./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 e2fb8bed 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-?-e2fb8be-m [2025-03-08 16:21:44,711 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 16:21:44,763 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 16:21:44,766 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 16:21:44,767 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 16:21:44,779 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 16:21:44,779 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 16:21:44,780 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 16:21:44,780 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 16:21:44,780 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 16:21:44,781 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 16:21:44,781 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 16:21:44,781 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 16:21:44,781 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 16:21:44,782 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 16:21:44,782 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 16:21:44,782 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 16:21:44,782 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 16:21:44,782 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 16:21:44,782 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 16:21:44,782 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 16:21:44,782 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 16:21:44,782 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 16:21:44,783 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 16:21:44,783 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 16:21:44,783 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 16:21:44,783 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 16:21:44,783 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 16:21:44,783 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 16:21:44,783 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 16:21:44,783 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 16:21:44,783 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 16:21:44,783 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 16:21:44,784 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 16:21:44,784 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 16:21:44,784 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 16:21:44,784 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 16:21:44,784 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 16:21:44,784 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 16:21:44,784 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 16:21:44,784 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 16:21:44,784 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 16:21:44,784 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 16:21:44,784 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 [2025-03-08 16:21:44,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 16:21:44,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 16:21:44,995 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 16:21:44,996 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 16:21:44,996 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 16:21:44,998 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-80.i [2025-03-08 16:21:46,125 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30ed24aa8/029bd1649a7140d1872c9dc9451e8e3a/FLAG1e24f8823 [2025-03-08 16:21:46,381 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 16:21:46,383 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-80.i [2025-03-08 16:21:46,392 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30ed24aa8/029bd1649a7140d1872c9dc9451e8e3a/FLAG1e24f8823 [2025-03-08 16:21:46,698 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30ed24aa8/029bd1649a7140d1872c9dc9451e8e3a [2025-03-08 16:21:46,699 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 16:21:46,700 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 16:21:46,702 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 16:21:46,702 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 16:21:46,706 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 16:21:46,707 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 04:21:46" (1/1) ... [2025-03-08 16:21:46,708 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16439b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:21:46, skipping insertion in model container [2025-03-08 16:21:46,708 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 04:21:46" (1/1) ... [2025-03-08 16:21:46,723 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 16:21:46,823 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] [2025-03-08 16:21:46,890 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 16:21:46,905 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 16:21:46,915 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] [2025-03-08 16:21:46,967 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 16:21:46,983 INFO L204 MainTranslator]: Completed translation [2025-03-08 16:21:46,983 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:21:46 WrapperNode [2025-03-08 16:21:46,984 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 16:21:46,985 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 16:21:46,985 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 16:21:46,985 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 16:21:46,989 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:21:46" (1/1) ... [2025-03-08 16:21:47,004 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:21:46" (1/1) ... [2025-03-08 16:21:47,038 INFO L138 Inliner]: procedures = 29, calls = 233, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 769 [2025-03-08 16:21:47,038 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 16:21:47,039 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 16:21:47,039 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 16:21:47,039 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 16:21:47,047 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:21:46" (1/1) ... [2025-03-08 16:21:47,047 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:21:46" (1/1) ... [2025-03-08 16:21:47,054 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:21:46" (1/1) ... [2025-03-08 16:21:47,071 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]. [2025-03-08 16:21:47,072 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:21:46" (1/1) ... [2025-03-08 16:21:47,072 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:21:46" (1/1) ... [2025-03-08 16:21:47,088 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:21:46" (1/1) ... [2025-03-08 16:21:47,089 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:21:46" (1/1) ... [2025-03-08 16:21:47,091 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:21:46" (1/1) ... [2025-03-08 16:21:47,097 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:21:46" (1/1) ... [2025-03-08 16:21:47,104 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 16:21:47,105 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 16:21:47,105 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 16:21:47,105 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 16:21:47,106 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:21:46" (1/1) ... [2025-03-08 16:21:47,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 16:21:47,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 16:21:47,133 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) [2025-03-08 16:21:47,138 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 [2025-03-08 16:21:47,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 16:21:47,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-08 16:21:47,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-08 16:21:47,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-08 16:21:47,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-08 16:21:47,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-08 16:21:47,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-08 16:21:47,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-03-08 16:21:47,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2025-03-08 16:21:47,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2025-03-08 16:21:47,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2025-03-08 16:21:47,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2025-03-08 16:21:47,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2025-03-08 16:21:47,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2025-03-08 16:21:47,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2025-03-08 16:21:47,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2025-03-08 16:21:47,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2025-03-08 16:21:47,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2025-03-08 16:21:47,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2025-03-08 16:21:47,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2025-03-08 16:21:47,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2025-03-08 16:21:47,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2025-03-08 16:21:47,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-08 16:21:47,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-08 16:21:47,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-08 16:21:47,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-08 16:21:47,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-08 16:21:47,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-08 16:21:47,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-03-08 16:21:47,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2025-03-08 16:21:47,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2025-03-08 16:21:47,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2025-03-08 16:21:47,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2025-03-08 16:21:47,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2025-03-08 16:21:47,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2025-03-08 16:21:47,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2025-03-08 16:21:47,156 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 16:21:47,156 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 16:21:47,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 16:21:47,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 16:21:47,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-08 16:21:47,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-08 16:21:47,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-08 16:21:47,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-08 16:21:47,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-08 16:21:47,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 16:21:47,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 16:21:47,285 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 16:21:47,287 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 16:21:47,758 INFO L1307 $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; [2025-03-08 16:21:47,820 INFO L? ?]: Removed 236 outVars from TransFormulas that were not future-live. [2025-03-08 16:21:47,820 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 16:21:47,828 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 16:21:47,828 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 16:21:47,828 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 04:21:47 BoogieIcfgContainer [2025-03-08 16:21:47,829 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 16:21:47,830 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 16:21:47,830 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 16:21:47,833 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 16:21:47,834 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 04:21:46" (1/3) ... [2025-03-08 16:21:47,834 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@417826bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 04:21:47, skipping insertion in model container [2025-03-08 16:21:47,834 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:21:46" (2/3) ... [2025-03-08 16:21:47,834 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@417826bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 04:21:47, skipping insertion in model container [2025-03-08 16:21:47,834 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 04:21:47" (3/3) ... [2025-03-08 16:21:47,835 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-80.i [2025-03-08 16:21:47,845 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 16:21:47,846 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-a_file-80.i that has 2 procedures, 153 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 16:21:47,896 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 16:21:47,904 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;@411b3510, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 16:21:47,905 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 16:21:47,908 INFO L276 IsEmpty]: Start isEmpty. Operand has 153 states, 133 states have (on average 1.4511278195488722) internal successors, (193), 134 states have internal predecessors, (193), 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) [2025-03-08 16:21:47,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-03-08 16:21:47,916 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:21:47,916 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] [2025-03-08 16:21:47,917 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:21:47,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:21:47,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1007250188, now seen corresponding path program 1 times [2025-03-08 16:21:47,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:21:47,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436688620] [2025-03-08 16:21:47,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:21:47,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:21:48,024 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-08 16:21:48,053 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-08 16:21:48,054 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:21:48,055 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:21:48,217 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2025-03-08 16:21:48,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:21:48,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436688620] [2025-03-08 16:21:48,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436688620] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 16:21:48,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055631487] [2025-03-08 16:21:48,219 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:21:48,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 16:21:48,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 16:21:48,221 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) [2025-03-08 16:21:48,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 16:21:48,373 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-08 16:21:48,456 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-08 16:21:48,457 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:21:48,457 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:21:48,464 INFO L256 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 16:21:48,471 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 16:21:48,489 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2025-03-08 16:21:48,490 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 16:21:48,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055631487] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:21:48,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 16:21:48,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-08 16:21:48,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463406721] [2025-03-08 16:21:48,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:21:48,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 16:21:48,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:21:48,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 16:21:48,514 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 16:21:48,517 INFO L87 Difference]: Start difference. First operand has 153 states, 133 states have (on average 1.4511278195488722) internal successors, (193), 134 states have internal predecessors, (193), 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 36.5) internal successors, (73), 2 states have internal predecessors, (73), 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) [2025-03-08 16:21:48,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:21:48,564 INFO L93 Difference]: Finished difference Result 300 states and 466 transitions. [2025-03-08 16:21:48,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 16:21:48,565 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 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 153 [2025-03-08 16:21:48,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:21:48,572 INFO L225 Difference]: With dead ends: 300 [2025-03-08 16:21:48,574 INFO L226 Difference]: Without dead ends: 150 [2025-03-08 16:21:48,577 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 16:21:48,580 INFO L435 NwaCegarLoop]: 222 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, 222 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 [2025-03-08 16:21:48,582 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 16:21:48,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2025-03-08 16:21:48,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2025-03-08 16:21:48,613 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) [2025-03-08 16:21:48,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 222 transitions. [2025-03-08 16:21:48,617 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 222 transitions. Word has length 153 [2025-03-08 16:21:48,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:21:48,617 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 222 transitions. [2025-03-08 16:21:48,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 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) [2025-03-08 16:21:48,617 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 222 transitions. [2025-03-08 16:21:48,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-03-08 16:21:48,619 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:21:48,620 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] [2025-03-08 16:21:48,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-08 16:21:48,820 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 [2025-03-08 16:21:48,821 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:21:48,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:21:48,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1855186665, now seen corresponding path program 1 times [2025-03-08 16:21:48,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:21:48,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635167678] [2025-03-08 16:21:48,821 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:21:48,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:21:48,851 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-08 16:21:48,903 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-08 16:21:48,904 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:21:48,904 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:21:49,251 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2025-03-08 16:21:49,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:21:49,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635167678] [2025-03-08 16:21:49,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635167678] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 16:21:49,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681672889] [2025-03-08 16:21:49,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:21:49,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 16:21:49,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 16:21:49,256 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) [2025-03-08 16:21:49,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 16:21:49,406 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-08 16:21:49,472 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-08 16:21:49,473 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:21:49,473 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:21:49,477 INFO L256 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 16:21:49,484 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 16:21:49,520 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-08 16:21:49,522 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 16:21:49,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681672889] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:21:49,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 16:21:49,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-03-08 16:21:49,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189810823] [2025-03-08 16:21:49,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:21:49,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 16:21:49,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:21:49,525 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 16:21:49,525 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-08 16:21:49,525 INFO L87 Difference]: Start difference. First operand 150 states and 222 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 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) [2025-03-08 16:21:49,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:21:49,571 INFO L93 Difference]: Finished difference Result 300 states and 445 transitions. [2025-03-08 16:21:49,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 16:21:49,571 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 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 [2025-03-08 16:21:49,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:21:49,574 INFO L225 Difference]: With dead ends: 300 [2025-03-08 16:21:49,576 INFO L226 Difference]: Without dead ends: 153 [2025-03-08 16:21:49,577 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-08 16:21:49,577 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 1 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 646 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 [2025-03-08 16:21:49,577 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 646 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 16:21:49,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2025-03-08 16:21:49,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 152. [2025-03-08 16:21:49,585 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) [2025-03-08 16:21:49,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 224 transitions. [2025-03-08 16:21:49,586 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 224 transitions. Word has length 153 [2025-03-08 16:21:49,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:21:49,588 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 224 transitions. [2025-03-08 16:21:49,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 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) [2025-03-08 16:21:49,589 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 224 transitions. [2025-03-08 16:21:49,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-03-08 16:21:49,590 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:21:49,591 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] [2025-03-08 16:21:49,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-08 16:21:49,791 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 [2025-03-08 16:21:49,791 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:21:49,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:21:49,792 INFO L85 PathProgramCache]: Analyzing trace with hash 47732202, now seen corresponding path program 1 times [2025-03-08 16:21:49,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:21:49,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989131189] [2025-03-08 16:21:49,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:21:49,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:21:49,817 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-08 16:21:49,854 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-08 16:21:49,855 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:21:49,855 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:21:50,056 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2025-03-08 16:21:50,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:21:50,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989131189] [2025-03-08 16:21:50,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989131189] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 16:21:50,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530979723] [2025-03-08 16:21:50,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:21:50,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 16:21:50,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 16:21:50,059 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) [2025-03-08 16:21:50,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 16:21:50,203 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-08 16:21:50,263 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-08 16:21:50,263 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:21:50,263 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:21:50,266 INFO L256 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 16:21:50,269 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 16:21:50,300 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-08 16:21:50,300 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 16:21:50,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530979723] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:21:50,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 16:21:50,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-03-08 16:21:50,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812282309] [2025-03-08 16:21:50,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:21:50,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 16:21:50,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:21:50,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 16:21:50,303 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-08 16:21:50,303 INFO L87 Difference]: Start difference. First operand 152 states and 224 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 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) [2025-03-08 16:21:50,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:21:50,332 INFO L93 Difference]: Finished difference Result 304 states and 449 transitions. [2025-03-08 16:21:50,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 16:21:50,332 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 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 [2025-03-08 16:21:50,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:21:50,334 INFO L225 Difference]: With dead ends: 304 [2025-03-08 16:21:50,334 INFO L226 Difference]: Without dead ends: 155 [2025-03-08 16:21:50,334 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-08 16:21:50,335 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 1 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 647 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 [2025-03-08 16:21:50,335 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 647 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 16:21:50,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2025-03-08 16:21:50,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 154. [2025-03-08 16:21:50,344 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) [2025-03-08 16:21:50,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 226 transitions. [2025-03-08 16:21:50,346 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 226 transitions. Word has length 153 [2025-03-08 16:21:50,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:21:50,346 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 226 transitions. [2025-03-08 16:21:50,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 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) [2025-03-08 16:21:50,347 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 226 transitions. [2025-03-08 16:21:50,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-03-08 16:21:50,350 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:21:50,350 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] [2025-03-08 16:21:50,357 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-08 16:21:50,550 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 [2025-03-08 16:21:50,551 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:21:50,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:21:50,551 INFO L85 PathProgramCache]: Analyzing trace with hash 935235883, now seen corresponding path program 1 times [2025-03-08 16:21:50,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:21:50,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019166522] [2025-03-08 16:21:50,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:21:50,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:21:50,576 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-08 16:21:50,598 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-08 16:21:50,598 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:21:50,598 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:21:50,762 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2025-03-08 16:21:50,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:21:50,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019166522] [2025-03-08 16:21:50,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019166522] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 16:21:50,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723416965] [2025-03-08 16:21:50,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:21:50,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 16:21:50,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 16:21:50,767 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) [2025-03-08 16:21:50,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 16:21:50,901 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-08 16:21:50,954 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-08 16:21:50,954 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:21:50,954 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:21:50,957 INFO L256 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 16:21:50,959 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 16:21:50,986 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-08 16:21:50,986 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 16:21:50,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723416965] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:21:50,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 16:21:50,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-03-08 16:21:50,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99977155] [2025-03-08 16:21:50,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:21:50,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 16:21:50,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:21:50,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 16:21:50,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-08 16:21:50,988 INFO L87 Difference]: Start difference. First operand 154 states and 226 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 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) [2025-03-08 16:21:51,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:21:51,009 INFO L93 Difference]: Finished difference Result 308 states and 453 transitions. [2025-03-08 16:21:51,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 16:21:51,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 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 [2025-03-08 16:21:51,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:21:51,010 INFO L225 Difference]: With dead ends: 308 [2025-03-08 16:21:51,011 INFO L226 Difference]: Without dead ends: 157 [2025-03-08 16:21:51,011 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-08 16:21:51,011 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 1 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 649 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 [2025-03-08 16:21:51,012 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 649 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 16:21:51,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2025-03-08 16:21:51,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2025-03-08 16:21:51,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 137 states have (on average 1.416058394160584) internal successors, (194), 137 states have internal predecessors, (194), 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) [2025-03-08 16:21:51,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 228 transitions. [2025-03-08 16:21:51,021 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 228 transitions. Word has length 153 [2025-03-08 16:21:51,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:21:51,021 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 228 transitions. [2025-03-08 16:21:51,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 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) [2025-03-08 16:21:51,022 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 228 transitions. [2025-03-08 16:21:51,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-03-08 16:21:51,023 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:21:51,023 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] [2025-03-08 16:21:51,030 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-08 16:21:51,223 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 [2025-03-08 16:21:51,224 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:21:51,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:21:51,224 INFO L85 PathProgramCache]: Analyzing trace with hash 936159404, now seen corresponding path program 1 times [2025-03-08 16:21:51,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:21:51,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325099715] [2025-03-08 16:21:51,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:21:51,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:21:51,244 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-08 16:21:51,261 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-08 16:21:51,262 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:21:51,262 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:21:51,391 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2025-03-08 16:21:51,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:21:51,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325099715] [2025-03-08 16:21:51,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325099715] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 16:21:51,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137027290] [2025-03-08 16:21:51,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:21:51,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 16:21:51,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 16:21:51,394 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) [2025-03-08 16:21:51,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-08 16:21:51,538 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-08 16:21:51,590 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-08 16:21:51,591 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:21:51,591 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:21:51,593 INFO L256 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 16:21:51,595 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 16:21:51,620 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-08 16:21:51,620 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 16:21:51,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137027290] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:21:51,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 16:21:51,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2025-03-08 16:21:51,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87864904] [2025-03-08 16:21:51,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:21:51,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 16:21:51,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:21:51,622 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 16:21:51,622 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-08 16:21:51,622 INFO L87 Difference]: Start difference. First operand 156 states and 228 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 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) [2025-03-08 16:21:51,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:21:51,642 INFO L93 Difference]: Finished difference Result 311 states and 456 transitions. [2025-03-08 16:21:51,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 16:21:51,643 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 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 [2025-03-08 16:21:51,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:21:51,645 INFO L225 Difference]: With dead ends: 311 [2025-03-08 16:21:51,645 INFO L226 Difference]: Without dead ends: 158 [2025-03-08 16:21:51,646 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-08 16:21:51,646 INFO L435 NwaCegarLoop]: 220 mSDtfsCounter, 0 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 649 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 [2025-03-08 16:21:51,648 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 649 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 16:21:51,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2025-03-08 16:21:51,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2025-03-08 16:21:51,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 139 states have (on average 1.410071942446043) internal successors, (196), 139 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) [2025-03-08 16:21:51,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 230 transitions. [2025-03-08 16:21:51,659 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 230 transitions. Word has length 153 [2025-03-08 16:21:51,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:21:51,659 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 230 transitions. [2025-03-08 16:21:51,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 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) [2025-03-08 16:21:51,660 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 230 transitions. [2025-03-08 16:21:51,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2025-03-08 16:21:51,661 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:21:51,661 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, 1, 1] [2025-03-08 16:21:51,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-08 16:21:51,865 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 [2025-03-08 16:21:51,865 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:21:51,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:21:51,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1714356246, now seen corresponding path program 1 times [2025-03-08 16:21:51,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:21:51,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194331394] [2025-03-08 16:21:51,866 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:21:51,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:21:51,885 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-03-08 16:21:52,015 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-03-08 16:21:52,015 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:21:52,015 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:21:52,324 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-08 16:21:52,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:21:52,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194331394] [2025-03-08 16:21:52,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194331394] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:21:52,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:21:52,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 16:21:52,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477738326] [2025-03-08 16:21:52,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:21:52,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 16:21:52,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:21:52,325 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 16:21:52,325 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 16:21:52,325 INFO L87 Difference]: Start difference. First operand 158 states and 230 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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) [2025-03-08 16:21:52,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:21:52,390 INFO L93 Difference]: Finished difference Result 317 states and 464 transitions. [2025-03-08 16:21:52,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 16:21:52,391 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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 155 [2025-03-08 16:21:52,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:21:52,392 INFO L225 Difference]: With dead ends: 317 [2025-03-08 16:21:52,392 INFO L226 Difference]: Without dead ends: 162 [2025-03-08 16:21:52,392 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 [2025-03-08 16:21:52,393 INFO L435 NwaCegarLoop]: 216 mSDtfsCounter, 2 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 834 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 [2025-03-08 16:21:52,393 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 834 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 16:21:52,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2025-03-08 16:21:52,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 161. [2025-03-08 16:21:52,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 142 states have (on average 1.408450704225352) internal successors, (200), 142 states have internal predecessors, (200), 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) [2025-03-08 16:21:52,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 234 transitions. [2025-03-08 16:21:52,398 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 234 transitions. Word has length 155 [2025-03-08 16:21:52,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:21:52,399 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 234 transitions. [2025-03-08 16:21:52,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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) [2025-03-08 16:21:52,399 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 234 transitions. [2025-03-08 16:21:52,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2025-03-08 16:21:52,400 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:21:52,400 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, 1, 1, 1, 1] [2025-03-08 16:21:52,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 16:21:52,403 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:21:52,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:21:52,403 INFO L85 PathProgramCache]: Analyzing trace with hash -469591765, now seen corresponding path program 1 times [2025-03-08 16:21:52,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:21:52,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946307046] [2025-03-08 16:21:52,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:21:52,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:21:52,436 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-03-08 16:21:52,532 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-03-08 16:21:52,533 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:21:52,533 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:21:54,242 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-08 16:21:54,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:21:54,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946307046] [2025-03-08 16:21:54,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946307046] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:21:54,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:21:54,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 16:21:54,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24743064] [2025-03-08 16:21:54,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:21:54,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 16:21:54,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:21:54,243 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 16:21:54,243 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-08 16:21:54,244 INFO L87 Difference]: Start difference. First operand 161 states and 234 transitions. Second operand has 8 states, 6 states have (on average 12.166666666666666) internal successors, (73), 8 states have internal predecessors, (73), 3 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 3 states have call successors, (17) [2025-03-08 16:21:54,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:21:54,717 INFO L93 Difference]: Finished difference Result 433 states and 630 transitions. [2025-03-08 16:21:54,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 16:21:54,718 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 12.166666666666666) internal successors, (73), 8 states have internal predecessors, (73), 3 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 3 states have call successors, (17) Word has length 155 [2025-03-08 16:21:54,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:21:54,719 INFO L225 Difference]: With dead ends: 433 [2025-03-08 16:21:54,719 INFO L226 Difference]: Without dead ends: 275 [2025-03-08 16:21:54,720 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-03-08 16:21:54,720 INFO L435 NwaCegarLoop]: 200 mSDtfsCounter, 152 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 16:21:54,721 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 1251 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 16:21:54,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2025-03-08 16:21:54,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 272. [2025-03-08 16:21:54,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 242 states have (on average 1.4132231404958677) internal successors, (342), 243 states have internal predecessors, (342), 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) [2025-03-08 16:21:54,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 396 transitions. [2025-03-08 16:21:54,738 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 396 transitions. Word has length 155 [2025-03-08 16:21:54,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:21:54,739 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 396 transitions. [2025-03-08 16:21:54,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 12.166666666666666) internal successors, (73), 8 states have internal predecessors, (73), 3 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 3 states have call successors, (17) [2025-03-08 16:21:54,739 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 396 transitions. [2025-03-08 16:21:54,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2025-03-08 16:21:54,741 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:21:54,741 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, 1, 1] [2025-03-08 16:21:54,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 16:21:54,741 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:21:54,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:21:54,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1466664118, now seen corresponding path program 1 times [2025-03-08 16:21:54,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:21:54,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603043563] [2025-03-08 16:21:54,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:21:54,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:21:54,763 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-03-08 16:21:54,825 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-03-08 16:21:54,826 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:21:54,826 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat