./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-32.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-32.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4c0ba744090c8142a33dba842cf98027b64f47a633efca28c0047c8830fe4fa5 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 00:34:05,944 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 00:34:06,009 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 00:34:06,013 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 00:34:06,014 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 00:34:06,032 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 00:34:06,032 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 00:34:06,033 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 00:34:06,033 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 00:34:06,034 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 00:34:06,034 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 00:34:06,034 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 00:34:06,035 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 00:34:06,035 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 00:34:06,036 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 00:34:06,036 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 00:34:06,036 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 00:34:06,037 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 00:34:06,037 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 00:34:06,037 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 00:34:06,038 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 00:34:06,038 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 00:34:06,038 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 00:34:06,039 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 00:34:06,039 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 00:34:06,039 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 00:34:06,039 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 00:34:06,039 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 00:34:06,040 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 00:34:06,040 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 00:34:06,040 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 00:34:06,040 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 00:34:06,041 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 00:34:06,041 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 00:34:06,041 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 00:34:06,042 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 00:34:06,042 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 00:34:06,042 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 00:34:06,043 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 00:34:06,043 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 00:34:06,043 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 00:34:06,045 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 00:34:06,045 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c0ba744090c8142a33dba842cf98027b64f47a633efca28c0047c8830fe4fa5 [2024-11-19 00:34:06,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 00:34:06,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 00:34:06,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 00:34:06,339 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 00:34:06,339 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 00:34:06,340 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-32.i [2024-11-19 00:34:07,775 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 00:34:08,011 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 00:34:08,012 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-32.i [2024-11-19 00:34:08,023 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72ecfc68f/ad4d74e407f24933907647779370c32f/FLAGe5da1cf44 [2024-11-19 00:34:08,037 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72ecfc68f/ad4d74e407f24933907647779370c32f [2024-11-19 00:34:08,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 00:34:08,041 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 00:34:08,042 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 00:34:08,043 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 00:34:08,049 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 00:34:08,049 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 12:34:08" (1/1) ... [2024-11-19 00:34:08,050 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60e52497 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:34:08, skipping insertion in model container [2024-11-19 00:34:08,051 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 12:34:08" (1/1) ... [2024-11-19 00:34:08,084 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 00:34:08,272 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-32.i[916,929] [2024-11-19 00:34:08,362 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 00:34:08,377 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 00:34:08,394 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-32.i[916,929] [2024-11-19 00:34:08,451 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 00:34:08,478 INFO L204 MainTranslator]: Completed translation [2024-11-19 00:34:08,478 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:34:08 WrapperNode [2024-11-19 00:34:08,478 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 00:34:08,480 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 00:34:08,480 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 00:34:08,480 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 00:34:08,487 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:34:08" (1/1) ... [2024-11-19 00:34:08,501 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:34:08" (1/1) ... [2024-11-19 00:34:08,540 INFO L138 Inliner]: procedures = 26, calls = 158, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 440 [2024-11-19 00:34:08,540 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 00:34:08,541 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 00:34:08,541 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 00:34:08,541 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 00:34:08,559 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:34:08" (1/1) ... [2024-11-19 00:34:08,560 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:34:08" (1/1) ... [2024-11-19 00:34:08,575 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:34:08" (1/1) ... [2024-11-19 00:34:08,605 INFO L175 MemorySlicer]: Split 124 memory accesses to 6 slices as follows [2, 14, 23, 8, 24, 53]. 43 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 2, 3, 1, 2, 4]. The 15 writes are split as follows [0, 2, 5, 2, 2, 4]. [2024-11-19 00:34:08,605 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:34:08" (1/1) ... [2024-11-19 00:34:08,606 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:34:08" (1/1) ... [2024-11-19 00:34:08,634 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:34:08" (1/1) ... [2024-11-19 00:34:08,641 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:34:08" (1/1) ... [2024-11-19 00:34:08,648 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:34:08" (1/1) ... [2024-11-19 00:34:08,651 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:34:08" (1/1) ... [2024-11-19 00:34:08,662 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 00:34:08,666 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 00:34:08,666 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 00:34:08,666 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 00:34:08,667 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:34:08" (1/1) ... [2024-11-19 00:34:08,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 00:34:08,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:34:08,711 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 00:34:08,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 00:34:08,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 00:34:08,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 00:34:08,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 00:34:08,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 00:34:08,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-19 00:34:08,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-19 00:34:08,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-19 00:34:08,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 00:34:08,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 00:34:08,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 00:34:08,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-19 00:34:08,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-19 00:34:08,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-19 00:34:08,768 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-19 00:34:08,769 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-19 00:34:08,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 00:34:08,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 00:34:08,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 00:34:08,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-19 00:34:08,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-19 00:34:08,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-19 00:34:08,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 00:34:08,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 00:34:08,917 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 00:34:08,920 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 00:34:09,490 INFO L? ?]: Removed 107 outVars from TransFormulas that were not future-live. [2024-11-19 00:34:09,490 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 00:34:09,511 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 00:34:09,511 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 00:34:09,512 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 12:34:09 BoogieIcfgContainer [2024-11-19 00:34:09,512 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 00:34:09,514 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 00:34:09,515 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 00:34:09,519 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 00:34:09,519 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 12:34:08" (1/3) ... [2024-11-19 00:34:09,520 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55ff7115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 12:34:09, skipping insertion in model container [2024-11-19 00:34:09,520 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:34:08" (2/3) ... [2024-11-19 00:34:09,520 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55ff7115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 12:34:09, skipping insertion in model container [2024-11-19 00:34:09,520 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 12:34:09" (3/3) ... [2024-11-19 00:34:09,521 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-32.i [2024-11-19 00:34:09,537 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 00:34:09,538 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 00:34:09,600 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 00:34:09,606 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;@481caa57, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 00:34:09,606 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 00:34:09,611 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 78 states have (on average 1.3717948717948718) internal successors, (107), 79 states have internal predecessors, (107), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-19 00:34:09,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-19 00:34:09,622 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:34:09,623 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:34:09,623 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:34:09,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:34:09,628 INFO L85 PathProgramCache]: Analyzing trace with hash -2092387816, now seen corresponding path program 1 times [2024-11-19 00:34:09,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:34:09,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121738249] [2024-11-19 00:34:09,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:34:09,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:34:09,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:34:09,979 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2024-11-19 00:34:09,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:34:09,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121738249] [2024-11-19 00:34:09,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121738249] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:34:09,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501993801] [2024-11-19 00:34:09,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:34:09,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:34:09,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:34:09,986 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 00:34:09,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 00:34:10,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:34:10,183 INFO L255 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-19 00:34:10,198 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:34:10,238 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2024-11-19 00:34:10,238 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 00:34:10,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501993801] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:34:10,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 00:34:10,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-19 00:34:10,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662429875] [2024-11-19 00:34:10,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:34:10,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 00:34:10,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:34:10,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 00:34:10,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 00:34:10,274 INFO L87 Difference]: Start difference. First operand has 99 states, 78 states have (on average 1.3717948717948718) internal successors, (107), 79 states have internal predecessors, (107), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-19 00:34:10,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:34:10,302 INFO L93 Difference]: Finished difference Result 191 states and 298 transitions. [2024-11-19 00:34:10,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 00:34:10,304 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 129 [2024-11-19 00:34:10,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:34:10,314 INFO L225 Difference]: With dead ends: 191 [2024-11-19 00:34:10,315 INFO L226 Difference]: Without dead ends: 95 [2024-11-19 00:34:10,319 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 00:34:10,322 INFO L432 NwaCegarLoop]: 132 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, 132 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 00:34:10,323 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 00:34:10,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-19 00:34:10,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-11-19 00:34:10,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 75 states have (on average 1.28) internal successors, (96), 75 states have internal predecessors, (96), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-19 00:34:10,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 132 transitions. [2024-11-19 00:34:10,377 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 132 transitions. Word has length 129 [2024-11-19 00:34:10,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:34:10,377 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 132 transitions. [2024-11-19 00:34:10,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-19 00:34:10,378 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 132 transitions. [2024-11-19 00:34:10,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-19 00:34:10,382 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:34:10,382 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:34:10,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 00:34:10,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-19 00:34:10,584 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:34:10,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:34:10,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1151857908, now seen corresponding path program 1 times [2024-11-19 00:34:10,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:34:10,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539707773] [2024-11-19 00:34:10,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:34:10,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:34:10,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:34:11,068 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-19 00:34:11,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:34:11,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539707773] [2024-11-19 00:34:11,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539707773] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:34:11,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:34:11,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 00:34:11,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559585194] [2024-11-19 00:34:11,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:34:11,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 00:34:11,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:34:11,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 00:34:11,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 00:34:11,075 INFO L87 Difference]: Start difference. First operand 95 states and 132 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:34:11,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:34:11,252 INFO L93 Difference]: Finished difference Result 318 states and 444 transitions. [2024-11-19 00:34:11,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 00:34:11,252 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 129 [2024-11-19 00:34:11,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:34:11,255 INFO L225 Difference]: With dead ends: 318 [2024-11-19 00:34:11,256 INFO L226 Difference]: Without dead ends: 226 [2024-11-19 00:34:11,257 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 00:34:11,258 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 213 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 00:34:11,258 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 368 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 00:34:11,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2024-11-19 00:34:11,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 193. [2024-11-19 00:34:11,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 154 states have (on average 1.2857142857142858) internal successors, (198), 154 states have internal predecessors, (198), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-19 00:34:11,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 270 transitions. [2024-11-19 00:34:11,296 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 270 transitions. Word has length 129 [2024-11-19 00:34:11,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:34:11,297 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 270 transitions. [2024-11-19 00:34:11,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:34:11,298 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 270 transitions. [2024-11-19 00:34:11,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-19 00:34:11,300 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:34:11,300 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:34:11,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 00:34:11,301 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:34:11,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:34:11,301 INFO L85 PathProgramCache]: Analyzing trace with hash 732352654, now seen corresponding path program 1 times [2024-11-19 00:34:11,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:34:11,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517941065] [2024-11-19 00:34:11,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:34:11,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:34:11,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:34:12,980 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-19 00:34:12,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:34:12,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517941065] [2024-11-19 00:34:12,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517941065] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:34:12,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:34:12,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-19 00:34:12,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249577411] [2024-11-19 00:34:12,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:34:12,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 00:34:12,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:34:12,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 00:34:12,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-19 00:34:12,986 INFO L87 Difference]: Start difference. First operand 193 states and 270 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 12 states have internal predecessors, (50), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-19 00:34:13,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:34:13,563 INFO L93 Difference]: Finished difference Result 543 states and 762 transitions. [2024-11-19 00:34:13,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 00:34:13,564 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 12 states have internal predecessors, (50), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 137 [2024-11-19 00:34:13,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:34:13,571 INFO L225 Difference]: With dead ends: 543 [2024-11-19 00:34:13,572 INFO L226 Difference]: Without dead ends: 353 [2024-11-19 00:34:13,573 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2024-11-19 00:34:13,577 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 104 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 00:34:13,578 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 835 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 00:34:13,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2024-11-19 00:34:13,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 349. [2024-11-19 00:34:13,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 284 states have (on average 1.2992957746478873) internal successors, (369), 286 states have internal predecessors, (369), 60 states have call successors, (60), 4 states have call predecessors, (60), 4 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-19 00:34:13,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 489 transitions. [2024-11-19 00:34:13,615 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 489 transitions. Word has length 137 [2024-11-19 00:34:13,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:34:13,618 INFO L471 AbstractCegarLoop]: Abstraction has 349 states and 489 transitions. [2024-11-19 00:34:13,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 12 states have internal predecessors, (50), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-19 00:34:13,618 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 489 transitions. [2024-11-19 00:34:13,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-19 00:34:13,620 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:34:13,620 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:34:13,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 00:34:13,621 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:34:13,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:34:13,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1144659733, now seen corresponding path program 1 times [2024-11-19 00:34:13,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:34:13,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838397955] [2024-11-19 00:34:13,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:34:13,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:34:13,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:34:16,441 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-19 00:34:16,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:34:16,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838397955] [2024-11-19 00:34:16,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838397955] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:34:16,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:34:16,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-19 00:34:16,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621437914] [2024-11-19 00:34:16,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:34:16,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-19 00:34:16,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:34:16,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-19 00:34:16,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2024-11-19 00:34:16,445 INFO L87 Difference]: Start difference. First operand 349 states and 489 transitions. Second operand has 19 states, 15 states have (on average 3.466666666666667) internal successors, (52), 19 states have internal predecessors, (52), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-19 00:34:18,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:34:18,747 INFO L93 Difference]: Finished difference Result 860 states and 1188 transitions. [2024-11-19 00:34:18,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-19 00:34:18,748 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 3.466666666666667) internal successors, (52), 19 states have internal predecessors, (52), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) Word has length 139 [2024-11-19 00:34:18,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:34:18,757 INFO L225 Difference]: With dead ends: 860 [2024-11-19 00:34:18,757 INFO L226 Difference]: Without dead ends: 514 [2024-11-19 00:34:18,761 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=138, Invalid=792, Unknown=0, NotChecked=0, Total=930 [2024-11-19 00:34:18,763 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 574 mSDsluCounter, 1374 mSDsCounter, 0 mSdLazyCounter, 1600 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 1701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-19 00:34:18,764 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [578 Valid, 1507 Invalid, 1701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1600 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-19 00:34:18,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2024-11-19 00:34:18,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 447. [2024-11-19 00:34:18,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 359 states have (on average 1.2785515320334262) internal successors, (459), 363 states have internal predecessors, (459), 80 states have call successors, (80), 7 states have call predecessors, (80), 7 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-19 00:34:18,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 619 transitions. [2024-11-19 00:34:18,824 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 619 transitions. Word has length 139 [2024-11-19 00:34:18,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:34:18,825 INFO L471 AbstractCegarLoop]: Abstraction has 447 states and 619 transitions. [2024-11-19 00:34:18,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 3.466666666666667) internal successors, (52), 19 states have internal predecessors, (52), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-19 00:34:18,825 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 619 transitions. [2024-11-19 00:34:18,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-19 00:34:18,828 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:34:18,828 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:34:18,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 00:34:18,828 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:34:18,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:34:18,829 INFO L85 PathProgramCache]: Analyzing trace with hash 982324889, now seen corresponding path program 1 times [2024-11-19 00:34:18,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:34:18,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372126297] [2024-11-19 00:34:18,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:34:18,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:34:18,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:34:19,029 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2024-11-19 00:34:19,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:34:19,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372126297] [2024-11-19 00:34:19,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372126297] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:34:19,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234432090] [2024-11-19 00:34:19,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:34:19,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:34:19,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:34:19,033 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 00:34:19,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 00:34:19,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:34:19,203 INFO L255 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 00:34:19,208 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:34:19,259 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-19 00:34:19,260 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 00:34:19,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234432090] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:34:19,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 00:34:19,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2024-11-19 00:34:19,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987768450] [2024-11-19 00:34:19,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:34:19,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 00:34:19,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:34:19,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 00:34:19,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 00:34:19,266 INFO L87 Difference]: Start difference. First operand 447 states and 619 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:34:19,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:34:19,323 INFO L93 Difference]: Finished difference Result 889 states and 1230 transitions. [2024-11-19 00:34:19,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 00:34:19,324 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 139 [2024-11-19 00:34:19,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:34:19,328 INFO L225 Difference]: With dead ends: 889 [2024-11-19 00:34:19,328 INFO L226 Difference]: Without dead ends: 462 [2024-11-19 00:34:19,330 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 00:34:19,331 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 0 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 00:34:19,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 500 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 00:34:19,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2024-11-19 00:34:19,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 462. [2024-11-19 00:34:19,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 374 states have (on average 1.267379679144385) internal successors, (474), 378 states have internal predecessors, (474), 80 states have call successors, (80), 7 states have call predecessors, (80), 7 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-19 00:34:19,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 634 transitions. [2024-11-19 00:34:19,377 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 634 transitions. Word has length 139 [2024-11-19 00:34:19,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:34:19,379 INFO L471 AbstractCegarLoop]: Abstraction has 462 states and 634 transitions. [2024-11-19 00:34:19,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:34:19,380 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 634 transitions. [2024-11-19 00:34:19,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-19 00:34:19,383 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:34:19,383 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:34:19,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 00:34:19,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:34:19,588 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:34:19,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:34:19,589 INFO L85 PathProgramCache]: Analyzing trace with hash -932708075, now seen corresponding path program 1 times [2024-11-19 00:34:19,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:34:19,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874798847] [2024-11-19 00:34:19,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:34:19,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:34:19,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:34:20,974 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-19 00:34:20,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:34:20,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874798847] [2024-11-19 00:34:20,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874798847] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:34:20,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:34:20,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-19 00:34:20,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457845147] [2024-11-19 00:34:20,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:34:20,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 00:34:20,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:34:20,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 00:34:20,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-19 00:34:20,979 INFO L87 Difference]: Start difference. First operand 462 states and 634 transitions. Second operand has 15 states, 12 states have (on average 4.333333333333333) internal successors, (52), 15 states have internal predecessors, (52), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-19 00:34:22,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:34:22,690 INFO L93 Difference]: Finished difference Result 989 states and 1346 transitions. [2024-11-19 00:34:22,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-19 00:34:22,690 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 4.333333333333333) internal successors, (52), 15 states have internal predecessors, (52), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 4 states have call successors, (18) Word has length 139 [2024-11-19 00:34:22,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:34:22,694 INFO L225 Difference]: With dead ends: 989 [2024-11-19 00:34:22,695 INFO L226 Difference]: Without dead ends: 547 [2024-11-19 00:34:22,696 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2024-11-19 00:34:22,697 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 314 mSDsluCounter, 1506 mSDsCounter, 0 mSdLazyCounter, 1176 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 1655 SdHoareTripleChecker+Invalid, 1205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-19 00:34:22,698 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 1655 Invalid, 1205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1176 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-19 00:34:22,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2024-11-19 00:34:22,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 379. [2024-11-19 00:34:22,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 312 states have (on average 1.2724358974358974) internal successors, (397), 314 states have internal predecessors, (397), 60 states have call successors, (60), 6 states have call predecessors, (60), 6 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-19 00:34:22,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 517 transitions. [2024-11-19 00:34:22,743 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 517 transitions. Word has length 139 [2024-11-19 00:34:22,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:34:22,743 INFO L471 AbstractCegarLoop]: Abstraction has 379 states and 517 transitions. [2024-11-19 00:34:22,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 4.333333333333333) internal successors, (52), 15 states have internal predecessors, (52), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-19 00:34:22,744 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 517 transitions. [2024-11-19 00:34:22,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-19 00:34:22,746 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:34:22,746 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:34:22,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 00:34:22,747 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:34:22,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:34:22,747 INFO L85 PathProgramCache]: Analyzing trace with hash 905958465, now seen corresponding path program 1 times [2024-11-19 00:34:22,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:34:22,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368401711] [2024-11-19 00:34:22,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:34:22,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:34:22,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:34:24,454 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-19 00:34:24,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:34:24,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368401711] [2024-11-19 00:34:24,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368401711] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:34:24,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:34:24,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-19 00:34:24,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313649346] [2024-11-19 00:34:24,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:34:24,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 00:34:24,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:34:24,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 00:34:24,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2024-11-19 00:34:24,458 INFO L87 Difference]: Start difference. First operand 379 states and 517 transitions. Second operand has 16 states, 12 states have (on average 4.416666666666667) internal successors, (53), 16 states have internal predecessors, (53), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-19 00:34:26,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:34:26,322 INFO L93 Difference]: Finished difference Result 769 states and 1043 transitions. [2024-11-19 00:34:26,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-19 00:34:26,323 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 4.416666666666667) internal successors, (53), 16 states have internal predecessors, (53), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) Word has length 140 [2024-11-19 00:34:26,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:34:26,329 INFO L225 Difference]: With dead ends: 769 [2024-11-19 00:34:26,329 INFO L226 Difference]: Without dead ends: 596 [2024-11-19 00:34:26,330 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2024-11-19 00:34:26,331 INFO L432 NwaCegarLoop]: 168 mSDtfsCounter, 288 mSDsluCounter, 1399 mSDsCounter, 0 mSdLazyCounter, 1442 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 1567 SdHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-19 00:34:26,332 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 1567 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1442 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-19 00:34:26,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2024-11-19 00:34:26,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 519. [2024-11-19 00:34:26,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 420 states have (on average 1.2547619047619047) internal successors, (527), 425 states have internal predecessors, (527), 88 states have call successors, (88), 10 states have call predecessors, (88), 10 states have return successors, (88), 83 states have call predecessors, (88), 88 states have call successors, (88) [2024-11-19 00:34:26,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 703 transitions. [2024-11-19 00:34:26,404 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 703 transitions. Word has length 140 [2024-11-19 00:34:26,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:34:26,405 INFO L471 AbstractCegarLoop]: Abstraction has 519 states and 703 transitions. [2024-11-19 00:34:26,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 4.416666666666667) internal successors, (53), 16 states have internal predecessors, (53), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-19 00:34:26,405 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 703 transitions. [2024-11-19 00:34:26,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-19 00:34:26,409 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:34:26,409 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:34:26,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 00:34:26,409 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:34:26,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:34:26,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1228664258, now seen corresponding path program 1 times [2024-11-19 00:34:26,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:34:26,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592893178] [2024-11-19 00:34:26,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:34:26,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:34:26,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:34:26,964 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-19 00:34:26,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:34:26,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592893178] [2024-11-19 00:34:26,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592893178] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:34:26,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:34:26,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 00:34:26,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388414137] [2024-11-19 00:34:26,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:34:26,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 00:34:26,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:34:26,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 00:34:26,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-19 00:34:26,968 INFO L87 Difference]: Start difference. First operand 519 states and 703 transitions. Second operand has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-19 00:34:27,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:34:27,533 INFO L93 Difference]: Finished difference Result 1338 states and 1808 transitions. [2024-11-19 00:34:27,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 00:34:27,534 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 141 [2024-11-19 00:34:27,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:34:27,539 INFO L225 Difference]: With dead ends: 1338 [2024-11-19 00:34:27,539 INFO L226 Difference]: Without dead ends: 843 [2024-11-19 00:34:27,541 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-19 00:34:27,542 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 241 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 00:34:27,542 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 511 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 00:34:27,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2024-11-19 00:34:27,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 635. [2024-11-19 00:34:27,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 526 states have (on average 1.2718631178707225) internal successors, (669), 530 states have internal predecessors, (669), 98 states have call successors, (98), 10 states have call predecessors, (98), 10 states have return successors, (98), 94 states have call predecessors, (98), 98 states have call successors, (98) [2024-11-19 00:34:27,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 865 transitions. [2024-11-19 00:34:27,630 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 865 transitions. Word has length 141 [2024-11-19 00:34:27,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:34:27,630 INFO L471 AbstractCegarLoop]: Abstraction has 635 states and 865 transitions. [2024-11-19 00:34:27,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-19 00:34:27,631 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 865 transitions. [2024-11-19 00:34:27,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-19 00:34:27,632 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:34:27,632 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:34:27,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 00:34:27,633 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:34:27,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:34:27,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1911355907, now seen corresponding path program 1 times [2024-11-19 00:34:27,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:34:27,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58899664] [2024-11-19 00:34:27,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:34:27,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:34:27,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:34:28,116 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-19 00:34:28,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:34:28,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58899664] [2024-11-19 00:34:28,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58899664] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:34:28,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:34:28,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 00:34:28,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395370129] [2024-11-19 00:34:28,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:34:28,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 00:34:28,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:34:28,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 00:34:28,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 00:34:28,120 INFO L87 Difference]: Start difference. First operand 635 states and 865 transitions. Second operand has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-19 00:34:28,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:34:28,431 INFO L93 Difference]: Finished difference Result 1110 states and 1483 transitions. [2024-11-19 00:34:28,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 00:34:28,431 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 141 [2024-11-19 00:34:28,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:34:28,437 INFO L225 Difference]: With dead ends: 1110 [2024-11-19 00:34:28,437 INFO L226 Difference]: Without dead ends: 1108 [2024-11-19 00:34:28,438 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-19 00:34:28,438 INFO L432 NwaCegarLoop]: 154 mSDtfsCounter, 66 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 00:34:28,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 981 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 00:34:28,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2024-11-19 00:34:28,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 1100. [2024-11-19 00:34:28,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 914 states have (on average 1.2428884026258207) internal successors, (1136), 925 states have internal predecessors, (1136), 166 states have call successors, (166), 19 states have call predecessors, (166), 19 states have return successors, (166), 155 states have call predecessors, (166), 166 states have call successors, (166) [2024-11-19 00:34:28,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1468 transitions. [2024-11-19 00:34:28,540 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1468 transitions. Word has length 141 [2024-11-19 00:34:28,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:34:28,541 INFO L471 AbstractCegarLoop]: Abstraction has 1100 states and 1468 transitions. [2024-11-19 00:34:28,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-19 00:34:28,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1468 transitions. [2024-11-19 00:34:28,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-19 00:34:28,543 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:34:28,543 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:34:28,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 00:34:28,544 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:34:28,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:34:28,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1376374685, now seen corresponding path program 1 times [2024-11-19 00:34:28,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:34:28,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040344669] [2024-11-19 00:34:28,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:34:28,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:34:28,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:34:30,761 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-19 00:34:30,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:34:30,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040344669] [2024-11-19 00:34:30,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040344669] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:34:30,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:34:30,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-19 00:34:30,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523228431] [2024-11-19 00:34:30,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:34:30,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 00:34:30,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:34:30,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 00:34:30,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2024-11-19 00:34:30,764 INFO L87 Difference]: Start difference. First operand 1100 states and 1468 transitions. Second operand has 20 states, 16 states have (on average 3.375) internal successors, (54), 20 states have internal predecessors, (54), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-19 00:34:35,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-19 00:34:38,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:34:38,344 INFO L93 Difference]: Finished difference Result 2384 states and 3168 transitions. [2024-11-19 00:34:38,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-19 00:34:38,344 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 3.375) internal successors, (54), 20 states have internal predecessors, (54), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) Word has length 141 [2024-11-19 00:34:38,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:34:38,351 INFO L225 Difference]: With dead ends: 2384 [2024-11-19 00:34:38,351 INFO L226 Difference]: Without dead ends: 1287 [2024-11-19 00:34:38,354 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=160, Invalid=896, Unknown=0, NotChecked=0, Total=1056 [2024-11-19 00:34:38,355 INFO L432 NwaCegarLoop]: 202 mSDtfsCounter, 380 mSDsluCounter, 1821 mSDsCounter, 0 mSdLazyCounter, 2245 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 2023 SdHoareTripleChecker+Invalid, 2330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2024-11-19 00:34:38,355 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 2023 Invalid, 2330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 2245 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2024-11-19 00:34:38,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2024-11-19 00:34:38,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 1105. [2024-11-19 00:34:38,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1105 states, 919 states have (on average 1.2415669205658324) internal successors, (1141), 930 states have internal predecessors, (1141), 166 states have call successors, (166), 19 states have call predecessors, (166), 19 states have return successors, (166), 155 states have call predecessors, (166), 166 states have call successors, (166) [2024-11-19 00:34:38,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 1473 transitions. [2024-11-19 00:34:38,469 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 1473 transitions. Word has length 141 [2024-11-19 00:34:38,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:34:38,473 INFO L471 AbstractCegarLoop]: Abstraction has 1105 states and 1473 transitions. [2024-11-19 00:34:38,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 3.375) internal successors, (54), 20 states have internal predecessors, (54), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-19 00:34:38,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 1473 transitions. [2024-11-19 00:34:38,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-19 00:34:38,475 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:34:38,476 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:34:38,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 00:34:38,476 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:34:38,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:34:38,477 INFO L85 PathProgramCache]: Analyzing trace with hash 331365611, now seen corresponding path program 1 times [2024-11-19 00:34:38,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:34:38,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992382170] [2024-11-19 00:34:38,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:34:38,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:34:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:34:40,262 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-19 00:34:40,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:34:40,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992382170] [2024-11-19 00:34:40,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992382170] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:34:40,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:34:40,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-19 00:34:40,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131907878] [2024-11-19 00:34:40,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:34:40,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 00:34:40,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:34:40,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 00:34:40,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2024-11-19 00:34:40,266 INFO L87 Difference]: Start difference. First operand 1105 states and 1473 transitions. Second operand has 16 states, 12 states have (on average 4.5) internal successors, (54), 16 states have internal predecessors, (54), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-19 00:34:42,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:34:42,554 INFO L93 Difference]: Finished difference Result 1912 states and 2544 transitions. [2024-11-19 00:34:42,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-19 00:34:42,555 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 4.5) internal successors, (54), 16 states have internal predecessors, (54), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) Word has length 141 [2024-11-19 00:34:42,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:34:42,562 INFO L225 Difference]: With dead ends: 1912 [2024-11-19 00:34:42,562 INFO L226 Difference]: Without dead ends: 1296 [2024-11-19 00:34:42,564 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2024-11-19 00:34:42,565 INFO L432 NwaCegarLoop]: 199 mSDtfsCounter, 291 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 1572 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 1937 SdHoareTripleChecker+Invalid, 1616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-19 00:34:42,565 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 1937 Invalid, 1616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1572 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-19 00:34:42,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1296 states. [2024-11-19 00:34:42,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1296 to 1054. [2024-11-19 00:34:42,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1054 states, 879 states have (on average 1.242320819112628) internal successors, (1092), 889 states have internal predecessors, (1092), 156 states have call successors, (156), 18 states have call predecessors, (156), 18 states have return successors, (156), 146 states have call predecessors, (156), 156 states have call successors, (156) [2024-11-19 00:34:42,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 1404 transitions. [2024-11-19 00:34:42,666 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 1404 transitions. Word has length 141 [2024-11-19 00:34:42,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:34:42,667 INFO L471 AbstractCegarLoop]: Abstraction has 1054 states and 1404 transitions. [2024-11-19 00:34:42,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 4.5) internal successors, (54), 16 states have internal predecessors, (54), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-19 00:34:42,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 1404 transitions. [2024-11-19 00:34:42,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-19 00:34:42,670 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:34:42,670 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:34:42,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 00:34:42,670 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:34:42,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:34:42,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1357578131, now seen corresponding path program 1 times [2024-11-19 00:34:42,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:34:42,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281435750] [2024-11-19 00:34:42,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:34:42,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:34:42,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:34:43,939 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-19 00:34:43,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:34:43,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281435750] [2024-11-19 00:34:43,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281435750] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:34:43,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:34:43,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-19 00:34:43,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359329793] [2024-11-19 00:34:43,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:34:43,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 00:34:43,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:34:43,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 00:34:43,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-19 00:34:43,941 INFO L87 Difference]: Start difference. First operand 1054 states and 1404 transitions. Second operand has 15 states, 12 states have (on average 4.5) internal successors, (54), 15 states have internal predecessors, (54), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-19 00:34:45,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:34:45,760 INFO L93 Difference]: Finished difference Result 2139 states and 2840 transitions. [2024-11-19 00:34:45,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 00:34:45,761 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 4.5) internal successors, (54), 15 states have internal predecessors, (54), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 4 states have call successors, (18) Word has length 141 [2024-11-19 00:34:45,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:34:45,767 INFO L225 Difference]: With dead ends: 2139 [2024-11-19 00:34:45,767 INFO L226 Difference]: Without dead ends: 1113 [2024-11-19 00:34:45,770 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2024-11-19 00:34:45,770 INFO L432 NwaCegarLoop]: 154 mSDtfsCounter, 357 mSDsluCounter, 1170 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 1126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-19 00:34:45,771 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 1324 Invalid, 1126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-19 00:34:45,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2024-11-19 00:34:45,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 1057. [2024-11-19 00:34:45,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 879 states have (on average 1.2400455062571103) internal successors, (1090), 889 states have internal predecessors, (1090), 158 states have call successors, (158), 19 states have call predecessors, (158), 19 states have return successors, (158), 148 states have call predecessors, (158), 158 states have call successors, (158) [2024-11-19 00:34:45,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1406 transitions. [2024-11-19 00:34:45,879 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1406 transitions. Word has length 141 [2024-11-19 00:34:45,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:34:45,879 INFO L471 AbstractCegarLoop]: Abstraction has 1057 states and 1406 transitions. [2024-11-19 00:34:45,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 4.5) internal successors, (54), 15 states have internal predecessors, (54), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-19 00:34:45,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1406 transitions. [2024-11-19 00:34:45,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-19 00:34:45,881 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:34:45,881 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:34:45,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 00:34:45,881 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:34:45,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:34:45,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1250866724, now seen corresponding path program 1 times [2024-11-19 00:34:45,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:34:45,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862265539] [2024-11-19 00:34:45,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:34:45,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:34:45,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:34:47,353 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-19 00:34:47,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:34:47,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862265539] [2024-11-19 00:34:47,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862265539] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:34:47,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:34:47,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-19 00:34:47,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973297486] [2024-11-19 00:34:47,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:34:47,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 00:34:47,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:34:47,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 00:34:47,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2024-11-19 00:34:47,355 INFO L87 Difference]: Start difference. First operand 1057 states and 1406 transitions. Second operand has 18 states, 15 states have (on average 3.6) internal successors, (54), 18 states have internal predecessors, (54), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-19 00:34:49,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:34:49,380 INFO L93 Difference]: Finished difference Result 2526 states and 3363 transitions. [2024-11-19 00:34:49,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-19 00:34:49,382 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 3.6) internal successors, (54), 18 states have internal predecessors, (54), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 4 states have call successors, (18) Word has length 141 [2024-11-19 00:34:49,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:34:49,388 INFO L225 Difference]: With dead ends: 2526 [2024-11-19 00:34:49,388 INFO L226 Difference]: Without dead ends: 1505 [2024-11-19 00:34:49,391 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=93, Invalid=719, Unknown=0, NotChecked=0, Total=812 [2024-11-19 00:34:49,392 INFO L432 NwaCegarLoop]: 262 mSDtfsCounter, 201 mSDsluCounter, 3003 mSDsCounter, 0 mSdLazyCounter, 1694 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 3265 SdHoareTripleChecker+Invalid, 1699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-19 00:34:49,393 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 3265 Invalid, 1699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1694 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-19 00:34:49,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2024-11-19 00:34:49,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1255. [2024-11-19 00:34:49,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1255 states, 1048 states have (on average 1.2423664122137406) internal successors, (1302), 1060 states have internal predecessors, (1302), 184 states have call successors, (184), 22 states have call predecessors, (184), 22 states have return successors, (184), 172 states have call predecessors, (184), 184 states have call successors, (184) [2024-11-19 00:34:49,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1670 transitions. [2024-11-19 00:34:49,523 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1670 transitions. Word has length 141 [2024-11-19 00:34:49,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:34:49,524 INFO L471 AbstractCegarLoop]: Abstraction has 1255 states and 1670 transitions. [2024-11-19 00:34:49,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 3.6) internal successors, (54), 18 states have internal predecessors, (54), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-19 00:34:49,524 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1670 transitions. [2024-11-19 00:34:49,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-19 00:34:49,527 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:34:49,527 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:34:49,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 00:34:49,527 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:34:49,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:34:49,528 INFO L85 PathProgramCache]: Analyzing trace with hash 2022448247, now seen corresponding path program 1 times [2024-11-19 00:34:49,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:34:49,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827950629] [2024-11-19 00:34:49,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:34:49,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:34:49,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:34:51,228 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-19 00:34:51,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:34:51,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827950629] [2024-11-19 00:34:51,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827950629] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:34:51,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:34:51,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-19 00:34:51,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339525416] [2024-11-19 00:34:51,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:34:51,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-19 00:34:51,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:34:51,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-19 00:34:51,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2024-11-19 00:34:51,231 INFO L87 Difference]: Start difference. First operand 1255 states and 1670 transitions. Second operand has 19 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 19 states have internal predecessors, (55), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-19 00:34:54,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:34:54,052 INFO L93 Difference]: Finished difference Result 2692 states and 3564 transitions. [2024-11-19 00:34:54,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-19 00:34:54,053 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 19 states have internal predecessors, (55), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) Word has length 142 [2024-11-19 00:34:54,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:34:54,061 INFO L225 Difference]: With dead ends: 2692 [2024-11-19 00:34:54,061 INFO L226 Difference]: Without dead ends: 1473 [2024-11-19 00:34:54,065 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=148, Invalid=974, Unknown=0, NotChecked=0, Total=1122 [2024-11-19 00:34:54,065 INFO L432 NwaCegarLoop]: 197 mSDtfsCounter, 261 mSDsluCounter, 2009 mSDsCounter, 0 mSdLazyCounter, 1786 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 2206 SdHoareTripleChecker+Invalid, 1853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-19 00:34:54,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 2206 Invalid, 1853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1786 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-19 00:34:54,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2024-11-19 00:34:54,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 1235. [2024-11-19 00:34:54,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1235 states, 1028 states have (on average 1.2412451361867705) internal successors, (1276), 1040 states have internal predecessors, (1276), 184 states have call successors, (184), 22 states have call predecessors, (184), 22 states have return successors, (184), 172 states have call predecessors, (184), 184 states have call successors, (184) [2024-11-19 00:34:54,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 1644 transitions. [2024-11-19 00:34:54,205 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 1644 transitions. Word has length 142 [2024-11-19 00:34:54,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:34:54,205 INFO L471 AbstractCegarLoop]: Abstraction has 1235 states and 1644 transitions. [2024-11-19 00:34:54,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 19 states have internal predecessors, (55), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-19 00:34:54,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 1644 transitions. [2024-11-19 00:34:54,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-19 00:34:54,207 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:34:54,207 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:34:54,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 00:34:54,207 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:34:54,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:34:54,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1307651178, now seen corresponding path program 1 times [2024-11-19 00:34:54,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:34:54,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332266138] [2024-11-19 00:34:54,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:34:54,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:34:54,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:34:54,759 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-19 00:34:54,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:34:54,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332266138] [2024-11-19 00:34:54,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332266138] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:34:54,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:34:54,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 00:34:54,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678058853] [2024-11-19 00:34:54,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:34:54,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 00:34:54,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:34:54,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 00:34:54,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 00:34:54,762 INFO L87 Difference]: Start difference. First operand 1235 states and 1644 transitions. Second operand has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-19 00:34:55,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:34:55,231 INFO L93 Difference]: Finished difference Result 2663 states and 3557 transitions. [2024-11-19 00:34:55,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 00:34:55,231 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 142 [2024-11-19 00:34:55,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:34:55,243 INFO L225 Difference]: With dead ends: 2663 [2024-11-19 00:34:55,243 INFO L226 Difference]: Without dead ends: 1867 [2024-11-19 00:34:55,248 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-19 00:34:55,248 INFO L432 NwaCegarLoop]: 182 mSDtfsCounter, 74 mSDsluCounter, 946 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 00:34:55,249 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 1128 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 00:34:55,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1867 states. [2024-11-19 00:34:55,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1867 to 1690. [2024-11-19 00:34:55,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1690 states, 1429 states have (on average 1.251924422673198) internal successors, (1789), 1447 states have internal predecessors, (1789), 232 states have call successors, (232), 28 states have call predecessors, (232), 28 states have return successors, (232), 214 states have call predecessors, (232), 232 states have call successors, (232) [2024-11-19 00:34:55,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 2253 transitions. [2024-11-19 00:34:55,386 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 2253 transitions. Word has length 142 [2024-11-19 00:34:55,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:34:55,386 INFO L471 AbstractCegarLoop]: Abstraction has 1690 states and 2253 transitions. [2024-11-19 00:34:55,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-19 00:34:55,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 2253 transitions. [2024-11-19 00:34:55,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-19 00:34:55,389 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:34:55,389 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:34:55,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 00:34:55,389 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:34:55,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:34:55,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1159940751, now seen corresponding path program 1 times [2024-11-19 00:34:55,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:34:55,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090758730] [2024-11-19 00:34:55,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:34:55,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:34:55,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:34:57,323 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-19 00:34:57,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:34:57,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090758730] [2024-11-19 00:34:57,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090758730] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:34:57,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:34:57,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-19 00:34:57,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571593793] [2024-11-19 00:34:57,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:34:57,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 00:34:57,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:34:57,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 00:34:57,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2024-11-19 00:34:57,325 INFO L87 Difference]: Start difference. First operand 1690 states and 2253 transitions. Second operand has 20 states, 16 states have (on average 3.4375) internal successors, (55), 20 states have internal predecessors, (55), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-19 00:35:00,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:35:00,755 INFO L93 Difference]: Finished difference Result 2884 states and 3850 transitions. [2024-11-19 00:35:00,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-19 00:35:00,756 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 3.4375) internal successors, (55), 20 states have internal predecessors, (55), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) Word has length 142 [2024-11-19 00:35:00,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:35:00,766 INFO L225 Difference]: With dead ends: 2884 [2024-11-19 00:35:00,767 INFO L226 Difference]: Without dead ends: 1825 [2024-11-19 00:35:00,770 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=124, Invalid=806, Unknown=0, NotChecked=0, Total=930 [2024-11-19 00:35:00,770 INFO L432 NwaCegarLoop]: 251 mSDtfsCounter, 232 mSDsluCounter, 2441 mSDsCounter, 0 mSdLazyCounter, 2294 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 2692 SdHoareTripleChecker+Invalid, 2332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-19 00:35:00,770 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 2692 Invalid, 2332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 2294 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-19 00:35:00,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1825 states. [2024-11-19 00:35:00,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1825 to 1697. [2024-11-19 00:35:00,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1697 states, 1436 states have (on average 1.251392757660167) internal successors, (1797), 1454 states have internal predecessors, (1797), 232 states have call successors, (232), 28 states have call predecessors, (232), 28 states have return successors, (232), 214 states have call predecessors, (232), 232 states have call successors, (232) [2024-11-19 00:35:00,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1697 states to 1697 states and 2261 transitions. [2024-11-19 00:35:00,904 INFO L78 Accepts]: Start accepts. Automaton has 1697 states and 2261 transitions. Word has length 142 [2024-11-19 00:35:00,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:35:00,904 INFO L471 AbstractCegarLoop]: Abstraction has 1697 states and 2261 transitions. [2024-11-19 00:35:00,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 3.4375) internal successors, (55), 20 states have internal predecessors, (55), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-19 00:35:00,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1697 states and 2261 transitions. [2024-11-19 00:35:00,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-19 00:35:00,906 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:35:00,907 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:35:00,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 00:35:00,907 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:35:00,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:35:00,908 INFO L85 PathProgramCache]: Analyzing trace with hash -340917670, now seen corresponding path program 1 times [2024-11-19 00:35:00,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:35:00,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468511301] [2024-11-19 00:35:00,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:35:00,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:35:00,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:35:01,840 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-19 00:35:01,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:35:01,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468511301] [2024-11-19 00:35:01,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468511301] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:35:01,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:35:01,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-19 00:35:01,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079090481] [2024-11-19 00:35:01,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:35:01,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 00:35:01,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:35:01,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 00:35:01,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2024-11-19 00:35:01,842 INFO L87 Difference]: Start difference. First operand 1697 states and 2261 transitions. Second operand has 16 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 16 states have internal predecessors, (55), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-19 00:35:02,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:35:02,810 INFO L93 Difference]: Finished difference Result 3386 states and 4507 transitions. [2024-11-19 00:35:02,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-19 00:35:02,811 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 16 states have internal predecessors, (55), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 3 states have call successors, (18) Word has length 142 [2024-11-19 00:35:02,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:35:02,819 INFO L225 Difference]: With dead ends: 3386 [2024-11-19 00:35:02,819 INFO L226 Difference]: Without dead ends: 1725 [2024-11-19 00:35:02,823 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2024-11-19 00:35:02,824 INFO L432 NwaCegarLoop]: 206 mSDtfsCounter, 104 mSDsluCounter, 1972 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 2178 SdHoareTripleChecker+Invalid, 1002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 00:35:02,824 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 2178 Invalid, 1002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 00:35:02,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1725 states. [2024-11-19 00:35:02,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1725 to 1653. [2024-11-19 00:35:02,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1653 states, 1392 states have (on average 1.2464080459770115) internal successors, (1735), 1410 states have internal predecessors, (1735), 232 states have call successors, (232), 28 states have call predecessors, (232), 28 states have return successors, (232), 214 states have call predecessors, (232), 232 states have call successors, (232) [2024-11-19 00:35:02,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1653 states to 1653 states and 2199 transitions. [2024-11-19 00:35:02,971 INFO L78 Accepts]: Start accepts. Automaton has 1653 states and 2199 transitions. Word has length 142 [2024-11-19 00:35:02,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:35:02,971 INFO L471 AbstractCegarLoop]: Abstraction has 1653 states and 2199 transitions. [2024-11-19 00:35:02,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 16 states have internal predecessors, (55), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-19 00:35:02,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1653 states and 2199 transitions. [2024-11-19 00:35:02,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-19 00:35:02,973 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:35:02,973 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:35:02,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 00:35:02,974 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:35:02,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:35:02,974 INFO L85 PathProgramCache]: Analyzing trace with hash 2031090635, now seen corresponding path program 1 times [2024-11-19 00:35:02,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:35:02,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366040661] [2024-11-19 00:35:02,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:35:02,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:35:03,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:35:04,149 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-19 00:35:04,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:35:04,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366040661] [2024-11-19 00:35:04,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366040661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:35:04,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:35:04,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-19 00:35:04,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487063101] [2024-11-19 00:35:04,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:35:04,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 00:35:04,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:35:04,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 00:35:04,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2024-11-19 00:35:04,151 INFO L87 Difference]: Start difference. First operand 1653 states and 2199 transitions. Second operand has 16 states, 14 states have (on average 4.0) internal successors, (56), 16 states have internal predecessors, (56), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-19 00:35:05,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:35:05,780 INFO L93 Difference]: Finished difference Result 3448 states and 4565 transitions. [2024-11-19 00:35:05,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-19 00:35:05,781 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 4.0) internal successors, (56), 16 states have internal predecessors, (56), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 3 states have call successors, (18) Word has length 143 [2024-11-19 00:35:05,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:35:05,790 INFO L225 Difference]: With dead ends: 3448 [2024-11-19 00:35:05,790 INFO L226 Difference]: Without dead ends: 1831 [2024-11-19 00:35:05,794 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=145, Invalid=725, Unknown=0, NotChecked=0, Total=870 [2024-11-19 00:35:05,795 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 334 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 1167 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 1345 SdHoareTripleChecker+Invalid, 1274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-19 00:35:05,795 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 1345 Invalid, 1274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1167 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-19 00:35:05,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1831 states. [2024-11-19 00:35:05,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1831 to 1721. [2024-11-19 00:35:05,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1721 states, 1437 states have (on average 1.2407794015309672) internal successors, (1783), 1456 states have internal predecessors, (1783), 250 states have call successors, (250), 33 states have call predecessors, (250), 33 states have return successors, (250), 231 states have call predecessors, (250), 250 states have call successors, (250) [2024-11-19 00:35:05,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1721 states to 1721 states and 2283 transitions. [2024-11-19 00:35:05,973 INFO L78 Accepts]: Start accepts. Automaton has 1721 states and 2283 transitions. Word has length 143 [2024-11-19 00:35:05,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:35:05,973 INFO L471 AbstractCegarLoop]: Abstraction has 1721 states and 2283 transitions. [2024-11-19 00:35:05,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 4.0) internal successors, (56), 16 states have internal predecessors, (56), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-19 00:35:05,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1721 states and 2283 transitions. [2024-11-19 00:35:05,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-19 00:35:05,975 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:35:05,975 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:35:05,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 00:35:05,976 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:35:05,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:35:05,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1120267628, now seen corresponding path program 1 times [2024-11-19 00:35:05,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:35:05,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746085802] [2024-11-19 00:35:05,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:35:05,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:35:06,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:35:06,146 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-19 00:35:06,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:35:06,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746085802] [2024-11-19 00:35:06,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746085802] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:35:06,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:35:06,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 00:35:06,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911163804] [2024-11-19 00:35:06,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:35:06,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 00:35:06,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:35:06,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 00:35:06,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 00:35:06,151 INFO L87 Difference]: Start difference. First operand 1721 states and 2283 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:35:06,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:35:06,392 INFO L93 Difference]: Finished difference Result 3733 states and 4943 transitions. [2024-11-19 00:35:06,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 00:35:06,393 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 143 [2024-11-19 00:35:06,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:35:06,405 INFO L225 Difference]: With dead ends: 3733 [2024-11-19 00:35:06,405 INFO L226 Difference]: Without dead ends: 2048 [2024-11-19 00:35:06,409 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 00:35:06,410 INFO L432 NwaCegarLoop]: 173 mSDtfsCounter, 46 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 00:35:06,410 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 614 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 00:35:06,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2048 states. [2024-11-19 00:35:06,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2048 to 1821. [2024-11-19 00:35:06,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1821 states, 1537 states have (on average 1.2394274560832792) internal successors, (1905), 1556 states have internal predecessors, (1905), 250 states have call successors, (250), 33 states have call predecessors, (250), 33 states have return successors, (250), 231 states have call predecessors, (250), 250 states have call successors, (250) [2024-11-19 00:35:06,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 2405 transitions. [2024-11-19 00:35:06,594 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 2405 transitions. Word has length 143 [2024-11-19 00:35:06,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:35:06,595 INFO L471 AbstractCegarLoop]: Abstraction has 1821 states and 2405 transitions. [2024-11-19 00:35:06,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:35:06,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 2405 transitions. [2024-11-19 00:35:06,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-19 00:35:06,596 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:35:06,597 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:35:06,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 00:35:06,597 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:35:06,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:35:06,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1267978055, now seen corresponding path program 1 times [2024-11-19 00:35:06,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:35:06,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563053763] [2024-11-19 00:35:06,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:35:06,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:35:06,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:35:06,729 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-19 00:35:06,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:35:06,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563053763] [2024-11-19 00:35:06,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563053763] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:35:06,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:35:06,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 00:35:06,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045148983] [2024-11-19 00:35:06,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:35:06,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 00:35:06,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:35:06,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 00:35:06,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 00:35:06,732 INFO L87 Difference]: Start difference. First operand 1821 states and 2405 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:35:06,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:35:06,929 INFO L93 Difference]: Finished difference Result 3833 states and 5051 transitions. [2024-11-19 00:35:06,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 00:35:06,930 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 143 [2024-11-19 00:35:06,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:35:06,939 INFO L225 Difference]: With dead ends: 3833 [2024-11-19 00:35:06,940 INFO L226 Difference]: Without dead ends: 2048 [2024-11-19 00:35:06,943 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 00:35:06,944 INFO L432 NwaCegarLoop]: 171 mSDtfsCounter, 53 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 00:35:06,944 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 611 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 00:35:06,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2048 states. [2024-11-19 00:35:07,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2048 to 1821. [2024-11-19 00:35:07,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1821 states, 1537 states have (on average 1.2342225113858165) internal successors, (1897), 1556 states have internal predecessors, (1897), 250 states have call successors, (250), 33 states have call predecessors, (250), 33 states have return successors, (250), 231 states have call predecessors, (250), 250 states have call successors, (250) [2024-11-19 00:35:07,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 2397 transitions. [2024-11-19 00:35:07,120 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 2397 transitions. Word has length 143 [2024-11-19 00:35:07,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:35:07,120 INFO L471 AbstractCegarLoop]: Abstraction has 1821 states and 2397 transitions. [2024-11-19 00:35:07,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 00:35:07,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 2397 transitions. [2024-11-19 00:35:07,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-19 00:35:07,122 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:35:07,122 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:35:07,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-19 00:35:07,123 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:35:07,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:35:07,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1438641339, now seen corresponding path program 1 times [2024-11-19 00:35:07,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:35:07,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921200312] [2024-11-19 00:35:07,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:35:07,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:35:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:35:08,822 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-19 00:35:08,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:35:08,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921200312] [2024-11-19 00:35:08,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921200312] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:35:08,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:35:08,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-19 00:35:08,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177764684] [2024-11-19 00:35:08,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:35:08,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 00:35:08,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:35:08,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 00:35:08,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2024-11-19 00:35:08,824 INFO L87 Difference]: Start difference. First operand 1821 states and 2397 transitions. Second operand has 18 states, 14 states have (on average 4.0) internal successors, (56), 18 states have internal predecessors, (56), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-19 00:35:13,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:35:13,660 INFO L93 Difference]: Finished difference Result 3774 states and 4953 transitions. [2024-11-19 00:35:13,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-19 00:35:13,661 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 14 states have (on average 4.0) internal successors, (56), 18 states have internal predecessors, (56), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) Word has length 143 [2024-11-19 00:35:13,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:35:13,671 INFO L225 Difference]: With dead ends: 3774 [2024-11-19 00:35:13,671 INFO L226 Difference]: Without dead ends: 1989 [2024-11-19 00:35:13,676 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=111, Invalid=701, Unknown=0, NotChecked=0, Total=812 [2024-11-19 00:35:13,677 INFO L432 NwaCegarLoop]: 200 mSDtfsCounter, 238 mSDsluCounter, 1858 mSDsCounter, 0 mSdLazyCounter, 1586 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 2058 SdHoareTripleChecker+Invalid, 1613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-19 00:35:13,677 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 2058 Invalid, 1613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1586 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-19 00:35:13,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1989 states. [2024-11-19 00:35:13,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1989 to 1833. [2024-11-19 00:35:13,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1833 states, 1549 states have (on average 1.2330535829567464) internal successors, (1910), 1568 states have internal predecessors, (1910), 250 states have call successors, (250), 33 states have call predecessors, (250), 33 states have return successors, (250), 231 states have call predecessors, (250), 250 states have call successors, (250) [2024-11-19 00:35:13,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1833 states to 1833 states and 2410 transitions. [2024-11-19 00:35:13,926 INFO L78 Accepts]: Start accepts. Automaton has 1833 states and 2410 transitions. Word has length 143 [2024-11-19 00:35:13,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:35:13,926 INFO L471 AbstractCegarLoop]: Abstraction has 1833 states and 2410 transitions. [2024-11-19 00:35:13,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 14 states have (on average 4.0) internal successors, (56), 18 states have internal predecessors, (56), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-19 00:35:13,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1833 states and 2410 transitions. [2024-11-19 00:35:13,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-19 00:35:13,928 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:35:13,928 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:35:13,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-19 00:35:13,928 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:35:13,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:35:13,929 INFO L85 PathProgramCache]: Analyzing trace with hash -956151861, now seen corresponding path program 1 times [2024-11-19 00:35:13,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:35:13,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548506225] [2024-11-19 00:35:13,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:35:13,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:35:13,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:35:14,843 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-19 00:35:14,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:35:14,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548506225] [2024-11-19 00:35:14,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548506225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:35:14,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:35:14,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-19 00:35:14,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184105047] [2024-11-19 00:35:14,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:35:14,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 00:35:14,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:35:14,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 00:35:14,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-19 00:35:14,845 INFO L87 Difference]: Start difference. First operand 1833 states and 2410 transitions. Second operand has 13 states, 10 states have (on average 5.6) internal successors, (56), 13 states have internal predecessors, (56), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 4 states have call successors, (18)