./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-80.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_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 f77e8c9f93ca54d94eb905f2ce3291ad784a62b1b2b1f919a3731c7174a0c943 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 05:50:54,688 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 05:50:54,741 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 05:50:54,747 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 05:50:54,747 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 05:50:54,761 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 05:50:54,762 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 05:50:54,762 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 05:50:54,763 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 05:50:54,763 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 05:50:54,764 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 05:50:54,764 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 05:50:54,764 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 05:50:54,765 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 05:50:54,765 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 05:50:54,765 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 05:50:54,765 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 05:50:54,765 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 05:50:54,765 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 05:50:54,765 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 05:50:54,765 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 05:50:54,765 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 05:50:54,765 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 05:50:54,765 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 05:50:54,766 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 05:50:54,766 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 05:50:54,766 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 05:50:54,766 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 05:50:54,766 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 05:50:54,766 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 05:50:54,766 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 05:50:54,766 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 05:50:54,767 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 05:50:54,767 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 05:50:54,767 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 05:50:54,767 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 05:50:54,767 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 05:50:54,767 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 05:50:54,767 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 05:50:54,767 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 05:50:54,767 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 05:50:54,767 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 05:50:54,767 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 05:50:54,768 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 -> f77e8c9f93ca54d94eb905f2ce3291ad784a62b1b2b1f919a3731c7174a0c943 [2025-03-17 05:50:54,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 05:50:54,993 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 05:50:54,994 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 05:50:54,996 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 05:50:54,996 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 05:50:54,997 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-80.i [2025-03-17 05:50:56,108 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be0809022/dbb5c5e181f04ea99fdd7b1723ab88a1/FLAGb18cd3761 [2025-03-17 05:50:56,316 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 05:50:56,318 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-80.i [2025-03-17 05:50:56,324 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be0809022/dbb5c5e181f04ea99fdd7b1723ab88a1/FLAGb18cd3761 [2025-03-17 05:50:56,657 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be0809022/dbb5c5e181f04ea99fdd7b1723ab88a1 [2025-03-17 05:50:56,659 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 05:50:56,660 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 05:50:56,661 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 05:50:56,661 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 05:50:56,663 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 05:50:56,664 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 05:50:56" (1/1) ... [2025-03-17 05:50:56,664 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@237cd493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:50:56, skipping insertion in model container [2025-03-17 05:50:56,664 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 05:50:56" (1/1) ... [2025-03-17 05:50:56,683 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 05:50:56,785 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-p_file-80.i[916,929] [2025-03-17 05:50:56,841 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 05:50:56,856 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 05:50:56,865 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-p_file-80.i[916,929] [2025-03-17 05:50:56,908 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 05:50:56,926 INFO L204 MainTranslator]: Completed translation [2025-03-17 05:50:56,927 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:50:56 WrapperNode [2025-03-17 05:50:56,928 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 05:50:56,929 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 05:50:56,929 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 05:50:56,929 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 05:50:56,933 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:50:56" (1/1) ... [2025-03-17 05:50:56,948 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:50:56" (1/1) ... [2025-03-17 05:50:56,983 INFO L138 Inliner]: procedures = 29, calls = 244, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 808 [2025-03-17 05:50:56,984 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 05:50:56,984 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 05:50:56,987 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 05:50:56,987 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 05:50:56,993 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:50:56" (1/1) ... [2025-03-17 05:50:56,993 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:50:56" (1/1) ... [2025-03-17 05:50:56,997 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:50:56" (1/1) ... [2025-03-17 05:50:57,016 INFO L175 MemorySlicer]: Split 199 memory accesses to 18 slices as follows [2, 3, 11, 8, 12, 13, 6, 14, 5, 22, 22, 14, 16, 8, 8, 3, 23, 9]. 12 percent of accesses are in the largest equivalence class. The 19 initializations are split as follows [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]. The 19 writes are split as follows [0, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1]. [2025-03-17 05:50:57,017 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:50:56" (1/1) ... [2025-03-17 05:50:57,017 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:50:56" (1/1) ... [2025-03-17 05:50:57,039 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:50:56" (1/1) ... [2025-03-17 05:50:57,041 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:50:56" (1/1) ... [2025-03-17 05:50:57,047 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:50:56" (1/1) ... [2025-03-17 05:50:57,048 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:50:56" (1/1) ... [2025-03-17 05:50:57,060 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 05:50:57,061 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 05:50:57,062 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 05:50:57,062 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 05:50:57,062 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:50:56" (1/1) ... [2025-03-17 05:50:57,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 05:50:57,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 05:50:57,091 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 05:50:57,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 05:50:57,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 05:50:57,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 05:50:57,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 05:50:57,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-17 05:50:57,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-17 05:50:57,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-17 05:50:57,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-17 05:50:57,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-03-17 05:50:57,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2025-03-17 05:50:57,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2025-03-17 05:50:57,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2025-03-17 05:50:57,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2025-03-17 05:50:57,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2025-03-17 05:50:57,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2025-03-17 05:50:57,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2025-03-17 05:50:57,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2025-03-17 05:50:57,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2025-03-17 05:50:57,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#16 [2025-03-17 05:50:57,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#17 [2025-03-17 05:50:57,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2025-03-17 05:50:57,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2025-03-17 05:50:57,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2025-03-17 05:50:57,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2025-03-17 05:50:57,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2025-03-17 05:50:57,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2025-03-17 05:50:57,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2025-03-17 05:50:57,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2025-03-17 05:50:57,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2025-03-17 05:50:57,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2025-03-17 05:50:57,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2025-03-17 05:50:57,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2025-03-17 05:50:57,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#12 [2025-03-17 05:50:57,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#13 [2025-03-17 05:50:57,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#14 [2025-03-17 05:50:57,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#15 [2025-03-17 05:50:57,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#16 [2025-03-17 05:50:57,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#17 [2025-03-17 05:50:57,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2025-03-17 05:50:57,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2025-03-17 05:50:57,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2025-03-17 05:50:57,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2025-03-17 05:50:57,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2025-03-17 05:50:57,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2025-03-17 05:50:57,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2025-03-17 05:50:57,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2025-03-17 05:50:57,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2025-03-17 05:50:57,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#9 [2025-03-17 05:50:57,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#10 [2025-03-17 05:50:57,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#11 [2025-03-17 05:50:57,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#12 [2025-03-17 05:50:57,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#13 [2025-03-17 05:50:57,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#14 [2025-03-17 05:50:57,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#15 [2025-03-17 05:50:57,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#16 [2025-03-17 05:50:57,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#17 [2025-03-17 05:50:57,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 05:50:57,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 05:50:57,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-17 05:50:57,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-17 05:50:57,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-17 05:50:57,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-17 05:50:57,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-03-17 05:50:57,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2025-03-17 05:50:57,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2025-03-17 05:50:57,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2025-03-17 05:50:57,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2025-03-17 05:50:57,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2025-03-17 05:50:57,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2025-03-17 05:50:57,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2025-03-17 05:50:57,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2025-03-17 05:50:57,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2025-03-17 05:50:57,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#16 [2025-03-17 05:50:57,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#17 [2025-03-17 05:50:57,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2025-03-17 05:50:57,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2025-03-17 05:50:57,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2025-03-17 05:50:57,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2025-03-17 05:50:57,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2025-03-17 05:50:57,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2025-03-17 05:50:57,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2025-03-17 05:50:57,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2025-03-17 05:50:57,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2025-03-17 05:50:57,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#9 [2025-03-17 05:50:57,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#10 [2025-03-17 05:50:57,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#11 [2025-03-17 05:50:57,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#12 [2025-03-17 05:50:57,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#13 [2025-03-17 05:50:57,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#14 [2025-03-17 05:50:57,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#15 [2025-03-17 05:50:57,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#16 [2025-03-17 05:50:57,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#17 [2025-03-17 05:50:57,116 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 05:50:57,116 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 05:50:57,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 05:50:57,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 05:50:57,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-17 05:50:57,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-17 05:50:57,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-17 05:50:57,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-17 05:50:57,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-17 05:50:57,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-17 05:50:57,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-17 05:50:57,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-03-17 05:50:57,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-03-17 05:50:57,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-03-17 05:50:57,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-03-17 05:50:57,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-03-17 05:50:57,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-03-17 05:50:57,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-03-17 05:50:57,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-03-17 05:50:57,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-03-17 05:50:57,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 05:50:57,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 05:50:57,274 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 05:50:57,276 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 05:50:57,674 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L111: havoc property_#t~mem140#1;havoc property_#t~mem141#1;havoc property_#t~mem142#1;havoc property_#t~ite146#1;havoc property_#t~mem143#1;havoc property_#t~mem144#1;havoc property_#t~mem145#1;havoc property_#t~mem147#1;havoc property_#t~mem148#1;havoc property_#t~mem149#1;havoc property_#t~mem150#1;havoc property_#t~ite155#1;havoc property_#t~mem151#1;havoc property_#t~mem152#1;havoc property_#t~mem153#1;havoc property_#t~mem154#1;havoc property_#t~ite164#1;havoc property_#t~mem163#1;havoc property_#t~mem156#1;havoc property_#t~mem157#1;havoc property_#t~mem158#1;havoc property_#t~ite162#1;havoc property_#t~mem159#1;havoc property_#t~mem160#1;havoc property_#t~mem161#1;havoc property_#t~mem167#1;havoc property_#t~mem165#1;havoc property_#t~mem166#1;havoc property_#t~short168#1;havoc property_#t~ite176#1;havoc property_#t~mem173#1;havoc property_#t~mem169#1;havoc property_#t~ite172#1;havoc property_#t~mem170#1;havoc property_#t~mem171#1;havoc property_#t~mem175#1;havoc property_#t~mem174#1;havoc property_#t~short177#1;havoc property_#t~mem180#1;havoc property_#t~mem178#1;havoc property_#t~mem179#1;havoc property_#t~ite218#1;havoc property_#t~mem214#1;havoc property_#t~mem181#1;havoc property_#t~mem182#1;havoc property_#t~ite185#1;havoc property_#t~mem183#1;havoc property_#t~mem184#1;havoc property_#t~mem186#1;havoc property_#t~ite193#1;havoc property_#t~mem187#1;havoc property_#t~mem188#1;havoc property_#t~ite191#1;havoc property_#t~mem189#1;havoc property_#t~mem190#1;havoc property_#t~mem192#1;havoc property_#t~mem194#1;havoc property_#t~ite196#1;havoc property_#t~mem195#1;havoc property_#t~ite213#1;havoc property_#t~mem197#1;havoc property_#t~mem198#1;havoc property_#t~ite201#1;havoc property_#t~mem199#1;havoc property_#t~mem200#1;havoc property_#t~mem202#1;havoc property_#t~ite209#1;havoc property_#t~mem203#1;havoc property_#t~mem204#1;havoc property_#t~ite207#1;havoc property_#t~mem205#1;havoc property_#t~mem206#1;havoc property_#t~mem208#1;havoc property_#t~mem210#1;havoc property_#t~ite212#1;havoc property_#t~mem211#1;havoc property_#t~mem217#1;havoc property_#t~mem215#1;havoc property_#t~mem216#1;havoc property_#t~short219#1;havoc property_#t~mem221#1;havoc property_#t~mem220#1;havoc property_#t~short222#1;havoc property_#t~mem224#1;havoc property_#t~mem223#1;havoc property_#t~short225#1;havoc property_#t~mem227#1;havoc property_#t~mem226#1;havoc property_#t~short228#1; [2025-03-17 05:50:57,734 INFO L? ?]: Removed 234 outVars from TransFormulas that were not future-live. [2025-03-17 05:50:57,734 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 05:50:57,742 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 05:50:57,744 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 05:50:57,745 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 05:50:57 BoogieIcfgContainer [2025-03-17 05:50:57,745 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 05:50:57,747 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 05:50:57,747 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 05:50:57,750 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 05:50:57,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 05:50:56" (1/3) ... [2025-03-17 05:50:57,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@755ba2f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 05:50:57, skipping insertion in model container [2025-03-17 05:50:57,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:50:56" (2/3) ... [2025-03-17 05:50:57,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@755ba2f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 05:50:57, skipping insertion in model container [2025-03-17 05:50:57,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 05:50:57" (3/3) ... [2025-03-17 05:50:57,752 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-80.i [2025-03-17 05:50:57,762 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 05:50:57,764 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-p_file-80.i that has 2 procedures, 148 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-17 05:50:57,813 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 05:50:57,822 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;@5efe8cab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 05:50:57,823 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 05:50:57,826 INFO L276 IsEmpty]: Start isEmpty. Operand has 148 states, 128 states have (on average 1.46875) internal successors, (188), 129 states have internal predecessors, (188), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-17 05:50:57,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-03-17 05:50:57,835 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:50:57,836 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:50:57,836 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:50:57,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:50:57,839 INFO L85 PathProgramCache]: Analyzing trace with hash 677650739, now seen corresponding path program 1 times [2025-03-17 05:50:57,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:50:57,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123814281] [2025-03-17 05:50:57,844 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:50:57,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:50:57,928 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-17 05:50:57,955 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-17 05:50:57,955 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:50:57,955 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:50:58,108 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2025-03-17 05:50:58,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:50:58,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123814281] [2025-03-17 05:50:58,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123814281] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 05:50:58,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781073136] [2025-03-17 05:50:58,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:50:58,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:50:58,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 05:50:58,112 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 05:50:58,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 05:50:58,326 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-17 05:50:58,423 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-17 05:50:58,423 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:50:58,423 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:50:58,426 INFO L256 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 05:50:58,433 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 05:50:58,447 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2025-03-17 05:50:58,448 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 05:50:58,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781073136] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:50:58,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 05:50:58,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-17 05:50:58,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884989649] [2025-03-17 05:50:58,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:50:58,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 05:50:58,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:50:58,467 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 05:50:58,467 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 05:50:58,469 INFO L87 Difference]: Start difference. First operand has 148 states, 128 states have (on average 1.46875) internal successors, (188), 129 states have internal predecessors, (188), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-17 05:50:58,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:50:58,494 INFO L93 Difference]: Finished difference Result 293 states and 459 transitions. [2025-03-17 05:50:58,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 05:50:58,495 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 149 [2025-03-17 05:50:58,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:50:58,500 INFO L225 Difference]: With dead ends: 293 [2025-03-17 05:50:58,500 INFO L226 Difference]: Without dead ends: 146 [2025-03-17 05:50:58,502 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 05:50:58,504 INFO L435 NwaCegarLoop]: 218 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 05:50:58,504 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 05:50:58,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2025-03-17 05:50:58,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2025-03-17 05:50:58,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 127 states have (on average 1.4488188976377954) internal successors, (184), 127 states have internal predecessors, (184), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-17 05:50:58,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 218 transitions. [2025-03-17 05:50:58,541 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 218 transitions. Word has length 149 [2025-03-17 05:50:58,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:50:58,542 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 218 transitions. [2025-03-17 05:50:58,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-17 05:50:58,542 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 218 transitions. [2025-03-17 05:50:58,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-03-17 05:50:58,544 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:50:58,544 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:50:58,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 05:50:58,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-17 05:50:58,745 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:50:58,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:50:58,746 INFO L85 PathProgramCache]: Analyzing trace with hash -635071522, now seen corresponding path program 1 times [2025-03-17 05:50:58,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:50:58,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434775031] [2025-03-17 05:50:58,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:50:58,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:50:58,772 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-17 05:50:58,810 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-17 05:50:58,812 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:50:58,812 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:50:59,109 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 21 proven. 27 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2025-03-17 05:50:59,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:50:59,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434775031] [2025-03-17 05:50:59,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434775031] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 05:50:59,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142827293] [2025-03-17 05:50:59,111 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:50:59,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:50:59,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 05:50:59,113 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 05:50:59,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 05:50:59,296 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-17 05:50:59,370 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-17 05:50:59,370 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:50:59,370 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:50:59,374 INFO L256 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 05:50:59,382 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 05:50:59,416 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-17 05:50:59,416 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 05:50:59,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142827293] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:50:59,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 05:50:59,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-03-17 05:50:59,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500230661] [2025-03-17 05:50:59,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:50:59,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 05:50:59,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:50:59,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 05:50:59,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-17 05:50:59,419 INFO L87 Difference]: Start difference. First operand 146 states and 218 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 05:50:59,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:50:59,465 INFO L93 Difference]: Finished difference Result 294 states and 439 transitions. [2025-03-17 05:50:59,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 05:50:59,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 149 [2025-03-17 05:50:59,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:50:59,469 INFO L225 Difference]: With dead ends: 294 [2025-03-17 05:50:59,469 INFO L226 Difference]: Without dead ends: 149 [2025-03-17 05:50:59,469 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-17 05:50:59,470 INFO L435 NwaCegarLoop]: 215 mSDtfsCounter, 1 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 05:50:59,470 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 634 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 05:50:59,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2025-03-17 05:50:59,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 148. [2025-03-17 05:50:59,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 129 states have (on average 1.441860465116279) internal successors, (186), 129 states have internal predecessors, (186), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-17 05:50:59,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 220 transitions. [2025-03-17 05:50:59,481 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 220 transitions. Word has length 149 [2025-03-17 05:50:59,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:50:59,484 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 220 transitions. [2025-03-17 05:50:59,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 05:50:59,484 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 220 transitions. [2025-03-17 05:50:59,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-03-17 05:50:59,485 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:50:59,486 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:50:59,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 05:50:59,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2025-03-17 05:50:59,686 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:50:59,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:50:59,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1852441311, now seen corresponding path program 1 times [2025-03-17 05:50:59,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:50:59,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5652766] [2025-03-17 05:50:59,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:50:59,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:50:59,712 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-17 05:50:59,736 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-17 05:50:59,736 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:50:59,736 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:50:59,932 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 21 proven. 27 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2025-03-17 05:50:59,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:50:59,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5652766] [2025-03-17 05:50:59,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5652766] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 05:50:59,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593604972] [2025-03-17 05:50:59,933 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:50:59,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:50:59,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 05:50:59,937 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 05:50:59,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 05:51:00,121 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-17 05:51:00,206 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-17 05:51:00,207 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:51:00,207 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:51:00,210 INFO L256 TraceCheckSpWp]: Trace formula consists of 722 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 05:51:00,218 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 05:51:00,248 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-17 05:51:00,249 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 05:51:00,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593604972] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:51:00,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 05:51:00,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-03-17 05:51:00,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802253318] [2025-03-17 05:51:00,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:51:00,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 05:51:00,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:51:00,250 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 05:51:00,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-17 05:51:00,251 INFO L87 Difference]: Start difference. First operand 148 states and 220 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 05:51:00,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:51:00,282 INFO L93 Difference]: Finished difference Result 298 states and 443 transitions. [2025-03-17 05:51:00,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 05:51:00,285 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 149 [2025-03-17 05:51:00,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:51:00,286 INFO L225 Difference]: With dead ends: 298 [2025-03-17 05:51:00,286 INFO L226 Difference]: Without dead ends: 151 [2025-03-17 05:51:00,287 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-17 05:51:00,288 INFO L435 NwaCegarLoop]: 215 mSDtfsCounter, 1 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 05:51:00,288 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 635 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 05:51:00,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2025-03-17 05:51:00,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 150. [2025-03-17 05:51:00,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 131 states have (on average 1.4351145038167938) internal successors, (188), 131 states have internal predecessors, (188), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-17 05:51:00,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 222 transitions. [2025-03-17 05:51:00,300 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 222 transitions. Word has length 149 [2025-03-17 05:51:00,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:51:00,300 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 222 transitions. [2025-03-17 05:51:00,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 05:51:00,301 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 222 transitions. [2025-03-17 05:51:00,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-03-17 05:51:00,302 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:51:00,302 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:51:00,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-17 05:51:00,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:51:00,503 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:51:00,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:51:00,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1555022304, now seen corresponding path program 1 times [2025-03-17 05:51:00,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:51:00,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800989406] [2025-03-17 05:51:00,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:51:00,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:51:00,529 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-17 05:51:00,546 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-17 05:51:00,546 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:51:00,546 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:51:00,728 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 21 proven. 27 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2025-03-17 05:51:00,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:51:00,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800989406] [2025-03-17 05:51:00,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800989406] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 05:51:00,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490874852] [2025-03-17 05:51:00,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:51:00,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:51:00,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 05:51:00,731 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 05:51:00,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 05:51:00,911 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-17 05:51:00,978 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-17 05:51:00,979 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:51:00,979 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:51:00,983 INFO L256 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 05:51:00,986 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 05:51:01,012 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-17 05:51:01,012 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 05:51:01,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490874852] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:51:01,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 05:51:01,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-03-17 05:51:01,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415376144] [2025-03-17 05:51:01,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:51:01,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 05:51:01,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:51:01,014 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 05:51:01,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-17 05:51:01,014 INFO L87 Difference]: Start difference. First operand 150 states and 222 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 05:51:01,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:51:01,036 INFO L93 Difference]: Finished difference Result 302 states and 447 transitions. [2025-03-17 05:51:01,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 05:51:01,037 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 149 [2025-03-17 05:51:01,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:51:01,039 INFO L225 Difference]: With dead ends: 302 [2025-03-17 05:51:01,040 INFO L226 Difference]: Without dead ends: 153 [2025-03-17 05:51:01,041 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-17 05:51:01,042 INFO L435 NwaCegarLoop]: 215 mSDtfsCounter, 1 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 05:51:01,044 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 637 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 05:51:01,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2025-03-17 05:51:01,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 152. [2025-03-17 05:51:01,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 133 states have (on average 1.4285714285714286) internal successors, (190), 133 states have internal predecessors, (190), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-17 05:51:01,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 224 transitions. [2025-03-17 05:51:01,058 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 224 transitions. Word has length 149 [2025-03-17 05:51:01,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:51:01,058 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 224 transitions. [2025-03-17 05:51:01,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 05:51:01,059 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 224 transitions. [2025-03-17 05:51:01,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-03-17 05:51:01,062 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:51:01,062 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:51:01,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-17 05:51:01,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:51:01,263 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:51:01,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:51:01,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1554098783, now seen corresponding path program 1 times [2025-03-17 05:51:01,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:51:01,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400150140] [2025-03-17 05:51:01,264 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:51:01,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:51:01,289 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-17 05:51:01,310 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-17 05:51:01,310 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:51:01,310 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:51:01,447 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 21 proven. 27 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2025-03-17 05:51:01,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:51:01,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400150140] [2025-03-17 05:51:01,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400150140] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 05:51:01,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415822309] [2025-03-17 05:51:01,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:51:01,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:51:01,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 05:51:01,450 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 05:51:01,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 05:51:01,632 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-17 05:51:01,698 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-17 05:51:01,698 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:51:01,698 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:51:01,701 INFO L256 TraceCheckSpWp]: Trace formula consists of 712 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 05:51:01,704 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 05:51:01,724 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-17 05:51:01,725 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 05:51:01,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415822309] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:51:01,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 05:51:01,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2025-03-17 05:51:01,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324766830] [2025-03-17 05:51:01,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:51:01,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 05:51:01,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:51:01,726 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 05:51:01,727 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-17 05:51:01,727 INFO L87 Difference]: Start difference. First operand 152 states and 224 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 05:51:01,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:51:01,748 INFO L93 Difference]: Finished difference Result 305 states and 450 transitions. [2025-03-17 05:51:01,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 05:51:01,750 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 149 [2025-03-17 05:51:01,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:51:01,751 INFO L225 Difference]: With dead ends: 305 [2025-03-17 05:51:01,751 INFO L226 Difference]: Without dead ends: 154 [2025-03-17 05:51:01,751 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-17 05:51:01,752 INFO L435 NwaCegarLoop]: 216 mSDtfsCounter, 0 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 05:51:01,752 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 637 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 05:51:01,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2025-03-17 05:51:01,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2025-03-17 05:51:01,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 135 states have (on average 1.4222222222222223) internal successors, (192), 135 states have internal predecessors, (192), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-17 05:51:01,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 226 transitions. [2025-03-17 05:51:01,765 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 226 transitions. Word has length 149 [2025-03-17 05:51:01,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:51:01,765 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 226 transitions. [2025-03-17 05:51:01,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 05:51:01,765 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 226 transitions. [2025-03-17 05:51:01,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-17 05:51:01,766 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:51:01,766 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:51:01,774 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-17 05:51:01,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:51:01,967 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:51:01,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:51:01,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1739277119, now seen corresponding path program 1 times [2025-03-17 05:51:01,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:51:01,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544520917] [2025-03-17 05:51:01,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:51:01,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:51:01,990 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-17 05:51:02,079 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-17 05:51:02,079 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:51:02,079 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:51:02,341 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-17 05:51:02,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:51:02,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544520917] [2025-03-17 05:51:02,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544520917] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:51:02,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:51:02,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 05:51:02,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901500607] [2025-03-17 05:51:02,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:51:02,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 05:51:02,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:51:02,343 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 05:51:02,343 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 05:51:02,343 INFO L87 Difference]: Start difference. First operand 154 states and 226 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 05:51:02,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:51:02,397 INFO L93 Difference]: Finished difference Result 311 states and 458 transitions. [2025-03-17 05:51:02,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 05:51:02,397 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 151 [2025-03-17 05:51:02,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:51:02,398 INFO L225 Difference]: With dead ends: 311 [2025-03-17 05:51:02,398 INFO L226 Difference]: Without dead ends: 158 [2025-03-17 05:51:02,399 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 05:51:02,399 INFO L435 NwaCegarLoop]: 214 mSDtfsCounter, 2 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 05:51:02,400 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 624 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 05:51:02,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2025-03-17 05:51:02,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 157. [2025-03-17 05:51:02,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 138 states have (on average 1.4202898550724639) internal successors, (196), 138 states have internal predecessors, (196), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-17 05:51:02,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 230 transitions. [2025-03-17 05:51:02,412 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 230 transitions. Word has length 151 [2025-03-17 05:51:02,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:51:02,412 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 230 transitions. [2025-03-17 05:51:02,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-17 05:51:02,412 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 230 transitions. [2025-03-17 05:51:02,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-17 05:51:02,413 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:51:02,413 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:51:02,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 05:51:02,413 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:51:02,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:51:02,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1310925696, now seen corresponding path program 1 times [2025-03-17 05:51:02,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:51:02,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779554104] [2025-03-17 05:51:02,414 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:51:02,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:51:02,436 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-17 05:51:02,531 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-17 05:51:02,532 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:51:02,532 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat