./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-industry-pattern/aiob_1.c --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/loop-industry-pattern/aiob_1.c -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 f089d1b40a76f9af7e090d21489c70b68a6ceb7402496399cd1357670ffd9b51 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 17:52:28,527 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 17:52:28,574 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 17:52:28,578 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 17:52:28,578 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 17:52:28,591 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 17:52:28,591 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 17:52:28,592 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 17:52:28,592 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 17:52:28,592 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 17:52:28,592 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 17:52:28,592 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 17:52:28,592 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 17:52:28,592 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 17:52:28,592 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 17:52:28,593 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 17:52:28,593 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 17:52:28,593 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 17:52:28,593 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 17:52:28,593 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 17:52:28,593 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 17:52:28,593 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 17:52:28,593 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 17:52:28,593 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 17:52:28,593 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 17:52:28,593 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 17:52:28,594 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 17:52:28,594 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 17:52:28,594 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 17:52:28,594 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 17:52:28,594 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 17:52:28,594 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 17:52:28,594 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 17:52:28,594 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 17:52:28,594 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 17:52:28,594 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 17:52:28,594 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 17:52:28,594 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 17:52:28,594 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 17:52:28,595 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 17:52:28,595 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 17:52:28,595 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 17:52:28,595 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 17:52:28,595 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 -> f089d1b40a76f9af7e090d21489c70b68a6ceb7402496399cd1357670ffd9b51 [2025-03-16 17:52:28,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 17:52:28,791 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 17:52:28,793 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 17:52:28,794 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 17:52:28,795 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 17:52:28,796 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-industry-pattern/aiob_1.c [2025-03-16 17:52:29,982 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96ea843cb/45880bfe9952414ba942cde7850c0f91/FLAGbf35e468c [2025-03-16 17:52:30,192 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 17:52:30,193 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-industry-pattern/aiob_1.c [2025-03-16 17:52:30,201 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96ea843cb/45880bfe9952414ba942cde7850c0f91/FLAGbf35e468c [2025-03-16 17:52:30,217 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96ea843cb/45880bfe9952414ba942cde7850c0f91 [2025-03-16 17:52:30,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 17:52:30,221 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 17:52:30,222 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 17:52:30,223 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 17:52:30,226 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 17:52:30,226 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 05:52:30" (1/1) ... [2025-03-16 17:52:30,227 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e979e6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:52:30, skipping insertion in model container [2025-03-16 17:52:30,228 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 05:52:30" (1/1) ... [2025-03-16 17:52:30,244 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 17:52:30,425 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/loop-industry-pattern/aiob_1.c[7657,7670] [2025-03-16 17:52:30,428 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 17:52:30,434 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 17:52:30,476 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/loop-industry-pattern/aiob_1.c[7657,7670] [2025-03-16 17:52:30,476 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 17:52:30,491 INFO L204 MainTranslator]: Completed translation [2025-03-16 17:52:30,492 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:52:30 WrapperNode [2025-03-16 17:52:30,492 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 17:52:30,493 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 17:52:30,493 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 17:52:30,493 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 17:52:30,497 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:52:30" (1/1) ... [2025-03-16 17:52:30,508 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:52:30" (1/1) ... [2025-03-16 17:52:30,533 INFO L138 Inliner]: procedures = 21, calls = 242, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 352 [2025-03-16 17:52:30,533 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 17:52:30,534 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 17:52:30,534 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 17:52:30,534 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 17:52:30,541 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:52:30" (1/1) ... [2025-03-16 17:52:30,541 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:52:30" (1/1) ... [2025-03-16 17:52:30,549 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:52:30" (1/1) ... [2025-03-16 17:52:30,580 INFO L175 MemorySlicer]: Split 226 memory accesses to 6 slices as follows [2, 7, 2, 41, 131, 43]. 58 percent of accesses are in the largest equivalence class. The 11 initializations are split as follows [2, 7, 2, 0, 0, 0]. The 169 writes are split as follows [0, 0, 0, 0, 127, 42]. [2025-03-16 17:52:30,580 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:52:30" (1/1) ... [2025-03-16 17:52:30,581 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:52:30" (1/1) ... [2025-03-16 17:52:30,593 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:52:30" (1/1) ... [2025-03-16 17:52:30,594 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:52:30" (1/1) ... [2025-03-16 17:52:30,595 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:52:30" (1/1) ... [2025-03-16 17:52:30,599 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:52:30" (1/1) ... [2025-03-16 17:52:30,603 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 17:52:30,603 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 17:52:30,603 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 17:52:30,604 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 17:52:30,604 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:52:30" (1/1) ... [2025-03-16 17:52:30,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 17:52:30,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 17:52:30,629 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) [2025-03-16 17:52:30,633 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 [2025-03-16 17:52:30,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-16 17:52:30,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-16 17:52:30,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-16 17:52:30,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-16 17:52:30,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-03-16 17:52:30,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-03-16 17:52:30,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 17:52:30,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 17:52:30,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-16 17:52:30,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-16 17:52:30,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-16 17:52:30,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-16 17:52:30,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-16 17:52:30,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-03-16 17:52:30,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-03-16 17:52:30,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-03-16 17:52:30,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2025-03-16 17:52:30,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2025-03-16 17:52:30,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2025-03-16 17:52:30,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-16 17:52:30,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2025-03-16 17:52:30,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2025-03-16 17:52:30,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2025-03-16 17:52:30,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2025-03-16 17:52:30,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2025-03-16 17:52:30,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2025-03-16 17:52:30,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 17:52:30,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 17:52:30,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-16 17:52:30,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-16 17:52:30,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-16 17:52:30,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-16 17:52:30,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-16 17:52:30,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-16 17:52:30,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-16 17:52:30,776 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 17:52:30,778 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 17:52:35,887 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2025-03-16 17:52:35,887 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 17:52:35,895 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 17:52:35,895 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 17:52:35,896 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 05:52:35 BoogieIcfgContainer [2025-03-16 17:52:35,896 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 17:52:35,897 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 17:52:35,897 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 17:52:35,901 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 17:52:35,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 05:52:30" (1/3) ... [2025-03-16 17:52:35,902 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c95f3f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 05:52:35, skipping insertion in model container [2025-03-16 17:52:35,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:52:30" (2/3) ... [2025-03-16 17:52:35,902 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c95f3f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 05:52:35, skipping insertion in model container [2025-03-16 17:52:35,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 05:52:35" (3/3) ... [2025-03-16 17:52:35,903 INFO L128 eAbstractionObserver]: Analyzing ICFG aiob_1.c [2025-03-16 17:52:35,915 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 17:52:35,916 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aiob_1.c that has 1 procedures, 12 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-16 17:52:35,956 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 17:52:35,965 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;@4da36b7c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 17:52:35,966 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 17:52:35,970 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:52:35,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-03-16 17:52:35,974 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 17:52:35,974 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-16 17:52:35,975 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 17:52:35,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 17:52:35,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1418865726, now seen corresponding path program 1 times [2025-03-16 17:52:35,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 17:52:35,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10462377] [2025-03-16 17:52:35,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 17:52:35,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 17:52:40,777 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-16 17:52:41,021 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-16 17:52:41,022 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 17:52:41,023 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:52:41,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:52:41,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 17:52:41,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10462377] [2025-03-16 17:52:41,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10462377] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 17:52:41,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 17:52:41,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 17:52:41,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179173312] [2025-03-16 17:52:41,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 17:52:41,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 17:52:41,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 17:52:41,944 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 17:52:41,945 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 17:52:41,946 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:52:42,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 17:52:42,109 INFO L93 Difference]: Finished difference Result 27 states and 35 transitions. [2025-03-16 17:52:42,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 17:52:42,110 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-03-16 17:52:42,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 17:52:42,114 INFO L225 Difference]: With dead ends: 27 [2025-03-16 17:52:42,114 INFO L226 Difference]: Without dead ends: 12 [2025-03-16 17:52:42,116 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 17:52:42,118 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 3 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 17:52:42,118 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 25 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 17:52:42,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2025-03-16 17:52:42,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2025-03-16 17:52:42,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:52:42,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2025-03-16 17:52:42,136 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 6 [2025-03-16 17:52:42,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 17:52:42,136 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2025-03-16 17:52:42,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:52:42,136 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2025-03-16 17:52:42,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-16 17:52:42,138 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 17:52:42,138 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2025-03-16 17:52:42,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 17:52:42,139 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 17:52:42,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 17:52:42,139 INFO L85 PathProgramCache]: Analyzing trace with hash 748924185, now seen corresponding path program 1 times [2025-03-16 17:52:42,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 17:52:42,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377665569] [2025-03-16 17:52:42,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 17:52:42,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 17:52:46,603 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-16 17:52:46,670 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-16 17:52:46,671 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 17:52:46,671 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:52:47,384 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:52:47,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 17:52:47,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377665569] [2025-03-16 17:52:47,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377665569] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 17:52:47,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228563766] [2025-03-16 17:52:47,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 17:52:47,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 17:52:47,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 17:52:47,388 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) [2025-03-16 17:52:47,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-16 17:52:51,966 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-16 17:52:52,180 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-16 17:52:52,180 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 17:52:52,180 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:52:52,188 INFO L256 TraceCheckSpWp]: Trace formula consists of 1724 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-16 17:52:52,191 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 17:52:52,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:52:52,375 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 17:52:52,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:52:52,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228563766] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 17:52:52,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 17:52:52,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2025-03-16 17:52:52,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304968193] [2025-03-16 17:52:52,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 17:52:52,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-16 17:52:52,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 17:52:52,765 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-16 17:52:52,765 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-16 17:52:52,765 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:52:56,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-16 17:52:57,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 17:52:57,934 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2025-03-16 17:52:57,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-16 17:52:57,935 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-03-16 17:52:57,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 17:52:57,936 INFO L225 Difference]: With dead ends: 26 [2025-03-16 17:52:57,936 INFO L226 Difference]: Without dead ends: 24 [2025-03-16 17:52:57,936 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2025-03-16 17:52:57,937 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2025-03-16 17:52:57,937 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 17 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2025-03-16 17:52:57,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2025-03-16 17:52:57,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2025-03-16 17:52:57,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:52:57,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2025-03-16 17:52:57,939 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 10 [2025-03-16 17:52:57,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 17:52:57,939 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2025-03-16 17:52:57,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:52:57,940 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2025-03-16 17:52:57,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-03-16 17:52:57,940 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 17:52:57,940 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1] [2025-03-16 17:52:57,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-16 17:52:58,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 17:52:58,141 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 17:52:58,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 17:52:58,141 INFO L85 PathProgramCache]: Analyzing trace with hash -989344086, now seen corresponding path program 2 times [2025-03-16 17:52:58,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 17:52:58,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778001721] [2025-03-16 17:52:58,142 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 17:52:58,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 17:53:02,548 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-03-16 17:53:02,731 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 6 of 22 statements. [2025-03-16 17:53:02,732 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-16 17:53:02,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:53:45,564 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 ((as const (Array Int Int)) 0))) (= (let ((.cse109 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 216))) (store (let ((.cse108 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 432))) (store (let ((.cse107 (+ 140 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse106 (+ 408 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse105 (+ 476 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse104 (+ 464 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse103 (+ 440 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse102 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 224))) (store (let ((.cse101 (+ 340 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse100 (+ 76 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse99 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 396))) (store (let ((.cse98 (+ 160 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse97 (+ 88 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse96 (+ 412 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse95 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 364))) (store (let ((.cse94 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 488))) (store (let ((.cse93 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 328))) (store (let ((.cse92 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 208))) (store (let ((.cse91 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 248))) (store (let ((.cse90 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 24))) (store (let ((.cse89 (+ 176 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse88 (+ 400 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse87 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 336))) (store (let ((.cse86 (+ 204 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse85 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 332))) (store (let ((.cse84 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 20))) (store (let ((.cse83 (+ 152 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse82 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 360))) (store (let ((.cse81 (+ 68 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse80 (+ 84 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse79 (+ 192 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse78 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 240))) (store (let ((.cse77 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 48))) (store (let ((.cse76 (+ 212 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse75 (+ 468 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse74 (+ 368 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse73 (+ 44 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse72 (+ 112 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse71 (+ 416 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse70 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 132))) (store (let ((.cse69 (+ 228 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse68 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 420))) (store (let ((.cse67 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 268))) (store (let ((.cse66 (+ 108 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse65 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 376))) (store (let ((.cse64 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 188))) (store (let ((.cse63 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 80))) (store (let ((.cse62 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 456))) (store (let ((.cse61 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 96))) (store (let ((.cse60 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 292))) (store (let ((.cse59 (+ 452 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse58 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 8))) (store (let ((.cse57 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 288))) (store (let ((.cse56 (+ 392 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse55 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 300))) (store (let ((.cse54 (+ 144 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse53 (+ 256 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse52 (+ 156 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse51 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 272))) (store (let ((.cse50 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 312))) (store (let ((.cse49 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 404))) (store (let ((.cse48 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 220))) (store (let ((.cse47 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 60))) (store (let ((.cse46 (+ 296 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse45 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 480))) (store (let ((.cse44 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 304))) (store (let ((.cse43 (+ 92 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse42 (+ 344 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse41 (+ 372 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse40 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 36))) (store (let ((.cse39 (+ 380 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse38 (+ 252 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse37 (+ 356 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse36 (+ 148 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse35 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 308))) (store (let ((.cse34 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 444))) (store (let ((.cse33 (+ 200 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse32 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 128))) (store (let ((.cse31 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 264))) (store (let ((.cse30 (+ 104 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse29 (+ 316 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse28 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 320))) (store (let ((.cse27 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 136))) (store (let ((.cse26 (+ 196 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse25 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 12))) (store (let ((.cse24 (+ 232 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse23 (+ 56 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse22 (+ 260 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse21 (+ 116 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse20 (+ 72 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse19 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 324))) (store (let ((.cse18 (+ 32 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse17 (+ 184 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse16 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 120))) (store (let ((.cse15 (+ 280 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse14 (+ 352 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse13 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 168))) (store (let ((.cse12 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 180))) (store (let ((.cse11 (+ 164 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse10 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 100))) (store (let ((.cse9 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 172))) (store (let ((.cse8 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 348))) (store (let ((.cse7 (+ 276 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse6 (+ 236 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse5 (+ 428 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse4 (+ 388 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse3 (+ |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 384))) (store (let ((.cse2 (+ 244 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (let ((.cse0 (+ 284 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset|))) (store (select |c_#memory_int#4| |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.base|) .cse0 (select .cse1 .cse0))) .cse2 (select .cse1 .cse2))) .cse3 (select .cse1 .cse3))) .cse4 (select .cse1 .cse4))) .cse5 (select .cse1 .cse5))) .cse6 (select .cse1 .cse6))) .cse7 (select .cse1 .cse7))) .cse8 (select .cse1 .cse8))) .cse9 (select .cse1 .cse9))) .cse10 (select .cse1 .cse10))) .cse11 (select .cse1 .cse11))) .cse12 (select .cse1 .cse12))) .cse13 (select .cse1 .cse13))) .cse14 (select .cse1 .cse14))) .cse15 (select .cse1 .cse15))) .cse16 (select .cse1 .cse16))) .cse17 (select .cse1 .cse17))) .cse18 (select .cse1 .cse18))) .cse19 (select .cse1 .cse19))) .cse20 (select .cse1 .cse20))) .cse21 (select .cse1 .cse21))) .cse22 (select .cse1 .cse22))) .cse23 (select .cse1 .cse23))) .cse24 (select .cse1 .cse24))) .cse25 (select .cse1 .cse25))) .cse26 (select .cse1 .cse26))) .cse27 (select .cse1 .cse27))) .cse28 (select .cse1 .cse28))) .cse29 (select .cse1 .cse29))) .cse30 (select .cse1 .cse30))) .cse31 (select .cse1 .cse31))) .cse32 (select .cse1 .cse32))) .cse33 (select .cse1 .cse33))) .cse34 (select .cse1 .cse34))) .cse35 (select .cse1 .cse35))) .cse36 (select .cse1 .cse36))) .cse37 (select .cse1 .cse37))) .cse38 (select .cse1 .cse38))) .cse39 (select .cse1 .cse39))) .cse40 (select .cse1 .cse40))) .cse41 (select .cse1 .cse41))) .cse42 (select .cse1 .cse42))) .cse43 (select .cse1 .cse43))) .cse44 (select .cse1 .cse44))) .cse45 (select .cse1 .cse45))) .cse46 (select .cse1 .cse46))) .cse47 (select .cse1 .cse47))) .cse48 (select .cse1 .cse48))) .cse49 (select .cse1 .cse49))) .cse50 (select .cse1 .cse50))) .cse51 (select .cse1 .cse51))) .cse52 (select .cse1 .cse52))) .cse53 (select .cse1 .cse53))) .cse54 (select .cse1 .cse54))) .cse55 (select .cse1 .cse55))) .cse56 (select .cse1 .cse56))) .cse57 (select .cse1 .cse57))) .cse58 (select .cse1 .cse58))) .cse59 (select .cse1 .cse59))) .cse60 (select .cse1 .cse60))) .cse61 (select .cse1 .cse61))) .cse62 (select .cse1 .cse62))) .cse63 (select .cse1 .cse63))) .cse64 (select .cse1 .cse64))) .cse65 (select .cse1 .cse65))) .cse66 (select .cse1 .cse66))) .cse67 (select .cse1 .cse67))) .cse68 (select .cse1 .cse68))) .cse69 (select .cse1 .cse69))) .cse70 (select .cse1 .cse70))) .cse71 (select .cse1 .cse71))) .cse72 (select .cse1 .cse72))) .cse73 (select .cse1 .cse73))) .cse74 (select .cse1 .cse74))) .cse75 (select .cse1 .cse75))) .cse76 (select .cse1 .cse76))) .cse77 (select .cse1 .cse77))) .cse78 (select .cse1 .cse78))) .cse79 (select .cse1 .cse79))) .cse80 (select .cse1 .cse80))) .cse81 (select .cse1 .cse81))) .cse82 (select .cse1 .cse82))) .cse83 (select .cse1 .cse83))) .cse84 (select .cse1 .cse84))) .cse85 (select .cse1 .cse85))) .cse86 (select .cse1 .cse86))) .cse87 (select .cse1 .cse87))) .cse88 (select .cse1 .cse88))) .cse89 (select .cse1 .cse89))) .cse90 (select .cse1 .cse90))) .cse91 (select .cse1 .cse91))) .cse92 (select .cse1 .cse92))) .cse93 (select .cse1 .cse93))) .cse94 (select .cse1 .cse94))) .cse95 (select .cse1 .cse95))) .cse96 (select .cse1 .cse96))) .cse97 (select .cse1 .cse97))) .cse98 (select .cse1 .cse98))) .cse99 (select .cse1 .cse99))) .cse100 (select .cse1 .cse100))) .cse101 (select .cse1 .cse101))) .cse102 (select .cse1 .cse102))) .cse103 (select .cse1 .cse103))) .cse104 (select .cse1 .cse104))) .cse105 (select .cse1 .cse105))) .cse106 (select .cse1 .cse106))) .cse107 (select .cse1 .cse107))) .cse108 (select .cse1 .cse108))) .cse109 (select .cse1 .cse109))) (store .cse1 |c_ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 24642))) is different from false [2025-03-16 17:53:49,184 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 8 not checked. [2025-03-16 17:53:49,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 17:53:49,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778001721] [2025-03-16 17:53:49,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778001721] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 17:53:49,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326280507] [2025-03-16 17:53:49,185 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 17:53:49,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 17:53:49,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 17:53:49,187 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) [2025-03-16 17:53:49,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-16 17:53:54,015 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes.