./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-90.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.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-90.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 b03e5164bce3a85426688c5c2210a00154d48f59702228593c435153664697b2 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 05:29:38,197 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 05:29:38,246 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 05:29:38,249 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 05:29:38,250 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 05:29:38,263 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 05:29:38,264 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 05:29:38,264 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 05:29:38,265 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 05:29:38,265 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 05:29:38,265 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 05:29:38,265 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 05:29:38,266 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 05:29:38,266 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 05:29:38,266 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 05:29:38,266 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 05:29:38,266 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 05:29:38,267 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 05:29:38,267 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 05:29:38,267 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 05:29:38,267 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 05:29:38,267 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 05:29:38,267 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 05:29:38,267 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 05:29:38,267 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 05:29:38,267 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 05:29:38,267 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 05:29:38,267 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 05:29:38,267 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 05:29:38,267 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 05:29:38,267 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 05:29:38,267 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 05:29:38,268 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 05:29:38,268 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 05:29:38,268 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 05:29:38,268 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 05:29:38,268 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 05:29:38,268 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 05:29:38,268 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 05:29:38,268 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 05:29:38,268 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 05:29:38,268 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 05:29:38,268 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 05:29:38,268 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> b03e5164bce3a85426688c5c2210a00154d48f59702228593c435153664697b2 [2025-03-17 05:29:38,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 05:29:38,512 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 05:29:38,514 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 05:29:38,515 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 05:29:38,515 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 05:29:38,517 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-90.i [2025-03-17 05:29:39,681 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b3fb62b1/ceea6e0cbb4d4ea2b3067194bfc04395/FLAG2a2a87977 [2025-03-17 05:29:39,940 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 05:29:39,940 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-90.i [2025-03-17 05:29:39,949 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b3fb62b1/ceea6e0cbb4d4ea2b3067194bfc04395/FLAG2a2a87977 [2025-03-17 05:29:39,962 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b3fb62b1/ceea6e0cbb4d4ea2b3067194bfc04395 [2025-03-17 05:29:39,965 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 05:29:39,966 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 05:29:39,968 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 05:29:39,969 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 05:29:39,972 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 05:29:39,972 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 05:29:39" (1/1) ... [2025-03-17 05:29:39,974 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a707027 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:29:39, skipping insertion in model container [2025-03-17 05:29:39,974 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 05:29:39" (1/1) ... [2025-03-17 05:29:39,987 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 05:29:40,089 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-90.i[916,929] [2025-03-17 05:29:40,153 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 05:29:40,160 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 05:29:40,169 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-90.i[916,929] [2025-03-17 05:29:40,200 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 05:29:40,211 INFO L204 MainTranslator]: Completed translation [2025-03-17 05:29:40,211 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:29:40 WrapperNode [2025-03-17 05:29:40,212 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 05:29:40,213 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 05:29:40,213 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 05:29:40,213 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 05:29:40,217 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:29:40" (1/1) ... [2025-03-17 05:29:40,226 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:29:40" (1/1) ... [2025-03-17 05:29:40,255 INFO L138 Inliner]: procedures = 26, calls = 165, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 466 [2025-03-17 05:29:40,258 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 05:29:40,259 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 05:29:40,259 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 05:29:40,259 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 05:29:40,265 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:29:40" (1/1) ... [2025-03-17 05:29:40,265 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:29:40" (1/1) ... [2025-03-17 05:29:40,269 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:29:40" (1/1) ... [2025-03-17 05:29:40,287 INFO L175 MemorySlicer]: Split 130 memory accesses to 5 slices as follows [2, 34, 4, 55, 35]. 42 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 1, 6, 3]. The 19 writes are split as follows [0, 6, 1, 6, 6]. [2025-03-17 05:29:40,287 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:29:40" (1/1) ... [2025-03-17 05:29:40,287 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:29:40" (1/1) ... [2025-03-17 05:29:40,297 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:29:40" (1/1) ... [2025-03-17 05:29:40,298 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:29:40" (1/1) ... [2025-03-17 05:29:40,299 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:29:40" (1/1) ... [2025-03-17 05:29:40,300 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:29:40" (1/1) ... [2025-03-17 05:29:40,302 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 05:29:40,303 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 05:29:40,303 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 05:29:40,303 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 05:29:40,303 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:29:40" (1/1) ... [2025-03-17 05:29:40,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 05:29:40,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 05:29:40,328 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) [2025-03-17 05:29:40,334 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 [2025-03-17 05:29:40,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 05:29:40,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 05:29:40,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 05:29:40,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-17 05:29:40,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-17 05:29:40,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-17 05:29:40,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 05:29:40,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 05:29:40,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-17 05:29:40,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-17 05:29:40,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-17 05:29:40,350 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 05:29:40,350 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 05:29:40,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 05:29:40,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 05:29:40,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-17 05:29:40,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-17 05:29:40,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-17 05:29:40,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 05:29:40,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 05:29:40,440 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 05:29:40,442 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 05:29:40,832 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L108: havoc property_#t~mem73#1;havoc property_#t~ite82#1;havoc property_#t~mem81#1;havoc property_#t~mem74#1;havoc property_#t~mem75#1;havoc property_#t~mem76#1;havoc property_#t~ite80#1;havoc property_#t~mem77#1;havoc property_#t~mem78#1;havoc property_#t~mem79#1;havoc property_#t~mem83#1;havoc property_#t~mem84#1;havoc property_#t~ite87#1;havoc property_#t~mem85#1;havoc property_#t~mem86#1;havoc property_#t~ite100#1;havoc property_#t~mem88#1;havoc property_#t~mem89#1;havoc property_#t~ite97#1;havoc property_#t~ite94#1;havoc property_#t~mem91#1;havoc property_#t~mem90#1;havoc property_#t~mem93#1;havoc property_#t~mem92#1;havoc property_#t~mem96#1;havoc property_#t~mem95#1;havoc property_#t~mem99#1;havoc property_#t~mem98#1;havoc property_#t~short101#1;havoc property_#t~mem102#1;havoc property_#t~ite111#1;havoc property_#t~mem106#1;havoc property_#t~mem104#1;havoc property_#t~mem103#1;havoc property_#t~short105#1;havoc property_#t~mem110#1;havoc property_#t~mem107#1;havoc property_#t~mem108#1;havoc property_#t~short109#1;havoc property_#t~short112#1;havoc property_#t~mem118#1;havoc property_#t~mem114#1;havoc property_#t~mem113#1;havoc property_#t~ite117#1;havoc property_#t~mem115#1;havoc property_#t~mem116#1;havoc property_#t~short119#1;havoc property_#t~mem120#1;havoc property_#t~mem121#1;havoc property_#t~ite127#1;havoc property_#t~mem122#1;havoc property_#t~mem123#1;havoc property_#t~ite126#1;havoc property_#t~mem125#1;havoc property_#t~mem124#1;havoc property_#t~short128#1; [2025-03-17 05:29:40,871 INFO L? ?]: Removed 110 outVars from TransFormulas that were not future-live. [2025-03-17 05:29:40,872 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 05:29:40,879 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 05:29:40,879 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 05:29:40,879 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 05:29:40 BoogieIcfgContainer [2025-03-17 05:29:40,879 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 05:29:40,881 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 05:29:40,881 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 05:29:40,884 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 05:29:40,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 05:29:39" (1/3) ... [2025-03-17 05:29:40,885 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e0bb0b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 05:29:40, skipping insertion in model container [2025-03-17 05:29:40,885 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:29:40" (2/3) ... [2025-03-17 05:29:40,885 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e0bb0b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 05:29:40, skipping insertion in model container [2025-03-17 05:29:40,885 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 05:29:40" (3/3) ... [2025-03-17 05:29:40,887 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-90.i [2025-03-17 05:29:40,897 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 05:29:40,899 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-a_file-90.i that has 2 procedures, 105 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-17 05:29:40,945 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 05:29:40,955 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;@e5baefd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 05:29:40,955 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 05:29:40,958 INFO L276 IsEmpty]: Start isEmpty. Operand has 105 states, 82 states have (on average 1.3902439024390243) internal successors, (114), 83 states have internal predecessors, (114), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-17 05:29:40,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-03-17 05:29:40,966 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:29:40,967 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:29:40,967 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:29:40,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:29:40,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1792362862, now seen corresponding path program 1 times [2025-03-17 05:29:40,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:29:40,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824943446] [2025-03-17 05:29:40,979 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:29:40,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:29:41,069 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-17 05:29:41,093 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-17 05:29:41,093 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:29:41,094 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:29:41,253 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2025-03-17 05:29:41,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:29:41,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824943446] [2025-03-17 05:29:41,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824943446] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 05:29:41,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218647737] [2025-03-17 05:29:41,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:29:41,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:29:41,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 05:29:41,258 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) [2025-03-17 05:29:41,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 05:29:41,355 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-17 05:29:41,412 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-17 05:29:41,412 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:29:41,412 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:29:41,415 INFO L256 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 05:29:41,420 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 05:29:41,435 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2025-03-17 05:29:41,436 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 05:29:41,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218647737] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:29:41,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 05:29:41,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-17 05:29:41,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251911997] [2025-03-17 05:29:41,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:29:41,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 05:29:41,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:29:41,456 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 05:29:41,456 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 05:29:41,458 INFO L87 Difference]: Start difference. First operand has 105 states, 82 states have (on average 1.3902439024390243) internal successors, (114), 83 states have internal predecessors, (114), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2025-03-17 05:29:41,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:29:41,475 INFO L93 Difference]: Finished difference Result 207 states and 326 transitions. [2025-03-17 05:29:41,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 05:29:41,476 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 149 [2025-03-17 05:29:41,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:29:41,480 INFO L225 Difference]: With dead ends: 207 [2025-03-17 05:29:41,480 INFO L226 Difference]: Without dead ends: 103 [2025-03-17 05:29:41,482 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 05:29:41,484 INFO L435 NwaCegarLoop]: 150 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, 150 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 [2025-03-17 05:29:41,484 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 05:29:41,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2025-03-17 05:29:41,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2025-03-17 05:29:41,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 81 states have (on average 1.3580246913580247) internal successors, (110), 81 states have internal predecessors, (110), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-17 05:29:41,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 150 transitions. [2025-03-17 05:29:41,520 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 150 transitions. Word has length 149 [2025-03-17 05:29:41,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:29:41,520 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 150 transitions. [2025-03-17 05:29:41,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2025-03-17 05:29:41,520 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 150 transitions. [2025-03-17 05:29:41,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-03-17 05:29:41,522 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:29:41,522 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:29:41,529 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 05:29:41,723 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 [2025-03-17 05:29:41,723 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:29:41,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:29:41,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1587771390, now seen corresponding path program 1 times [2025-03-17 05:29:41,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:29:41,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610558272] [2025-03-17 05:29:41,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:29:41,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:29:41,748 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-17 05:29:41,791 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-17 05:29:41,791 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:29:41,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:29:42,082 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2025-03-17 05:29:42,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:29:42,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610558272] [2025-03-17 05:29:42,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610558272] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 05:29:42,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997450876] [2025-03-17 05:29:42,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:29:42,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:29:42,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 05:29:42,086 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) [2025-03-17 05:29:42,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 05:29:42,178 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-17 05:29:42,235 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-17 05:29:42,235 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:29:42,236 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:29:42,238 INFO L256 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 05:29:42,244 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 05:29:42,278 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-17 05:29:42,278 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 05:29:42,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997450876] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:29:42,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 05:29:42,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2025-03-17 05:29:42,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019285229] [2025-03-17 05:29:42,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:29:42,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 05:29:42,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:29:42,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 05:29:42,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-17 05:29:42,284 INFO L87 Difference]: Start difference. First operand 103 states and 150 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2025-03-17 05:29:42,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:29:42,312 INFO L93 Difference]: Finished difference Result 207 states and 302 transitions. [2025-03-17 05:29:42,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 05:29:42,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 149 [2025-03-17 05:29:42,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:29:42,316 INFO L225 Difference]: With dead ends: 207 [2025-03-17 05:29:42,316 INFO L226 Difference]: Without dead ends: 105 [2025-03-17 05:29:42,317 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-17 05:29:42,319 INFO L435 NwaCegarLoop]: 148 mSDtfsCounter, 0 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 05:29:42,319 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 433 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 05:29:42,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2025-03-17 05:29:42,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2025-03-17 05:29:42,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 83 states have (on average 1.3493975903614457) internal successors, (112), 83 states have internal predecessors, (112), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-17 05:29:42,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 152 transitions. [2025-03-17 05:29:42,335 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 152 transitions. Word has length 149 [2025-03-17 05:29:42,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:29:42,336 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 152 transitions. [2025-03-17 05:29:42,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2025-03-17 05:29:42,336 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 152 transitions. [2025-03-17 05:29:42,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-17 05:29:42,338 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:29:42,338 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:29:42,345 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 05:29:42,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2025-03-17 05:29:42,539 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:29:42,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:29:42,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1228571712, now seen corresponding path program 1 times [2025-03-17 05:29:42,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:29:42,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717824443] [2025-03-17 05:29:42,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:29:42,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:29:42,576 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-17 05:29:42,621 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-17 05:29:42,622 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:29:42,623 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:29:43,167 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-17 05:29:43,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:29:43,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717824443] [2025-03-17 05:29:43,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717824443] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:29:43,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:29:43,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 05:29:43,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949203763] [2025-03-17 05:29:43,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:29:43,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 05:29:43,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:29:43,169 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 05:29:43,169 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 05:29:43,169 INFO L87 Difference]: Start difference. First operand 105 states and 152 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2025-03-17 05:29:43,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:29:43,472 INFO L93 Difference]: Finished difference Result 303 states and 439 transitions. [2025-03-17 05:29:43,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 05:29:43,472 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 151 [2025-03-17 05:29:43,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:29:43,475 INFO L225 Difference]: With dead ends: 303 [2025-03-17 05:29:43,476 INFO L226 Difference]: Without dead ends: 199 [2025-03-17 05:29:43,476 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-03-17 05:29:43,477 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 269 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 05:29:43,477 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 415 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 05:29:43,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2025-03-17 05:29:43,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 107. [2025-03-17 05:29:43,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 85 states have (on average 1.3411764705882352) internal successors, (114), 85 states have internal predecessors, (114), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-17 05:29:43,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 154 transitions. [2025-03-17 05:29:43,488 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 154 transitions. Word has length 151 [2025-03-17 05:29:43,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:29:43,488 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 154 transitions. [2025-03-17 05:29:43,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2025-03-17 05:29:43,488 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 154 transitions. [2025-03-17 05:29:43,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2025-03-17 05:29:43,489 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:29:43,489 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:29:43,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 05:29:43,490 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:29:43,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:29:43,490 INFO L85 PathProgramCache]: Analyzing trace with hash 738144443, now seen corresponding path program 1 times [2025-03-17 05:29:43,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:29:43,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363270563] [2025-03-17 05:29:43,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:29:43,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:29:43,510 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-03-17 05:29:43,589 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-03-17 05:29:43,590 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:29:43,590 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:29:44,816 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-17 05:29:44,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:29:44,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363270563] [2025-03-17 05:29:44,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363270563] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:29:44,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:29:44,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 05:29:44,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148629730] [2025-03-17 05:29:44,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:29:44,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-17 05:29:44,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:29:44,817 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-17 05:29:44,818 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-17 05:29:44,818 INFO L87 Difference]: Start difference. First operand 107 states and 154 transitions. Second operand has 10 states, 8 states have (on average 6.875) internal successors, (55), 10 states have internal predecessors, (55), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 3 states have call successors, (20) [2025-03-17 05:29:47,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:29:47,054 INFO L93 Difference]: Finished difference Result 310 states and 441 transitions. [2025-03-17 05:29:47,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 05:29:47,055 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.875) internal successors, (55), 10 states have internal predecessors, (55), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 3 states have call successors, (20) Word has length 152 [2025-03-17 05:29:47,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:29:47,056 INFO L225 Difference]: With dead ends: 310 [2025-03-17 05:29:47,056 INFO L226 Difference]: Without dead ends: 204 [2025-03-17 05:29:47,057 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2025-03-17 05:29:47,057 INFO L435 NwaCegarLoop]: 154 mSDtfsCounter, 293 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-17 05:29:47,057 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 1019 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-17 05:29:47,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2025-03-17 05:29:47,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 138. [2025-03-17 05:29:47,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 115 states have (on average 1.3478260869565217) internal successors, (155), 115 states have internal predecessors, (155), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-17 05:29:47,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 195 transitions. [2025-03-17 05:29:47,081 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 195 transitions. Word has length 152 [2025-03-17 05:29:47,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:29:47,081 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 195 transitions. [2025-03-17 05:29:47,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.875) internal successors, (55), 10 states have internal predecessors, (55), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 3 states have call successors, (20) [2025-03-17 05:29:47,082 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 195 transitions. [2025-03-17 05:29:47,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-03-17 05:29:47,083 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:29:47,084 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:29:47,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 05:29:47,084 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:29:47,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:29:47,085 INFO L85 PathProgramCache]: Analyzing trace with hash -671612782, now seen corresponding path program 1 times [2025-03-17 05:29:47,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:29:47,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85243618] [2025-03-17 05:29:47,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:29:47,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:29:47,104 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-17 05:29:47,140 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-17 05:29:47,141 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:29:47,142 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:29:47,783 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-17 05:29:47,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:29:47,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85243618] [2025-03-17 05:29:47,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85243618] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:29:47,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:29:47,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 05:29:47,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024386345] [2025-03-17 05:29:47,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:29:47,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 05:29:47,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:29:47,785 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 05:29:47,785 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-17 05:29:47,785 INFO L87 Difference]: Start difference. First operand 138 states and 195 transitions. Second operand has 8 states, 7 states have (on average 8.0) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2025-03-17 05:29:47,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:29:47,953 INFO L93 Difference]: Finished difference Result 278 states and 393 transitions. [2025-03-17 05:29:47,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 05:29:47,954 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.0) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 153 [2025-03-17 05:29:47,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:29:47,955 INFO L225 Difference]: With dead ends: 278 [2025-03-17 05:29:47,955 INFO L226 Difference]: Without dead ends: 141 [2025-03-17 05:29:47,956 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-03-17 05:29:47,956 INFO L435 NwaCegarLoop]: 135 mSDtfsCounter, 114 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 05:29:47,956 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 711 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 05:29:47,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2025-03-17 05:29:47,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 114. [2025-03-17 05:29:47,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 91 states have (on average 1.3186813186813187) internal successors, (120), 91 states have internal predecessors, (120), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-17 05:29:47,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 160 transitions. [2025-03-17 05:29:47,971 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 160 transitions. Word has length 153 [2025-03-17 05:29:47,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:29:47,971 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 160 transitions. [2025-03-17 05:29:47,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.0) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2025-03-17 05:29:47,971 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 160 transitions. [2025-03-17 05:29:47,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-03-17 05:29:47,972 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:29:47,972 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:29:47,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 05:29:47,973 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:29:47,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:29:47,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1326672642, now seen corresponding path program 1 times [2025-03-17 05:29:47,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:29:47,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230378396] [2025-03-17 05:29:47,973 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:29:47,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:29:47,988 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-17 05:29:48,058 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-17 05:29:48,058 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:29:48,058 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:29:49,630 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 36 proven. 21 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2025-03-17 05:29:49,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:29:49,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230378396] [2025-03-17 05:29:49,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230378396] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 05:29:49,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883709584] [2025-03-17 05:29:49,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:29:49,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:29:49,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 05:29:49,635 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 05:29:49,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 05:29:49,722 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-17 05:29:49,772 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-17 05:29:49,772 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:29:49,772 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:29:49,774 INFO L256 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-03-17 05:29:49,782 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 05:29:49,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-17 05:29:49,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2025-03-17 05:29:50,066 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 05:29:50,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 36 [2025-03-17 05:29:50,113 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 05:29:50,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 20 [2025-03-17 05:29:50,150 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 193 proven. 6 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2025-03-17 05:29:50,150 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 05:29:50,678 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 102 proven. 9 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2025-03-17 05:29:50,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883709584] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 05:29:50,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 05:29:50,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 12, 12] total 37 [2025-03-17 05:29:50,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95443970] [2025-03-17 05:29:50,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 05:29:50,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-03-17 05:29:50,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:29:50,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-03-17 05:29:50,681 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1187, Unknown=0, NotChecked=0, Total=1332 [2025-03-17 05:29:50,681 INFO L87 Difference]: Start difference. First operand 114 states and 160 transitions. Second operand has 37 states, 32 states have (on average 3.84375) internal successors, (123), 36 states have internal predecessors, (123), 12 states have call successors, (43), 3 states have call predecessors, (43), 6 states have return successors, (43), 8 states have call predecessors, (43), 12 states have call successors, (43) [2025-03-17 05:29:54,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:29:54,580 INFO L93 Difference]: Finished difference Result 542 states and 738 transitions. [2025-03-17 05:29:54,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2025-03-17 05:29:54,581 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 32 states have (on average 3.84375) internal successors, (123), 36 states have internal predecessors, (123), 12 states have call successors, (43), 3 states have call predecessors, (43), 6 states have return successors, (43), 8 states have call predecessors, (43), 12 states have call successors, (43) Word has length 153 [2025-03-17 05:29:54,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:29:54,583 INFO L225 Difference]: With dead ends: 542 [2025-03-17 05:29:54,583 INFO L226 Difference]: Without dead ends: 429 [2025-03-17 05:29:54,587 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 291 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2778 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1526, Invalid=8776, Unknown=0, NotChecked=0, Total=10302 [2025-03-17 05:29:54,588 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 2721 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 2603 mSolverCounterSat, 1040 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2739 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 3643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1040 IncrementalHoareTripleChecker+Valid, 2603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-17 05:29:54,589 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2739 Valid, 1263 Invalid, 3643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1040 Valid, 2603 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-17 05:29:54,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2025-03-17 05:29:54,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 280. [2025-03-17 05:29:54,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 216 states have (on average 1.2592592592592593) internal successors, (272), 217 states have internal predecessors, (272), 52 states have call successors, (52), 11 states have call predecessors, (52), 11 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2025-03-17 05:29:54,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 376 transitions. [2025-03-17 05:29:54,626 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 376 transitions. Word has length 153 [2025-03-17 05:29:54,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:29:54,627 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 376 transitions. [2025-03-17 05:29:54,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 32 states have (on average 3.84375) internal successors, (123), 36 states have internal predecessors, (123), 12 states have call successors, (43), 3 states have call predecessors, (43), 6 states have return successors, (43), 8 states have call predecessors, (43), 12 states have call successors, (43) [2025-03-17 05:29:54,627 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 376 transitions. [2025-03-17 05:29:54,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2025-03-17 05:29:54,628 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:29:54,628 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:29:54,635 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-17 05:29:54,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:29:54,829 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:29:54,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:29:54,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1709935014, now seen corresponding path program 1 times [2025-03-17 05:29:54,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:29:54,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463440278] [2025-03-17 05:29:54,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:29:54,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:29:54,843 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 154 statements into 1 equivalence classes. [2025-03-17 05:29:54,853 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 154 of 154 statements. [2025-03-17 05:29:54,854 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:29:54,854 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:29:55,352 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-17 05:29:55,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:29:55,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463440278] [2025-03-17 05:29:55,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463440278] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:29:55,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:29:55,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 05:29:55,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397501964] [2025-03-17 05:29:55,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:29:55,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 05:29:55,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:29:55,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 05:29:55,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 05:29:55,356 INFO L87 Difference]: Start difference. First operand 280 states and 376 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2025-03-17 05:29:55,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:29:55,524 INFO L93 Difference]: Finished difference Result 595 states and 807 transitions. [2025-03-17 05:29:55,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 05:29:55,524 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 154 [2025-03-17 05:29:55,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:29:55,529 INFO L225 Difference]: With dead ends: 595 [2025-03-17 05:29:55,529 INFO L226 Difference]: Without dead ends: 411 [2025-03-17 05:29:55,529 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 05:29:55,529 INFO L435 NwaCegarLoop]: 181 mSDtfsCounter, 83 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 05:29:55,529 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 560 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 05:29:55,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2025-03-17 05:29:55,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 407. [2025-03-17 05:29:55,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 320 states have (on average 1.265625) internal successors, (405), 323 states have internal predecessors, (405), 72 states have call successors, (72), 14 states have call predecessors, (72), 14 states have return successors, (72), 69 states have call predecessors, (72), 72 states have call successors, (72) [2025-03-17 05:29:55,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 549 transitions. [2025-03-17 05:29:55,571 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 549 transitions. Word has length 154 [2025-03-17 05:29:55,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:29:55,572 INFO L471 AbstractCegarLoop]: Abstraction has 407 states and 549 transitions. [2025-03-17 05:29:55,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2025-03-17 05:29:55,572 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 549 transitions. [2025-03-17 05:29:55,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2025-03-17 05:29:55,574 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:29:55,574 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:29:55,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 05:29:55,574 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:29:55,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:29:55,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1218421286, now seen corresponding path program 1 times [2025-03-17 05:29:55,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:29:55,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928771181] [2025-03-17 05:29:55,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:29:55,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:29:55,587 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 154 statements into 1 equivalence classes. [2025-03-17 05:29:55,598 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 154 of 154 statements. [2025-03-17 05:29:55,598 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:29:55,598 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:29:56,060 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-17 05:29:56,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:29:56,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928771181] [2025-03-17 05:29:56,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928771181] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:29:56,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:29:56,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 05:29:56,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452465294] [2025-03-17 05:29:56,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:29:56,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 05:29:56,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:29:56,062 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 05:29:56,062 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-17 05:29:56,062 INFO L87 Difference]: Start difference. First operand 407 states and 549 transitions. Second operand has 7 states, 5 states have (on average 11.4) internal successors, (57), 7 states have internal predecessors, (57), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 3 states have call successors, (20) [2025-03-17 05:29:56,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:29:56,281 INFO L93 Difference]: Finished difference Result 776 states and 1057 transitions. [2025-03-17 05:29:56,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 05:29:56,282 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 11.4) internal successors, (57), 7 states have internal predecessors, (57), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 3 states have call successors, (20) Word has length 154 [2025-03-17 05:29:56,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:29:56,285 INFO L225 Difference]: With dead ends: 776 [2025-03-17 05:29:56,285 INFO L226 Difference]: Without dead ends: 527 [2025-03-17 05:29:56,286 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-17 05:29:56,287 INFO L435 NwaCegarLoop]: 193 mSDtfsCounter, 83 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 05:29:56,287 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 924 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 05:29:56,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2025-03-17 05:29:56,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 404. [2025-03-17 05:29:56,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 317 states have (on average 1.2586750788643533) internal successors, (399), 320 states have internal predecessors, (399), 72 states have call successors, (72), 14 states have call predecessors, (72), 14 states have return successors, (72), 69 states have call predecessors, (72), 72 states have call successors, (72) [2025-03-17 05:29:56,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 543 transitions. [2025-03-17 05:29:56,332 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 543 transitions. Word has length 154 [2025-03-17 05:29:56,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:29:56,332 INFO L471 AbstractCegarLoop]: Abstraction has 404 states and 543 transitions. [2025-03-17 05:29:56,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 11.4) internal successors, (57), 7 states have internal predecessors, (57), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 3 states have call successors, (20) [2025-03-17 05:29:56,333 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 543 transitions. [2025-03-17 05:29:56,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2025-03-17 05:29:56,334 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:29:56,334 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:29:56,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 05:29:56,334 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:29:56,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:29:56,335 INFO L85 PathProgramCache]: Analyzing trace with hash 712862661, now seen corresponding path program 1 times [2025-03-17 05:29:56,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:29:56,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452917198] [2025-03-17 05:29:56,335 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:29:56,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:29:56,349 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 154 statements into 1 equivalence classes. [2025-03-17 05:29:56,412 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 154 of 154 statements. [2025-03-17 05:29:56,412 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:29:56,412 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:29:58,033 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 39 proven. 18 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2025-03-17 05:29:58,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:29:58,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452917198] [2025-03-17 05:29:58,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452917198] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 05:29:58,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541777626] [2025-03-17 05:29:58,034 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:29:58,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:29:58,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 05:29:58,035 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 05:29:58,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 05:29:58,128 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 154 statements into 1 equivalence classes. [2025-03-17 05:29:58,173 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 154 of 154 statements. [2025-03-17 05:29:58,173 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:29:58,173 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:29:58,181 INFO L256 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-03-17 05:29:58,186 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 05:29:58,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2025-03-17 05:29:58,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2025-03-17 05:29:58,502 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 05:29:58,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 61 [2025-03-17 05:29:58,623 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 05:29:58,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 37 [2025-03-17 05:29:58,698 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2025-03-17 05:29:58,698 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 05:29:58,923 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-17 05:29:58,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541777626] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-17 05:29:58,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-17 05:29:58,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [24, 14] total 39 [2025-03-17 05:29:58,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363939847] [2025-03-17 05:29:58,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:29:58,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 05:29:58,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:29:58,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 05:29:58,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1370, Unknown=0, NotChecked=0, Total=1482 [2025-03-17 05:29:58,925 INFO L87 Difference]: Start difference. First operand 404 states and 543 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2025-03-17 05:29:59,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:29:59,277 INFO L93 Difference]: Finished difference Result 766 states and 1037 transitions. [2025-03-17 05:29:59,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 05:29:59,278 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 154 [2025-03-17 05:29:59,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:29:59,281 INFO L225 Difference]: With dead ends: 766 [2025-03-17 05:29:59,281 INFO L226 Difference]: Without dead ends: 529 [2025-03-17 05:29:59,285 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 293 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=131, Invalid=1675, Unknown=0, NotChecked=0, Total=1806 [2025-03-17 05:29:59,286 INFO L435 NwaCegarLoop]: 215 mSDtfsCounter, 83 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 05:29:59,286 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 1262 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 05:29:59,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2025-03-17 05:29:59,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 402. [2025-03-17 05:29:59,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 315 states have (on average 1.2571428571428571) internal successors, (396), 318 states have internal predecessors, (396), 72 states have call successors, (72), 14 states have call predecessors, (72), 14 states have return successors, (72), 69 states have call predecessors, (72), 72 states have call successors, (72) [2025-03-17 05:29:59,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 540 transitions. [2025-03-17 05:29:59,331 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 540 transitions. Word has length 154 [2025-03-17 05:29:59,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:29:59,332 INFO L471 AbstractCegarLoop]: Abstraction has 402 states and 540 transitions. [2025-03-17 05:29:59,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2025-03-17 05:29:59,332 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 540 transitions. [2025-03-17 05:29:59,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2025-03-17 05:29:59,335 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:29:59,335 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:29:59,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-17 05:29:59,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:29:59,536 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:29:59,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:29:59,536 INFO L85 PathProgramCache]: Analyzing trace with hash 205389798, now seen corresponding path program 1 times [2025-03-17 05:29:59,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:29:59,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326405032] [2025-03-17 05:29:59,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:29:59,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:29:59,547 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 154 statements into 1 equivalence classes. [2025-03-17 05:29:59,577 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 154 of 154 statements. [2025-03-17 05:29:59,577 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:29:59,577 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat