./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-cav19/array_tiling_tcpy.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-cav19/array_tiling_tcpy.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 5446997f7b2d7b76d63a39784df785fb06bbab562e365ba547eeee8a855e283e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 18:21:01,423 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 18:21:01,504 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 18:21:01,511 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 18:21:01,512 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 18:21:01,540 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 18:21:01,541 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 18:21:01,542 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 18:21:01,543 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 18:21:01,544 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 18:21:01,545 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 18:21:01,546 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 18:21:01,546 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 18:21:01,548 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 18:21:01,549 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 18:21:01,549 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 18:21:01,549 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 18:21:01,550 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 18:21:01,550 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 18:21:01,550 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 18:21:01,551 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 18:21:01,555 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 18:21:01,555 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 18:21:01,555 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 18:21:01,555 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 18:21:01,556 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 18:21:01,556 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 18:21:01,556 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 18:21:01,556 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 18:21:01,557 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 18:21:01,566 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 18:21:01,566 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 18:21:01,566 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:21:01,567 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 18:21:01,567 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 18:21:01,567 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 18:21:01,567 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 18:21:01,567 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 18:21:01,567 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 18:21:01,568 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 18:21:01,568 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 18:21:01,569 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 18:21:01,569 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5446997f7b2d7b76d63a39784df785fb06bbab562e365ba547eeee8a855e283e [2024-11-09 18:21:01,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 18:21:01,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 18:21:01,869 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 18:21:01,871 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 18:21:01,871 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 18:21:01,872 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-cav19/array_tiling_tcpy.c [2024-11-09 18:21:03,417 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 18:21:03,629 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 18:21:03,630 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-cav19/array_tiling_tcpy.c [2024-11-09 18:21:03,636 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1e4dfca4/b082bf6e0ce34b4d88ca83964c79b07f/FLAGcb6e6815a [2024-11-09 18:21:03,650 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1e4dfca4/b082bf6e0ce34b4d88ca83964c79b07f [2024-11-09 18:21:03,653 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 18:21:03,654 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 18:21:03,656 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 18:21:03,656 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 18:21:03,661 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 18:21:03,662 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:21:03" (1/1) ... [2024-11-09 18:21:03,663 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@202e33e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:21:03, skipping insertion in model container [2024-11-09 18:21:03,663 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:21:03" (1/1) ... [2024-11-09 18:21:03,681 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 18:21:03,862 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-cav19/array_tiling_tcpy.c[408,421] [2024-11-09 18:21:03,890 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:21:03,900 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 18:21:03,913 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-cav19/array_tiling_tcpy.c[408,421] [2024-11-09 18:21:03,922 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:21:03,944 INFO L204 MainTranslator]: Completed translation [2024-11-09 18:21:03,944 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:21:03 WrapperNode [2024-11-09 18:21:03,945 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 18:21:03,946 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 18:21:03,947 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 18:21:03,947 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 18:21:03,954 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:21:03" (1/1) ... [2024-11-09 18:21:03,963 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:21:03" (1/1) ... [2024-11-09 18:21:03,982 INFO L138 Inliner]: procedures = 15, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56 [2024-11-09 18:21:03,982 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 18:21:03,983 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 18:21:03,983 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 18:21:03,983 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 18:21:03,994 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:21:03" (1/1) ... [2024-11-09 18:21:03,995 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:21:03" (1/1) ... [2024-11-09 18:21:04,000 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:21:03" (1/1) ... [2024-11-09 18:21:04,023 INFO L175 MemorySlicer]: Split 8 memory accesses to 3 slices as follows [2, 3, 3]. 38 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 2, 0]. [2024-11-09 18:21:04,023 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:21:03" (1/1) ... [2024-11-09 18:21:04,024 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:21:03" (1/1) ... [2024-11-09 18:21:04,029 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:21:03" (1/1) ... [2024-11-09 18:21:04,035 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:21:03" (1/1) ... [2024-11-09 18:21:04,037 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:21:03" (1/1) ... [2024-11-09 18:21:04,037 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:21:03" (1/1) ... [2024-11-09 18:21:04,042 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 18:21:04,043 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 18:21:04,044 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 18:21:04,044 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 18:21:04,045 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:21:03" (1/1) ... [2024-11-09 18:21:04,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:21:04,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:21:04,079 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 18:21:04,085 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 18:21:04,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 18:21:04,126 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 18:21:04,126 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 18:21:04,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 18:21:04,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 18:21:04,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 18:21:04,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 18:21:04,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 18:21:04,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 18:21:04,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 18:21:04,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 18:21:04,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 18:21:04,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 18:21:04,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 18:21:04,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 18:21:04,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 18:21:04,200 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 18:21:04,202 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 18:21:04,351 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L16: call ULTIMATE.dealloc(main_~#a~0#1.base, main_~#a~0#1.offset);havoc main_~#a~0#1.base, main_~#a~0#1.offset;call ULTIMATE.dealloc(main_~#acopy~0#1.base, main_~#acopy~0#1.offset);havoc main_~#acopy~0#1.base, main_~#acopy~0#1.offset; [2024-11-09 18:21:04,360 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-09 18:21:04,360 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 18:21:04,371 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 18:21:04,371 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 18:21:04,372 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:21:04 BoogieIcfgContainer [2024-11-09 18:21:04,372 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 18:21:04,375 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 18:21:04,375 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 18:21:04,378 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 18:21:04,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:21:03" (1/3) ... [2024-11-09 18:21:04,380 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7991c5b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:21:04, skipping insertion in model container [2024-11-09 18:21:04,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:21:03" (2/3) ... [2024-11-09 18:21:04,380 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7991c5b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:21:04, skipping insertion in model container [2024-11-09 18:21:04,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:21:04" (3/3) ... [2024-11-09 18:21:04,382 INFO L112 eAbstractionObserver]: Analyzing ICFG array_tiling_tcpy.c [2024-11-09 18:21:04,399 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 18:21:04,400 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 18:21:04,463 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 18:21:04,471 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;@c47cbe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 18:21:04,471 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 18:21:04,476 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 18:21:04,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 18:21:04,485 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:21:04,486 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:21:04,487 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:21:04,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:21:04,494 INFO L85 PathProgramCache]: Analyzing trace with hash -708691949, now seen corresponding path program 1 times [2024-11-09 18:21:04,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:21:04,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120607174] [2024-11-09 18:21:04,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:21:04,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:21:04,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:04,700 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 18:21:04,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:04,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 18:21:04,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:04,716 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:04,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:21:04,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120607174] [2024-11-09 18:21:04,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120607174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:21:04,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:21:04,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:21:04,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903417497] [2024-11-09 18:21:04,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:21:04,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 18:21:04,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:21:04,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 18:21:04,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 18:21:04,753 INFO L87 Difference]: Start difference. First operand has 24 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 18:21:04,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:21:04,767 INFO L93 Difference]: Finished difference Result 44 states and 57 transitions. [2024-11-09 18:21:04,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 18:21:04,770 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2024-11-09 18:21:04,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:21:04,775 INFO L225 Difference]: With dead ends: 44 [2024-11-09 18:21:04,775 INFO L226 Difference]: Without dead ends: 19 [2024-11-09 18:21:04,778 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 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 18:21:04,781 INFO L432 NwaCegarLoop]: 25 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, 25 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 18:21:04,783 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:21:04,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-09 18:21:04,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-09 18:21:04,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 18:21:04,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2024-11-09 18:21:04,819 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 20 [2024-11-09 18:21:04,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:21:04,819 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2024-11-09 18:21:04,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 18:21:04,820 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2024-11-09 18:21:04,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 18:21:04,821 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:21:04,821 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:21:04,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 18:21:04,822 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:21:04,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:21:04,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1078307285, now seen corresponding path program 1 times [2024-11-09 18:21:04,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:21:04,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480341894] [2024-11-09 18:21:04,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:21:04,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:21:04,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:05,101 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 18:21:05,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:05,117 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 18:21:05,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:05,127 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:05,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:21:05,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480341894] [2024-11-09 18:21:05,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480341894] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:21:05,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:21:05,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 18:21:05,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922963899] [2024-11-09 18:21:05,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:21:05,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 18:21:05,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:21:05,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 18:21:05,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:21:05,138 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 18:21:05,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:21:05,190 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2024-11-09 18:21:05,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 18:21:05,191 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2024-11-09 18:21:05,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:21:05,192 INFO L225 Difference]: With dead ends: 38 [2024-11-09 18:21:05,192 INFO L226 Difference]: Without dead ends: 28 [2024-11-09 18:21:05,192 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:21:05,194 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 6 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:21:05,194 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 46 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:21:05,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-09 18:21:05,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 21. [2024-11-09 18:21:05,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 18:21:05,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2024-11-09 18:21:05,202 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 21 [2024-11-09 18:21:05,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:21:05,204 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2024-11-09 18:21:05,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 18:21:05,204 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2024-11-09 18:21:05,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-09 18:21:05,205 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:21:05,224 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:21:05,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 18:21:05,224 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:21:05,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:21:05,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1317015060, now seen corresponding path program 1 times [2024-11-09 18:21:05,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:21:05,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550806282] [2024-11-09 18:21:05,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:21:05,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:21:05,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:05,783 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 18:21:05,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:05,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 18:21:05,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:05,793 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:05,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:21:05,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550806282] [2024-11-09 18:21:05,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550806282] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:21:05,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644885084] [2024-11-09 18:21:05,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:21:05,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:21:05,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:21:05,802 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 18:21:05,804 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 18:21:05,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:05,885 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 18:21:05,892 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:21:05,983 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 30 treesize of output 11 [2024-11-09 18:21:06,086 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:06,088 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:21:06,163 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 37 treesize of output 35 [2024-11-09 18:21:06,171 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 84 treesize of output 82 [2024-11-09 18:21:06,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2024-11-09 18:21:06,228 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:06,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644885084] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:21:06,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:21:06,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-09 18:21:06,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947738772] [2024-11-09 18:21:06,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:21:06,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 18:21:06,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:21:06,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 18:21:06,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-09 18:21:06,231 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 18:21:06,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:21:06,311 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2024-11-09 18:21:06,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 18:21:06,313 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2024-11-09 18:21:06,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:21:06,314 INFO L225 Difference]: With dead ends: 28 [2024-11-09 18:21:06,314 INFO L226 Difference]: Without dead ends: 25 [2024-11-09 18:21:06,314 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-09 18:21:06,315 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 18 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:21:06,315 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 105 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:21:06,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-09 18:21:06,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2024-11-09 18:21:06,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 18:21:06,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2024-11-09 18:21:06,325 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 23 [2024-11-09 18:21:06,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:21:06,325 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2024-11-09 18:21:06,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 18:21:06,326 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2024-11-09 18:21:06,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 18:21:06,326 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:21:06,327 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:21:06,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 18:21:06,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:21:06,532 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:21:06,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:21:06,532 INFO L85 PathProgramCache]: Analyzing trace with hash 57596379, now seen corresponding path program 1 times [2024-11-09 18:21:06,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:21:06,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078420304] [2024-11-09 18:21:06,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:21:06,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:21:06,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:06,676 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 18:21:06,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:06,705 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 18:21:06,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:06,711 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:06,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:21:06,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078420304] [2024-11-09 18:21:06,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078420304] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:21:06,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784768875] [2024-11-09 18:21:06,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:21:06,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:21:06,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:21:06,718 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 18:21:06,720 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 18:21:06,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:06,790 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 18:21:06,792 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:21:06,852 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:06,855 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:21:06,932 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:06,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784768875] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:21:06,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:21:06,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-09 18:21:06,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406589764] [2024-11-09 18:21:06,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:21:06,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 18:21:06,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:21:06,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 18:21:06,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-09 18:21:06,939 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 18:21:07,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:21:07,005 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2024-11-09 18:21:07,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 18:21:07,006 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2024-11-09 18:21:07,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:21:07,008 INFO L225 Difference]: With dead ends: 45 [2024-11-09 18:21:07,009 INFO L226 Difference]: Without dead ends: 34 [2024-11-09 18:21:07,010 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-09 18:21:07,011 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 36 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:21:07,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 60 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:21:07,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-09 18:21:07,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 26. [2024-11-09 18:21:07,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 18:21:07,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2024-11-09 18:21:07,020 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 27 [2024-11-09 18:21:07,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:21:07,021 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2024-11-09 18:21:07,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 18:21:07,021 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2024-11-09 18:21:07,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-09 18:21:07,022 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:21:07,022 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:21:07,040 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 18:21:07,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-09 18:21:07,224 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:21:07,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:21:07,224 INFO L85 PathProgramCache]: Analyzing trace with hash -235482406, now seen corresponding path program 2 times [2024-11-09 18:21:07,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:21:07,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532694541] [2024-11-09 18:21:07,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:21:07,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:21:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:07,661 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 18:21:07,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:07,663 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 18:21:07,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:07,671 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:07,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:21:07,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532694541] [2024-11-09 18:21:07,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532694541] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:21:07,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925016647] [2024-11-09 18:21:07,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:21:07,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:21:07,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:21:07,678 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 18:21:07,680 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 18:21:07,755 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:21:07,755 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:21:07,756 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-09 18:21:07,761 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:21:07,814 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 30 treesize of output 11 [2024-11-09 18:21:07,926 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:07,926 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:21:08,009 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 41 treesize of output 39 [2024-11-09 18:21:08,014 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 214 treesize of output 206 [2024-11-09 18:21:08,019 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 36 treesize of output 24 [2024-11-09 18:21:08,063 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:08,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925016647] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:21:08,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:21:08,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-09 18:21:08,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12412361] [2024-11-09 18:21:08,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:21:08,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 18:21:08,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:21:08,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 18:21:08,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-11-09 18:21:08,066 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 18:21:08,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:21:08,162 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2024-11-09 18:21:08,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 18:21:08,163 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2024-11-09 18:21:08,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:21:08,164 INFO L225 Difference]: With dead ends: 34 [2024-11-09 18:21:08,164 INFO L226 Difference]: Without dead ends: 31 [2024-11-09 18:21:08,164 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-11-09 18:21:08,165 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 28 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:21:08,166 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 160 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:21:08,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-09 18:21:08,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2024-11-09 18:21:08,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 26 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 18:21:08,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2024-11-09 18:21:08,173 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 29 [2024-11-09 18:21:08,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:21:08,173 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2024-11-09 18:21:08,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 18:21:08,174 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2024-11-09 18:21:08,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 18:21:08,174 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:21:08,175 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:21:08,192 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 18:21:08,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:21:08,379 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:21:08,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:21:08,380 INFO L85 PathProgramCache]: Analyzing trace with hash -792081503, now seen corresponding path program 3 times [2024-11-09 18:21:08,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:21:08,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87885901] [2024-11-09 18:21:08,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:21:08,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:21:08,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:08,938 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 18:21:08,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:08,944 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 18:21:08,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:08,948 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:08,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:21:08,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87885901] [2024-11-09 18:21:08,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87885901] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:21:08,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970847448] [2024-11-09 18:21:08,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:21:08,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:21:08,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:21:08,951 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 18:21:08,953 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 18:21:09,032 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 18:21:09,033 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:21:09,035 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-09 18:21:09,038 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:21:09,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 19 [2024-11-09 18:21:09,448 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 18:21:09,448 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:21:09,665 INFO L349 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2024-11-09 18:21:09,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 35 [2024-11-09 18:21:09,757 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:09,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970847448] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:21:09,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:21:09,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 10] total 26 [2024-11-09 18:21:09,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126373633] [2024-11-09 18:21:09,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:21:09,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 18:21:09,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:21:09,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 18:21:09,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2024-11-09 18:21:09,760 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 25 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 18:21:10,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:21:10,260 INFO L93 Difference]: Finished difference Result 59 states and 63 transitions. [2024-11-09 18:21:10,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-09 18:21:10,262 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 25 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 33 [2024-11-09 18:21:10,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:21:10,262 INFO L225 Difference]: With dead ends: 59 [2024-11-09 18:21:10,262 INFO L226 Difference]: Without dead ends: 56 [2024-11-09 18:21:10,263 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=217, Invalid=1189, Unknown=0, NotChecked=0, Total=1406 [2024-11-09 18:21:10,264 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 84 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:21:10,264 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 212 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:21:10,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-09 18:21:10,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 39. [2024-11-09 18:21:10,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 35 states have internal predecessors, (39), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 18:21:10,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2024-11-09 18:21:10,279 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 33 [2024-11-09 18:21:10,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:21:10,279 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2024-11-09 18:21:10,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 25 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 18:21:10,280 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2024-11-09 18:21:10,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 18:21:10,280 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:21:10,281 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:21:10,299 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 18:21:10,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:21:10,481 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:21:10,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:21:10,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1470822168, now seen corresponding path program 4 times [2024-11-09 18:21:10,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:21:10,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89246529] [2024-11-09 18:21:10,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:21:10,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:21:10,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:11,133 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 18:21:11,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:11,138 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 18:21:11,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:11,142 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:11,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:21:11,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89246529] [2024-11-09 18:21:11,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89246529] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:21:11,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377845929] [2024-11-09 18:21:11,143 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 18:21:11,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:21:11,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:21:11,147 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 18:21:11,149 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 18:21:11,256 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 18:21:11,256 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:21:11,257 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-09 18:21:11,260 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:21:11,292 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 30 treesize of output 19 [2024-11-09 18:21:11,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:21:11,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 23 [2024-11-09 18:21:11,638 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:11,639 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:21:11,888 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-09 18:21:11,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 44 [2024-11-09 18:21:11,918 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:11,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377845929] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:21:11,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:21:11,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2024-11-09 18:21:11,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144365461] [2024-11-09 18:21:11,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:21:11,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-09 18:21:11,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:21:11,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-09 18:21:11,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2024-11-09 18:21:11,921 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 27 states, 27 states have (on average 2.7037037037037037) internal successors, (73), 27 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 18:21:12,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:21:12,376 INFO L93 Difference]: Finished difference Result 80 states and 85 transitions. [2024-11-09 18:21:12,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-09 18:21:12,376 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.7037037037037037) internal successors, (73), 27 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2024-11-09 18:21:12,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:21:12,378 INFO L225 Difference]: With dead ends: 80 [2024-11-09 18:21:12,378 INFO L226 Difference]: Without dead ends: 58 [2024-11-09 18:21:12,379 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=248, Invalid=1234, Unknown=0, NotChecked=0, Total=1482 [2024-11-09 18:21:12,379 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 64 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:21:12,379 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 330 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:21:12,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-09 18:21:12,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 43. [2024-11-09 18:21:12,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 39 states have internal predecessors, (42), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 18:21:12,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2024-11-09 18:21:12,393 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 37 [2024-11-09 18:21:12,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:21:12,393 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2024-11-09 18:21:12,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.7037037037037037) internal successors, (73), 27 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 18:21:12,393 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2024-11-09 18:21:12,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 18:21:12,394 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:21:12,395 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:21:12,414 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 18:21:12,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:21:12,596 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:21:12,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:21:12,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1408806049, now seen corresponding path program 5 times [2024-11-09 18:21:12,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:21:12,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83066274] [2024-11-09 18:21:12,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:21:12,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:21:12,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:13,075 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 18:21:13,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:13,078 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 18:21:13,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:13,082 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:13,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:21:13,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83066274] [2024-11-09 18:21:13,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83066274] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:21:13,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692876517] [2024-11-09 18:21:13,083 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 18:21:13,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:21:13,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:21:13,085 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 18:21:13,086 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 18:21:13,169 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-09 18:21:13,169 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:21:13,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-09 18:21:13,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:21:13,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 11 [2024-11-09 18:21:13,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:21:13,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:21:13,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 15 [2024-11-09 18:21:13,597 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 18:21:13,597 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:21:13,786 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 59 treesize of output 57 [2024-11-09 18:21:13,791 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 1494 treesize of output 1478 [2024-11-09 18:21:13,812 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 236 treesize of output 170 [2024-11-09 18:21:14,014 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:14,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692876517] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:21:14,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:21:14,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 11] total 29 [2024-11-09 18:21:14,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632380379] [2024-11-09 18:21:14,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:21:14,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-09 18:21:14,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:21:14,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-09 18:21:14,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=716, Unknown=0, NotChecked=0, Total=812 [2024-11-09 18:21:14,017 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand has 29 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 28 states have internal predecessors, (72), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 18:21:14,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:21:14,349 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2024-11-09 18:21:14,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 18:21:14,355 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 28 states have internal predecessors, (72), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 37 [2024-11-09 18:21:14,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:21:14,356 INFO L225 Difference]: With dead ends: 58 [2024-11-09 18:21:14,356 INFO L226 Difference]: Without dead ends: 55 [2024-11-09 18:21:14,356 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=154, Invalid=968, Unknown=0, NotChecked=0, Total=1122 [2024-11-09 18:21:14,357 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 53 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:21:14,357 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 336 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:21:14,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-09 18:21:14,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 43. [2024-11-09 18:21:14,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 39 states have internal predecessors, (42), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 18:21:14,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2024-11-09 18:21:14,365 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 37 [2024-11-09 18:21:14,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:21:14,366 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2024-11-09 18:21:14,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 28 states have internal predecessors, (72), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 18:21:14,366 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2024-11-09 18:21:14,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-09 18:21:14,367 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:21:14,367 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:21:14,380 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 18:21:14,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:21:14,569 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:21:14,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:21:14,569 INFO L85 PathProgramCache]: Analyzing trace with hash 367821222, now seen corresponding path program 6 times [2024-11-09 18:21:14,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:21:14,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79269631] [2024-11-09 18:21:14,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:21:14,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:21:14,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:15,047 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 18:21:15,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:15,049 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 18:21:15,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:15,051 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:15,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:21:15,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79269631] [2024-11-09 18:21:15,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79269631] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:21:15,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963545603] [2024-11-09 18:21:15,051 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 18:21:15,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:21:15,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:21:15,053 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 18:21:15,055 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 18:21:15,168 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-09 18:21:15,169 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:21:15,170 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-09 18:21:15,174 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:21:15,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 11 [2024-11-09 18:21:15,405 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:15,405 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:21:15,542 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 41 treesize of output 39 [2024-11-09 18:21:15,547 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 214 treesize of output 206 [2024-11-09 18:21:15,553 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 36 treesize of output 24 [2024-11-09 18:21:15,625 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:15,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963545603] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:21:15,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:21:15,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 24 [2024-11-09 18:21:15,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352669088] [2024-11-09 18:21:15,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:21:15,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 18:21:15,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:21:15,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 18:21:15,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2024-11-09 18:21:15,627 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand has 24 states, 24 states have (on average 2.6666666666666665) internal successors, (64), 24 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 18:21:15,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:21:15,858 INFO L93 Difference]: Finished difference Result 70 states and 73 transitions. [2024-11-09 18:21:15,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 18:21:15,859 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.6666666666666665) internal successors, (64), 24 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 41 [2024-11-09 18:21:15,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:21:15,860 INFO L225 Difference]: With dead ends: 70 [2024-11-09 18:21:15,860 INFO L226 Difference]: Without dead ends: 67 [2024-11-09 18:21:15,860 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2024-11-09 18:21:15,861 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 38 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:21:15,861 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 453 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:21:15,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-09 18:21:15,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 40. [2024-11-09 18:21:15,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 36 states have internal predecessors, (38), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 18:21:15,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2024-11-09 18:21:15,876 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 41 [2024-11-09 18:21:15,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:21:15,876 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2024-11-09 18:21:15,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.6666666666666665) internal successors, (64), 24 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 18:21:15,877 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2024-11-09 18:21:15,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-09 18:21:15,877 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:21:15,878 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:21:15,895 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 18:21:16,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:21:16,079 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:21:16,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:21:16,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1465443986, now seen corresponding path program 7 times [2024-11-09 18:21:16,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:21:16,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130159053] [2024-11-09 18:21:16,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:21:16,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:21:16,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:16,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 18:21:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:16,718 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 18:21:16,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:16,720 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:16,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:21:16,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130159053] [2024-11-09 18:21:16,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130159053] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:21:16,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235105479] [2024-11-09 18:21:16,724 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 18:21:16,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:21:16,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:21:16,728 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 18:21:16,731 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 18:21:16,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:16,808 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-09 18:21:16,813 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:21:16,924 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 35 treesize of output 20 [2024-11-09 18:21:16,994 INFO L349 Elim1Store]: treesize reduction 28, result has 30.0 percent of original size [2024-11-09 18:21:16,994 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 1 case distinctions, treesize of input 57 treesize of output 24 [2024-11-09 18:21:17,343 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 18:21:17,344 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:21:17,642 INFO L349 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2024-11-09 18:21:17,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 50 [2024-11-09 18:21:17,736 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:17,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235105479] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:21:17,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:21:17,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16, 13] total 37 [2024-11-09 18:21:17,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681981567] [2024-11-09 18:21:17,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:21:17,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-09 18:21:17,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:21:17,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-09 18:21:17,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1201, Unknown=0, NotChecked=0, Total=1332 [2024-11-09 18:21:17,739 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 37 states, 37 states have (on average 2.5945945945945947) internal successors, (96), 36 states have internal predecessors, (96), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 18:21:18,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:21:18,523 INFO L93 Difference]: Finished difference Result 83 states and 87 transitions. [2024-11-09 18:21:18,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 18:21:18,525 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.5945945945945947) internal successors, (96), 36 states have internal predecessors, (96), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 43 [2024-11-09 18:21:18,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:21:18,526 INFO L225 Difference]: With dead ends: 83 [2024-11-09 18:21:18,527 INFO L226 Difference]: Without dead ends: 80 [2024-11-09 18:21:18,528 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=304, Invalid=2452, Unknown=0, NotChecked=0, Total=2756 [2024-11-09 18:21:18,529 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 163 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 18:21:18,529 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 441 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 18:21:18,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-09 18:21:18,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 49. [2024-11-09 18:21:18,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 45 states have (on average 1.0888888888888888) internal successors, (49), 45 states have internal predecessors, (49), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 18:21:18,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2024-11-09 18:21:18,541 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 43 [2024-11-09 18:21:18,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:21:18,542 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2024-11-09 18:21:18,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.5945945945945947) internal successors, (96), 36 states have internal predecessors, (96), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 18:21:18,542 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2024-11-09 18:21:18,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-09 18:21:18,543 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:21:18,543 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:21:18,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 18:21:18,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 18:21:18,743 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:21:18,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:21:18,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1844664267, now seen corresponding path program 8 times [2024-11-09 18:21:18,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:21:18,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064974459] [2024-11-09 18:21:18,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:21:18,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:21:18,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:19,381 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 18:21:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:19,383 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 18:21:19,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:19,385 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:19,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:21:19,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064974459] [2024-11-09 18:21:19,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064974459] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:21:19,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353407655] [2024-11-09 18:21:19,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:21:19,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:21:19,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:21:19,389 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 18:21:19,391 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 18:21:19,480 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:21:19,481 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:21:19,483 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-09 18:21:19,485 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:21:19,511 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 31 treesize of output 20 [2024-11-09 18:21:19,561 INFO L349 Elim1Store]: treesize reduction 24, result has 40.0 percent of original size [2024-11-09 18:21:19,561 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 1 case distinctions, treesize of input 57 treesize of output 28 [2024-11-09 18:21:19,618 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 57 treesize of output 24 [2024-11-09 18:21:19,986 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:19,987 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:21:20,381 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-09 18:21:20,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 60 [2024-11-09 18:21:20,412 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:20,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353407655] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:21:20,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:21:20,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 37 [2024-11-09 18:21:20,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559044693] [2024-11-09 18:21:20,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:21:20,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-09 18:21:20,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:21:20,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-09 18:21:20,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1155, Unknown=0, NotChecked=0, Total=1332 [2024-11-09 18:21:20,415 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand has 37 states, 37 states have (on average 2.8378378378378377) internal successors, (105), 37 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 18:21:21,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:21:21,001 INFO L93 Difference]: Finished difference Result 94 states and 98 transitions. [2024-11-09 18:21:21,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-09 18:21:21,003 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.8378378378378377) internal successors, (105), 37 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 47 [2024-11-09 18:21:21,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:21:21,004 INFO L225 Difference]: With dead ends: 94 [2024-11-09 18:21:21,004 INFO L226 Difference]: Without dead ends: 91 [2024-11-09 18:21:21,005 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=253, Invalid=1727, Unknown=0, NotChecked=0, Total=1980 [2024-11-09 18:21:21,006 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 105 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 18:21:21,007 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 546 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 18:21:21,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-09 18:21:21,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 53. [2024-11-09 18:21:21,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 49 states have internal predecessors, (53), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 18:21:21,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2024-11-09 18:21:21,028 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 47 [2024-11-09 18:21:21,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:21:21,028 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2024-11-09 18:21:21,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.8378378378378377) internal successors, (105), 37 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 18:21:21,028 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2024-11-09 18:21:21,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-09 18:21:21,029 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:21:21,029 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:21:21,048 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 18:21:21,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:21:21,230 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:21:21,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:21:21,231 INFO L85 PathProgramCache]: Analyzing trace with hash 2007272364, now seen corresponding path program 9 times [2024-11-09 18:21:21,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:21:21,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322521374] [2024-11-09 18:21:21,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:21:21,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:21:21,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:21,769 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 18:21:21,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:21,771 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 18:21:21,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:21,773 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:21,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:21:21,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322521374] [2024-11-09 18:21:21,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322521374] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:21:21,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506270843] [2024-11-09 18:21:21,774 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:21:21,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:21:21,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:21:21,776 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 18:21:21,778 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 18:21:21,928 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-09 18:21:21,928 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:21:21,931 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-09 18:21:21,933 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:21:22,157 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 34 treesize of output 13 [2024-11-09 18:21:22,443 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 18:21:22,443 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:21:22,635 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 41 treesize of output 39 [2024-11-09 18:21:22,640 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 94 treesize of output 90 [2024-11-09 18:21:22,644 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 44 treesize of output 32 [2024-11-09 18:21:22,853 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:22,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506270843] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:21:22,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:21:22,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 14] total 40 [2024-11-09 18:21:22,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465286319] [2024-11-09 18:21:22,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:21:22,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-09 18:21:22,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:21:22,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-09 18:21:22,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1433, Unknown=0, NotChecked=0, Total=1560 [2024-11-09 18:21:22,858 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand has 40 states, 40 states have (on average 2.7) internal successors, (108), 39 states have internal predecessors, (108), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 18:21:23,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:21:23,751 INFO L93 Difference]: Finished difference Result 83 states and 87 transitions. [2024-11-09 18:21:23,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-09 18:21:23,752 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.7) internal successors, (108), 39 states have internal predecessors, (108), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2024-11-09 18:21:23,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:21:23,753 INFO L225 Difference]: With dead ends: 83 [2024-11-09 18:21:23,753 INFO L226 Difference]: Without dead ends: 80 [2024-11-09 18:21:23,754 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=286, Invalid=2906, Unknown=0, NotChecked=0, Total=3192 [2024-11-09 18:21:23,754 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 116 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 18:21:23,755 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 962 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 18:21:23,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-09 18:21:23,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 53. [2024-11-09 18:21:23,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 49 states have internal predecessors, (53), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 18:21:23,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2024-11-09 18:21:23,772 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 47 [2024-11-09 18:21:23,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:21:23,772 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2024-11-09 18:21:23,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.7) internal successors, (108), 39 states have internal predecessors, (108), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 18:21:23,773 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2024-11-09 18:21:23,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-09 18:21:23,773 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:21:23,773 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:21:23,790 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 18:21:23,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-09 18:21:23,974 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:21:23,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:21:23,975 INFO L85 PathProgramCache]: Analyzing trace with hash 485456764, now seen corresponding path program 10 times [2024-11-09 18:21:23,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:21:23,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368335906] [2024-11-09 18:21:23,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:21:23,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:21:23,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:24,159 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 18:21:24,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:24,162 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 18:21:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:24,165 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 56 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:24,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:21:24,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368335906] [2024-11-09 18:21:24,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368335906] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:21:24,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819991558] [2024-11-09 18:21:24,165 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 18:21:24,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:21:24,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:21:24,167 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 18:21:24,169 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 18:21:24,342 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 18:21:24,343 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:21:24,345 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 18:21:24,346 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:21:24,537 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 78 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:24,537 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:21:24,660 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 78 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:24,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819991558] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:21:24,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:21:24,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 23 [2024-11-09 18:21:24,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415336264] [2024-11-09 18:21:24,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:21:24,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 18:21:24,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:21:24,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 18:21:24,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2024-11-09 18:21:24,662 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand has 23 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 23 states have internal predecessors, (79), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 18:21:24,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:21:24,794 INFO L93 Difference]: Finished difference Result 103 states and 107 transitions. [2024-11-09 18:21:24,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 18:21:24,794 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 23 states have internal predecessors, (79), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 51 [2024-11-09 18:21:24,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:21:24,797 INFO L225 Difference]: With dead ends: 103 [2024-11-09 18:21:24,797 INFO L226 Difference]: Without dead ends: 69 [2024-11-09 18:21:24,797 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 87 SyntacticMatches, 10 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2024-11-09 18:21:24,798 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 30 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:21:24,798 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 185 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:21:24,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-09 18:21:24,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 53. [2024-11-09 18:21:24,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 49 states have internal predecessors, (52), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 18:21:24,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2024-11-09 18:21:24,814 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 51 [2024-11-09 18:21:24,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:21:24,814 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2024-11-09 18:21:24,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 23 states have internal predecessors, (79), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 18:21:24,815 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2024-11-09 18:21:24,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-09 18:21:24,816 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:21:24,816 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:21:24,830 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 18:21:25,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 18:21:25,017 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:21:25,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:21:25,018 INFO L85 PathProgramCache]: Analyzing trace with hash -462763149, now seen corresponding path program 11 times [2024-11-09 18:21:25,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:21:25,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98185477] [2024-11-09 18:21:25,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:21:25,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:21:25,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:25,582 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 18:21:25,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:25,585 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 18:21:25,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:25,587 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:25,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:21:25,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98185477] [2024-11-09 18:21:25,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98185477] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:21:25,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764914020] [2024-11-09 18:21:25,587 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 18:21:25,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:21:25,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:21:25,589 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 18:21:25,592 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 18:21:25,715 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-09 18:21:25,715 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:21:25,717 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-09 18:21:25,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:21:25,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 19 [2024-11-09 18:21:25,952 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:25,952 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:21:26,126 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-09 18:21:26,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 28 [2024-11-09 18:21:26,221 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:26,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764914020] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:21:26,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:21:26,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2024-11-09 18:21:26,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124558302] [2024-11-09 18:21:26,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:21:26,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-09 18:21:26,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:21:26,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-09 18:21:26,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=876, Unknown=0, NotChecked=0, Total=992 [2024-11-09 18:21:26,225 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand has 32 states, 32 states have (on average 2.71875) internal successors, (87), 32 states have internal predecessors, (87), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 18:21:26,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:21:26,646 INFO L93 Difference]: Finished difference Result 113 states and 118 transitions. [2024-11-09 18:21:26,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 18:21:26,646 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.71875) internal successors, (87), 32 states have internal predecessors, (87), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 51 [2024-11-09 18:21:26,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:21:26,647 INFO L225 Difference]: With dead ends: 113 [2024-11-09 18:21:26,647 INFO L226 Difference]: Without dead ends: 110 [2024-11-09 18:21:26,647 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=139, Invalid=1051, Unknown=0, NotChecked=0, Total=1190 [2024-11-09 18:21:26,648 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 49 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 18:21:26,651 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 763 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 18:21:26,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-09 18:21:26,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 57. [2024-11-09 18:21:26,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 53 states have internal predecessors, (58), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 18:21:26,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2024-11-09 18:21:26,667 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 51 [2024-11-09 18:21:26,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:21:26,667 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2024-11-09 18:21:26,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.71875) internal successors, (87), 32 states have internal predecessors, (87), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 18:21:26,667 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2024-11-09 18:21:26,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-09 18:21:26,668 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:21:26,668 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:21:26,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-09 18:21:26,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 18:21:26,869 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:21:26,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:21:26,869 INFO L85 PathProgramCache]: Analyzing trace with hash 489432955, now seen corresponding path program 12 times [2024-11-09 18:21:26,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:21:26,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255003634] [2024-11-09 18:21:26,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:21:26,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:21:26,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:27,663 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 18:21:27,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:27,666 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 18:21:27,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:27,668 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:27,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:21:27,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255003634] [2024-11-09 18:21:27,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255003634] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:21:27,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559637822] [2024-11-09 18:21:27,668 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 18:21:27,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:21:27,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:21:27,670 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 18:21:27,671 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 18:21:27,807 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-09 18:21:27,807 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:21:27,809 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-09 18:21:27,812 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:21:27,852 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 30 treesize of output 19 [2024-11-09 18:21:27,911 INFO L349 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2024-11-09 18:21:27,912 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 1 case distinctions, treesize of input 50 treesize of output 27 [2024-11-09 18:21:27,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 23 [2024-11-09 18:21:28,363 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:28,363 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:21:28,864 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-09 18:21:28,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 60 [2024-11-09 18:21:28,986 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:28,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559637822] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:21:28,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:21:28,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 40 [2024-11-09 18:21:28,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203642747] [2024-11-09 18:21:28,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:21:28,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-09 18:21:28,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:21:28,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-09 18:21:28,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1408, Unknown=0, NotChecked=0, Total=1560 [2024-11-09 18:21:28,990 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand has 40 states, 40 states have (on average 2.925) internal successors, (117), 40 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 18:21:29,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:21:29,590 INFO L93 Difference]: Finished difference Result 119 states and 124 transitions. [2024-11-09 18:21:29,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-09 18:21:29,591 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.925) internal successors, (117), 40 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 53 [2024-11-09 18:21:29,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:21:29,592 INFO L225 Difference]: With dead ends: 119 [2024-11-09 18:21:29,592 INFO L226 Difference]: Without dead ends: 116 [2024-11-09 18:21:29,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=259, Invalid=2093, Unknown=0, NotChecked=0, Total=2352 [2024-11-09 18:21:29,594 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 78 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 18:21:29,594 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 778 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 18:21:29,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-09 18:21:29,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 62. [2024-11-09 18:21:29,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 58 states have (on average 1.0862068965517242) internal successors, (63), 58 states have internal predecessors, (63), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 18:21:29,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 67 transitions. [2024-11-09 18:21:29,609 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 67 transitions. Word has length 53 [2024-11-09 18:21:29,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:21:29,610 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 67 transitions. [2024-11-09 18:21:29,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.925) internal successors, (117), 40 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 18:21:29,610 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 67 transitions. [2024-11-09 18:21:29,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-09 18:21:29,611 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:21:29,611 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 6, 6, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:21:29,631 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-09 18:21:29,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 18:21:29,811 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:21:29,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:21:29,812 INFO L85 PathProgramCache]: Analyzing trace with hash -932634703, now seen corresponding path program 13 times [2024-11-09 18:21:29,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:21:29,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160796520] [2024-11-09 18:21:29,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:21:29,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:21:29,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:30,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 18:21:30,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:30,421 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 18:21:30,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:30,422 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:30,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:21:30,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160796520] [2024-11-09 18:21:30,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160796520] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:21:30,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908167082] [2024-11-09 18:21:30,423 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 18:21:30,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:21:30,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:21:30,425 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:21:30,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 18:21:30,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:30,522 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-09 18:21:30,525 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:21:30,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 11 [2024-11-09 18:21:30,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:21:30,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:21:30,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 15 [2024-11-09 18:21:30,952 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 18:21:30,952 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:21:31,222 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 59 treesize of output 57 [2024-11-09 18:21:31,227 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 13430 treesize of output 13302 [2024-11-09 18:21:31,242 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 183 treesize of output 135 [2024-11-09 18:21:31,524 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:31,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908167082] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:21:31,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:21:31,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20, 17] total 42 [2024-11-09 18:21:31,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927963747] [2024-11-09 18:21:31,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:21:31,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-09 18:21:31,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:21:31,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-09 18:21:31,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1575, Unknown=0, NotChecked=0, Total=1722 [2024-11-09 18:21:31,527 INFO L87 Difference]: Start difference. First operand 62 states and 67 transitions. Second operand has 42 states, 42 states have (on average 2.5714285714285716) internal successors, (108), 41 states have internal predecessors, (108), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 18:21:32,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:21:32,283 INFO L93 Difference]: Finished difference Result 119 states and 124 transitions. [2024-11-09 18:21:32,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-09 18:21:32,284 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.5714285714285716) internal successors, (108), 41 states have internal predecessors, (108), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 55 [2024-11-09 18:21:32,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:21:32,284 INFO L225 Difference]: With dead ends: 119 [2024-11-09 18:21:32,284 INFO L226 Difference]: Without dead ends: 116 [2024-11-09 18:21:32,285 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=274, Invalid=2806, Unknown=0, NotChecked=0, Total=3080 [2024-11-09 18:21:32,286 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 91 mSDsluCounter, 970 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 18:21:32,286 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 1016 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 18:21:32,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-09 18:21:32,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 59. [2024-11-09 18:21:32,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 55 states have (on average 1.0727272727272728) internal successors, (59), 55 states have internal predecessors, (59), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 18:21:32,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2024-11-09 18:21:32,304 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 55 [2024-11-09 18:21:32,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:21:32,304 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2024-11-09 18:21:32,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.5714285714285716) internal successors, (108), 41 states have internal predecessors, (108), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 18:21:32,304 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2024-11-09 18:21:32,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-09 18:21:32,305 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:21:32,305 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:21:32,319 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-09 18:21:32,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:21:32,506 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:21:32,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:21:32,506 INFO L85 PathProgramCache]: Analyzing trace with hash 34727874, now seen corresponding path program 14 times [2024-11-09 18:21:32,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:21:32,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296833951] [2024-11-09 18:21:32,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:21:32,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:21:32,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:33,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 18:21:33,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:33,326 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 18:21:33,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:33,328 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:33,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:21:33,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296833951] [2024-11-09 18:21:33,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296833951] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:21:33,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306083467] [2024-11-09 18:21:33,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:21:33,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:21:33,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:21:33,330 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:21:33,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 18:21:33,434 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:21:33,434 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:21:33,436 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-09 18:21:33,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:21:33,465 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 32 treesize of output 21 [2024-11-09 18:21:33,511 INFO L349 Elim1Store]: treesize reduction 24, result has 40.0 percent of original size [2024-11-09 18:21:33,511 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 1 case distinctions, treesize of input 58 treesize of output 29 [2024-11-09 18:21:33,547 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 62 treesize of output 29 [2024-11-09 18:21:33,590 INFO L349 Elim1Store]: treesize reduction 28, result has 30.0 percent of original size [2024-11-09 18:21:33,590 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 1 case distinctions, treesize of input 58 treesize of output 25 [2024-11-09 18:21:33,967 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:33,967 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:21:34,684 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-09 18:21:34,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 76 [2024-11-09 18:21:34,694 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:34,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306083467] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:21:34,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:21:34,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 44 [2024-11-09 18:21:34,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362790383] [2024-11-09 18:21:34,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:21:34,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-09 18:21:34,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:21:34,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-09 18:21:34,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1740, Unknown=0, NotChecked=0, Total=1892 [2024-11-09 18:21:34,698 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand has 44 states, 44 states have (on average 3.022727272727273) internal successors, (133), 44 states have internal predecessors, (133), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 18:21:35,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:21:35,685 INFO L93 Difference]: Finished difference Result 119 states and 123 transitions. [2024-11-09 18:21:35,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-09 18:21:35,686 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.022727272727273) internal successors, (133), 44 states have internal predecessors, (133), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2024-11-09 18:21:35,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:21:35,686 INFO L225 Difference]: With dead ends: 119 [2024-11-09 18:21:35,686 INFO L226 Difference]: Without dead ends: 116 [2024-11-09 18:21:35,687 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=340, Invalid=3566, Unknown=0, NotChecked=0, Total=3906 [2024-11-09 18:21:35,688 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 104 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 18:21:35,688 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 844 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 18:21:35,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-09 18:21:35,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 63. [2024-11-09 18:21:35,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 59 states have (on average 1.0677966101694916) internal successors, (63), 59 states have internal predecessors, (63), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 18:21:35,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2024-11-09 18:21:35,713 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 57 [2024-11-09 18:21:35,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:21:35,713 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2024-11-09 18:21:35,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.022727272727273) internal successors, (133), 44 states have internal predecessors, (133), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 18:21:35,713 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2024-11-09 18:21:35,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-09 18:21:35,713 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:21:35,714 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:21:35,727 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-09 18:21:35,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 18:21:35,914 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:21:35,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:21:35,915 INFO L85 PathProgramCache]: Analyzing trace with hash -85564359, now seen corresponding path program 15 times [2024-11-09 18:21:35,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:21:35,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431044244] [2024-11-09 18:21:35,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:21:35,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:21:35,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:36,586 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 18:21:36,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:36,588 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 18:21:36,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:36,590 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:36,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:21:36,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431044244] [2024-11-09 18:21:36,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431044244] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:21:36,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390565876] [2024-11-09 18:21:36,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:21:36,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:21:36,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:21:36,593 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:21:36,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 18:21:36,910 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-09 18:21:36,910 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:21:36,912 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-09 18:21:36,914 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:21:37,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 19 [2024-11-09 18:21:37,410 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:37,410 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:21:37,752 INFO L349 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2024-11-09 18:21:37,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 35 [2024-11-09 18:21:37,931 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:37,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390565876] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:21:37,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:21:37,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 47 [2024-11-09 18:21:37,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544203499] [2024-11-09 18:21:37,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:21:37,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-09 18:21:37,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:21:37,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-09 18:21:37,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1986, Unknown=0, NotChecked=0, Total=2162 [2024-11-09 18:21:37,934 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand has 47 states, 47 states have (on average 2.702127659574468) internal successors, (127), 47 states have internal predecessors, (127), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 18:21:38,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:21:38,650 INFO L93 Difference]: Finished difference Result 131 states and 137 transitions. [2024-11-09 18:21:38,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-09 18:21:38,651 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.702127659574468) internal successors, (127), 47 states have internal predecessors, (127), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2024-11-09 18:21:38,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:21:38,652 INFO L225 Difference]: With dead ends: 131 [2024-11-09 18:21:38,652 INFO L226 Difference]: Without dead ends: 128 [2024-11-09 18:21:38,652 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=282, Invalid=2910, Unknown=0, NotChecked=0, Total=3192 [2024-11-09 18:21:38,653 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 58 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 1111 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 18:21:38,653 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 1171 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1111 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 18:21:38,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-09 18:21:38,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 68. [2024-11-09 18:21:38,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 64 states have (on average 1.09375) internal successors, (70), 64 states have internal predecessors, (70), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 18:21:38,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 74 transitions. [2024-11-09 18:21:38,677 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 74 transitions. Word has length 57 [2024-11-09 18:21:38,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:21:38,678 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 74 transitions. [2024-11-09 18:21:38,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.702127659574468) internal successors, (127), 47 states have internal predecessors, (127), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 18:21:38,678 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 74 transitions. [2024-11-09 18:21:38,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-09 18:21:38,678 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:21:38,678 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:21:38,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-09 18:21:38,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 18:21:38,879 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:21:38,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:21:38,880 INFO L85 PathProgramCache]: Analyzing trace with hash -2113917815, now seen corresponding path program 16 times [2024-11-09 18:21:38,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:21:38,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858493332] [2024-11-09 18:21:38,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:21:38,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:21:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:39,120 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 18:21:39,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:39,122 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 18:21:39,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:39,124 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 106 proven. 50 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:39,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:21:39,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858493332] [2024-11-09 18:21:39,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858493332] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:21:39,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232888368] [2024-11-09 18:21:39,125 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 18:21:39,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:21:39,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:21:39,127 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:21:39,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 18:21:39,477 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 18:21:39,477 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:21:39,479 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 18:21:39,481 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:21:39,678 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 136 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:39,678 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:21:39,804 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 136 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:39,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232888368] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:21:39,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:21:39,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 28 [2024-11-09 18:21:39,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857465274] [2024-11-09 18:21:39,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:21:39,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-09 18:21:39,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:21:39,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-09 18:21:39,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=553, Unknown=0, NotChecked=0, Total=756 [2024-11-09 18:21:39,807 INFO L87 Difference]: Start difference. First operand 68 states and 74 transitions. Second operand has 28 states, 28 states have (on average 3.4642857142857144) internal successors, (97), 28 states have internal predecessors, (97), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 18:21:39,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:21:39,933 INFO L93 Difference]: Finished difference Result 150 states and 156 transitions. [2024-11-09 18:21:39,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 18:21:39,933 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.4642857142857144) internal successors, (97), 28 states have internal predecessors, (97), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 61 [2024-11-09 18:21:39,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:21:39,934 INFO L225 Difference]: With dead ends: 150 [2024-11-09 18:21:39,934 INFO L226 Difference]: Without dead ends: 108 [2024-11-09 18:21:39,935 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 102 SyntacticMatches, 13 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=253, Invalid=739, Unknown=0, NotChecked=0, Total=992 [2024-11-09 18:21:39,936 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 45 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:21:39,936 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 156 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:21:39,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-09 18:21:39,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 68. [2024-11-09 18:21:39,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 64 states have (on average 1.078125) internal successors, (69), 64 states have internal predecessors, (69), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 18:21:39,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 73 transitions. [2024-11-09 18:21:39,963 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 73 transitions. Word has length 61 [2024-11-09 18:21:39,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:21:39,963 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 73 transitions. [2024-11-09 18:21:39,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.4642857142857144) internal successors, (97), 28 states have internal predecessors, (97), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 18:21:39,963 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 73 transitions. [2024-11-09 18:21:39,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-09 18:21:39,964 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:21:39,964 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:21:39,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-09 18:21:40,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:21:40,165 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:21:40,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:21:40,165 INFO L85 PathProgramCache]: Analyzing trace with hash -893151872, now seen corresponding path program 17 times [2024-11-09 18:21:40,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:21:40,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420229696] [2024-11-09 18:21:40,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:21:40,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:21:40,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:40,981 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 18:21:40,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:40,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 18:21:40,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:40,985 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:40,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:21:40,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420229696] [2024-11-09 18:21:40,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420229696] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:21:40,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442333163] [2024-11-09 18:21:40,985 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 18:21:40,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:21:40,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:21:40,987 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:21:40,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-09 18:21:41,289 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-09 18:21:41,290 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:21:41,293 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-09 18:21:41,296 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:21:41,346 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 30 treesize of output 19 [2024-11-09 18:21:41,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:21:41,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 23 [2024-11-09 18:21:41,830 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:41,831 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:21:42,197 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-09 18:21:42,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 44 [2024-11-09 18:21:42,338 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:42,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442333163] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:21:42,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:21:42,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 45 [2024-11-09 18:21:42,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538719802] [2024-11-09 18:21:42,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:21:42,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-09 18:21:42,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:21:42,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-09 18:21:42,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1816, Unknown=0, NotChecked=0, Total=1980 [2024-11-09 18:21:42,340 INFO L87 Difference]: Start difference. First operand 68 states and 73 transitions. Second operand has 45 states, 45 states have (on average 2.9555555555555557) internal successors, (133), 45 states have internal predecessors, (133), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 18:21:42,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:21:42,992 INFO L93 Difference]: Finished difference Result 138 states and 143 transitions. [2024-11-09 18:21:42,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-09 18:21:42,993 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.9555555555555557) internal successors, (133), 45 states have internal predecessors, (133), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 61 [2024-11-09 18:21:42,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:21:42,993 INFO L225 Difference]: With dead ends: 138 [2024-11-09 18:21:42,993 INFO L226 Difference]: Without dead ends: 135 [2024-11-09 18:21:42,994 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=230, Invalid=2320, Unknown=0, NotChecked=0, Total=2550 [2024-11-09 18:21:42,995 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 63 mSDsluCounter, 1165 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 18:21:42,995 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 1215 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1060 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 18:21:42,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-09 18:21:43,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 67. [2024-11-09 18:21:43,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 63 states have (on average 1.0793650793650793) internal successors, (68), 63 states have internal predecessors, (68), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 18:21:43,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 72 transitions. [2024-11-09 18:21:43,015 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 72 transitions. Word has length 61 [2024-11-09 18:21:43,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:21:43,016 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 72 transitions. [2024-11-09 18:21:43,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.9555555555555557) internal successors, (133), 45 states have internal predecessors, (133), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 18:21:43,016 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 72 transitions. [2024-11-09 18:21:43,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-09 18:21:43,016 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:21:43,016 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 7, 7, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:21:43,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-09 18:21:43,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:21:43,217 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:21:43,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:21:43,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1013444105, now seen corresponding path program 18 times [2024-11-09 18:21:43,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:21:43,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542489415] [2024-11-09 18:21:43,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:21:43,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:21:43,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:43,980 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 18:21:43,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:43,982 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 18:21:43,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:43,984 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:43,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:21:43,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542489415] [2024-11-09 18:21:43,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542489415] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:21:43,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755682798] [2024-11-09 18:21:43,985 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 18:21:43,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:21:43,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:21:43,987 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:21:43,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-09 18:21:44,546 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-09 18:21:44,546 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:21:44,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-09 18:21:44,553 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:21:44,715 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 34 treesize of output 13 [2024-11-09 18:21:44,755 INFO L349 Elim1Store]: treesize reduction 24, result has 35.1 percent of original size [2024-11-09 18:21:44,755 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 1 case distinctions, treesize of input 48 treesize of output 34 [2024-11-09 18:21:44,813 INFO L349 Elim1Store]: treesize reduction 28, result has 24.3 percent of original size [2024-11-09 18:21:44,813 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 2 case distinctions, treesize of input 63 treesize of output 33 [2024-11-09 18:21:45,248 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:45,248 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:21:45,643 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 88 treesize of output 86 [2024-11-09 18:21:45,659 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 3548662 treesize of output 3540470 [2024-11-09 18:21:45,736 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 176 treesize of output 128 [2024-11-09 18:21:46,015 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:46,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755682798] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:21:46,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:21:46,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 52 [2024-11-09 18:21:46,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285063793] [2024-11-09 18:21:46,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:21:46,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-09 18:21:46,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:21:46,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-09 18:21:46,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=2448, Unknown=0, NotChecked=0, Total=2652 [2024-11-09 18:21:46,017 INFO L87 Difference]: Start difference. First operand 67 states and 72 transitions. Second operand has 52 states, 52 states have (on average 2.826923076923077) internal successors, (147), 52 states have internal predecessors, (147), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 18:21:47,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:21:47,030 INFO L93 Difference]: Finished difference Result 162 states and 169 transitions. [2024-11-09 18:21:47,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-09 18:21:47,030 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.826923076923077) internal successors, (147), 52 states have internal predecessors, (147), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 61 [2024-11-09 18:21:47,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:21:47,031 INFO L225 Difference]: With dead ends: 162 [2024-11-09 18:21:47,032 INFO L226 Difference]: Without dead ends: 159 [2024-11-09 18:21:47,033 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 691 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=392, Invalid=3898, Unknown=0, NotChecked=0, Total=4290 [2024-11-09 18:21:47,033 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 180 mSDsluCounter, 1140 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 18:21:47,034 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 1192 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 18:21:47,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-09 18:21:47,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 67. [2024-11-09 18:21:47,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 63 states have (on average 1.0793650793650793) internal successors, (68), 63 states have internal predecessors, (68), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 18:21:47,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 72 transitions. [2024-11-09 18:21:47,060 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 72 transitions. Word has length 61 [2024-11-09 18:21:47,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:21:47,060 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 72 transitions. [2024-11-09 18:21:47,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.826923076923077) internal successors, (147), 52 states have internal predecessors, (147), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 18:21:47,061 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 72 transitions. [2024-11-09 18:21:47,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-09 18:21:47,061 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:21:47,061 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 6, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:21:47,084 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-09 18:21:47,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:21:47,262 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:21:47,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:21:47,262 INFO L85 PathProgramCache]: Analyzing trace with hash 2054235592, now seen corresponding path program 19 times [2024-11-09 18:21:47,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:21:47,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192593891] [2024-11-09 18:21:47,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:21:47,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:21:47,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:48,250 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 18:21:48,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:48,252 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 18:21:48,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:48,254 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 166 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:48,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:21:48,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192593891] [2024-11-09 18:21:48,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192593891] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:21:48,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140668776] [2024-11-09 18:21:48,254 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 18:21:48,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:21:48,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:21:48,255 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:21:48,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-09 18:21:48,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:48,387 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-09 18:21:48,390 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:21:48,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 19 [2024-11-09 18:21:48,566 INFO L349 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2024-11-09 18:21:48,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 27 [2024-11-09 18:21:48,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 27 [2024-11-09 18:21:48,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:21:48,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 23 [2024-11-09 18:21:49,164 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 18:21:49,165 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:21:49,836 INFO L349 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2024-11-09 18:21:49,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 82 [2024-11-09 18:21:49,960 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 166 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:49,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140668776] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:21:49,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:21:49,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 22, 19] total 53 [2024-11-09 18:21:49,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88217438] [2024-11-09 18:21:49,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:21:49,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-09 18:21:49,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:21:49,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-09 18:21:49,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=2549, Unknown=0, NotChecked=0, Total=2756 [2024-11-09 18:21:49,963 INFO L87 Difference]: Start difference. First operand 67 states and 72 transitions. Second operand has 53 states, 53 states have (on average 2.8679245283018866) internal successors, (152), 52 states have internal predecessors, (152), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 18:21:51,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:21:51,130 INFO L93 Difference]: Finished difference Result 144 states and 149 transitions. [2024-11-09 18:21:51,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-09 18:21:51,130 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.8679245283018866) internal successors, (152), 52 states have internal predecessors, (152), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 63 [2024-11-09 18:21:51,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:21:51,131 INFO L225 Difference]: With dead ends: 144 [2024-11-09 18:21:51,131 INFO L226 Difference]: Without dead ends: 141 [2024-11-09 18:21:51,136 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1015 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=442, Invalid=4814, Unknown=0, NotChecked=0, Total=5256 [2024-11-09 18:21:51,136 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 174 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 18:21:51,137 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 900 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 18:21:51,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-09 18:21:51,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 72. [2024-11-09 18:21:51,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 68 states have (on average 1.0735294117647058) internal successors, (73), 68 states have internal predecessors, (73), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 18:21:51,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 77 transitions. [2024-11-09 18:21:51,164 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 77 transitions. Word has length 63 [2024-11-09 18:21:51,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:21:51,164 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 77 transitions. [2024-11-09 18:21:51,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.8679245283018866) internal successors, (152), 52 states have internal predecessors, (152), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 18:21:51,164 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 77 transitions. [2024-11-09 18:21:51,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-09 18:21:51,165 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:21:51,165 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:21:51,179 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-09 18:21:51,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-09 18:21:51,365 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:21:51,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:21:51,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1665938494, now seen corresponding path program 20 times [2024-11-09 18:21:51,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:21:51,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583676433] [2024-11-09 18:21:51,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:21:51,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:21:51,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:52,045 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 18:21:52,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:52,047 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 18:21:52,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:52,048 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 177 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:52,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:21:52,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583676433] [2024-11-09 18:21:52,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583676433] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:21:52,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890478289] [2024-11-09 18:21:52,049 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:21:52,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:21:52,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:21:52,050 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:21:52,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-09 18:21:52,201 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:21:52,201 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:21:52,209 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-09 18:21:52,211 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:21:52,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 11 [2024-11-09 18:21:52,894 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 180 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 18:21:52,894 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:21:53,202 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 41 treesize of output 39 [2024-11-09 18:21:53,206 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 214 treesize of output 206 [2024-11-09 18:21:53,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2024-11-09 18:21:53,510 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 177 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:53,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890478289] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:21:53,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:21:53,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 23, 20] total 56 [2024-11-09 18:21:53,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762239562] [2024-11-09 18:21:53,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:21:53,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-09 18:21:53,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:21:53,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-09 18:21:53,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=2883, Unknown=0, NotChecked=0, Total=3080 [2024-11-09 18:21:53,513 INFO L87 Difference]: Start difference. First operand 72 states and 77 transitions. Second operand has 56 states, 56 states have (on average 2.7857142857142856) internal successors, (156), 55 states have internal predecessors, (156), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 18:21:54,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:21:54,661 INFO L93 Difference]: Finished difference Result 146 states and 151 transitions. [2024-11-09 18:21:54,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-09 18:21:54,661 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.7857142857142856) internal successors, (156), 55 states have internal predecessors, (156), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 65 [2024-11-09 18:21:54,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:21:54,662 INFO L225 Difference]: With dead ends: 146 [2024-11-09 18:21:54,662 INFO L226 Difference]: Without dead ends: 143 [2024-11-09 18:21:54,663 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1022 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=361, Invalid=5041, Unknown=0, NotChecked=0, Total=5402 [2024-11-09 18:21:54,663 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 107 mSDsluCounter, 1644 mSDsCounter, 0 mSdLazyCounter, 1801 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 1818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 18:21:54,663 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 1698 Invalid, 1818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1801 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 18:21:54,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-09 18:21:54,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 69. [2024-11-09 18:21:54,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 65 states have (on average 1.0615384615384615) internal successors, (69), 65 states have internal predecessors, (69), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 18:21:54,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2024-11-09 18:21:54,687 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 65 [2024-11-09 18:21:54,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:21:54,687 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2024-11-09 18:21:54,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.7857142857142856) internal successors, (156), 55 states have internal predecessors, (156), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 18:21:54,687 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2024-11-09 18:21:54,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-09 18:21:54,687 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:21:54,687 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 6, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:21:54,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-09 18:21:54,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-09 18:21:54,888 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:21:54,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:21:54,888 INFO L85 PathProgramCache]: Analyzing trace with hash 484767631, now seen corresponding path program 21 times [2024-11-09 18:21:54,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:21:54,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502297354] [2024-11-09 18:21:54,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:21:54,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:21:54,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:55,930 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 18:21:55,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:55,932 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 18:21:55,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:55,934 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:55,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:21:55,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502297354] [2024-11-09 18:21:55,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502297354] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:21:55,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102959371] [2024-11-09 18:21:55,935 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:21:55,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:21:55,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:21:55,937 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:21:55,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-09 18:21:56,315 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-09 18:21:56,315 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:21:56,318 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-09 18:21:56,321 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:21:56,335 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 30 treesize of output 19 [2024-11-09 18:21:56,379 INFO L349 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2024-11-09 18:21:56,380 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 1 case distinctions, treesize of input 50 treesize of output 27 [2024-11-09 18:21:56,426 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 27 [2024-11-09 18:21:56,480 INFO L349 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2024-11-09 18:21:56,480 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 1 case distinctions, treesize of input 54 treesize of output 31 [2024-11-09 18:21:56,535 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 57 treesize of output 30 [2024-11-09 18:21:57,581 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:21:57,581 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:21:58,509 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:21:58,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 121 treesize of output 116 [2024-11-09 18:21:58,513 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 103 treesize of output 101 [2024-11-09 18:21:58,600 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 55984086 treesize of output 55967702 [2024-11-09 18:22:00,239 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:22:00,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102959371] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:22:00,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:22:00,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21, 21] total 56 [2024-11-09 18:22:00,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161218848] [2024-11-09 18:22:00,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:22:00,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-09 18:22:00,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:22:00,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-09 18:22:00,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=2735, Unknown=0, NotChecked=0, Total=3080 [2024-11-09 18:22:00,242 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand has 56 states, 56 states have (on average 2.9107142857142856) internal successors, (163), 56 states have internal predecessors, (163), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 18:22:05,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:22:05,748 INFO L93 Difference]: Finished difference Result 244 states and 260 transitions. [2024-11-09 18:22:05,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-11-09 18:22:05,749 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.9107142857142856) internal successors, (163), 56 states have internal predecessors, (163), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 67 [2024-11-09 18:22:05,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:22:05,750 INFO L225 Difference]: With dead ends: 244 [2024-11-09 18:22:05,750 INFO L226 Difference]: Without dead ends: 241 [2024-11-09 18:22:05,752 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3255 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=1867, Invalid=11473, Unknown=0, NotChecked=0, Total=13340 [2024-11-09 18:22:05,752 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 296 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 1301 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 1341 SdHoareTripleChecker+Invalid, 1353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 18:22:05,752 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 1341 Invalid, 1353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1301 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 18:22:05,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2024-11-09 18:22:05,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 152. [2024-11-09 18:22:05,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 148 states have (on average 1.0405405405405406) internal successors, (154), 148 states have internal predecessors, (154), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 18:22:05,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 158 transitions. [2024-11-09 18:22:05,832 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 158 transitions. Word has length 67 [2024-11-09 18:22:05,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:22:05,832 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 158 transitions. [2024-11-09 18:22:05,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.9107142857142856) internal successors, (163), 56 states have internal predecessors, (163), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 18:22:05,832 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 158 transitions. [2024-11-09 18:22:05,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-09 18:22:05,833 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:22:05,833 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:22:05,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-09 18:22:06,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:22:06,034 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:22:06,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:22:06,034 INFO L85 PathProgramCache]: Analyzing trace with hash 323816710, now seen corresponding path program 22 times [2024-11-09 18:22:06,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:22:06,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001262330] [2024-11-09 18:22:06,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:22:06,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:22:06,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:22:06,926 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 18:22:06,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:22:06,928 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 18:22:06,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:22:06,929 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:22:06,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:22:06,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001262330] [2024-11-09 18:22:06,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001262330] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:22:06,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105650065] [2024-11-09 18:22:06,930 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 18:22:06,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:22:06,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:22:06,932 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:22:06,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-09 18:22:07,373 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 18:22:07,373 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:22:07,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-09 18:22:07,380 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:22:07,427 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 30 treesize of output 19 [2024-11-09 18:22:07,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:22:07,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 23 [2024-11-09 18:22:07,945 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:22:07,945 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:22:08,389 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-09 18:22:08,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 44 [2024-11-09 18:22:08,572 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:22:08,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105650065] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:22:08,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:22:08,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 50 [2024-11-09 18:22:08,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638402743] [2024-11-09 18:22:08,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:22:08,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-09 18:22:08,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:22:08,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-09 18:22:08,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=2266, Unknown=0, NotChecked=0, Total=2450 [2024-11-09 18:22:08,575 INFO L87 Difference]: Start difference. First operand 152 states and 158 transitions. Second operand has 50 states, 50 states have (on average 2.98) internal successors, (149), 50 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 18:22:09,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:22:09,433 INFO L93 Difference]: Finished difference Result 260 states and 267 transitions. [2024-11-09 18:22:09,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-09 18:22:09,434 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.98) internal successors, (149), 50 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 67 [2024-11-09 18:22:09,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:22:09,436 INFO L225 Difference]: With dead ends: 260 [2024-11-09 18:22:09,436 INFO L226 Difference]: Without dead ends: 257 [2024-11-09 18:22:09,436 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=251, Invalid=2829, Unknown=0, NotChecked=0, Total=3080 [2024-11-09 18:22:09,437 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 66 mSDsluCounter, 1226 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 1281 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 18:22:09,437 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 1281 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1165 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 18:22:09,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2024-11-09 18:22:09,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 119. [2024-11-09 18:22:09,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 115 states have (on average 1.0521739130434782) internal successors, (121), 115 states have internal predecessors, (121), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 18:22:09,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 125 transitions. [2024-11-09 18:22:09,513 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 125 transitions. Word has length 67 [2024-11-09 18:22:09,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:22:09,514 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 125 transitions. [2024-11-09 18:22:09,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.98) internal successors, (149), 50 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 18:22:09,514 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 125 transitions. [2024-11-09 18:22:09,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-09 18:22:09,515 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:22:09,515 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:22:09,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-09 18:22:09,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:22:09,716 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:22:09,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:22:09,716 INFO L85 PathProgramCache]: Analyzing trace with hash -2126043836, now seen corresponding path program 23 times [2024-11-09 18:22:09,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:22:09,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204853040] [2024-11-09 18:22:09,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:22:09,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:22:09,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:22:10,477 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 18:22:10,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:22:10,480 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 18:22:10,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:22:10,482 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 226 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:22:10,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:22:10,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204853040] [2024-11-09 18:22:10,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204853040] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:22:10,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342382290] [2024-11-09 18:22:10,483 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 18:22:10,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:22:10,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:22:10,485 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:22:10,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-09 18:22:10,890 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-09 18:22:10,891 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:22:10,894 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-09 18:22:10,897 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:22:10,959 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 30 treesize of output 11 [2024-11-09 18:22:11,358 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 226 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:22:11,358 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:22:11,697 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 41 treesize of output 39 [2024-11-09 18:22:11,699 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 94 treesize of output 90 [2024-11-09 18:22:11,701 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 44 treesize of output 32 [2024-11-09 18:22:11,946 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 226 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:22:11,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342382290] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:22:11,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:22:11,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 50 [2024-11-09 18:22:11,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947087606] [2024-11-09 18:22:11,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:22:11,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-09 18:22:11,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:22:11,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-09 18:22:11,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=2281, Unknown=0, NotChecked=0, Total=2450 [2024-11-09 18:22:11,949 INFO L87 Difference]: Start difference. First operand 119 states and 125 transitions. Second operand has 50 states, 50 states have (on average 3.04) internal successors, (152), 50 states have internal predecessors, (152), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 18:22:12,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:22:12,834 INFO L93 Difference]: Finished difference Result 237 states and 243 transitions. [2024-11-09 18:22:12,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-09 18:22:12,835 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.04) internal successors, (152), 50 states have internal predecessors, (152), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 71 [2024-11-09 18:22:12,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:22:12,836 INFO L225 Difference]: With dead ends: 237 [2024-11-09 18:22:12,836 INFO L226 Difference]: Without dead ends: 234 [2024-11-09 18:22:12,837 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=180, Invalid=2370, Unknown=0, NotChecked=0, Total=2550 [2024-11-09 18:22:12,837 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 47 mSDsluCounter, 1816 mSDsCounter, 0 mSdLazyCounter, 1812 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 1880 SdHoareTripleChecker+Invalid, 1823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 18:22:12,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 1880 Invalid, 1823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1812 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 18:22:12,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2024-11-09 18:22:12,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 116. [2024-11-09 18:22:12,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 112 states have (on average 1.0446428571428572) internal successors, (117), 112 states have internal predecessors, (117), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 18:22:12,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 121 transitions. [2024-11-09 18:22:12,904 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 121 transitions. Word has length 71 [2024-11-09 18:22:12,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:22:12,904 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 121 transitions. [2024-11-09 18:22:12,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.04) internal successors, (152), 50 states have internal predecessors, (152), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 18:22:12,904 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 121 transitions. [2024-11-09 18:22:12,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-09 18:22:12,905 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:22:12,905 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 7, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:22:12,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-09 18:22:13,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-09 18:22:13,106 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:22:13,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:22:13,106 INFO L85 PathProgramCache]: Analyzing trace with hash 479347797, now seen corresponding path program 24 times [2024-11-09 18:22:13,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:22:13,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149681736] [2024-11-09 18:22:13,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:22:13,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:22:13,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:22:14,363 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 18:22:14,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:22:14,365 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 18:22:14,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:22:14,366 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 252 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:22:14,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:22:14,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149681736] [2024-11-09 18:22:14,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149681736] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:22:14,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986879667] [2024-11-09 18:22:14,367 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 18:22:14,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:22:14,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:22:14,368 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:22:14,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-09 18:22:14,700 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-09 18:22:14,700 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:22:14,703 INFO L255 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-09 18:22:14,706 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:22:14,725 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 30 treesize of output 19 [2024-11-09 18:22:14,778 INFO L349 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2024-11-09 18:22:14,778 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 1 case distinctions, treesize of input 50 treesize of output 27 [2024-11-09 18:22:14,823 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 27 [2024-11-09 18:22:14,890 INFO L349 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2024-11-09 18:22:14,891 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 1 case distinctions, treesize of input 54 treesize of output 31 [2024-11-09 18:22:14,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 23 [2024-11-09 18:22:15,671 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 252 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:22:15,672 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:22:16,509 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-09 18:22:16,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 92 [2024-11-09 18:22:16,600 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 252 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:22:16,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986879667] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:22:16,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:22:16,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 57 [2024-11-09 18:22:16,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971226816] [2024-11-09 18:22:16,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:22:16,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-09 18:22:16,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:22:16,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-09 18:22:16,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=2968, Unknown=0, NotChecked=0, Total=3192 [2024-11-09 18:22:16,603 INFO L87 Difference]: Start difference. First operand 116 states and 121 transitions. Second operand has 57 states, 57 states have (on average 3.0701754385964914) internal successors, (175), 57 states have internal predecessors, (175), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 18:22:18,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:22:18,002 INFO L93 Difference]: Finished difference Result 252 states and 258 transitions. [2024-11-09 18:22:18,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-09 18:22:18,002 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 3.0701754385964914) internal successors, (175), 57 states have internal predecessors, (175), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 73 [2024-11-09 18:22:18,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:22:18,003 INFO L225 Difference]: With dead ends: 252 [2024-11-09 18:22:18,003 INFO L226 Difference]: Without dead ends: 249 [2024-11-09 18:22:18,004 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 977 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=382, Invalid=4448, Unknown=0, NotChecked=0, Total=4830 [2024-11-09 18:22:18,004 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 161 mSDsluCounter, 1467 mSDsCounter, 0 mSdLazyCounter, 1319 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 1517 SdHoareTripleChecker+Invalid, 1343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 18:22:18,004 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 1517 Invalid, 1343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1319 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 18:22:18,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2024-11-09 18:22:18,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 158. [2024-11-09 18:22:18,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 154 states have (on average 1.0454545454545454) internal successors, (161), 154 states have internal predecessors, (161), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 18:22:18,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 165 transitions. [2024-11-09 18:22:18,113 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 165 transitions. Word has length 73 [2024-11-09 18:22:18,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:22:18,113 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 165 transitions. [2024-11-09 18:22:18,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 3.0701754385964914) internal successors, (175), 57 states have internal predecessors, (175), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 18:22:18,114 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 165 transitions. [2024-11-09 18:22:18,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-09 18:22:18,114 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:22:18,114 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:22:18,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-09 18:22:18,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-09 18:22:18,315 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:22:18,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:22:18,315 INFO L85 PathProgramCache]: Analyzing trace with hash -847985076, now seen corresponding path program 25 times [2024-11-09 18:22:18,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:22:18,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298342408] [2024-11-09 18:22:18,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:22:18,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:22:18,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat