./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/brs3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-fpi/brs3.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c10f08fb4b6a5b6f03e91e10a510f262e1b7fa98e124f4a160c252b3d63b04c2 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 18:22:13,207 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 18:22:13,267 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 18:22:13,274 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 18:22:13,275 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 18:22:13,299 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 18:22:13,301 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 18:22:13,302 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 18:22:13,302 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 18:22:13,303 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 18:22:13,304 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 18:22:13,304 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 18:22:13,304 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 18:22:13,306 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 18:22:13,306 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 18:22:13,307 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 18:22:13,307 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 18:22:13,307 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 18:22:13,307 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 18:22:13,308 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 18:22:13,308 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 18:22:13,311 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 18:22:13,311 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 18:22:13,312 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 18:22:13,312 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 18:22:13,312 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 18:22:13,312 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 18:22:13,313 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 18:22:13,313 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 18:22:13,313 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 18:22:13,313 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 18:22:13,313 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 18:22:13,314 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:22:13,314 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 18:22:13,314 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 18:22:13,314 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 18:22:13,314 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 18:22:13,315 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 18:22:13,315 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 18:22:13,315 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 18:22:13,315 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 18:22:13,316 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 18:22:13,316 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c10f08fb4b6a5b6f03e91e10a510f262e1b7fa98e124f4a160c252b3d63b04c2 [2024-11-09 18:22:13,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 18:22:13,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 18:22:13,585 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 18:22:13,586 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 18:22:13,586 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 18:22:13,587 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/brs3.c [2024-11-09 18:22:14,890 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 18:22:15,052 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 18:22:15,053 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/brs3.c [2024-11-09 18:22:15,067 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ec61b654/620c0e1fddad40228ea6ee9a8271ea03/FLAG09f5e6790 [2024-11-09 18:22:15,083 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ec61b654/620c0e1fddad40228ea6ee9a8271ea03 [2024-11-09 18:22:15,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 18:22:15,087 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 18:22:15,088 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 18:22:15,088 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 18:22:15,094 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 18:22:15,095 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:22:15" (1/1) ... [2024-11-09 18:22:15,096 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1524ba4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:22:15, skipping insertion in model container [2024-11-09 18:22:15,096 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:22:15" (1/1) ... [2024-11-09 18:22:15,114 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 18:22:15,296 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/brs3.c[587,600] [2024-11-09 18:22:15,315 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:22:15,321 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 18:22:15,331 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/brs3.c[587,600] [2024-11-09 18:22:15,338 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:22:15,351 INFO L204 MainTranslator]: Completed translation [2024-11-09 18:22:15,352 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:22:15 WrapperNode [2024-11-09 18:22:15,352 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 18:22:15,353 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 18:22:15,353 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 18:22:15,353 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 18:22:15,359 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:22:15" (1/1) ... [2024-11-09 18:22:15,365 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:22:15" (1/1) ... [2024-11-09 18:22:15,379 INFO L138 Inliner]: procedures = 17, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2024-11-09 18:22:15,379 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 18:22:15,380 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 18:22:15,380 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 18:22:15,380 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 18:22:15,390 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:22:15" (1/1) ... [2024-11-09 18:22:15,390 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:22:15" (1/1) ... [2024-11-09 18:22:15,392 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:22:15" (1/1) ... [2024-11-09 18:22:15,407 INFO L175 MemorySlicer]: Split 16 memory accesses to 4 slices as follows [2, 7, 3, 4]. 44 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 7, 0, 0]. The 4 writes are split as follows [0, 0, 2, 2]. [2024-11-09 18:22:15,407 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:22:15" (1/1) ... [2024-11-09 18:22:15,407 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:22:15" (1/1) ... [2024-11-09 18:22:15,411 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:22:15" (1/1) ... [2024-11-09 18:22:15,412 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:22:15" (1/1) ... [2024-11-09 18:22:15,413 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:22:15" (1/1) ... [2024-11-09 18:22:15,417 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:22:15" (1/1) ... [2024-11-09 18:22:15,419 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 18:22:15,420 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 18:22:15,420 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 18:22:15,420 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 18:22:15,420 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:22:15" (1/1) ... [2024-11-09 18:22:15,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:22:15,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:22:15,457 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 18:22:15,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 18:22:15,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 18:22:15,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 18:22:15,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 18:22:15,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 18:22:15,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 18:22:15,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 18:22:15,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 18:22:15,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 18:22:15,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 18:22:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 18:22:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 18:22:15,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 18:22:15,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 18:22:15,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 18:22:15,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 18:22:15,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 18:22:15,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-09 18:22:15,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 18:22:15,581 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 18:22:15,583 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 18:22:15,736 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L28: call ULTIMATE.dealloc(main_~#sum~0#1.base, main_~#sum~0#1.offset);havoc main_~#sum~0#1.base, main_~#sum~0#1.offset; [2024-11-09 18:22:15,745 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-09 18:22:15,745 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 18:22:15,756 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 18:22:15,756 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 18:22:15,757 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:22:15 BoogieIcfgContainer [2024-11-09 18:22:15,758 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 18:22:15,760 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 18:22:15,761 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 18:22:15,764 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 18:22:15,765 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:22:15" (1/3) ... [2024-11-09 18:22:15,766 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@136c541a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:22:15, skipping insertion in model container [2024-11-09 18:22:15,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:22:15" (2/3) ... [2024-11-09 18:22:15,766 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@136c541a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:22:15, skipping insertion in model container [2024-11-09 18:22:15,767 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:22:15" (3/3) ... [2024-11-09 18:22:15,769 INFO L112 eAbstractionObserver]: Analyzing ICFG brs3.c [2024-11-09 18:22:15,782 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 18:22:15,783 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 18:22:15,841 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 18:22:15,848 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;@414d9e7c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 18:22:15,848 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 18:22:15,853 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:15,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-09 18:22:15,859 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:22:15,859 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:22:15,860 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:22:15,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:22:15,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1176406123, now seen corresponding path program 1 times [2024-11-09 18:22:15,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:22:15,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279580585] [2024-11-09 18:22:15,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:22:15,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:22:15,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:22:16,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:22:16,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:22:16,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279580585] [2024-11-09 18:22:16,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279580585] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:22:16,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:22:16,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:22:16,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646523997] [2024-11-09 18:22:16,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:22:16,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 18:22:16,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:22:16,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 18:22:16,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 18:22:16,048 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 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) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:16,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:22:16,062 INFO L93 Difference]: Finished difference Result 43 states and 57 transitions. [2024-11-09 18:22:16,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 18:22:16,064 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2024-11-09 18:22:16,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:22:16,071 INFO L225 Difference]: With dead ends: 43 [2024-11-09 18:22:16,071 INFO L226 Difference]: Without dead ends: 19 [2024-11-09 18:22:16,075 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 18:22:16,078 INFO L432 NwaCegarLoop]: 27 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, 27 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:22:16,081 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:22:16,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-09 18:22:16,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-09 18:22:16,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:16,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2024-11-09 18:22:16,111 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 12 [2024-11-09 18:22:16,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:22:16,112 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2024-11-09 18:22:16,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:16,113 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2024-11-09 18:22:16,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 18:22:16,114 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:22:16,114 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:22:16,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 18:22:16,115 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:22:16,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:22:16,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1493164272, now seen corresponding path program 1 times [2024-11-09 18:22:16,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:22:16,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104238518] [2024-11-09 18:22:16,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:22:16,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:22:16,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:22:16,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:22:16,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:22:16,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104238518] [2024-11-09 18:22:16,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104238518] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:22:16,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:22:16,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 18:22:16,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803962686] [2024-11-09 18:22:16,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:22:16,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:22:16,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:22:16,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:22:16,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:22:16,331 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:16,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:22:16,414 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2024-11-09 18:22:16,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:22:16,415 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-09 18:22:16,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:22:16,415 INFO L225 Difference]: With dead ends: 41 [2024-11-09 18:22:16,415 INFO L226 Difference]: Without dead ends: 27 [2024-11-09 18:22:16,416 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:22:16,417 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 29 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:22:16,417 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 18 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:22:16,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-09 18:22:16,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2024-11-09 18:22:16,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:16,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2024-11-09 18:22:16,421 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 14 [2024-11-09 18:22:16,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:22:16,422 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2024-11-09 18:22:16,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:16,422 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2024-11-09 18:22:16,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-09 18:22:16,422 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:22:16,422 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:22:16,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 18:22:16,423 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:22:16,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:22:16,423 INFO L85 PathProgramCache]: Analyzing trace with hash -75358128, now seen corresponding path program 1 times [2024-11-09 18:22:16,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:22:16,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108022145] [2024-11-09 18:22:16,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:22:16,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:22:16,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:22:16,680 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:22:16,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:22:16,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108022145] [2024-11-09 18:22:16,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108022145] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:22:16,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:22:16,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 18:22:16,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907006941] [2024-11-09 18:22:16,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:22:16,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 18:22:16,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:22:16,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 18:22:16,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:22:16,683 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:16,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:22:16,721 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2024-11-09 18:22:16,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 18:22:16,721 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 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 22 [2024-11-09 18:22:16,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:22:16,722 INFO L225 Difference]: With dead ends: 34 [2024-11-09 18:22:16,722 INFO L226 Difference]: Without dead ends: 29 [2024-11-09 18:22:16,722 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-09 18:22:16,723 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 11 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:22:16,724 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 42 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:22:16,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-09 18:22:16,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2024-11-09 18:22:16,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:16,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2024-11-09 18:22:16,727 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 22 [2024-11-09 18:22:16,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:22:16,728 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2024-11-09 18:22:16,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:16,728 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2024-11-09 18:22:16,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-09 18:22:16,729 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:22:16,729 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:22:16,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 18:22:16,729 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:22:16,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:22:16,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1404754963, now seen corresponding path program 1 times [2024-11-09 18:22:16,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:22:16,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572602453] [2024-11-09 18:22:16,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:22:16,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:22:16,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:22:16,874 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:22:16,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:22:16,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572602453] [2024-11-09 18:22:16,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572602453] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:22:16,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656299853] [2024-11-09 18:22:16,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:22:16,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:22:16,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:22:16,878 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:22:16,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 18:22:16,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:22:16,958 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 18:22:16,963 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:22:17,055 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:22:17,055 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:22:17,129 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:22:17,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656299853] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:22:17,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:22:17,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-09 18:22:17,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14269074] [2024-11-09 18:22:17,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:22:17,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 18:22:17,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:22:17,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 18:22:17,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-09 18:22:17,134 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:17,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:22:17,237 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2024-11-09 18:22:17,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 18:22:17,238 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-09 18:22:17,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:22:17,239 INFO L225 Difference]: With dead ends: 55 [2024-11-09 18:22:17,239 INFO L226 Difference]: Without dead ends: 36 [2024-11-09 18:22:17,241 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-09 18:22:17,242 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 9 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:22:17,245 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 56 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:22:17,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-09 18:22:17,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2024-11-09 18:22:17,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:17,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2024-11-09 18:22:17,251 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 26 [2024-11-09 18:22:17,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:22:17,252 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2024-11-09 18:22:17,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:17,253 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2024-11-09 18:22:17,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-09 18:22:17,253 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:22:17,253 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:22:17,267 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 18:22:17,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:22:17,458 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:22:17,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:22:17,459 INFO L85 PathProgramCache]: Analyzing trace with hash 667119152, now seen corresponding path program 1 times [2024-11-09 18:22:17,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:22:17,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863059399] [2024-11-09 18:22:17,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:22:17,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:22:17,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:22:18,066 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:22:18,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:22:18,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863059399] [2024-11-09 18:22:18,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863059399] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:22:18,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162696571] [2024-11-09 18:22:18,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:22:18,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:22:18,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:22:18,072 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:22:18,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 18:22:18,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:22:18,133 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 18:22:18,138 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:22:18,206 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 11 treesize of output 7 [2024-11-09 18:22:18,259 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 11 treesize of output 7 [2024-11-09 18:22:18,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:22:18,386 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:22:18,386 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:22:18,500 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 18 [2024-11-09 18:22:18,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2024-11-09 18:22:18,555 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:22:18,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162696571] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:22:18,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:22:18,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 25 [2024-11-09 18:22:18,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604786471] [2024-11-09 18:22:18,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:22:18,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 18:22:18,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:22:18,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 18:22:18,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2024-11-09 18:22:18,558 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 25 states, 25 states have (on average 2.56) internal successors, (64), 25 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:18,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:22:18,804 INFO L93 Difference]: Finished difference Result 64 states and 75 transitions. [2024-11-09 18:22:18,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 18:22:18,805 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.56) internal successors, (64), 25 states have internal predecessors, (64), 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 30 [2024-11-09 18:22:18,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:22:18,805 INFO L225 Difference]: With dead ends: 64 [2024-11-09 18:22:18,805 INFO L226 Difference]: Without dead ends: 38 [2024-11-09 18:22:18,806 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=142, Invalid=670, Unknown=0, NotChecked=0, Total=812 [2024-11-09 18:22:18,807 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 23 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:22:18,807 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 132 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:22:18,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-09 18:22:18,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2024-11-09 18:22:18,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 35 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:18,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2024-11-09 18:22:18,813 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 30 [2024-11-09 18:22:18,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:22:18,813 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2024-11-09 18:22:18,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.56) internal successors, (64), 25 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:18,814 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2024-11-09 18:22:18,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-09 18:22:18,814 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:22:18,815 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:22:18,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 18:22:19,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:22:19,016 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:22:19,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:22:19,017 INFO L85 PathProgramCache]: Analyzing trace with hash 426541517, now seen corresponding path program 2 times [2024-11-09 18:22:19,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:22:19,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937551318] [2024-11-09 18:22:19,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:22:19,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:22:19,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:22:19,115 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:22:19,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:22:19,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937551318] [2024-11-09 18:22:19,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937551318] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:22:19,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29713945] [2024-11-09 18:22:19,116 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:22:19,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:22:19,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:22:19,118 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:22:19,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 18:22:19,177 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:22:19,177 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:22:19,179 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 18:22:19,181 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:22:19,254 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:22:19,255 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:22:19,319 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:22:19,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29713945] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:22:19,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:22:19,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-09 18:22:19,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691671186] [2024-11-09 18:22:19,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:22:19,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 18:22:19,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:22:19,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 18:22:19,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-09 18:22:19,323 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:19,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:22:19,421 INFO L93 Difference]: Finished difference Result 74 states and 83 transitions. [2024-11-09 18:22:19,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 18:22:19,422 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-11-09 18:22:19,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:22:19,423 INFO L225 Difference]: With dead ends: 74 [2024-11-09 18:22:19,423 INFO L226 Difference]: Without dead ends: 47 [2024-11-09 18:22:19,424 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 58 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-09 18:22:19,424 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 15 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:22:19,424 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 81 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:22:19,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-09 18:22:19,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2024-11-09 18:22:19,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 43 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:19,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2024-11-09 18:22:19,435 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 34 [2024-11-09 18:22:19,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:22:19,436 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2024-11-09 18:22:19,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:19,436 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2024-11-09 18:22:19,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-09 18:22:19,437 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:22:19,437 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:22:19,451 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 18:22:19,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:22:19,638 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:22:19,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:22:19,638 INFO L85 PathProgramCache]: Analyzing trace with hash -857089776, now seen corresponding path program 3 times [2024-11-09 18:22:19,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:22:19,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279605538] [2024-11-09 18:22:19,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:22:19,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:22:19,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:22:20,563 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:22:20,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:22:20,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279605538] [2024-11-09 18:22:20,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279605538] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:22:20,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330011454] [2024-11-09 18:22:20,564 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:22:20,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:22:20,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:22:20,566 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:22:20,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 18:22:20,634 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 18:22:20,634 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:22:20,636 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 18:22:20,643 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:22:20,658 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 11 [2024-11-09 18:22:20,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2024-11-09 18:22:20,889 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 11 treesize of output 7 [2024-11-09 18:22:20,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2024-11-09 18:22:21,144 INFO L349 Elim1Store]: treesize reduction 8, result has 79.5 percent of original size [2024-11-09 18:22:21,145 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 66 treesize of output 61 [2024-11-09 18:22:21,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 39 [2024-11-09 18:22:21,324 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 19 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 18:22:21,325 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:22:21,882 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 18:22:21,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330011454] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:22:21,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:22:21,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 50 [2024-11-09 18:22:21,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927058911] [2024-11-09 18:22:21,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:22:21,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-09 18:22:21,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:22:21,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-09 18:22:21,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=2124, Unknown=0, NotChecked=0, Total=2450 [2024-11-09 18:22:21,886 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand has 50 states, 50 states have (on average 1.88) internal successors, (94), 50 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) [2024-11-09 18:22:24,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:22:24,874 INFO L93 Difference]: Finished difference Result 145 states and 171 transitions. [2024-11-09 18:22:24,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-09 18:22:24,875 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.88) internal successors, (94), 50 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 38 [2024-11-09 18:22:24,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:22:24,879 INFO L225 Difference]: With dead ends: 145 [2024-11-09 18:22:24,879 INFO L226 Difference]: Without dead ends: 124 [2024-11-09 18:22:24,882 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3354 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1680, Invalid=9450, Unknown=0, NotChecked=0, Total=11130 [2024-11-09 18:22:24,883 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 380 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 18:22:24,883 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 298 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 18:22:24,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-09 18:22:24,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 63. [2024-11-09 18:22:24,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.1290322580645162) internal successors, (70), 62 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:24,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2024-11-09 18:22:24,898 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 38 [2024-11-09 18:22:24,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:22:24,898 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2024-11-09 18:22:24,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.88) internal successors, (94), 50 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) [2024-11-09 18:22:24,898 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2024-11-09 18:22:24,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-09 18:22:24,899 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:22:24,899 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:22:24,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 18:22:25,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:22:25,099 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:22:25,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:22:25,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1408633290, now seen corresponding path program 4 times [2024-11-09 18:22:25,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:22:25,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413836787] [2024-11-09 18:22:25,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:22:25,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:22:25,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:22:25,250 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 36 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:22:25,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:22:25,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413836787] [2024-11-09 18:22:25,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413836787] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:22:25,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365165260] [2024-11-09 18:22:25,251 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 18:22:25,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:22:25,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:22:25,253 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:22:25,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 18:22:25,319 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 18:22:25,319 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:22:25,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 18:22:25,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:22:25,813 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:22:25,813 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:22:26,082 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:22:26,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365165260] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:22:26,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:22:26,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 16] total 40 [2024-11-09 18:22:26,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644379671] [2024-11-09 18:22:26,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:22:26,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-09 18:22:26,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:22:26,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-09 18:22:26,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=1270, Unknown=0, NotChecked=0, Total=1560 [2024-11-09 18:22:26,084 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand has 40 states, 40 states have (on average 2.975) internal successors, (119), 40 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:27,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:22:27,519 INFO L93 Difference]: Finished difference Result 227 states and 252 transitions. [2024-11-09 18:22:27,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-11-09 18:22:27,519 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.975) internal successors, (119), 40 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-11-09 18:22:27,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:22:27,520 INFO L225 Difference]: With dead ends: 227 [2024-11-09 18:22:27,520 INFO L226 Difference]: Without dead ends: 169 [2024-11-09 18:22:27,523 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2995 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1706, Invalid=7996, Unknown=0, NotChecked=0, Total=9702 [2024-11-09 18:22:27,523 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 289 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 18:22:27,524 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 310 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 18:22:27,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-09 18:22:27,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 114. [2024-11-09 18:22:27,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.1150442477876106) internal successors, (126), 113 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:27,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 126 transitions. [2024-11-09 18:22:27,540 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 126 transitions. Word has length 46 [2024-11-09 18:22:27,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:22:27,540 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 126 transitions. [2024-11-09 18:22:27,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.975) internal successors, (119), 40 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:27,541 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 126 transitions. [2024-11-09 18:22:27,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-09 18:22:27,541 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:22:27,541 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:22:27,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 18:22:27,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:22:27,746 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:22:27,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:22:27,746 INFO L85 PathProgramCache]: Analyzing trace with hash -153128471, now seen corresponding path program 5 times [2024-11-09 18:22:27,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:22:27,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219970509] [2024-11-09 18:22:27,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:22:27,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:22:27,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:22:27,918 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 54 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:22:27,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:22:27,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219970509] [2024-11-09 18:22:27,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219970509] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:22:27,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223606136] [2024-11-09 18:22:27,919 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 18:22:27,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:22:27,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:22:27,920 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:22:27,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 18:22:28,018 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-09 18:22:28,018 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:22:28,019 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 18:22:28,025 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:22:28,147 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 72 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:22:28,147 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:22:28,236 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 58 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:22:28,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223606136] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:22:28,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:22:28,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 25 [2024-11-09 18:22:28,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240386460] [2024-11-09 18:22:28,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:22:28,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 18:22:28,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:22:28,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 18:22:28,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2024-11-09 18:22:28,238 INFO L87 Difference]: Start difference. First operand 114 states and 126 transitions. Second operand has 25 states, 25 states have (on average 4.0) internal successors, (100), 25 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) [2024-11-09 18:22:28,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:22:28,411 INFO L93 Difference]: Finished difference Result 233 states and 255 transitions. [2024-11-09 18:22:28,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-09 18:22:28,411 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.0) internal successors, (100), 25 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 54 [2024-11-09 18:22:28,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:22:28,412 INFO L225 Difference]: With dead ends: 233 [2024-11-09 18:22:28,412 INFO L226 Difference]: Without dead ends: 201 [2024-11-09 18:22:28,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 90 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=289, Invalid=901, Unknown=0, NotChecked=0, Total=1190 [2024-11-09 18:22:28,413 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 118 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:22:28,414 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 94 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:22:28,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-11-09 18:22:28,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 156. [2024-11-09 18:22:28,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 1.1161290322580646) internal successors, (173), 155 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:28,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 173 transitions. [2024-11-09 18:22:28,432 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 173 transitions. Word has length 54 [2024-11-09 18:22:28,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:22:28,433 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 173 transitions. [2024-11-09 18:22:28,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.0) internal successors, (100), 25 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) [2024-11-09 18:22:28,433 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 173 transitions. [2024-11-09 18:22:28,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-09 18:22:28,434 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:22:28,434 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:22:28,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 18:22:28,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:22:28,635 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:22:28,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:22:28,636 INFO L85 PathProgramCache]: Analyzing trace with hash 822035983, now seen corresponding path program 6 times [2024-11-09 18:22:28,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:22:28,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206739545] [2024-11-09 18:22:28,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:22:28,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:22:28,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:22:30,225 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:22:30,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:22:30,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206739545] [2024-11-09 18:22:30,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206739545] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:22:30,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593269768] [2024-11-09 18:22:30,226 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 18:22:30,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:22:30,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:22:30,227 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:22:30,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 18:22:30,315 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-09 18:22:30,315 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:22:30,316 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-09 18:22:30,324 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:22:30,404 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 11 treesize of output 7 [2024-11-09 18:22:30,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-09 18:22:30,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:22:30,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:22:30,554 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:22:30,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2024-11-09 18:22:30,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:22:30,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:22:30,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:22:30,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:22:30,666 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:22:30,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2024-11-09 18:22:30,883 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 11 treesize of output 7 [2024-11-09 18:22:31,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:22:31,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:22:31,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2024-11-09 18:22:31,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2024-11-09 18:22:31,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:22:31,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:22:31,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:22:31,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:22:31,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:22:31,391 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:22:31,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 60 treesize of output 84 [2024-11-09 18:22:31,655 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 3 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:22:31,655 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:22:32,766 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 70 [2024-11-09 18:22:32,776 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:22:32,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14814 treesize of output 14046 [2024-11-09 18:22:32,963 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:22:32,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593269768] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:22:32,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:22:32,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 27, 28] total 75 [2024-11-09 18:22:32,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123943805] [2024-11-09 18:22:32,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:22:32,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-11-09 18:22:32,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:22:32,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-11-09 18:22:32,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=729, Invalid=4821, Unknown=0, NotChecked=0, Total=5550 [2024-11-09 18:22:32,968 INFO L87 Difference]: Start difference. First operand 156 states and 173 transitions. Second operand has 75 states, 75 states have (on average 2.013333333333333) internal successors, (151), 75 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:37,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:22:37,139 INFO L93 Difference]: Finished difference Result 372 states and 407 transitions. [2024-11-09 18:22:37,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-09 18:22:37,140 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.013333333333333) internal successors, (151), 75 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-09 18:22:37,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:22:37,141 INFO L225 Difference]: With dead ends: 372 [2024-11-09 18:22:37,141 INFO L226 Difference]: Without dead ends: 202 [2024-11-09 18:22:37,144 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5485 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=2424, Invalid=15398, Unknown=0, NotChecked=0, Total=17822 [2024-11-09 18:22:37,145 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 401 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 1351 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 1523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 1351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 18:22:37,145 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 573 Invalid, 1523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 1351 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 18:22:37,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-09 18:22:37,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 133. [2024-11-09 18:22:37,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.106060606060606) internal successors, (146), 132 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:37,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 146 transitions. [2024-11-09 18:22:37,173 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 146 transitions. Word has length 54 [2024-11-09 18:22:37,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:22:37,173 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 146 transitions. [2024-11-09 18:22:37,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 2.013333333333333) internal successors, (151), 75 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:37,173 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 146 transitions. [2024-11-09 18:22:37,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-09 18:22:37,174 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:22:37,174 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:22:37,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 18:22:37,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:22:37,375 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:22:37,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:22:37,375 INFO L85 PathProgramCache]: Analyzing trace with hash 574052591, now seen corresponding path program 7 times [2024-11-09 18:22:37,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:22:37,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670092236] [2024-11-09 18:22:37,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:22:37,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:22:37,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:22:39,218 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 4 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:22:39,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:22:39,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670092236] [2024-11-09 18:22:39,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670092236] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:22:39,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619216618] [2024-11-09 18:22:39,218 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 18:22:39,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:22:39,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:22:39,220 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:22:39,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 18:22:39,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:22:39,280 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-09 18:22:39,285 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:22:39,301 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 11 treesize of output 7 [2024-11-09 18:22:39,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-09 18:22:39,343 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:22:39,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-09 18:22:39,393 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:22:39,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-09 18:22:39,500 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:22:39,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2024-11-09 18:22:39,616 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 11 treesize of output 7 [2024-11-09 18:22:39,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:22:39,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:22:39,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:22:40,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:22:40,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:22:40,188 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:22:40,188 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:22:41,226 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 237 treesize of output 227 [2024-11-09 18:22:41,564 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:22:41,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 9843013566454 treesize of output 9499416182774 [2024-11-09 18:22:43,076 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:22:43,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619216618] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:22:43,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:22:43,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 24, 27] total 67 [2024-11-09 18:22:43,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256068956] [2024-11-09 18:22:43,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:22:43,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-11-09 18:22:43,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:22:43,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-11-09 18:22:43,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=491, Invalid=3931, Unknown=0, NotChecked=0, Total=4422 [2024-11-09 18:22:43,079 INFO L87 Difference]: Start difference. First operand 133 states and 146 transitions. Second operand has 67 states, 67 states have (on average 2.343283582089552) internal successors, (157), 67 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:44,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:22:44,956 INFO L93 Difference]: Finished difference Result 275 states and 302 transitions. [2024-11-09 18:22:44,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-09 18:22:44,957 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.343283582089552) internal successors, (157), 67 states have internal predecessors, (157), 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 [2024-11-09 18:22:44,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:22:44,958 INFO L225 Difference]: With dead ends: 275 [2024-11-09 18:22:44,958 INFO L226 Difference]: Without dead ends: 167 [2024-11-09 18:22:44,960 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2238 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=736, Invalid=6236, Unknown=0, NotChecked=0, Total=6972 [2024-11-09 18:22:44,961 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 94 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 1503 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 1566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 18:22:44,961 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 652 Invalid, 1566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1503 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 18:22:44,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-09 18:22:44,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 130. [2024-11-09 18:22:44,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.0930232558139534) internal successors, (141), 129 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:44,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 141 transitions. [2024-11-09 18:22:44,978 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 141 transitions. Word has length 62 [2024-11-09 18:22:44,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:22:44,979 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 141 transitions. [2024-11-09 18:22:44,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 2.343283582089552) internal successors, (157), 67 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:44,979 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 141 transitions. [2024-11-09 18:22:44,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-09 18:22:44,980 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:22:44,980 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 6, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:22:44,993 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 18:22:45,180 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,SelfDestructingSolverStorable10 [2024-11-09 18:22:45,180 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:22:45,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:22:45,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1222340210, now seen corresponding path program 8 times [2024-11-09 18:22:45,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:22:45,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027623524] [2024-11-09 18:22:45,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:22:45,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:22:45,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:22:47,469 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 50 proven. 146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:22:47,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:22:47,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027623524] [2024-11-09 18:22:47,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027623524] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:22:47,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289206646] [2024-11-09 18:22:47,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:22:47,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:22:47,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:22:47,471 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:22:47,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 18:22:47,540 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:22:47,540 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:22:47,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-09 18:22:47,545 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:22:47,608 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 11 treesize of output 7 [2024-11-09 18:22:47,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-09 18:22:47,764 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:22:47,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-09 18:22:47,861 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:22:47,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-09 18:22:47,974 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:22:47,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2024-11-09 18:22:48,103 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:22:48,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 58 [2024-11-09 18:22:48,271 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 11 treesize of output 7 [2024-11-09 18:22:48,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:22:48,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:22:48,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:22:48,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:22:48,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:22:49,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 18:22:49,127 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:22:49,127 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:22:50,775 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 331 treesize of output 319 [2024-11-09 18:22:51,468 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:22:51,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 1247547970471854070 treesize of output 1220526372707631094 [2024-11-09 18:23:02,904 WARN L286 SmtUtils]: Spent 11.36s on a formula simplification. DAG size of input: 19769 DAG size of output: 98 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 18:23:03,136 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:23:03,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289206646] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:23:03,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:23:03,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 27, 31] total 83 [2024-11-09 18:23:03,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404050879] [2024-11-09 18:23:03,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:23:03,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2024-11-09 18:23:03,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:23:03,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2024-11-09 18:23:03,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=6174, Unknown=0, NotChecked=0, Total=6806 [2024-11-09 18:23:03,139 INFO L87 Difference]: Start difference. First operand 130 states and 141 transitions. Second operand has 83 states, 83 states have (on average 2.325301204819277) internal successors, (193), 83 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:23:07,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:23:07,378 INFO L93 Difference]: Finished difference Result 308 states and 334 transitions. [2024-11-09 18:23:07,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-09 18:23:07,378 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.325301204819277) internal successors, (193), 83 states have internal predecessors, (193), 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 70 [2024-11-09 18:23:07,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:23:07,379 INFO L225 Difference]: With dead ends: 308 [2024-11-09 18:23:07,379 INFO L226 Difference]: Without dead ends: 204 [2024-11-09 18:23:07,381 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3844 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=1468, Invalid=11188, Unknown=0, NotChecked=0, Total=12656 [2024-11-09 18:23:07,382 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 318 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 2020 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 2162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 2020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:23:07,382 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 806 Invalid, 2162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 2020 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 18:23:07,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2024-11-09 18:23:07,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 138. [2024-11-09 18:23:07,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 1.094890510948905) internal successors, (150), 137 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:23:07,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 150 transitions. [2024-11-09 18:23:07,404 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 150 transitions. Word has length 70 [2024-11-09 18:23:07,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:23:07,404 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 150 transitions. [2024-11-09 18:23:07,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 2.325301204819277) internal successors, (193), 83 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:23:07,405 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 150 transitions. [2024-11-09 18:23:07,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-09 18:23:07,405 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:23:07,405 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 8, 7, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:23:07,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 18:23:07,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:23:07,606 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:23:07,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:23:07,606 INFO L85 PathProgramCache]: Analyzing trace with hash -75667002, now seen corresponding path program 9 times [2024-11-09 18:23:07,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:23:07,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182166962] [2024-11-09 18:23:07,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:23:07,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:23:07,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:23:07,850 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 132 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:23:07,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:23:07,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182166962] [2024-11-09 18:23:07,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182166962] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:23:07,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668367906] [2024-11-09 18:23:07,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:23:07,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:23:07,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:23:07,853 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:23:07,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 18:23:07,971 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-09 18:23:07,971 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:23:07,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-09 18:23:07,974 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:23:08,341 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 86 proven. 127 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-09 18:23:08,341 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:23:08,565 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 213 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-09 18:23:08,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668367906] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:23:08,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:23:08,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 45 [2024-11-09 18:23:08,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650308212] [2024-11-09 18:23:08,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:23:08,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-09 18:23:08,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:23:08,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-09 18:23:08,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=1714, Unknown=0, NotChecked=0, Total=1980 [2024-11-09 18:23:08,567 INFO L87 Difference]: Start difference. First operand 138 states and 150 transitions. Second operand has 45 states, 45 states have (on average 3.466666666666667) internal successors, (156), 45 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:23:09,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:23:09,132 INFO L93 Difference]: Finished difference Result 201 states and 214 transitions. [2024-11-09 18:23:09,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-09 18:23:09,132 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.466666666666667) internal successors, (156), 45 states have internal predecessors, (156), 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 74 [2024-11-09 18:23:09,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:23:09,133 INFO L225 Difference]: With dead ends: 201 [2024-11-09 18:23:09,133 INFO L226 Difference]: Without dead ends: 145 [2024-11-09 18:23:09,134 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=534, Invalid=2772, Unknown=0, NotChecked=0, Total=3306 [2024-11-09 18:23:09,134 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 114 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 1036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 18:23:09,135 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 395 Invalid, 1036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 18:23:09,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-09 18:23:09,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 138. [2024-11-09 18:23:09,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 1.0875912408759123) internal successors, (149), 137 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:23:09,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 149 transitions. [2024-11-09 18:23:09,153 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 149 transitions. Word has length 74 [2024-11-09 18:23:09,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:23:09,154 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 149 transitions. [2024-11-09 18:23:09,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.466666666666667) internal successors, (156), 45 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:23:09,154 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 149 transitions. [2024-11-09 18:23:09,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-09 18:23:09,154 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:23:09,154 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 7, 7, 7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:23:09,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 18:23:09,355 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,SelfDestructingSolverStorable12 [2024-11-09 18:23:09,355 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:23:09,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:23:09,355 INFO L85 PathProgramCache]: Analyzing trace with hash 45139499, now seen corresponding path program 10 times [2024-11-09 18:23:09,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:23:09,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396103341] [2024-11-09 18:23:09,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:23:09,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:23:09,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:23:09,594 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 102 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:23:09,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:23:09,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396103341] [2024-11-09 18:23:09,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396103341] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:23:09,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669106158] [2024-11-09 18:23:09,595 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 18:23:09,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:23:09,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:23:09,596 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:23:09,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 18:23:09,660 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 18:23:09,661 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:23:09,663 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-09 18:23:09,666 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:23:09,669 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 11 [2024-11-09 18:23:09,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2024-11-09 18:23:09,740 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:23:09,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 40 treesize of output 42 [2024-11-09 18:23:09,797 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:23:09,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 52 treesize of output 57 [2024-11-09 18:23:09,871 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:23:09,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 64 treesize of output 72 [2024-11-09 18:23:09,961 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:23:09,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 76 treesize of output 87 [2024-11-09 18:23:10,119 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:23:10,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 88 treesize of output 102 [2024-11-09 18:23:10,415 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 11 treesize of output 7 [2024-11-09 18:23:10,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2024-11-09 18:23:10,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2024-11-09 18:23:10,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33 [2024-11-09 18:23:11,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 40 [2024-11-09 18:23:11,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 47 [2024-11-09 18:23:11,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 54 [2024-11-09 18:23:12,187 INFO L349 Elim1Store]: treesize reduction 168, result has 57.3 percent of original size [2024-11-09 18:23:12,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 157 treesize of output 276 [2024-11-09 18:23:12,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 204 treesize of output 145 [2024-11-09 18:23:12,553 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 34 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:23:12,554 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:23:14,624 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 20 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:23:14,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669106158] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:23:14,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:23:14,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 38, 38] total 90 [2024-11-09 18:23:14,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498225909] [2024-11-09 18:23:14,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:23:14,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2024-11-09 18:23:14,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:23:14,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2024-11-09 18:23:14,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=988, Invalid=7022, Unknown=0, NotChecked=0, Total=8010 [2024-11-09 18:23:14,627 INFO L87 Difference]: Start difference. First operand 138 states and 149 transitions. Second operand has 90 states, 90 states have (on average 2.2888888888888888) internal successors, (206), 90 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:23:30,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:23:30,973 INFO L93 Difference]: Finished difference Result 349 states and 382 transitions. [2024-11-09 18:23:30,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2024-11-09 18:23:30,973 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 2.2888888888888888) internal successors, (206), 90 states have internal predecessors, (206), 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 74 [2024-11-09 18:23:30,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:23:30,974 INFO L225 Difference]: With dead ends: 349 [2024-11-09 18:23:30,974 INFO L226 Difference]: Without dead ends: 305 [2024-11-09 18:23:30,977 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21992 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=6850, Invalid=56906, Unknown=0, NotChecked=0, Total=63756 [2024-11-09 18:23:30,978 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 550 mSDsluCounter, 1069 mSDsCounter, 0 mSdLazyCounter, 3018 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 3436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 3018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-09 18:23:30,978 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 1098 Invalid, 3436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 3018 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-09 18:23:30,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2024-11-09 18:23:31,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 173. [2024-11-09 18:23:31,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.1337209302325582) internal successors, (195), 172 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:23:31,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 195 transitions. [2024-11-09 18:23:31,018 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 195 transitions. Word has length 74 [2024-11-09 18:23:31,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:23:31,019 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 195 transitions. [2024-11-09 18:23:31,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 2.2888888888888888) internal successors, (206), 90 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:23:31,019 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 195 transitions. [2024-11-09 18:23:31,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-09 18:23:31,020 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:23:31,020 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 8, 8, 8, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:23:31,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-09 18:23:31,220 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,SelfDestructingSolverStorable13 [2024-11-09 18:23:31,221 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:23:31,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:23:31,221 INFO L85 PathProgramCache]: Analyzing trace with hash 585528331, now seen corresponding path program 11 times [2024-11-09 18:23:31,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:23:31,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443715874] [2024-11-09 18:23:31,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:23:31,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:23:31,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:23:31,522 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 132 proven. 158 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:23:31,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:23:31,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443715874] [2024-11-09 18:23:31,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443715874] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:23:31,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904013076] [2024-11-09 18:23:31,523 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 18:23:31,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:23:31,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:23:31,525 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:23:31,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 18:23:31,698 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-09 18:23:31,699 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:23:31,701 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-09 18:23:31,703 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:23:31,961 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 162 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:23:31,961 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:23:32,156 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 139 proven. 151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:23:32,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904013076] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:23:32,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:23:32,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 32 [2024-11-09 18:23:32,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381272975] [2024-11-09 18:23:32,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:23:32,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-09 18:23:32,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:23:32,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-09 18:23:32,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=747, Unknown=0, NotChecked=0, Total=992 [2024-11-09 18:23:32,158 INFO L87 Difference]: Start difference. First operand 173 states and 195 transitions. Second operand has 32 states, 32 states have (on average 3.875) internal successors, (124), 32 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:23:32,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:23:32,444 INFO L93 Difference]: Finished difference Result 278 states and 305 transitions. [2024-11-09 18:23:32,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 18:23:32,445 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.875) internal successors, (124), 32 states have internal predecessors, (124), 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 82 [2024-11-09 18:23:32,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:23:32,446 INFO L225 Difference]: With dead ends: 278 [2024-11-09 18:23:32,446 INFO L226 Difference]: Without dead ends: 234 [2024-11-09 18:23:32,446 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 136 SyntacticMatches, 17 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=393, Invalid=1167, Unknown=0, NotChecked=0, Total=1560 [2024-11-09 18:23:32,447 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 125 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:23:32,447 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 162 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:23:32,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2024-11-09 18:23:32,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 177. [2024-11-09 18:23:32,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 1.1363636363636365) internal successors, (200), 176 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:23:32,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 200 transitions. [2024-11-09 18:23:32,482 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 200 transitions. Word has length 82 [2024-11-09 18:23:32,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:23:32,482 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 200 transitions. [2024-11-09 18:23:32,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.875) internal successors, (124), 32 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:23:32,482 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 200 transitions. [2024-11-09 18:23:32,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-09 18:23:32,483 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:23:32,483 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 8, 6, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:23:32,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 18:23:32,683 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,SelfDestructingSolverStorable14 [2024-11-09 18:23:32,684 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:23:32,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:23:32,684 INFO L85 PathProgramCache]: Analyzing trace with hash -557716914, now seen corresponding path program 12 times [2024-11-09 18:23:32,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:23:32,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382925988] [2024-11-09 18:23:32,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:23:32,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:23:32,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:23:36,450 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 36 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:23:36,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:23:36,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382925988] [2024-11-09 18:23:36,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382925988] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:23:36,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723566488] [2024-11-09 18:23:36,450 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 18:23:36,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:23:36,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:23:36,451 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:23:36,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 18:23:36,806 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-11-09 18:23:36,806 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:23:36,809 INFO L255 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 87 conjuncts are in the unsatisfiable core [2024-11-09 18:23:36,812 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:23:36,829 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 11 treesize of output 7 [2024-11-09 18:23:36,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-09 18:23:36,877 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:23:36,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-09 18:23:36,978 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:23:36,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-09 18:23:37,095 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:23:37,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2024-11-09 18:23:37,220 INFO L349 Elim1Store]: treesize reduction 64, result has 44.8 percent of original size [2024-11-09 18:23:37,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 49 treesize of output 76 [2024-11-09 18:23:37,482 INFO L349 Elim1Store]: treesize reduction 116, result has 25.6 percent of original size [2024-11-09 18:23:37,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 76 treesize of output 94 [2024-11-09 18:23:37,869 INFO L349 Elim1Store]: treesize reduction 156, result has 20.4 percent of original size [2024-11-09 18:23:37,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 13 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 26 case distinctions, treesize of input 91 treesize of output 112 [2024-11-09 18:23:38,824 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 11 treesize of output 7 [2024-11-09 18:23:39,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-09 18:23:39,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-09 18:23:40,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2024-11-09 18:23:40,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2024-11-09 18:23:41,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2024-11-09 18:23:41,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2024-11-09 18:23:42,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 42 [2024-11-09 18:23:43,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 28 [2024-11-09 18:23:43,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:43,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:43,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:43,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:43,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:43,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:43,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:43,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:43,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:43,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:43,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:43,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:43,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:43,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:43,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:43,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:43,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:43,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:23:43,247 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:23:43,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 49 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 92 treesize of output 84 [2024-11-09 18:23:43,518 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:23:43,518 INFO L311 TraceCheckSpWp]: Computing backward predicates...