: Start difference. First operand 201 states and 246 transitions. Second operand has 35 states, 35 states have (on average 3.342857142857143) internal successors, (117), 35 states have internal predecessors, (117), 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) [2024-11-16 06:42:41,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:42:41,402 INFO L93 Difference]: Finished difference Result 587 states and 727 transitions. [2024-11-16 06:42:41,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-16 06:42:41,403 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.342857142857143) internal successors, (117), 35 states have internal predecessors, (117), 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 [2024-11-16 06:42:41,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:42:41,405 INFO L225 Difference]: With dead ends: 587 [2024-11-16 06:42:41,405 INFO L226 Difference]: Without dead ends: 493 [2024-11-16 06:42:41,407 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 954 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=841, Invalid=2465, Unknown=0, NotChecked=0, Total=3306 [2024-11-16 06:42:41,407 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 337 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 06:42:41,408 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 477 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 06:42:41,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2024-11-16 06:42:41,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 257. [2024-11-16 06:42:41,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 1.23046875) internal successors, (315), 256 states have internal predecessors, (315), 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) [2024-11-16 06:42:41,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 315 transitions. [2024-11-16 06:42:41,474 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 315 transitions. Word has length 56 [2024-11-16 06:42:41,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:42:41,474 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 315 transitions. [2024-11-16 06:42:41,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.342857142857143) internal successors, (117), 35 states have internal predecessors, (117), 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) [2024-11-16 06:42:41,474 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 315 transitions. [2024-11-16 06:42:41,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-16 06:42:41,475 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:42:41,475 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] [2024-11-16 06:42:41,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-16 06:42:41,679 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 [2024-11-16 06:42:41,680 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:42:41,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:42:41,680 INFO L85 PathProgramCache]: Analyzing trace with hash 355735996, now seen corresponding path program 1 times [2024-11-16 06:42:41,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:42:41,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923449018] [2024-11-16 06:42:41,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:41,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:42:41,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:42,007 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-16 06:42:42,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:42:42,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923449018] [2024-11-16 06:42:42,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923449018] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:42:42,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136071394] [2024-11-16 06:42:42,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:42,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:42:42,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:42:42,010 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) [2024-11-16 06:42:42,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-16 06:42:42,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:42,148 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-16 06:42:42,150 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:42:42,417 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-16 06:42:42,417 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:42:42,791 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-16 06:42:42,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136071394] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:42:42,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:42:42,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 14, 13] total 27 [2024-11-16 06:42:42,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723246498] [2024-11-16 06:42:42,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:42:42,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-16 06:42:42,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:42:42,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-16 06:42:42,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2024-11-16 06:42:42,793 INFO L87 Difference]: Start difference. First operand 257 states and 315 transitions. Second operand has 27 states, 27 states have (on average 3.925925925925926) internal successors, (106), 27 states have internal predecessors, (106), 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) [2024-11-16 06:42:43,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:42:43,893 INFO L93 Difference]: Finished difference Result 726 states and 905 transitions. [2024-11-16 06:42:43,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-16 06:42:43,893 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.925925925925926) internal successors, (106), 27 states have internal predecessors, (106), 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 [2024-11-16 06:42:43,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:42:43,896 INFO L225 Difference]: With dead ends: 726 [2024-11-16 06:42:43,896 INFO L226 Difference]: Without dead ends: 720 [2024-11-16 06:42:43,897 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1095 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=610, Invalid=3422, Unknown=0, NotChecked=0, Total=4032 [2024-11-16 06:42:43,898 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 436 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 06:42:43,898 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 733 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 06:42:43,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2024-11-16 06:42:43,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 395. [2024-11-16 06:42:43,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 1.236040609137056) internal successors, (487), 394 states have internal predecessors, (487), 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) [2024-11-16 06:42:43,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 487 transitions. [2024-11-16 06:42:43,994 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 487 transitions. Word has length 56 [2024-11-16 06:42:43,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:42:43,994 INFO L471 AbstractCegarLoop]: Abstraction has 395 states and 487 transitions. [2024-11-16 06:42:43,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.925925925925926) internal successors, (106), 27 states have internal predecessors, (106), 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) [2024-11-16 06:42:43,995 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 487 transitions. [2024-11-16 06:42:43,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-16 06:42:43,996 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:42:43,996 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] [2024-11-16 06:42:44,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-16 06:42:44,197 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 [2024-11-16 06:42:44,198 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:42:44,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:42:44,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1441215363, now seen corresponding path program 1 times [2024-11-16 06:42:44,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:42:44,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724130801] [2024-11-16 06:42:44,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:44,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:42:44,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:45,266 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-16 06:42:45,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:42:45,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724130801] [2024-11-16 06:42:45,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724130801] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:42:45,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749306192] [2024-11-16 06:42:45,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:45,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:42:45,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:42:45,269 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) [2024-11-16 06:42:45,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-16 06:42:45,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:45,378 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-16 06:42:45,380 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:42:45,712 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 [2024-11-16 06:42:45,714 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 [2024-11-16 06:42:45,726 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 23 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-16 06:42:45,726 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:42:46,036 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:42:46,037 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 68 treesize of output 56 [2024-11-16 06:42:46,300 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-16 06:42:46,301 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 [2024-11-16 06:42:46,323 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:42:46,324 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 [2024-11-16 06:42:46,411 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-16 06:42:46,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749306192] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:42:46,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:42:46,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 38 [2024-11-16 06:42:46,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832677316] [2024-11-16 06:42:46,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:42:46,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-16 06:42:46,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:42:46,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-16 06:42:46,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=1165, Unknown=0, NotChecked=0, Total=1406 [2024-11-16 06:42:46,413 INFO L87 Difference]: Start difference. First operand 395 states and 487 transitions. Second operand has 38 states, 38 states have (on average 3.0789473684210527) internal successors, (117), 38 states have internal predecessors, (117), 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) [2024-11-16 06:42:47,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:42:47,967 INFO L93 Difference]: Finished difference Result 751 states and 920 transitions. [2024-11-16 06:42:47,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-16 06:42:47,968 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.0789473684210527) internal successors, (117), 38 states have internal predecessors, (117), 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 [2024-11-16 06:42:47,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:42:47,969 INFO L225 Difference]: With dead ends: 751 [2024-11-16 06:42:47,969 INFO L226 Difference]: Without dead ends: 459 [2024-11-16 06:42:47,971 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1170 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=860, Invalid=3430, Unknown=0, NotChecked=0, Total=4290 [2024-11-16 06:42:47,971 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 326 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 06:42:47,972 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 543 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 06:42:47,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2024-11-16 06:42:48,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 330. [2024-11-16 06:42:48,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 1.1914893617021276) internal successors, (392), 329 states have internal predecessors, (392), 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) [2024-11-16 06:42:48,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 392 transitions. [2024-11-16 06:42:48,038 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 392 transitions. Word has length 56 [2024-11-16 06:42:48,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:42:48,039 INFO L471 AbstractCegarLoop]: Abstraction has 330 states and 392 transitions. [2024-11-16 06:42:48,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.0789473684210527) internal successors, (117), 38 states have internal predecessors, (117), 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) [2024-11-16 06:42:48,039 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 392 transitions. [2024-11-16 06:42:48,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-16 06:42:48,040 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:42:48,040 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] [2024-11-16 06:42:48,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-16 06:42:48,241 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 [2024-11-16 06:42:48,242 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:42:48,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:42:48,242 INFO L85 PathProgramCache]: Analyzing trace with hash -830401283, now seen corresponding path program 2 times [2024-11-16 06:42:48,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:42:48,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243969552] [2024-11-16 06:42:48,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:48,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:42:48,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:49,584 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-16 06:42:49,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:42:49,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243969552] [2024-11-16 06:42:49,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243969552] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:42:49,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121722831] [2024-11-16 06:42:49,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 06:42:49,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:42:49,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:42:49,586 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) [2024-11-16 06:42:49,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-16 06:42:49,707 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 06:42:49,707 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:42:49,709 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-16 06:42:49,711 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:42:50,036 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 [2024-11-16 06:42:50,038 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 [2024-11-16 06:42:50,051 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 20 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-16 06:42:50,051 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:42:50,448 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-16 06:42:50,448 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 66 treesize of output 50 [2024-11-16 06:42:50,527 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-16 06:42:50,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121722831] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:42:50,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:42:50,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 15] total 42 [2024-11-16 06:42:50,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909541100] [2024-11-16 06:42:50,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:42:50,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-16 06:42:50,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:42:50,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-16 06:42:50,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=1429, Unknown=0, NotChecked=0, Total=1722 [2024-11-16 06:42:50,530 INFO L87 Difference]: Start difference. First operand 330 states and 392 transitions. Second operand has 42 states, 42 states have (on average 2.642857142857143) internal successors, (111), 42 states have internal predecessors, (111), 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) [2024-11-16 06:42:52,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:42:52,048 INFO L93 Difference]: Finished difference Result 803 states and 970 transitions. [2024-11-16 06:42:52,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-16 06:42:52,050 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.642857142857143) internal successors, (111), 42 states have internal predecessors, (111), 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 [2024-11-16 06:42:52,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:42:52,052 INFO L225 Difference]: With dead ends: 803 [2024-11-16 06:42:52,052 INFO L226 Difference]: Without dead ends: 626 [2024-11-16 06:42:52,054 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1612 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1004, Invalid=4398, Unknown=0, NotChecked=0, Total=5402 [2024-11-16 06:42:52,055 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 429 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 06:42:52,056 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 816 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 06:42:52,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2024-11-16 06:42:52,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 327. [2024-11-16 06:42:52,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 326 states have (on average 1.1840490797546013) internal successors, (386), 326 states have internal predecessors, (386), 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) [2024-11-16 06:42:52,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 386 transitions. [2024-11-16 06:42:52,127 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 386 transitions. Word has length 56 [2024-11-16 06:42:52,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:42:52,127 INFO L471 AbstractCegarLoop]: Abstraction has 327 states and 386 transitions. [2024-11-16 06:42:52,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.642857142857143) internal successors, (111), 42 states have internal predecessors, (111), 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) [2024-11-16 06:42:52,127 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 386 transitions. [2024-11-16 06:42:52,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-16 06:42:52,128 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:42:52,128 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:42:52,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-16 06:42:52,328 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 [2024-11-16 06:42:52,329 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:42:52,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:42:52,329 INFO L85 PathProgramCache]: Analyzing trace with hash -64051109, now seen corresponding path program 4 times [2024-11-16 06:42:52,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:42:52,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573906178] [2024-11-16 06:42:52,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:52,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:42:52,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:52,557 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-16 06:42:52,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:42:52,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573906178] [2024-11-16 06:42:52,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573906178] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:42:52,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694999859] [2024-11-16 06:42:52,558 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 06:42:52,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:42:52,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:42:52,560 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) [2024-11-16 06:42:52,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-16 06:42:52,685 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 06:42:52,686 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:42:52,688 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-11-16 06:42:52,690 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:42:52,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-16 06:42:52,973 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-16 06:42:52,974 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:42:53,747 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 18 treesize of output 14 [2024-11-16 06:42:53,754 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 15 [2024-11-16 06:42:54,231 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 8 proven. 42 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-16 06:42:54,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694999859] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:42:54,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:42:54,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 16, 18] total 39 [2024-11-16 06:42:54,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367916310] [2024-11-16 06:42:54,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:42:54,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-16 06:42:54,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:42:54,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-16 06:42:54,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1342, Unknown=0, NotChecked=0, Total=1482 [2024-11-16 06:42:54,234 INFO L87 Difference]: Start difference. First operand 327 states and 386 transitions. Second operand has 39 states, 39 states have (on average 2.5641025641025643) internal successors, (100), 39 states have internal predecessors, (100), 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) [2024-11-16 06:42:59,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:42:59,057 INFO L93 Difference]: Finished difference Result 3041 states and 3809 transitions. [2024-11-16 06:42:59,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-11-16 06:42:59,058 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.5641025641025643) internal successors, (100), 39 states have internal predecessors, (100), 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 62 [2024-11-16 06:42:59,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:42:59,067 INFO L225 Difference]: With dead ends: 3041 [2024-11-16 06:42:59,068 INFO L226 Difference]: Without dead ends: 2758 [2024-11-16 06:42:59,072 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3224 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1176, Invalid=10814, Unknown=0, NotChecked=0, Total=11990 [2024-11-16 06:42:59,073 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 1809 mSDsluCounter, 3559 mSDsCounter, 0 mSdLazyCounter, 3345 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1809 SdHoareTripleChecker+Valid, 3721 SdHoareTripleChecker+Invalid, 3444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 3345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-16 06:42:59,073 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1809 Valid, 3721 Invalid, 3444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 3345 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-16 06:42:59,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2758 states. [2024-11-16 06:42:59,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2758 to 905. [2024-11-16 06:42:59,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 904 states have (on average 1.1880530973451326) internal successors, (1074), 904 states have internal predecessors, (1074), 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) [2024-11-16 06:42:59,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1074 transitions. [2024-11-16 06:42:59,339 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1074 transitions. Word has length 62 [2024-11-16 06:42:59,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:42:59,340 INFO L471 AbstractCegarLoop]: Abstraction has 905 states and 1074 transitions. [2024-11-16 06:42:59,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.5641025641025643) internal successors, (100), 39 states have internal predecessors, (100), 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) [2024-11-16 06:42:59,340 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1074 transitions. [2024-11-16 06:42:59,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-16 06:42:59,342 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:42:59,342 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:42:59,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-16 06:42:59,543 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 [2024-11-16 06:42:59,543 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:42:59,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:42:59,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1547626649, now seen corresponding path program 5 times [2024-11-16 06:42:59,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:42:59,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443582513] [2024-11-16 06:42:59,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:59,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:42:59,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:59,858 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-16 06:42:59,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:42:59,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443582513] [2024-11-16 06:42:59,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443582513] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:42:59,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375803364] [2024-11-16 06:42:59,858 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 06:42:59,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:42:59,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:42:59,861 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) [2024-11-16 06:42:59,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-16 06:43:00,585 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-16 06:43:00,585 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:43:00,587 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-16 06:43:00,588 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:43:00,915 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 [2024-11-16 06:43:00,929 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-16 06:43:00,929 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:43:01,289 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-16 06:43:01,289 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 49 treesize of output 31 [2024-11-16 06:43:01,355 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 4 proven. 59 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-16 06:43:01,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375803364] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:43:01,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:43:01,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17, 11] total 34 [2024-11-16 06:43:01,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067906716] [2024-11-16 06:43:01,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:43:01,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-16 06:43:01,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:43:01,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-16 06:43:01,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1002, Unknown=0, NotChecked=0, Total=1122 [2024-11-16 06:43:01,357 INFO L87 Difference]: Start difference. First operand 905 states and 1074 transitions. Second operand has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 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) [2024-11-16 06:43:03,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:43:03,252 INFO L93 Difference]: Finished difference Result 2622 states and 3190 transitions. [2024-11-16 06:43:03,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-16 06:43:03,252 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 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 66 [2024-11-16 06:43:03,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:43:03,258 INFO L225 Difference]: With dead ends: 2622 [2024-11-16 06:43:03,258 INFO L226 Difference]: Without dead ends: 2419 [2024-11-16 06:43:03,260 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1118 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=528, Invalid=4442, Unknown=0, NotChecked=0, Total=4970 [2024-11-16 06:43:03,261 INFO L432 NwaCegarLoop]: 177 mSDtfsCounter, 1200 mSDsluCounter, 2943 mSDsCounter, 0 mSdLazyCounter, 2091 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1200 SdHoareTripleChecker+Valid, 3120 SdHoareTripleChecker+Invalid, 2158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 2091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 06:43:03,261 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1200 Valid, 3120 Invalid, 2158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 2091 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 06:43:03,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2419 states. [2024-11-16 06:43:03,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2419 to 1193. [2024-11-16 06:43:03,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1193 states, 1192 states have (on average 1.1786912751677852) internal successors, (1405), 1192 states have internal predecessors, (1405), 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) [2024-11-16 06:43:03,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 1405 transitions. [2024-11-16 06:43:03,610 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 1405 transitions. Word has length 66 [2024-11-16 06:43:03,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:43:03,611 INFO L471 AbstractCegarLoop]: Abstraction has 1193 states and 1405 transitions. [2024-11-16 06:43:03,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 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) [2024-11-16 06:43:03,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 1405 transitions. [2024-11-16 06:43:03,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-16 06:43:03,613 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:43:03,613 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] [2024-11-16 06:43:03,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-16 06:43:03,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-16 06:43:03,814 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:43:03,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:43:03,815 INFO L85 PathProgramCache]: Analyzing trace with hash -395429557, now seen corresponding path program 2 times [2024-11-16 06:43:03,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:43:03,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522552782] [2024-11-16 06:43:03,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:43:03,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:43:03,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:43:04,444 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 33 proven. 4 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-16 06:43:04,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:43:04,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522552782] [2024-11-16 06:43:04,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522552782] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:43:04,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064670402] [2024-11-16 06:43:04,445 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 06:43:04,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:43:04,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:43:04,446 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:43:04,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-16 06:43:04,580 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 06:43:04,580 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:43:04,582 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-16 06:43:04,584 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:43:04,593 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 [2024-11-16 06:43:05,874 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 32 proven. 30 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-16 06:43:05,875 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:43:06,361 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 28 proven. 24 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-16 06:43:06,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064670402] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:43:06,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:43:06,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 15] total 39 [2024-11-16 06:43:06,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603797608] [2024-11-16 06:43:06,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:43:06,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-16 06:43:06,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:43:06,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-16 06:43:06,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=1212, Unknown=0, NotChecked=0, Total=1482 [2024-11-16 06:43:06,363 INFO L87 Difference]: Start difference. First operand 1193 states and 1405 transitions. Second operand has 39 states, 39 states have (on average 3.3333333333333335) internal successors, (130), 39 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) [2024-11-16 06:43:07,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:43:07,635 INFO L93 Difference]: Finished difference Result 1655 states and 1957 transitions. [2024-11-16 06:43:07,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-16 06:43:07,636 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.3333333333333335) internal successors, (130), 39 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) Word has length 69 [2024-11-16 06:43:07,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:43:07,639 INFO L225 Difference]: With dead ends: 1655 [2024-11-16 06:43:07,639 INFO L226 Difference]: Without dead ends: 1444 [2024-11-16 06:43:07,640 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 781 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=513, Invalid=2139, Unknown=0, NotChecked=0, Total=2652 [2024-11-16 06:43:07,640 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 209 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 06:43:07,641 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 550 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 06:43:07,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2024-11-16 06:43:08,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 1170. [2024-11-16 06:43:08,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1170 states, 1169 states have (on average 1.1796407185628743) internal successors, (1379), 1169 states have internal predecessors, (1379), 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) [2024-11-16 06:43:08,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 1379 transitions. [2024-11-16 06:43:08,034 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 1379 transitions. Word has length 69 [2024-11-16 06:43:08,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:43:08,035 INFO L471 AbstractCegarLoop]: Abstraction has 1170 states and 1379 transitions. [2024-11-16 06:43:08,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.3333333333333335) internal successors, (130), 39 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) [2024-11-16 06:43:08,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 1379 transitions. [2024-11-16 06:43:08,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-16 06:43:08,037 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:43:08,037 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] [2024-11-16 06:43:08,054 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-16 06:43:08,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:43:08,238 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:43:08,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:43:08,238 INFO L85 PathProgramCache]: Analyzing trace with hash 7969675, now seen corresponding path program 3 times [2024-11-16 06:43:08,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:43:08,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824413305] [2024-11-16 06:43:08,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:43:08,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:43:08,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:43:08,824 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-11-16 06:43:08,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:43:08,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824413305] [2024-11-16 06:43:08,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824413305] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:43:08,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157164918] [2024-11-16 06:43:08,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 06:43:08,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:43:08,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:43:08,826 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:43:08,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-16 06:43:08,988 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-16 06:43:08,988 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:43:08,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-16 06:43:08,991 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:43:08,999 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 [2024-11-16 06:43:11,861 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 120 treesize of output 100 [2024-11-16 06:43:13,192 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 74 treesize of output 66 [2024-11-16 06:43:13,302 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-16 06:43:13,303 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:43:13,769 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:43:13,770 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 33 [2024-11-16 06:43:14,855 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-16 06:43:14,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157164918] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:43:14,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:43:14,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 30 [2024-11-16 06:43:14,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948393305] [2024-11-16 06:43:14,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:43:14,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-16 06:43:14,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:43:14,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-16 06:43:14,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=752, Unknown=0, NotChecked=0, Total=870 [2024-11-16 06:43:14,857 INFO L87 Difference]: Start difference. First operand 1170 states and 1379 transitions. Second operand has 30 states, 30 states have (on average 4.166666666666667) internal successors, (125), 30 states have internal predecessors, (125), 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)