./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-80.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-80.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 7435769e205a5a22a211f82999711a463f5dd426d6bac372f4ec13ff649b3c52 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 05:28:14,732 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 05:28:14,776 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 05:28:14,780 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 05:28:14,782 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 05:28:14,804 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 05:28:14,805 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 05:28:14,805 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 05:28:14,805 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 05:28:14,805 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 05:28:14,806 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 05:28:14,806 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 05:28:14,807 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 05:28:14,807 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 05:28:14,807 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 05:28:14,807 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 05:28:14,807 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 05:28:14,807 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 05:28:14,808 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 05:28:14,808 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 05:28:14,808 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 05:28:14,808 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 05:28:14,808 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 05:28:14,808 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 05:28:14,808 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 05:28:14,808 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 05:28:14,808 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 05:28:14,809 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 05:28:14,809 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 05:28:14,809 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 05:28:14,809 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 05:28:14,809 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 05:28:14,809 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 05:28:14,809 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 05:28:14,809 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 05:28:14,810 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 05:28:14,810 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 05:28:14,810 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 05:28:14,810 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 05:28:14,810 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 05:28:14,810 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 05:28:14,810 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 05:28:14,810 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 05:28:14,810 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 -> 7435769e205a5a22a211f82999711a463f5dd426d6bac372f4ec13ff649b3c52 [2025-03-17 05:28:15,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 05:28:15,076 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 05:28:15,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 05:28:15,078 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 05:28:15,078 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 05:28:15,080 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-80.i [2025-03-17 05:28:16,286 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1849769e7/6914609b1bec438aa2439be4d1eb93fd/FLAGcfda4023a [2025-03-17 05:28:16,549 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 05:28:16,549 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-80.i [2025-03-17 05:28:16,557 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1849769e7/6914609b1bec438aa2439be4d1eb93fd/FLAGcfda4023a [2025-03-17 05:28:16,856 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1849769e7/6914609b1bec438aa2439be4d1eb93fd [2025-03-17 05:28:16,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 05:28:16,859 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 05:28:16,860 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 05:28:16,860 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 05:28:16,864 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 05:28:16,865 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 05:28:16" (1/1) ... [2025-03-17 05:28:16,865 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ac4823c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:28:16, skipping insertion in model container [2025-03-17 05:28:16,865 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 05:28:16" (1/1) ... [2025-03-17 05:28:16,885 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 05:28:16,996 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-80.i[916,929] [2025-03-17 05:28:17,089 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 05:28:17,105 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 05:28:17,115 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-80.i[916,929] [2025-03-17 05:28:17,178 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 05:28:17,201 INFO L204 MainTranslator]: Completed translation [2025-03-17 05:28:17,202 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:28:17 WrapperNode [2025-03-17 05:28:17,203 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 05:28:17,204 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 05:28:17,204 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 05:28:17,205 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 05:28:17,209 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:28:17" (1/1) ... [2025-03-17 05:28:17,225 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:28:17" (1/1) ... [2025-03-17 05:28:17,279 INFO L138 Inliner]: procedures = 29, calls = 233, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 769 [2025-03-17 05:28:17,284 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 05:28:17,284 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 05:28:17,284 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 05:28:17,284 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 05:28:17,293 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:28:17" (1/1) ... [2025-03-17 05:28:17,293 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:28:17" (1/1) ... [2025-03-17 05:28:17,302 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:28:17" (1/1) ... [2025-03-17 05:28:17,334 INFO L175 MemorySlicer]: Split 199 memory accesses to 7 slices as follows [2, 6, 98, 36, 11, 23, 23]. 49 percent of accesses are in the largest equivalence class. The 19 initializations are split as follows [2, 1, 8, 3, 1, 3, 1]. The 19 writes are split as follows [0, 1, 9, 4, 1, 3, 1]. [2025-03-17 05:28:17,334 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:28:17" (1/1) ... [2025-03-17 05:28:17,334 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:28:17" (1/1) ... [2025-03-17 05:28:17,351 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:28:17" (1/1) ... [2025-03-17 05:28:17,352 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:28:17" (1/1) ... [2025-03-17 05:28:17,355 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:28:17" (1/1) ... [2025-03-17 05:28:17,356 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:28:17" (1/1) ... [2025-03-17 05:28:17,362 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 05:28:17,367 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 05:28:17,367 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 05:28:17,367 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 05:28:17,368 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:28:17" (1/1) ... [2025-03-17 05:28:17,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 05:28:17,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 05:28:17,415 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 05:28:17,427 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 05:28:17,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 05:28:17,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 05:28:17,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 05:28:17,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-17 05:28:17,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-17 05:28:17,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-17 05:28:17,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-17 05:28:17,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-03-17 05:28:17,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2025-03-17 05:28:17,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2025-03-17 05:28:17,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2025-03-17 05:28:17,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2025-03-17 05:28:17,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2025-03-17 05:28:17,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2025-03-17 05:28:17,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2025-03-17 05:28:17,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2025-03-17 05:28:17,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2025-03-17 05:28:17,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2025-03-17 05:28:17,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2025-03-17 05:28:17,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2025-03-17 05:28:17,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2025-03-17 05:28:17,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2025-03-17 05:28:17,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 05:28:17,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 05:28:17,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-17 05:28:17,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-17 05:28:17,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-17 05:28:17,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-17 05:28:17,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-03-17 05:28:17,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2025-03-17 05:28:17,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2025-03-17 05:28:17,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2025-03-17 05:28:17,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2025-03-17 05:28:17,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2025-03-17 05:28:17,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2025-03-17 05:28:17,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2025-03-17 05:28:17,455 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 05:28:17,455 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 05:28:17,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 05:28:17,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 05:28:17,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-17 05:28:17,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-17 05:28:17,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-17 05:28:17,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-17 05:28:17,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-17 05:28:17,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 05:28:17,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 05:28:17,630 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 05:28:17,632 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 05:28:18,104 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L95: havoc property_#t~mem140#1;havoc property_#t~mem141#1;havoc property_#t~mem142#1;havoc property_#t~ite146#1;havoc property_#t~mem143#1;havoc property_#t~mem144#1;havoc property_#t~mem145#1;havoc property_#t~mem147#1;havoc property_#t~mem148#1;havoc property_#t~mem149#1;havoc property_#t~mem150#1;havoc property_#t~ite155#1;havoc property_#t~mem151#1;havoc property_#t~mem152#1;havoc property_#t~mem153#1;havoc property_#t~mem154#1;havoc property_#t~ite164#1;havoc property_#t~mem163#1;havoc property_#t~mem156#1;havoc property_#t~mem157#1;havoc property_#t~mem158#1;havoc property_#t~ite162#1;havoc property_#t~mem159#1;havoc property_#t~mem160#1;havoc property_#t~mem161#1;havoc property_#t~mem167#1;havoc property_#t~mem165#1;havoc property_#t~mem166#1;havoc property_#t~short168#1;havoc property_#t~ite176#1;havoc property_#t~mem173#1;havoc property_#t~mem169#1;havoc property_#t~ite172#1;havoc property_#t~mem170#1;havoc property_#t~mem171#1;havoc property_#t~mem175#1;havoc property_#t~mem174#1;havoc property_#t~short177#1;havoc property_#t~mem180#1;havoc property_#t~mem178#1;havoc property_#t~mem179#1;havoc property_#t~ite218#1;havoc property_#t~mem214#1;havoc property_#t~mem181#1;havoc property_#t~mem182#1;havoc property_#t~ite185#1;havoc property_#t~mem183#1;havoc property_#t~mem184#1;havoc property_#t~mem186#1;havoc property_#t~ite193#1;havoc property_#t~mem187#1;havoc property_#t~mem188#1;havoc property_#t~ite191#1;havoc property_#t~mem189#1;havoc property_#t~mem190#1;havoc property_#t~mem192#1;havoc property_#t~mem194#1;havoc property_#t~ite196#1;havoc property_#t~mem195#1;havoc property_#t~ite213#1;havoc property_#t~mem197#1;havoc property_#t~mem198#1;havoc property_#t~ite201#1;havoc property_#t~mem199#1;havoc property_#t~mem200#1;havoc property_#t~mem202#1;havoc property_#t~ite209#1;havoc property_#t~mem203#1;havoc property_#t~mem204#1;havoc property_#t~ite207#1;havoc property_#t~mem205#1;havoc property_#t~mem206#1;havoc property_#t~mem208#1;havoc property_#t~mem210#1;havoc property_#t~ite212#1;havoc property_#t~mem211#1;havoc property_#t~mem217#1;havoc property_#t~mem215#1;havoc property_#t~mem216#1;havoc property_#t~short219#1;havoc property_#t~mem221#1;havoc property_#t~mem220#1;havoc property_#t~short222#1;havoc property_#t~mem224#1;havoc property_#t~mem223#1;havoc property_#t~short225#1;havoc property_#t~mem227#1;havoc property_#t~mem226#1;havoc property_#t~short228#1; [2025-03-17 05:28:18,184 INFO L? ?]: Removed 234 outVars from TransFormulas that were not future-live. [2025-03-17 05:28:18,184 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 05:28:18,196 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 05:28:18,198 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 05:28:18,198 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 05:28:18 BoogieIcfgContainer [2025-03-17 05:28:18,198 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 05:28:18,200 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 05:28:18,200 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 05:28:18,204 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 05:28:18,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 05:28:16" (1/3) ... [2025-03-17 05:28:18,205 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f3b9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 05:28:18, skipping insertion in model container [2025-03-17 05:28:18,205 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:28:17" (2/3) ... [2025-03-17 05:28:18,205 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f3b9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 05:28:18, skipping insertion in model container [2025-03-17 05:28:18,205 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 05:28:18" (3/3) ... [2025-03-17 05:28:18,206 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-80.i [2025-03-17 05:28:18,218 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 05:28:18,219 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-a_file-80.i that has 2 procedures, 148 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-17 05:28:18,262 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 05:28:18,271 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;@11860b15, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 05:28:18,273 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 05:28:18,277 INFO L276 IsEmpty]: Start isEmpty. Operand has 148 states, 128 states have (on average 1.46875) internal successors, (188), 129 states have internal predecessors, (188), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-17 05:28:18,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-03-17 05:28:18,287 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:28:18,288 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:28:18,288 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:28:18,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:28:18,293 INFO L85 PathProgramCache]: Analyzing trace with hash 2092673271, now seen corresponding path program 1 times [2025-03-17 05:28:18,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:28:18,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344277774] [2025-03-17 05:28:18,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:28:18,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:28:18,378 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-17 05:28:18,409 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-17 05:28:18,409 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:28:18,409 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:28:18,600 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2025-03-17 05:28:18,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:28:18,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344277774] [2025-03-17 05:28:18,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344277774] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 05:28:18,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998713947] [2025-03-17 05:28:18,603 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:28:18,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:28:18,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 05:28:18,606 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 05:28:18,606 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 05:28:18,754 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-17 05:28:18,831 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-17 05:28:18,831 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:28:18,831 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:28:18,835 INFO L256 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 05:28:18,841 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 05:28:18,858 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2025-03-17 05:28:18,859 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 05:28:18,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998713947] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:28:18,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 05:28:18,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-17 05:28:18,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473482332] [2025-03-17 05:28:18,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:28:18,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 05:28:18,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:28:18,885 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 05:28:18,885 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 05:28:18,891 INFO L87 Difference]: Start difference. First operand has 148 states, 128 states have (on average 1.46875) internal successors, (188), 129 states have internal predecessors, (188), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-17 05:28:18,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:28:18,919 INFO L93 Difference]: Finished difference Result 293 states and 459 transitions. [2025-03-17 05:28:18,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 05:28:18,920 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 149 [2025-03-17 05:28:18,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:28:18,925 INFO L225 Difference]: With dead ends: 293 [2025-03-17 05:28:18,925 INFO L226 Difference]: Without dead ends: 146 [2025-03-17 05:28:18,928 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 05:28:18,929 INFO L435 NwaCegarLoop]: 218 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, 218 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 05:28:18,930 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 05:28:18,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2025-03-17 05:28:18,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2025-03-17 05:28:18,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 127 states have (on average 1.4488188976377954) internal successors, (184), 127 states have internal predecessors, (184), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-17 05:28:18,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 218 transitions. [2025-03-17 05:28:18,989 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 218 transitions. Word has length 149 [2025-03-17 05:28:18,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:28:18,990 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 218 transitions. [2025-03-17 05:28:18,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-17 05:28:18,991 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 218 transitions. [2025-03-17 05:28:18,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-03-17 05:28:18,995 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:28:18,996 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:28:19,003 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 05:28:19,196 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 05:28:19,197 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:28:19,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:28:19,197 INFO L85 PathProgramCache]: Analyzing trace with hash 383894626, now seen corresponding path program 1 times [2025-03-17 05:28:19,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:28:19,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886296763] [2025-03-17 05:28:19,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:28:19,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:28:19,237 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-17 05:28:19,300 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-17 05:28:19,301 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:28:19,301 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:28:19,699 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2025-03-17 05:28:19,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:28:19,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886296763] [2025-03-17 05:28:19,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886296763] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 05:28:19,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565056801] [2025-03-17 05:28:19,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:28:19,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:28:19,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 05:28:19,704 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 05:28:19,705 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 05:28:19,855 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-17 05:28:19,920 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-17 05:28:19,921 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:28:19,921 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:28:19,925 INFO L256 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 05:28:19,932 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 05:28:19,979 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-17 05:28:19,979 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 05:28:19,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565056801] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:28:19,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 05:28:19,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-03-17 05:28:19,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607961965] [2025-03-17 05:28:19,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:28:19,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 05:28:19,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:28:19,981 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 05:28:19,981 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-17 05:28:19,981 INFO L87 Difference]: Start difference. First operand 146 states and 218 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 05:28:20,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:28:20,019 INFO L93 Difference]: Finished difference Result 294 states and 439 transitions. [2025-03-17 05:28:20,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 05:28:20,020 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 149 [2025-03-17 05:28:20,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:28:20,023 INFO L225 Difference]: With dead ends: 294 [2025-03-17 05:28:20,024 INFO L226 Difference]: Without dead ends: 149 [2025-03-17 05:28:20,025 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-17 05:28:20,026 INFO L435 NwaCegarLoop]: 215 mSDtfsCounter, 1 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 05:28:20,026 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 634 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 05:28:20,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2025-03-17 05:28:20,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 148. [2025-03-17 05:28:20,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 129 states have (on average 1.441860465116279) internal successors, (186), 129 states have internal predecessors, (186), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-17 05:28:20,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 220 transitions. [2025-03-17 05:28:20,045 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 220 transitions. Word has length 149 [2025-03-17 05:28:20,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:28:20,048 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 220 transitions. [2025-03-17 05:28:20,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 05:28:20,049 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 220 transitions. [2025-03-17 05:28:20,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-03-17 05:28:20,054 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:28:20,054 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:28:20,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-17 05:28:20,254 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 05:28:20,255 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:28:20,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:28:20,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1423559837, now seen corresponding path program 1 times [2025-03-17 05:28:20,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:28:20,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913888832] [2025-03-17 05:28:20,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:28:20,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:28:20,297 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-17 05:28:20,333 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-17 05:28:20,334 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:28:20,334 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:28:20,566 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2025-03-17 05:28:20,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:28:20,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913888832] [2025-03-17 05:28:20,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913888832] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 05:28:20,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897089433] [2025-03-17 05:28:20,567 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:28:20,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:28:20,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 05:28:20,569 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 05:28:20,571 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 05:28:20,697 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-17 05:28:20,753 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-17 05:28:20,754 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:28:20,754 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:28:20,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 05:28:20,763 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 05:28:20,792 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-17 05:28:20,792 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 05:28:20,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897089433] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:28:20,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 05:28:20,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-03-17 05:28:20,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898437440] [2025-03-17 05:28:20,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:28:20,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 05:28:20,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:28:20,794 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 05:28:20,794 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-17 05:28:20,794 INFO L87 Difference]: Start difference. First operand 148 states and 220 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 05:28:20,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:28:20,825 INFO L93 Difference]: Finished difference Result 298 states and 443 transitions. [2025-03-17 05:28:20,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 05:28:20,826 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 149 [2025-03-17 05:28:20,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:28:20,827 INFO L225 Difference]: With dead ends: 298 [2025-03-17 05:28:20,827 INFO L226 Difference]: Without dead ends: 151 [2025-03-17 05:28:20,827 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-17 05:28:20,828 INFO L435 NwaCegarLoop]: 215 mSDtfsCounter, 1 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 05:28:20,828 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 635 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 05:28:20,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2025-03-17 05:28:20,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 150. [2025-03-17 05:28:20,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 131 states have (on average 1.4351145038167938) internal successors, (188), 131 states have internal predecessors, (188), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-17 05:28:20,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 222 transitions. [2025-03-17 05:28:20,844 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 222 transitions. Word has length 149 [2025-03-17 05:28:20,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:28:20,844 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 222 transitions. [2025-03-17 05:28:20,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 05:28:20,845 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 222 transitions. [2025-03-17 05:28:20,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-03-17 05:28:20,847 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:28:20,848 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:28:20,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-17 05:28:21,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:28:21,052 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:28:21,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:28:21,053 INFO L85 PathProgramCache]: Analyzing trace with hash -536056156, now seen corresponding path program 1 times [2025-03-17 05:28:21,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:28:21,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644236312] [2025-03-17 05:28:21,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:28:21,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:28:21,083 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-17 05:28:21,110 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-17 05:28:21,111 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:28:21,111 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:28:21,349 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2025-03-17 05:28:21,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:28:21,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644236312] [2025-03-17 05:28:21,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644236312] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 05:28:21,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855171667] [2025-03-17 05:28:21,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:28:21,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:28:21,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 05:28:21,353 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 05:28:21,354 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 05:28:21,486 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-17 05:28:21,550 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-17 05:28:21,551 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:28:21,551 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:28:21,553 INFO L256 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 05:28:21,556 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 05:28:21,584 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-17 05:28:21,584 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 05:28:21,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855171667] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:28:21,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 05:28:21,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-03-17 05:28:21,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978688818] [2025-03-17 05:28:21,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:28:21,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 05:28:21,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:28:21,585 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 05:28:21,585 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-17 05:28:21,586 INFO L87 Difference]: Start difference. First operand 150 states and 222 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 05:28:21,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:28:21,612 INFO L93 Difference]: Finished difference Result 302 states and 447 transitions. [2025-03-17 05:28:21,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 05:28:21,613 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 149 [2025-03-17 05:28:21,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:28:21,615 INFO L225 Difference]: With dead ends: 302 [2025-03-17 05:28:21,615 INFO L226 Difference]: Without dead ends: 153 [2025-03-17 05:28:21,617 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-17 05:28:21,618 INFO L435 NwaCegarLoop]: 215 mSDtfsCounter, 1 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 05:28:21,618 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 637 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 05:28:21,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2025-03-17 05:28:21,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 152. [2025-03-17 05:28:21,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 133 states have (on average 1.4285714285714286) internal successors, (190), 133 states have internal predecessors, (190), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-17 05:28:21,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 224 transitions. [2025-03-17 05:28:21,632 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 224 transitions. Word has length 149 [2025-03-17 05:28:21,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:28:21,632 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 224 transitions. [2025-03-17 05:28:21,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 05:28:21,632 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 224 transitions. [2025-03-17 05:28:21,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-03-17 05:28:21,633 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:28:21,633 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:28:21,643 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 05:28:21,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:28:21,841 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:28:21,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:28:21,841 INFO L85 PathProgramCache]: Analyzing trace with hash -535132635, now seen corresponding path program 1 times [2025-03-17 05:28:21,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:28:21,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131385217] [2025-03-17 05:28:21,842 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:28:21,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:28:21,872 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-17 05:28:21,891 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-17 05:28:21,891 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:28:21,891 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:28:22,073 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2025-03-17 05:28:22,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:28:22,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131385217] [2025-03-17 05:28:22,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131385217] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 05:28:22,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318350362] [2025-03-17 05:28:22,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:28:22,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:28:22,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 05:28:22,076 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 05:28:22,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 05:28:22,233 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-17 05:28:22,286 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-17 05:28:22,286 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:28:22,287 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:28:22,290 INFO L256 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 05:28:22,292 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 05:28:22,314 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-17 05:28:22,315 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 05:28:22,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318350362] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:28:22,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 05:28:22,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2025-03-17 05:28:22,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198462435] [2025-03-17 05:28:22,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:28:22,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 05:28:22,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:28:22,316 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 05:28:22,316 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-17 05:28:22,316 INFO L87 Difference]: Start difference. First operand 152 states and 224 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 05:28:22,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:28:22,333 INFO L93 Difference]: Finished difference Result 305 states and 450 transitions. [2025-03-17 05:28:22,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 05:28:22,334 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 149 [2025-03-17 05:28:22,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:28:22,335 INFO L225 Difference]: With dead ends: 305 [2025-03-17 05:28:22,335 INFO L226 Difference]: Without dead ends: 154 [2025-03-17 05:28:22,335 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 05:28:22,336 INFO L435 NwaCegarLoop]: 216 mSDtfsCounter, 0 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 637 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 05:28:22,336 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 637 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 05:28:22,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2025-03-17 05:28:22,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2025-03-17 05:28:22,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 135 states have (on average 1.4222222222222223) internal successors, (192), 135 states have internal predecessors, (192), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-17 05:28:22,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 226 transitions. [2025-03-17 05:28:22,345 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 226 transitions. Word has length 149 [2025-03-17 05:28:22,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:28:22,347 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 226 transitions. [2025-03-17 05:28:22,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 05:28:22,347 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 226 transitions. [2025-03-17 05:28:22,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-17 05:28:22,348 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:28:22,348 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:28:22,361 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-17 05:28:22,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:28:22,549 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:28:22,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:28:22,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1713201859, now seen corresponding path program 1 times [2025-03-17 05:28:22,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:28:22,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408899747] [2025-03-17 05:28:22,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:28:22,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:28:22,577 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-17 05:28:22,710 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-17 05:28:22,710 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:28:22,710 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:28:23,204 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-17 05:28:23,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:28:23,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408899747] [2025-03-17 05:28:23,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408899747] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:28:23,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:28:23,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 05:28:23,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097655540] [2025-03-17 05:28:23,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:28:23,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 05:28:23,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:28:23,206 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 05:28:23,206 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 05:28:23,206 INFO L87 Difference]: Start difference. First operand 154 states and 226 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 05:28:23,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:28:23,273 INFO L93 Difference]: Finished difference Result 311 states and 458 transitions. [2025-03-17 05:28:23,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 05:28:23,274 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 151 [2025-03-17 05:28:23,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:28:23,275 INFO L225 Difference]: With dead ends: 311 [2025-03-17 05:28:23,275 INFO L226 Difference]: Without dead ends: 158 [2025-03-17 05:28:23,276 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 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 05:28:23,276 INFO L435 NwaCegarLoop]: 212 mSDtfsCounter, 2 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 05:28:23,276 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 818 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 05:28:23,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2025-03-17 05:28:23,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 157. [2025-03-17 05:28:23,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 138 states have (on average 1.4202898550724639) internal successors, (196), 138 states have internal predecessors, (196), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-17 05:28:23,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 230 transitions. [2025-03-17 05:28:23,286 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 230 transitions. Word has length 151 [2025-03-17 05:28:23,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:28:23,286 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 230 transitions. [2025-03-17 05:28:23,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 05:28:23,287 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 230 transitions. [2025-03-17 05:28:23,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-17 05:28:23,288 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:28:23,288 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:28:23,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 05:28:23,288 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:28:23,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:28:23,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1337000956, now seen corresponding path program 1 times [2025-03-17 05:28:23,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:28:23,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632858739] [2025-03-17 05:28:23,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:28:23,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:28:23,320 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-17 05:28:23,388 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-17 05:28:23,388 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:28:23,388 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:28:25,479 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-17 05:28:25,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:28:25,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632858739] [2025-03-17 05:28:25,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632858739] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:28:25,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:28:25,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-17 05:28:25,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218333875] [2025-03-17 05:28:25,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:28:25,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 05:28:25,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:28:25,481 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 05:28:25,482 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-03-17 05:28:25,482 INFO L87 Difference]: Start difference. First operand 157 states and 230 transitions. Second operand has 9 states, 8 states have (on average 8.625) internal successors, (69), 9 states have internal predecessors, (69), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-17 05:28:26,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:28:26,058 INFO L93 Difference]: Finished difference Result 475 states and 699 transitions. [2025-03-17 05:28:26,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 05:28:26,060 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.625) internal successors, (69), 9 states have internal predecessors, (69), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 151 [2025-03-17 05:28:26,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:28:26,062 INFO L225 Difference]: With dead ends: 475 [2025-03-17 05:28:26,062 INFO L226 Difference]: Without dead ends: 319 [2025-03-17 05:28:26,062 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2025-03-17 05:28:26,063 INFO L435 NwaCegarLoop]: 185 mSDtfsCounter, 272 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 05:28:26,063 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 1234 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 05:28:26,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2025-03-17 05:28:26,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 265. [2025-03-17 05:28:26,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 235 states have (on average 1.421276595744681) internal successors, (334), 236 states have internal predecessors, (334), 27 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2025-03-17 05:28:26,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 388 transitions. [2025-03-17 05:28:26,090 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 388 transitions. Word has length 151 [2025-03-17 05:28:26,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:28:26,091 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 388 transitions. [2025-03-17 05:28:26,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.625) internal successors, (69), 9 states have internal predecessors, (69), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-17 05:28:26,091 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 388 transitions. [2025-03-17 05:28:26,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-17 05:28:26,092 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:28:26,092 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:28:26,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 05:28:26,093 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:28:26,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:28:26,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1960893987, now seen corresponding path program 1 times [2025-03-17 05:28:26,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:28:26,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422777177] [2025-03-17 05:28:26,094 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:28:26,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:28:26,114 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-17 05:28:26,227 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-17 05:28:26,227 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:28:26,227 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:28:27,987 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-17 05:28:27,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:28:27,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422777177] [2025-03-17 05:28:27,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422777177] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:28:27,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:28:27,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 05:28:27,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489946990] [2025-03-17 05:28:27,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:28:27,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-17 05:28:27,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:28:27,990 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-17 05:28:27,990 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-17 05:28:27,990 INFO L87 Difference]: Start difference. First operand 265 states and 388 transitions. Second operand has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 10 states have internal predecessors, (69), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-17 05:28:28,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:28:28,868 INFO L93 Difference]: Finished difference Result 535 states and 781 transitions. [2025-03-17 05:28:28,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 05:28:28,868 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 10 states have internal predecessors, (69), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 151 [2025-03-17 05:28:28,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:28:28,870 INFO L225 Difference]: With dead ends: 535 [2025-03-17 05:28:28,870 INFO L226 Difference]: Without dead ends: 271 [2025-03-17 05:28:28,871 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2025-03-17 05:28:28,872 INFO L435 NwaCegarLoop]: 191 mSDtfsCounter, 153 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 1360 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-17 05:28:28,873 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 1360 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-17 05:28:28,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2025-03-17 05:28:28,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 268. [2025-03-17 05:28:28,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 238 states have (on average 1.415966386554622) internal successors, (337), 239 states have internal predecessors, (337), 27 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2025-03-17 05:28:28,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 391 transitions. [2025-03-17 05:28:28,898 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 391 transitions. Word has length 151 [2025-03-17 05:28:28,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:28:28,899 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 391 transitions. [2025-03-17 05:28:28,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 10 states have internal predecessors, (69), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-17 05:28:28,899 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 391 transitions. [2025-03-17 05:28:28,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-17 05:28:28,901 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:28:28,901 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:28:28,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 05:28:28,901 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:28:28,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:28:28,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1552069762, now seen corresponding path program 1 times [2025-03-17 05:28:28,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:28:28,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027900982] [2025-03-17 05:28:28,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:28:28,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:28:28,940 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-17 05:28:29,016 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-17 05:28:29,016 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:28:29,016 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:28:31,559 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-17 05:28:31,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:28:31,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027900982] [2025-03-17 05:28:31,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027900982] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:28:31,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:28:31,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2025-03-17 05:28:31,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106123999] [2025-03-17 05:28:31,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:28:31,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-17 05:28:31,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:28:31,560 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-17 05:28:31,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2025-03-17 05:28:31,561 INFO L87 Difference]: Start difference. First operand 268 states and 391 transitions. Second operand has 17 states, 16 states have (on average 4.3125) internal successors, (69), 17 states have internal predecessors, (69), 4 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2025-03-17 05:28:34,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:28:34,916 INFO L93 Difference]: Finished difference Result 1067 states and 1540 transitions. [2025-03-17 05:28:34,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-17 05:28:34,917 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.3125) internal successors, (69), 17 states have internal predecessors, (69), 4 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 151 [2025-03-17 05:28:34,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:28:34,923 INFO L225 Difference]: With dead ends: 1067 [2025-03-17 05:28:34,923 INFO L226 Difference]: Without dead ends: 800 [2025-03-17 05:28:34,925 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=201, Invalid=791, Unknown=0, NotChecked=0, Total=992 [2025-03-17 05:28:34,925 INFO L435 NwaCegarLoop]: 258 mSDtfsCounter, 1810 mSDsluCounter, 2178 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1810 SdHoareTripleChecker+Valid, 2436 SdHoareTripleChecker+Invalid, 1496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 1273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-17 05:28:34,925 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1810 Valid, 2436 Invalid, 1496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 1273 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-17 05:28:34,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2025-03-17 05:28:34,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 547. [2025-03-17 05:28:34,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 488 states have (on average 1.4118852459016393) internal successors, (689), 491 states have internal predecessors, (689), 50 states have call successors, (50), 8 states have call predecessors, (50), 8 states have return successors, (50), 47 states have call predecessors, (50), 50 states have call successors, (50) [2025-03-17 05:28:34,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 789 transitions. [2025-03-17 05:28:34,974 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 789 transitions. Word has length 151 [2025-03-17 05:28:34,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:28:34,975 INFO L471 AbstractCegarLoop]: Abstraction has 547 states and 789 transitions. [2025-03-17 05:28:34,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.3125) internal successors, (69), 17 states have internal predecessors, (69), 4 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2025-03-17 05:28:34,976 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 789 transitions. [2025-03-17 05:28:34,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-17 05:28:34,978 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:28:34,978 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:28:34,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 05:28:34,979 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:28:34,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:28:34,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1041535585, now seen corresponding path program 1 times [2025-03-17 05:28:34,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:28:34,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477687540] [2025-03-17 05:28:34,979 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:28:34,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:28:35,000 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-17 05:28:35,045 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-17 05:28:35,046 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:28:35,046 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:28:35,386 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-17 05:28:35,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:28:35,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477687540] [2025-03-17 05:28:35,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477687540] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:28:35,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:28:35,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 05:28:35,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795758714] [2025-03-17 05:28:35,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:28:35,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 05:28:35,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:28:35,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 05:28:35,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 05:28:35,388 INFO L87 Difference]: Start difference. First operand 547 states and 789 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 05:28:35,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:28:35,675 INFO L93 Difference]: Finished difference Result 1281 states and 1846 transitions. [2025-03-17 05:28:35,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 05:28:35,675 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 151 [2025-03-17 05:28:35,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:28:35,678 INFO L225 Difference]: With dead ends: 1281 [2025-03-17 05:28:35,678 INFO L226 Difference]: Without dead ends: 735 [2025-03-17 05:28:35,680 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-17 05:28:35,680 INFO L435 NwaCegarLoop]: 351 mSDtfsCounter, 177 mSDsluCounter, 1165 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 1516 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 05:28:35,680 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 1516 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 05:28:35,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2025-03-17 05:28:35,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 606. [2025-03-17 05:28:35,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 531 states have (on average 1.39924670433145) internal successors, (743), 535 states have internal predecessors, (743), 63 states have call successors, (63), 11 states have call predecessors, (63), 11 states have return successors, (63), 59 states have call predecessors, (63), 63 states have call successors, (63) [2025-03-17 05:28:35,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 869 transitions. [2025-03-17 05:28:35,735 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 869 transitions. Word has length 151 [2025-03-17 05:28:35,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:28:35,737 INFO L471 AbstractCegarLoop]: Abstraction has 606 states and 869 transitions. [2025-03-17 05:28:35,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 05:28:35,737 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 869 transitions. [2025-03-17 05:28:35,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-17 05:28:35,739 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:28:35,739 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:28:35,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-17 05:28:35,739 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:28:35,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:28:35,740 INFO L85 PathProgramCache]: Analyzing trace with hash -364007484, now seen corresponding path program 1 times [2025-03-17 05:28:35,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:28:35,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396995249] [2025-03-17 05:28:35,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:28:35,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:28:35,759 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-17 05:28:35,795 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-17 05:28:35,795 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:28:35,795 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:28:36,042 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-17 05:28:36,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:28:36,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396995249] [2025-03-17 05:28:36,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396995249] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:28:36,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:28:36,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 05:28:36,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366243345] [2025-03-17 05:28:36,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:28:36,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 05:28:36,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:28:36,045 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 05:28:36,045 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 05:28:36,046 INFO L87 Difference]: Start difference. First operand 606 states and 869 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 05:28:36,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:28:36,331 INFO L93 Difference]: Finished difference Result 1282 states and 1838 transitions. [2025-03-17 05:28:36,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 05:28:36,332 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 151 [2025-03-17 05:28:36,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:28:36,336 INFO L225 Difference]: With dead ends: 1282 [2025-03-17 05:28:36,337 INFO L226 Difference]: Without dead ends: 735 [2025-03-17 05:28:36,338 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-17 05:28:36,339 INFO L435 NwaCegarLoop]: 208 mSDtfsCounter, 177 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 05:28:36,339 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 914 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 05:28:36,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2025-03-17 05:28:36,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 606. [2025-03-17 05:28:36,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 531 states have (on average 1.3954802259887005) internal successors, (741), 535 states have internal predecessors, (741), 63 states have call successors, (63), 11 states have call predecessors, (63), 11 states have return successors, (63), 59 states have call predecessors, (63), 63 states have call successors, (63) [2025-03-17 05:28:36,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 867 transitions. [2025-03-17 05:28:36,398 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 867 transitions. Word has length 151 [2025-03-17 05:28:36,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:28:36,398 INFO L471 AbstractCegarLoop]: Abstraction has 606 states and 867 transitions. [2025-03-17 05:28:36,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 05:28:36,398 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 867 transitions. [2025-03-17 05:28:36,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-17 05:28:36,399 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:28:36,400 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:28:36,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-17 05:28:36,400 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:28:36,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:28:36,400 INFO L85 PathProgramCache]: Analyzing trace with hash -772831709, now seen corresponding path program 1 times [2025-03-17 05:28:36,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:28:36,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149821209] [2025-03-17 05:28:36,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:28:36,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:28:36,418 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-17 05:28:36,441 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-17 05:28:36,442 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:28:36,442 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:28:36,754 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-17 05:28:36,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:28:36,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149821209] [2025-03-17 05:28:36,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149821209] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:28:36,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:28:36,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-17 05:28:36,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275225585] [2025-03-17 05:28:36,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:28:36,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 05:28:36,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:28:36,756 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 05:28:36,756 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-17 05:28:36,757 INFO L87 Difference]: Start difference. First operand 606 states and 867 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 05:28:37,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:28:37,228 INFO L93 Difference]: Finished difference Result 1405 states and 2012 transitions. [2025-03-17 05:28:37,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 05:28:37,229 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 151 [2025-03-17 05:28:37,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:28:37,234 INFO L225 Difference]: With dead ends: 1405 [2025-03-17 05:28:37,235 INFO L226 Difference]: Without dead ends: 858 [2025-03-17 05:28:37,236 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2025-03-17 05:28:37,237 INFO L435 NwaCegarLoop]: 313 mSDtfsCounter, 176 mSDsluCounter, 1785 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 2098 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 05:28:37,237 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 2098 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 05:28:37,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2025-03-17 05:28:37,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 618. [2025-03-17 05:28:37,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 543 states have (on average 1.3941068139963169) internal successors, (757), 547 states have internal predecessors, (757), 63 states have call successors, (63), 11 states have call predecessors, (63), 11 states have return successors, (63), 59 states have call predecessors, (63), 63 states have call successors, (63) [2025-03-17 05:28:37,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 883 transitions. [2025-03-17 05:28:37,294 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 883 transitions. Word has length 151 [2025-03-17 05:28:37,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:28:37,295 INFO L471 AbstractCegarLoop]: Abstraction has 618 states and 883 transitions. [2025-03-17 05:28:37,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 05:28:37,295 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 883 transitions. [2025-03-17 05:28:37,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-17 05:28:37,296 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:28:37,297 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:28:37,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-17 05:28:37,297 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:28:37,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:28:37,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1769904062, now seen corresponding path program 1 times [2025-03-17 05:28:37,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:28:37,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091759049] [2025-03-17 05:28:37,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:28:37,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:28:37,320 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-17 05:28:37,378 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-17 05:28:37,378 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:28:37,378 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:28:38,418 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-17 05:28:38,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:28:38,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091759049] [2025-03-17 05:28:38,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091759049] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:28:38,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:28:38,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-03-17 05:28:38,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113908800] [2025-03-17 05:28:38,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:28:38,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-17 05:28:38,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:28:38,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-17 05:28:38,420 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2025-03-17 05:28:38,420 INFO L87 Difference]: Start difference. First operand 618 states and 883 transitions. Second operand has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 05:28:39,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:28:39,586 INFO L93 Difference]: Finished difference Result 1326 states and 1884 transitions. [2025-03-17 05:28:39,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-17 05:28:39,587 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 151 [2025-03-17 05:28:39,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:28:39,591 INFO L225 Difference]: With dead ends: 1326 [2025-03-17 05:28:39,593 INFO L226 Difference]: Without dead ends: 767 [2025-03-17 05:28:39,594 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2025-03-17 05:28:39,594 INFO L435 NwaCegarLoop]: 442 mSDtfsCounter, 690 mSDsluCounter, 3602 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 4044 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-17 05:28:39,595 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 4044 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-17 05:28:39,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2025-03-17 05:28:39,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 640. [2025-03-17 05:28:39,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 556 states have (on average 1.3848920863309353) internal successors, (770), 560 states have internal predecessors, (770), 70 states have call successors, (70), 13 states have call predecessors, (70), 13 states have return successors, (70), 66 states have call predecessors, (70), 70 states have call successors, (70) [2025-03-17 05:28:39,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 910 transitions. [2025-03-17 05:28:39,652 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 910 transitions. Word has length 151 [2025-03-17 05:28:39,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:28:39,653 INFO L471 AbstractCegarLoop]: Abstraction has 640 states and 910 transitions. [2025-03-17 05:28:39,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 05:28:39,653 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 910 transitions. [2025-03-17 05:28:39,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-17 05:28:39,655 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:28:39,656 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:28:39,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-17 05:28:39,656 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:28:39,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:28:39,657 INFO L85 PathProgramCache]: Analyzing trace with hash 471932772, now seen corresponding path program 1 times [2025-03-17 05:28:39,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:28:39,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200042108] [2025-03-17 05:28:39,657 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:28:39,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:28:39,678 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-17 05:28:39,708 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-17 05:28:39,709 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:28:39,709 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:28:40,495 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-17 05:28:40,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:28:40,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200042108] [2025-03-17 05:28:40,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200042108] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:28:40,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:28:40,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 05:28:40,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923073655] [2025-03-17 05:28:40,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:28:40,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-17 05:28:40,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:28:40,496 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-17 05:28:40,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-03-17 05:28:40,497 INFO L87 Difference]: Start difference. First operand 640 states and 910 transitions. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 05:28:41,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:28:41,367 INFO L93 Difference]: Finished difference Result 1345 states and 1906 transitions. [2025-03-17 05:28:41,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-17 05:28:41,368 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 151 [2025-03-17 05:28:41,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:28:41,371 INFO L225 Difference]: With dead ends: 1345 [2025-03-17 05:28:41,371 INFO L226 Difference]: Without dead ends: 774 [2025-03-17 05:28:41,372 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2025-03-17 05:28:41,373 INFO L435 NwaCegarLoop]: 327 mSDtfsCounter, 1165 mSDsluCounter, 1735 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1165 SdHoareTripleChecker+Valid, 2062 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-17 05:28:41,373 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1165 Valid, 2062 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-17 05:28:41,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2025-03-17 05:28:41,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 753. [2025-03-17 05:28:41,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 657 states have (on average 1.386605783866058) internal successors, (911), 662 states have internal predecessors, (911), 80 states have call successors, (80), 15 states have call predecessors, (80), 15 states have return successors, (80), 75 states have call predecessors, (80), 80 states have call successors, (80) [2025-03-17 05:28:41,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1071 transitions. [2025-03-17 05:28:41,466 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1071 transitions. Word has length 151 [2025-03-17 05:28:41,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:28:41,466 INFO L471 AbstractCegarLoop]: Abstraction has 753 states and 1071 transitions. [2025-03-17 05:28:41,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 05:28:41,466 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1071 transitions. [2025-03-17 05:28:41,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-17 05:28:41,468 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:28:41,469 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:28:41,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-17 05:28:41,469 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:28:41,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:28:41,469 INFO L85 PathProgramCache]: Analyzing trace with hash -525139581, now seen corresponding path program 1 times [2025-03-17 05:28:41,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:28:41,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652392820] [2025-03-17 05:28:41,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:28:41,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:28:41,489 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-17 05:28:41,505 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-17 05:28:41,506 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:28:41,506 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:28:42,903 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-17 05:28:42,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:28:42,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652392820] [2025-03-17 05:28:42,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652392820] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:28:42,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:28:42,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-17 05:28:42,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881474325] [2025-03-17 05:28:42,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:28:42,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 05:28:42,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:28:42,905 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 05:28:42,905 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2025-03-17 05:28:42,905 INFO L87 Difference]: Start difference. First operand 753 states and 1071 transitions. Second operand has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 12 states have internal predecessors, (69), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-17 05:28:44,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:28:44,512 INFO L93 Difference]: Finished difference Result 1550 states and 2201 transitions. [2025-03-17 05:28:44,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-17 05:28:44,515 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 12 states have internal predecessors, (69), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 151 [2025-03-17 05:28:44,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:28:44,520 INFO L225 Difference]: With dead ends: 1550 [2025-03-17 05:28:44,520 INFO L226 Difference]: Without dead ends: 866 [2025-03-17 05:28:44,522 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2025-03-17 05:28:44,523 INFO L435 NwaCegarLoop]: 420 mSDtfsCounter, 687 mSDsluCounter, 2546 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 2966 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-17 05:28:44,523 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 2966 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-17 05:28:44,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2025-03-17 05:28:44,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 758. [2025-03-17 05:28:44,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 662 states have (on average 1.3836858006042296) internal successors, (916), 667 states have internal predecessors, (916), 80 states have call successors, (80), 15 states have call predecessors, (80), 15 states have return successors, (80), 75 states have call predecessors, (80), 80 states have call successors, (80) [2025-03-17 05:28:44,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 1076 transitions. [2025-03-17 05:28:44,578 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 1076 transitions. Word has length 151 [2025-03-17 05:28:44,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:28:44,578 INFO L471 AbstractCegarLoop]: Abstraction has 758 states and 1076 transitions. [2025-03-17 05:28:44,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 12 states have internal predecessors, (69), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-17 05:28:44,578 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 1076 transitions. [2025-03-17 05:28:44,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2025-03-17 05:28:44,580 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:28:44,580 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:28:44,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-17 05:28:44,580 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:28:44,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:28:44,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1525197980, now seen corresponding path program 1 times [2025-03-17 05:28:44,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:28:44,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056017450] [2025-03-17 05:28:44,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:28:44,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:28:44,598 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-03-17 05:28:44,605 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-03-17 05:28:44,606 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:28:44,606 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:28:44,792 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-17 05:28:44,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:28:44,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056017450] [2025-03-17 05:28:44,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056017450] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:28:44,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:28:44,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 05:28:44,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322661200] [2025-03-17 05:28:44,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:28:44,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 05:28:44,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:28:44,794 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 05:28:44,795 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 05:28:44,795 INFO L87 Difference]: Start difference. First operand 758 states and 1076 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 05:28:44,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:28:44,946 INFO L93 Difference]: Finished difference Result 1458 states and 2068 transitions. [2025-03-17 05:28:44,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 05:28:44,947 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 152 [2025-03-17 05:28:44,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:28:44,952 INFO L225 Difference]: With dead ends: 1458 [2025-03-17 05:28:44,952 INFO L226 Difference]: Without dead ends: 769 [2025-03-17 05:28:44,953 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-17 05:28:44,955 INFO L435 NwaCegarLoop]: 290 mSDtfsCounter, 172 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 1329 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 05:28:44,955 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 1329 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 05:28:44,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2025-03-17 05:28:45,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 767. [2025-03-17 05:28:45,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 671 states have (on average 1.3785394932935917) internal successors, (925), 676 states have internal predecessors, (925), 80 states have call successors, (80), 15 states have call predecessors, (80), 15 states have return successors, (80), 75 states have call predecessors, (80), 80 states have call successors, (80) [2025-03-17 05:28:45,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 1085 transitions. [2025-03-17 05:28:45,011 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 1085 transitions. Word has length 152 [2025-03-17 05:28:45,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:28:45,012 INFO L471 AbstractCegarLoop]: Abstraction has 767 states and 1085 transitions. [2025-03-17 05:28:45,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 05:28:45,012 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 1085 transitions. [2025-03-17 05:28:45,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-03-17 05:28:45,014 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:28:45,014 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:28:45,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-17 05:28:45,014 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:28:45,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:28:45,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1052369856, now seen corresponding path program 1 times [2025-03-17 05:28:45,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:28:45,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674494853] [2025-03-17 05:28:45,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:28:45,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:28:45,032 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-17 05:28:45,065 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-17 05:28:45,066 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:28:45,066 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:28:45,973 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-17 05:28:45,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:28:45,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674494853] [2025-03-17 05:28:45,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674494853] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:28:45,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:28:45,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2025-03-17 05:28:45,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657006770] [2025-03-17 05:28:45,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:28:45,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-17 05:28:45,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:28:45,975 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-17 05:28:45,975 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2025-03-17 05:28:45,975 INFO L87 Difference]: Start difference. First operand 767 states and 1085 transitions. Second operand has 16 states, 16 states have (on average 4.4375) internal successors, (71), 16 states have internal predecessors, (71), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-17 05:28:47,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:28:47,580 INFO L93 Difference]: Finished difference Result 1861 states and 2637 transitions. [2025-03-17 05:28:47,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-17 05:28:47,582 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.4375) internal successors, (71), 16 states have internal predecessors, (71), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 153 [2025-03-17 05:28:47,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:28:47,586 INFO L225 Difference]: With dead ends: 1861 [2025-03-17 05:28:47,586 INFO L226 Difference]: Without dead ends: 1163 [2025-03-17 05:28:47,588 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=156, Invalid=656, Unknown=0, NotChecked=0, Total=812 [2025-03-17 05:28:47,588 INFO L435 NwaCegarLoop]: 514 mSDtfsCounter, 789 mSDsluCounter, 3959 mSDsCounter, 0 mSdLazyCounter, 1623 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 4473 SdHoareTripleChecker+Invalid, 1717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-17 05:28:47,588 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 4473 Invalid, 1717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1623 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-17 05:28:47,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2025-03-17 05:28:47,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 796. [2025-03-17 05:28:47,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 700 states have (on average 1.3828571428571428) internal successors, (968), 705 states have internal predecessors, (968), 80 states have call successors, (80), 15 states have call predecessors, (80), 15 states have return successors, (80), 75 states have call predecessors, (80), 80 states have call successors, (80) [2025-03-17 05:28:47,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1128 transitions. [2025-03-17 05:28:47,655 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1128 transitions. Word has length 153 [2025-03-17 05:28:47,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:28:47,656 INFO L471 AbstractCegarLoop]: Abstraction has 796 states and 1128 transitions. [2025-03-17 05:28:47,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.4375) internal successors, (71), 16 states have internal predecessors, (71), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-17 05:28:47,656 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1128 transitions. [2025-03-17 05:28:47,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-03-17 05:28:47,657 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:28:47,657 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:28:47,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-17 05:28:47,658 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:28:47,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:28:47,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1000760606, now seen corresponding path program 1 times [2025-03-17 05:28:47,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:28:47,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780707971] [2025-03-17 05:28:47,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:28:47,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:28:47,676 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-17 05:28:47,699 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-17 05:28:47,700 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:28:47,700 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:28:48,348 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-17 05:28:48,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:28:48,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780707971] [2025-03-17 05:28:48,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780707971] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:28:48,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:28:48,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-17 05:28:48,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794177145] [2025-03-17 05:28:48,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:28:48,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 05:28:48,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:28:48,350 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 05:28:48,350 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-17 05:28:48,350 INFO L87 Difference]: Start difference. First operand 796 states and 1128 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 05:28:49,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:28:49,059 INFO L93 Difference]: Finished difference Result 1890 states and 2678 transitions. [2025-03-17 05:28:49,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 05:28:49,061 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 153 [2025-03-17 05:28:49,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:28:49,064 INFO L225 Difference]: With dead ends: 1890 [2025-03-17 05:28:49,065 INFO L226 Difference]: Without dead ends: 1163 [2025-03-17 05:28:49,066 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2025-03-17 05:28:49,066 INFO L435 NwaCegarLoop]: 365 mSDtfsCounter, 722 mSDsluCounter, 1457 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 1822 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-17 05:28:49,066 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 1822 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-17 05:28:49,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2025-03-17 05:28:49,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 815. [2025-03-17 05:28:49,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 719 states have (on average 1.383866481223922) internal successors, (995), 724 states have internal predecessors, (995), 80 states have call successors, (80), 15 states have call predecessors, (80), 15 states have return successors, (80), 75 states have call predecessors, (80), 80 states have call successors, (80) [2025-03-17 05:28:49,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1155 transitions. [2025-03-17 05:28:49,212 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1155 transitions. Word has length 153 [2025-03-17 05:28:49,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:28:49,212 INFO L471 AbstractCegarLoop]: Abstraction has 815 states and 1155 transitions. [2025-03-17 05:28:49,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 05:28:49,212 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1155 transitions. [2025-03-17 05:28:49,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-03-17 05:28:49,214 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:28:49,214 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:28:49,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-17 05:28:49,214 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:28:49,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:28:49,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1997832959, now seen corresponding path program 1 times [2025-03-17 05:28:49,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:28:49,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582782076] [2025-03-17 05:28:49,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:28:49,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:28:49,242 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-17 05:28:49,261 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-17 05:28:49,262 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:28:49,262 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:28:49,977 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-17 05:28:49,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:28:49,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582782076] [2025-03-17 05:28:49,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582782076] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:28:49,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:28:49,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-17 05:28:49,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339074163] [2025-03-17 05:28:49,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:28:49,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 05:28:49,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:28:49,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 05:28:49,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2025-03-17 05:28:49,981 INFO L87 Difference]: Start difference. First operand 815 states and 1155 transitions. Second operand has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 05:28:50,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:28:50,854 INFO L93 Difference]: Finished difference Result 1914 states and 2710 transitions. [2025-03-17 05:28:50,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-17 05:28:50,855 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 153 [2025-03-17 05:28:50,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:28:50,858 INFO L225 Difference]: With dead ends: 1914 [2025-03-17 05:28:50,858 INFO L226 Difference]: Without dead ends: 1168 [2025-03-17 05:28:50,860 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2025-03-17 05:28:50,860 INFO L435 NwaCegarLoop]: 589 mSDtfsCounter, 511 mSDsluCounter, 2894 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 3483 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-17 05:28:50,861 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 3483 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 887 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-17 05:28:50,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2025-03-17 05:28:50,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 817. [2025-03-17 05:28:50,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 721 states have (on average 1.3828016643550625) internal successors, (997), 726 states have internal predecessors, (997), 80 states have call successors, (80), 15 states have call predecessors, (80), 15 states have return successors, (80), 75 states have call predecessors, (80), 80 states have call successors, (80) [2025-03-17 05:28:50,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1157 transitions. [2025-03-17 05:28:50,920 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1157 transitions. Word has length 153 [2025-03-17 05:28:50,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:28:50,921 INFO L471 AbstractCegarLoop]: Abstraction has 817 states and 1157 transitions. [2025-03-17 05:28:50,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 05:28:50,921 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1157 transitions. [2025-03-17 05:28:50,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-03-17 05:28:50,923 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:28:50,923 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:28:50,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-17 05:28:50,923 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:28:50,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:28:50,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1063685983, now seen corresponding path program 1 times [2025-03-17 05:28:50,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:28:50,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745584620] [2025-03-17 05:28:50,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:28:50,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:28:50,965 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-17 05:28:51,044 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-17 05:28:51,044 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:28:51,044 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat