./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.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/uthash-2.0.2/uthash_BER_test7-1.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 3d4f4fa5c64db6e2d1986e03259021eba4df8a22df3a334e78927feece513264 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 10:21:05,325 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 10:21:05,382 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 10:21:05,386 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 10:21:05,387 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 10:21:05,403 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 10:21:05,404 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 10:21:05,404 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 10:21:05,405 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 10:21:05,405 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 10:21:05,406 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 10:21:05,406 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 10:21:05,406 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 10:21:05,407 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 10:21:05,407 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 10:21:05,407 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 10:21:05,407 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 10:21:05,407 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 10:21:05,408 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 10:21:05,408 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 10:21:05,408 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 10:21:05,408 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 10:21:05,408 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 10:21:05,408 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 10:21:05,408 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 10:21:05,408 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 10:21:05,408 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 10:21:05,408 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 10:21:05,409 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 10:21:05,409 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 10:21:05,409 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 10:21:05,409 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 10:21:05,409 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 10:21:05,409 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 10:21:05,409 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 10:21:05,409 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 10:21:05,409 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 10:21:05,409 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 10:21:05,409 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 10:21:05,409 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 10:21:05,409 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 10:21:05,409 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 10:21:05,409 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 10:21:05,409 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 -> 3d4f4fa5c64db6e2d1986e03259021eba4df8a22df3a334e78927feece513264 [2025-03-17 10:21:05,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 10:21:05,670 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 10:21:05,673 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 10:21:05,674 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 10:21:05,674 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 10:21:05,675 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i [2025-03-17 10:21:06,895 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21ea05838/66e01ecc378c491bb1639b780fbb1a6a/FLAG06ec05d36 [2025-03-17 10:21:07,174 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 10:21:07,174 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i [2025-03-17 10:21:07,194 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21ea05838/66e01ecc378c491bb1639b780fbb1a6a/FLAG06ec05d36 [2025-03-17 10:21:07,208 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21ea05838/66e01ecc378c491bb1639b780fbb1a6a [2025-03-17 10:21:07,211 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 10:21:07,213 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 10:21:07,214 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 10:21:07,214 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 10:21:07,218 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 10:21:07,219 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 10:21:07" (1/1) ... [2025-03-17 10:21:07,221 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b328b29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:21:07, skipping insertion in model container [2025-03-17 10:21:07,221 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 10:21:07" (1/1) ... [2025-03-17 10:21:07,262 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 10:21:07,538 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/uthash-2.0.2/uthash_BER_test7-1.i[33021,33034] [2025-03-17 10:21:07,614 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/uthash-2.0.2/uthash_BER_test7-1.i[44124,44137] [2025-03-17 10:21:07,615 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/uthash-2.0.2/uthash_BER_test7-1.i[44245,44258] [2025-03-17 10:21:07,620 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 10:21:07,628 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 10:21:07,650 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/uthash-2.0.2/uthash_BER_test7-1.i[33021,33034] [2025-03-17 10:21:07,703 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/uthash-2.0.2/uthash_BER_test7-1.i[44124,44137] [2025-03-17 10:21:07,703 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/uthash-2.0.2/uthash_BER_test7-1.i[44245,44258] [2025-03-17 10:21:07,707 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 10:21:07,738 INFO L204 MainTranslator]: Completed translation [2025-03-17 10:21:07,739 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:21:07 WrapperNode [2025-03-17 10:21:07,739 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 10:21:07,740 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 10:21:07,740 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 10:21:07,740 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 10:21:07,745 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:21:07" (1/1) ... [2025-03-17 10:21:07,772 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:21:07" (1/1) ... [2025-03-17 10:21:07,825 INFO L138 Inliner]: procedures = 176, calls = 269, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1378 [2025-03-17 10:21:07,826 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 10:21:07,826 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 10:21:07,827 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 10:21:07,827 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 10:21:07,833 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:21:07" (1/1) ... [2025-03-17 10:21:07,833 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:21:07" (1/1) ... [2025-03-17 10:21:07,851 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:21:07" (1/1) ... [2025-03-17 10:21:07,915 INFO L175 MemorySlicer]: Split 253 memory accesses to 3 slices as follows [2, 217, 34]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 54 writes are split as follows [0, 50, 4]. [2025-03-17 10:21:07,919 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:21:07" (1/1) ... [2025-03-17 10:21:07,919 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:21:07" (1/1) ... [2025-03-17 10:21:07,963 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:21:07" (1/1) ... [2025-03-17 10:21:07,965 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:21:07" (1/1) ... [2025-03-17 10:21:07,970 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:21:07" (1/1) ... [2025-03-17 10:21:07,980 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:21:07" (1/1) ... [2025-03-17 10:21:07,989 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 10:21:07,991 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 10:21:07,991 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 10:21:07,991 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 10:21:07,992 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:21:07" (1/1) ... [2025-03-17 10:21:07,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 10:21:08,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 10:21:08,019 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 10:21:08,022 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 10:21:08,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 10:21:08,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 10:21:08,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-17 10:21:08,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 10:21:08,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 10:21:08,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-17 10:21:08,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-17 10:21:08,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-17 10:21:08,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-03-17 10:21:08,047 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-17 10:21:08,047 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-17 10:21:08,047 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-03-17 10:21:08,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 10:21:08,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 10:21:08,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-17 10:21:08,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-17 10:21:08,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-17 10:21:08,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 10:21:08,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-17 10:21:08,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-17 10:21:08,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-17 10:21:08,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 10:21:08,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 10:21:08,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 10:21:08,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-17 10:21:08,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 10:21:08,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 10:21:08,244 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 10:21:08,246 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 10:21:09,464 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L713: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2025-03-17 10:21:09,542 INFO L? ?]: Removed 311 outVars from TransFormulas that were not future-live. [2025-03-17 10:21:09,542 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 10:21:09,585 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 10:21:09,585 INFO L336 CfgBuilder]: Removed 1 assume(true) statements. [2025-03-17 10:21:09,586 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 10:21:09 BoogieIcfgContainer [2025-03-17 10:21:09,586 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 10:21:09,588 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 10:21:09,588 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 10:21:09,592 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 10:21:09,592 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 10:21:07" (1/3) ... [2025-03-17 10:21:09,592 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77b5c57e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 10:21:09, skipping insertion in model container [2025-03-17 10:21:09,593 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:21:07" (2/3) ... [2025-03-17 10:21:09,593 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77b5c57e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 10:21:09, skipping insertion in model container [2025-03-17 10:21:09,593 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 10:21:09" (3/3) ... [2025-03-17 10:21:09,594 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_BER_test7-1.i [2025-03-17 10:21:09,606 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 10:21:09,608 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_BER_test7-1.i that has 4 procedures, 396 locations, 1 initial locations, 36 loop locations, and 2 error locations. [2025-03-17 10:21:09,664 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 10:21:09,673 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;@3a054f30, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 10:21:09,673 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-17 10:21:09,680 INFO L276 IsEmpty]: Start isEmpty. Operand has 388 states, 381 states have (on average 1.6246719160104988) internal successors, (619), 383 states have internal predecessors, (619), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 10:21:09,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-17 10:21:09,690 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:21:09,691 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:21:09,691 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:21:09,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:21:09,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1426167181, now seen corresponding path program 1 times [2025-03-17 10:21:09,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:21:09,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363946749] [2025-03-17 10:21:09,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:21:09,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:21:09,821 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 10:21:09,828 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 10:21:09,828 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:21:09,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:21:09,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:21:09,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:21:09,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363946749] [2025-03-17 10:21:09,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363946749] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:21:09,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:21:09,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 10:21:09,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674341189] [2025-03-17 10:21:09,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:21:09,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 10:21:09,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:21:09,887 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 10:21:09,888 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 10:21:09,891 INFO L87 Difference]: Start difference. First operand has 388 states, 381 states have (on average 1.6246719160104988) internal successors, (619), 383 states have internal predecessors, (619), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2025-03-17 10:21:10,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:21:10,030 INFO L93 Difference]: Finished difference Result 775 states and 1249 transitions. [2025-03-17 10:21:10,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 10:21:10,033 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2025-03-17 10:21:10,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:21:10,042 INFO L225 Difference]: With dead ends: 775 [2025-03-17 10:21:10,042 INFO L226 Difference]: Without dead ends: 385 [2025-03-17 10:21:10,045 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 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 10:21:10,049 INFO L435 NwaCegarLoop]: 519 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 10:21:10,050 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 519 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 10:21:10,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2025-03-17 10:21:10,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2025-03-17 10:21:10,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 379 states have (on average 1.4564643799472297) internal successors, (552), 380 states have internal predecessors, (552), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 10:21:10,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 558 transitions. [2025-03-17 10:21:10,108 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 558 transitions. Word has length 7 [2025-03-17 10:21:10,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:21:10,109 INFO L471 AbstractCegarLoop]: Abstraction has 385 states and 558 transitions. [2025-03-17 10:21:10,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2025-03-17 10:21:10,109 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 558 transitions. [2025-03-17 10:21:10,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-17 10:21:10,110 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:21:10,110 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:21:10,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 10:21:10,110 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:21:10,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:21:10,111 INFO L85 PathProgramCache]: Analyzing trace with hash 731280288, now seen corresponding path program 1 times [2025-03-17 10:21:10,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:21:10,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212406666] [2025-03-17 10:21:10,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:21:10,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:21:10,125 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 10:21:10,140 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 10:21:10,141 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:21:10,141 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:21:10,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:21:10,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:21:10,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212406666] [2025-03-17 10:21:10,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212406666] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:21:10,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:21:10,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 10:21:10,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225775603] [2025-03-17 10:21:10,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:21:10,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 10:21:10,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:21:10,288 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 10:21:10,288 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 10:21:10,288 INFO L87 Difference]: Start difference. First operand 385 states and 558 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2025-03-17 10:21:10,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:21:10,540 INFO L93 Difference]: Finished difference Result 952 states and 1383 transitions. [2025-03-17 10:21:10,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 10:21:10,541 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2025-03-17 10:21:10,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:21:10,544 INFO L225 Difference]: With dead ends: 952 [2025-03-17 10:21:10,544 INFO L226 Difference]: Without dead ends: 764 [2025-03-17 10:21:10,546 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 10:21:10,547 INFO L435 NwaCegarLoop]: 497 mSDtfsCounter, 543 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 1485 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 10:21:10,547 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 1485 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 10:21:10,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2025-03-17 10:21:10,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 387. [2025-03-17 10:21:10,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 381 states have (on average 1.4540682414698163) internal successors, (554), 382 states have internal predecessors, (554), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 10:21:10,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 560 transitions. [2025-03-17 10:21:10,576 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 560 transitions. Word has length 9 [2025-03-17 10:21:10,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:21:10,576 INFO L471 AbstractCegarLoop]: Abstraction has 387 states and 560 transitions. [2025-03-17 10:21:10,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2025-03-17 10:21:10,579 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 560 transitions. [2025-03-17 10:21:10,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-03-17 10:21:10,580 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:21:10,581 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:21:10,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 10:21:10,581 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:21:10,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:21:10,581 INFO L85 PathProgramCache]: Analyzing trace with hash -512132827, now seen corresponding path program 1 times [2025-03-17 10:21:10,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:21:10,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972963495] [2025-03-17 10:21:10,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:21:10,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:21:10,622 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-17 10:21:10,635 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-17 10:21:10,635 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:21:10,635 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:21:10,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:21:10,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:21:10,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972963495] [2025-03-17 10:21:10,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972963495] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:21:10,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:21:10,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 10:21:10,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773215942] [2025-03-17 10:21:10,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:21:10,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 10:21:10,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:21:10,908 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 10:21:10,908 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 10:21:10,909 INFO L87 Difference]: Start difference. First operand 387 states and 560 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2025-03-17 10:21:11,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:21:11,049 INFO L93 Difference]: Finished difference Result 729 states and 1051 transitions. [2025-03-17 10:21:11,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 10:21:11,050 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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 83 [2025-03-17 10:21:11,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:21:11,051 INFO L225 Difference]: With dead ends: 729 [2025-03-17 10:21:11,051 INFO L226 Difference]: Without dead ends: 345 [2025-03-17 10:21:11,052 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 10:21:11,052 INFO L435 NwaCegarLoop]: 424 mSDtfsCounter, 30 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 10:21:11,052 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1253 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 10:21:11,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2025-03-17 10:21:11,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2025-03-17 10:21:11,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 339 states have (on average 1.407079646017699) internal successors, (477), 340 states have internal predecessors, (477), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 10:21:11,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 483 transitions. [2025-03-17 10:21:11,065 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 483 transitions. Word has length 83 [2025-03-17 10:21:11,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:21:11,065 INFO L471 AbstractCegarLoop]: Abstraction has 345 states and 483 transitions. [2025-03-17 10:21:11,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2025-03-17 10:21:11,065 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 483 transitions. [2025-03-17 10:21:11,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-03-17 10:21:11,069 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:21:11,069 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:21:11,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 10:21:11,069 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:21:11,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:21:11,072 INFO L85 PathProgramCache]: Analyzing trace with hash -842971732, now seen corresponding path program 1 times [2025-03-17 10:21:11,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:21:11,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364876989] [2025-03-17 10:21:11,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:21:11,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:21:11,109 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-17 10:21:11,131 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-17 10:21:11,131 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:21:11,131 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:21:11,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:21:11,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:21:11,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364876989] [2025-03-17 10:21:11,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364876989] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:21:11,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:21:11,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 10:21:11,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801205656] [2025-03-17 10:21:11,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:21:11,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 10:21:11,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:21:11,227 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 10:21:11,227 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 10:21:11,227 INFO L87 Difference]: Start difference. First operand 345 states and 483 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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) [2025-03-17 10:21:11,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:21:11,383 INFO L93 Difference]: Finished difference Result 934 states and 1320 transitions. [2025-03-17 10:21:11,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 10:21:11,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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 83 [2025-03-17 10:21:11,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:21:11,386 INFO L225 Difference]: With dead ends: 934 [2025-03-17 10:21:11,386 INFO L226 Difference]: Without dead ends: 592 [2025-03-17 10:21:11,386 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 10:21:11,387 INFO L435 NwaCegarLoop]: 608 mSDtfsCounter, 293 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 10:21:11,387 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 1026 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 10:21:11,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2025-03-17 10:21:11,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 588. [2025-03-17 10:21:11,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 582 states have (on average 1.4243986254295533) internal successors, (829), 583 states have internal predecessors, (829), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 10:21:11,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 835 transitions. [2025-03-17 10:21:11,401 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 835 transitions. Word has length 83 [2025-03-17 10:21:11,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:21:11,401 INFO L471 AbstractCegarLoop]: Abstraction has 588 states and 835 transitions. [2025-03-17 10:21:11,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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) [2025-03-17 10:21:11,401 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 835 transitions. [2025-03-17 10:21:11,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-03-17 10:21:11,403 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:21:11,403 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:21:11,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 10:21:11,404 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:21:11,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:21:11,404 INFO L85 PathProgramCache]: Analyzing trace with hash -594064213, now seen corresponding path program 1 times [2025-03-17 10:21:11,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:21:11,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040540382] [2025-03-17 10:21:11,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:21:11,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:21:11,454 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-17 10:21:11,494 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-17 10:21:11,494 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:21:11,495 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:21:11,743 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-17 10:21:11,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:21:11,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040540382] [2025-03-17 10:21:11,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040540382] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:21:11,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:21:11,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 10:21:11,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834170335] [2025-03-17 10:21:11,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:21:11,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 10:21:11,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:21:11,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 10:21:11,747 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 10:21:11,747 INFO L87 Difference]: Start difference. First operand 588 states and 835 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:21:11,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:21:11,933 INFO L93 Difference]: Finished difference Result 867 states and 1230 transitions. [2025-03-17 10:21:11,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 10:21:11,934 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 98 [2025-03-17 10:21:11,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:21:11,938 INFO L225 Difference]: With dead ends: 867 [2025-03-17 10:21:11,938 INFO L226 Difference]: Without dead ends: 863 [2025-03-17 10:21:11,939 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 10:21:11,939 INFO L435 NwaCegarLoop]: 462 mSDtfsCounter, 453 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 1341 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 10:21:11,944 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 1341 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 10:21:11,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2025-03-17 10:21:11,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 590. [2025-03-17 10:21:11,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 584 states have (on average 1.422945205479452) internal successors, (831), 585 states have internal predecessors, (831), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 10:21:11,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 837 transitions. [2025-03-17 10:21:11,964 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 837 transitions. Word has length 98 [2025-03-17 10:21:11,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:21:11,965 INFO L471 AbstractCegarLoop]: Abstraction has 590 states and 837 transitions. [2025-03-17 10:21:11,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:21:11,965 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 837 transitions. [2025-03-17 10:21:11,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2025-03-17 10:21:11,967 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:21:11,967 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:21:11,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 10:21:11,967 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:21:11,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:21:11,968 INFO L85 PathProgramCache]: Analyzing trace with hash -371245653, now seen corresponding path program 1 times [2025-03-17 10:21:11,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:21:11,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513779378] [2025-03-17 10:21:11,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:21:11,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:21:12,024 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 150 statements into 1 equivalence classes. [2025-03-17 10:21:12,056 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 150 of 150 statements. [2025-03-17 10:21:12,061 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:21:12,061 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:21:12,299 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-17 10:21:12,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:21:12,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513779378] [2025-03-17 10:21:12,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513779378] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:21:12,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:21:12,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 10:21:12,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938909299] [2025-03-17 10:21:12,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:21:12,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 10:21:12,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:21:12,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 10:21:12,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 10:21:12,300 INFO L87 Difference]: Start difference. First operand 590 states and 837 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:21:12,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:21:12,426 INFO L93 Difference]: Finished difference Result 851 states and 1213 transitions. [2025-03-17 10:21:12,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 10:21:12,426 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 150 [2025-03-17 10:21:12,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:21:12,429 INFO L225 Difference]: With dead ends: 851 [2025-03-17 10:21:12,430 INFO L226 Difference]: Without dead ends: 506 [2025-03-17 10:21:12,430 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 10:21:12,432 INFO L435 NwaCegarLoop]: 350 mSDtfsCounter, 30 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1031 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 10:21:12,432 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1031 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 10:21:12,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2025-03-17 10:21:12,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 506. [2025-03-17 10:21:12,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 500 states have (on average 1.354) internal successors, (677), 501 states have internal predecessors, (677), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 10:21:12,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 683 transitions. [2025-03-17 10:21:12,449 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 683 transitions. Word has length 150 [2025-03-17 10:21:12,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:21:12,450 INFO L471 AbstractCegarLoop]: Abstraction has 506 states and 683 transitions. [2025-03-17 10:21:12,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:21:12,450 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 683 transitions. [2025-03-17 10:21:12,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2025-03-17 10:21:12,451 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:21:12,452 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:21:12,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 10:21:12,452 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:21:12,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:21:12,453 INFO L85 PathProgramCache]: Analyzing trace with hash -957002715, now seen corresponding path program 1 times [2025-03-17 10:21:12,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:21:12,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311193070] [2025-03-17 10:21:12,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:21:12,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:21:12,512 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 150 statements into 1 equivalence classes. [2025-03-17 10:21:12,542 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 150 of 150 statements. [2025-03-17 10:21:12,543 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:21:12,543 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:21:12,715 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 10:21:12,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:21:12,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311193070] [2025-03-17 10:21:12,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311193070] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:21:12,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:21:12,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 10:21:12,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478476973] [2025-03-17 10:21:12,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:21:12,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 10:21:12,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:21:12,718 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 10:21:12,718 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 10:21:12,718 INFO L87 Difference]: Start difference. First operand 506 states and 683 transitions. Second operand has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:21:13,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:21:13,142 INFO L93 Difference]: Finished difference Result 1264 states and 1708 transitions. [2025-03-17 10:21:13,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 10:21:13,143 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 150 [2025-03-17 10:21:13,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:21:13,147 INFO L225 Difference]: With dead ends: 1264 [2025-03-17 10:21:13,147 INFO L226 Difference]: Without dead ends: 846 [2025-03-17 10:21:13,148 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-03-17 10:21:13,149 INFO L435 NwaCegarLoop]: 453 mSDtfsCounter, 1098 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1099 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 10:21:13,149 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1099 Valid, 1270 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 10:21:13,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2025-03-17 10:21:13,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 643. [2025-03-17 10:21:13,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 637 states have (on average 1.3563579277864992) internal successors, (864), 638 states have internal predecessors, (864), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 10:21:13,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 870 transitions. [2025-03-17 10:21:13,169 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 870 transitions. Word has length 150 [2025-03-17 10:21:13,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:21:13,170 INFO L471 AbstractCegarLoop]: Abstraction has 643 states and 870 transitions. [2025-03-17 10:21:13,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:21:13,171 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 870 transitions. [2025-03-17 10:21:13,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2025-03-17 10:21:13,173 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:21:13,173 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:21:13,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 10:21:13,173 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:21:13,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:21:13,174 INFO L85 PathProgramCache]: Analyzing trace with hash 58697879, now seen corresponding path program 1 times [2025-03-17 10:21:13,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:21:13,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705758138] [2025-03-17 10:21:13,174 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:21:13,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:21:13,215 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 160 statements into 1 equivalence classes. [2025-03-17 10:21:13,253 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 160 of 160 statements. [2025-03-17 10:21:13,254 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:21:13,255 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:21:13,886 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 10:21:13,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:21:13,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705758138] [2025-03-17 10:21:13,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705758138] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 10:21:13,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533909312] [2025-03-17 10:21:13,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:21:13,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 10:21:13,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 10:21:13,891 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 10:21:13,893 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 10:21:14,076 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 160 statements into 1 equivalence classes. [2025-03-17 10:21:14,170 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 160 of 160 statements. [2025-03-17 10:21:14,171 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:21:14,171 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:21:14,179 INFO L256 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 10:21:14,189 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 10:21:14,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-17 10:21:14,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-03-17 10:21:14,427 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 10:21:14,428 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 10:21:14,581 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 10:21:14,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533909312] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 10:21:14,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 10:21:14,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2025-03-17 10:21:14,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325002315] [2025-03-17 10:21:14,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 10:21:14,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 10:21:14,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:21:14,583 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 10:21:14,583 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2025-03-17 10:21:14,583 INFO L87 Difference]: Start difference. First operand 643 states and 870 transitions. Second operand has 12 states, 12 states have (on average 26.5) internal successors, (318), 12 states have internal predecessors, (318), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-03-17 10:21:15,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:21:15,160 INFO L93 Difference]: Finished difference Result 2881 states and 3907 transitions. [2025-03-17 10:21:15,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 10:21:15,161 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 26.5) internal successors, (318), 12 states have internal predecessors, (318), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 160 [2025-03-17 10:21:15,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:21:15,169 INFO L225 Difference]: With dead ends: 2881 [2025-03-17 10:21:15,170 INFO L226 Difference]: Without dead ends: 2480 [2025-03-17 10:21:15,174 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 312 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2025-03-17 10:21:15,174 INFO L435 NwaCegarLoop]: 684 mSDtfsCounter, 2218 mSDsluCounter, 4412 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2222 SdHoareTripleChecker+Valid, 5096 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 10:21:15,174 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2222 Valid, 5096 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 10:21:15,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2480 states. [2025-03-17 10:21:15,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2480 to 983. [2025-03-17 10:21:15,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 983 states, 973 states have (on average 1.3504624871531345) internal successors, (1314), 974 states have internal predecessors, (1314), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-17 10:21:15,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 983 states to 983 states and 1326 transitions. [2025-03-17 10:21:15,232 INFO L78 Accepts]: Start accepts. Automaton has 983 states and 1326 transitions. Word has length 160 [2025-03-17 10:21:15,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:21:15,232 INFO L471 AbstractCegarLoop]: Abstraction has 983 states and 1326 transitions. [2025-03-17 10:21:15,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 26.5) internal successors, (318), 12 states have internal predecessors, (318), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-03-17 10:21:15,232 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 1326 transitions. [2025-03-17 10:21:15,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2025-03-17 10:21:15,239 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:21:15,240 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:21:15,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 10:21:15,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 10:21:15,446 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:21:15,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:21:15,447 INFO L85 PathProgramCache]: Analyzing trace with hash -504283781, now seen corresponding path program 1 times [2025-03-17 10:21:15,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:21:15,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698724513] [2025-03-17 10:21:15,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:21:15,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:21:15,609 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 382 statements into 1 equivalence classes. [2025-03-17 10:21:15,765 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 382 of 382 statements. [2025-03-17 10:21:15,765 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:21:15,765 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:21:18,354 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 446 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 10:21:18,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:21:18,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698724513] [2025-03-17 10:21:18,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698724513] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 10:21:18,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001744511] [2025-03-17 10:21:18,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:21:18,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 10:21:18,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 10:21:18,357 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 10:21:18,359 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 10:21:18,661 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 382 statements into 1 equivalence classes. [2025-03-17 10:21:18,883 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 382 of 382 statements. [2025-03-17 10:21:18,883 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:21:18,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:21:18,895 INFO L256 TraceCheckSpWp]: Trace formula consists of 1891 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-17 10:21:18,909 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 10:21:18,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-17 10:21:19,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-03-17 10:21:19,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-03-17 10:21:19,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-03-17 10:21:19,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-03-17 10:21:19,398 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 446 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 10:21:19,399 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 10:21:19,858 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 446 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 10:21:19,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001744511] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 10:21:19,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 10:21:19,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 23 [2025-03-17 10:21:19,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213729740] [2025-03-17 10:21:19,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 10:21:19,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-17 10:21:19,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:21:19,862 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-17 10:21:19,863 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=339, Unknown=0, NotChecked=0, Total=506 [2025-03-17 10:21:19,864 INFO L87 Difference]: Start difference. First operand 983 states and 1326 transitions. Second operand has 23 states, 23 states have (on average 42.78260869565217) internal successors, (984), 23 states have internal predecessors, (984), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-03-17 10:21:21,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:21:21,504 INFO L93 Difference]: Finished difference Result 6115 states and 8302 transitions. [2025-03-17 10:21:21,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-03-17 10:21:21,505 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 42.78260869565217) internal successors, (984), 23 states have internal predecessors, (984), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 382 [2025-03-17 10:21:21,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:21:21,527 INFO L225 Difference]: With dead ends: 6115 [2025-03-17 10:21:21,528 INFO L226 Difference]: Without dead ends: 5714 [2025-03-17 10:21:21,531 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 785 GetRequests, 752 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=296, Invalid=696, Unknown=0, NotChecked=0, Total=992 [2025-03-17 10:21:21,532 INFO L435 NwaCegarLoop]: 1698 mSDtfsCounter, 7472 mSDsluCounter, 15494 mSDsCounter, 0 mSdLazyCounter, 1876 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7482 SdHoareTripleChecker+Valid, 17192 SdHoareTripleChecker+Invalid, 1911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-17 10:21:21,532 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7482 Valid, 17192 Invalid, 1911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1876 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-17 10:21:21,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5714 states. [2025-03-17 10:21:21,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5714 to 1829. [2025-03-17 10:21:21,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1829 states, 1813 states have (on average 1.346938775510204) internal successors, (2442), 1814 states have internal predecessors, (2442), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-17 10:21:21,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2466 transitions. [2025-03-17 10:21:21,641 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2466 transitions. Word has length 382 [2025-03-17 10:21:21,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:21:21,642 INFO L471 AbstractCegarLoop]: Abstraction has 1829 states and 2466 transitions. [2025-03-17 10:21:21,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 42.78260869565217) internal successors, (984), 23 states have internal predecessors, (984), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-03-17 10:21:21,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2466 transitions. [2025-03-17 10:21:21,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 827 [2025-03-17 10:21:21,657 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:21:21,658 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:21:21,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-17 10:21:21,858 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,SelfDestructingSolverStorable8 [2025-03-17 10:21:21,859 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:21:21,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:21:21,859 INFO L85 PathProgramCache]: Analyzing trace with hash 270438979, now seen corresponding path program 2 times [2025-03-17 10:21:21,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:21:21,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815957432] [2025-03-17 10:21:21,860 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 10:21:21,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:21:22,121 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 826 statements into 2 equivalence classes. [2025-03-17 10:21:22,147 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 71 of 826 statements. [2025-03-17 10:21:22,147 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 10:21:22,147 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:21:22,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3336 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3336 trivial. 0 not checked. [2025-03-17 10:21:22,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:21:22,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815957432] [2025-03-17 10:21:22,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815957432] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:21:22,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:21:22,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 10:21:22,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449198805] [2025-03-17 10:21:22,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:21:22,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 10:21:22,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:21:22,279 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 10:21:22,279 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 10:21:22,279 INFO L87 Difference]: Start difference. First operand 1829 states and 2466 transitions. Second operand has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:21:22,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:21:22,630 INFO L93 Difference]: Finished difference Result 2328 states and 3151 transitions. [2025-03-17 10:21:22,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 10:21:22,631 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 826 [2025-03-17 10:21:22,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:21:22,639 INFO L225 Difference]: With dead ends: 2328 [2025-03-17 10:21:22,639 INFO L226 Difference]: Without dead ends: 1930 [2025-03-17 10:21:22,640 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-17 10:21:22,641 INFO L435 NwaCegarLoop]: 376 mSDtfsCounter, 80 mSDsluCounter, 1251 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 10:21:22,641 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 1627 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 10:21:22,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1930 states. [2025-03-17 10:21:22,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1930 to 1835. [2025-03-17 10:21:22,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1835 states, 1819 states have (on average 1.3457943925233644) internal successors, (2448), 1820 states have internal predecessors, (2448), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-17 10:21:22,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1835 states to 1835 states and 2472 transitions. [2025-03-17 10:21:22,686 INFO L78 Accepts]: Start accepts. Automaton has 1835 states and 2472 transitions. Word has length 826 [2025-03-17 10:21:22,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:21:22,687 INFO L471 AbstractCegarLoop]: Abstraction has 1835 states and 2472 transitions. [2025-03-17 10:21:22,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:21:22,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1835 states and 2472 transitions. [2025-03-17 10:21:22,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 828 [2025-03-17 10:21:22,700 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:21:22,701 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:21:22,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-17 10:21:22,701 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:21:22,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:21:22,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1226477423, now seen corresponding path program 1 times [2025-03-17 10:21:22,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:21:22,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460360632] [2025-03-17 10:21:22,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:21:22,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:21:22,889 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 827 statements into 1 equivalence classes. [2025-03-17 10:21:23,198 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 827 of 827 statements. [2025-03-17 10:21:23,198 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:21:23,198 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:21:24,567 INFO L134 CoverageAnalysis]: Checked inductivity of 3336 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3336 trivial. 0 not checked. [2025-03-17 10:21:24,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:21:24,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460360632] [2025-03-17 10:21:24,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460360632] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:21:24,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:21:24,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 10:21:24,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641276524] [2025-03-17 10:21:24,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:21:24,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 10:21:24,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:21:24,569 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 10:21:24,569 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 10:21:24,569 INFO L87 Difference]: Start difference. First operand 1835 states and 2472 transitions. Second operand has 6 states, 6 states have (on average 26.0) internal successors, (156), 6 states have internal predecessors, (156), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:21:24,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:21:24,886 INFO L93 Difference]: Finished difference Result 2254 states and 3044 transitions. [2025-03-17 10:21:24,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 10:21:24,887 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 6 states have internal predecessors, (156), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 827 [2025-03-17 10:21:24,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:21:24,894 INFO L225 Difference]: With dead ends: 2254 [2025-03-17 10:21:24,895 INFO L226 Difference]: Without dead ends: 1850 [2025-03-17 10:21:24,896 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-17 10:21:24,896 INFO L435 NwaCegarLoop]: 356 mSDtfsCounter, 14 mSDsluCounter, 1156 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1512 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 10:21:24,896 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 1512 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 10:21:24,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1850 states. [2025-03-17 10:21:24,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1850 to 1847. [2025-03-17 10:21:24,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1847 states, 1831 states have (on average 1.345166575641726) internal successors, (2463), 1832 states have internal predecessors, (2463), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-17 10:21:24,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1847 states to 1847 states and 2487 transitions. [2025-03-17 10:21:24,941 INFO L78 Accepts]: Start accepts. Automaton has 1847 states and 2487 transitions. Word has length 827 [2025-03-17 10:21:24,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:21:24,942 INFO L471 AbstractCegarLoop]: Abstraction has 1847 states and 2487 transitions. [2025-03-17 10:21:24,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 6 states have internal predecessors, (156), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:21:24,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1847 states and 2487 transitions. [2025-03-17 10:21:24,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 829 [2025-03-17 10:21:24,949 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:21:24,949 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:21:24,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-17 10:21:24,950 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:21:24,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:21:24,950 INFO L85 PathProgramCache]: Analyzing trace with hash 280153834, now seen corresponding path program 1 times [2025-03-17 10:21:24,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:21:24,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934120544] [2025-03-17 10:21:24,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:21:24,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:21:25,226 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 828 statements into 1 equivalence classes. [2025-03-17 10:21:25,554 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 828 of 828 statements. [2025-03-17 10:21:25,555 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:21:25,555 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:21:27,234 INFO L134 CoverageAnalysis]: Checked inductivity of 3336 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3336 trivial. 0 not checked. [2025-03-17 10:21:27,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:21:27,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934120544] [2025-03-17 10:21:27,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934120544] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:21:27,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:21:27,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-17 10:21:27,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183597918] [2025-03-17 10:21:27,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:21:27,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 10:21:27,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:21:27,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 10:21:27,236 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-17 10:21:27,237 INFO L87 Difference]: Start difference. First operand 1847 states and 2487 transitions. Second operand has 9 states, 9 states have (on average 17.444444444444443) internal successors, (157), 9 states have internal predecessors, (157), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:21:27,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:21:27,732 INFO L93 Difference]: Finished difference Result 2296 states and 3101 transitions. [2025-03-17 10:21:27,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 10:21:27,734 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.444444444444443) internal successors, (157), 9 states have internal predecessors, (157), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 828 [2025-03-17 10:21:27,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:21:27,742 INFO L225 Difference]: With dead ends: 2296 [2025-03-17 10:21:27,743 INFO L226 Difference]: Without dead ends: 1880 [2025-03-17 10:21:27,745 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2025-03-17 10:21:27,746 INFO L435 NwaCegarLoop]: 357 mSDtfsCounter, 31 mSDsluCounter, 2123 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 2480 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 10:21:27,746 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 2480 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 10:21:27,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2025-03-17 10:21:27,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1871. [2025-03-17 10:21:27,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1871 states, 1855 states have (on average 1.3423180592991915) internal successors, (2490), 1856 states have internal predecessors, (2490), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-17 10:21:27,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1871 states to 1871 states and 2514 transitions. [2025-03-17 10:21:27,794 INFO L78 Accepts]: Start accepts. Automaton has 1871 states and 2514 transitions. Word has length 828 [2025-03-17 10:21:27,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:21:27,794 INFO L471 AbstractCegarLoop]: Abstraction has 1871 states and 2514 transitions. [2025-03-17 10:21:27,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.444444444444443) internal successors, (157), 9 states have internal predecessors, (157), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:21:27,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1871 states and 2514 transitions. [2025-03-17 10:21:27,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 830 [2025-03-17 10:21:27,800 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:21:27,801 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:21:27,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-17 10:21:27,801 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:21:27,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:21:27,802 INFO L85 PathProgramCache]: Analyzing trace with hash -956975753, now seen corresponding path program 1 times [2025-03-17 10:21:27,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:21:27,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092261703] [2025-03-17 10:21:27,802 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:21:27,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:21:28,027 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 829 statements into 1 equivalence classes. [2025-03-17 10:21:28,245 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 829 of 829 statements. [2025-03-17 10:21:28,246 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:21:28,246 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:21:35,373 INFO L134 CoverageAnalysis]: Checked inductivity of 3336 backedges. 0 proven. 3332 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 10:21:35,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:21:35,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092261703] [2025-03-17 10:21:35,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092261703] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 10:21:35,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122781579] [2025-03-17 10:21:35,374 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:21:35,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 10:21:35,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 10:21:35,376 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 10:21:35,378 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 10:21:35,972 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 829 statements into 1 equivalence classes. [2025-03-17 10:21:36,421 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 829 of 829 statements. [2025-03-17 10:21:36,421 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:21:36,421 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:21:36,445 INFO L256 TraceCheckSpWp]: Trace formula consists of 4147 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-17 10:21:36,456 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 10:21:36,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-17 10:21:36,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-03-17 10:21:36,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-03-17 10:21:36,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-03-17 10:21:36,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-03-17 10:21:36,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-03-17 10:21:36,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-03-17 10:21:37,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-03-17 10:21:37,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-03-17 10:21:37,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-03-17 10:21:37,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-03-17 10:21:37,307 INFO L134 CoverageAnalysis]: Checked inductivity of 3336 backedges. 0 proven. 3332 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 10:21:37,307 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 10:21:38,222 INFO L134 CoverageAnalysis]: Checked inductivity of 3336 backedges. 0 proven. 3332 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 10:21:38,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122781579] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 10:21:38,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 10:21:38,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14, 14] total 42 [2025-03-17 10:21:38,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153586700] [2025-03-17 10:21:38,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 10:21:38,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2025-03-17 10:21:38,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:21:38,228 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2025-03-17 10:21:38,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=1127, Unknown=0, NotChecked=0, Total=1722 [2025-03-17 10:21:38,230 INFO L87 Difference]: Start difference. First operand 1871 states and 2514 transitions. Second operand has 42 states, 42 states have (on average 55.214285714285715) internal successors, (2319), 42 states have internal predecessors, (2319), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-03-17 10:21:41,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:21:41,965 INFO L93 Difference]: Finished difference Result 13563 states and 18212 transitions. [2025-03-17 10:21:41,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2025-03-17 10:21:41,966 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 55.214285714285715) internal successors, (2319), 42 states have internal predecessors, (2319), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 829 [2025-03-17 10:21:41,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:21:42,011 INFO L225 Difference]: With dead ends: 13563 [2025-03-17 10:21:42,011 INFO L226 Difference]: Without dead ends: 13120 [2025-03-17 10:21:42,016 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1699 GetRequests, 1635 SyntacticMatches, 3 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1333 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1128, Invalid=2778, Unknown=0, NotChecked=0, Total=3906 [2025-03-17 10:21:42,017 INFO L435 NwaCegarLoop]: 3715 mSDtfsCounter, 17969 mSDsluCounter, 39694 mSDsCounter, 0 mSdLazyCounter, 4712 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17991 SdHoareTripleChecker+Valid, 43409 SdHoareTripleChecker+Invalid, 4805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 4712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-03-17 10:21:42,018 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17991 Valid, 43409 Invalid, 4805 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [93 Valid, 4712 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-03-17 10:21:42,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13120 states. [2025-03-17 10:21:42,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13120 to 3563. [2025-03-17 10:21:42,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3563 states, 3535 states have (on average 1.3425742574257427) internal successors, (4746), 3536 states have internal predecessors, (4746), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2025-03-17 10:21:42,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3563 states to 3563 states and 4794 transitions. [2025-03-17 10:21:42,150 INFO L78 Accepts]: Start accepts. Automaton has 3563 states and 4794 transitions. Word has length 829 [2025-03-17 10:21:42,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:21:42,152 INFO L471 AbstractCegarLoop]: Abstraction has 3563 states and 4794 transitions. [2025-03-17 10:21:42,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 55.214285714285715) internal successors, (2319), 42 states have internal predecessors, (2319), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-03-17 10:21:42,153 INFO L276 IsEmpty]: Start isEmpty. Operand 3563 states and 4794 transitions. [2025-03-17 10:21:42,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1718 [2025-03-17 10:21:42,206 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:21:42,207 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:21:42,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-17 10:21:42,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 10:21:42,407 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:21:42,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:21:42,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1118259737, now seen corresponding path program 2 times [2025-03-17 10:21:42,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:21:42,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728150744] [2025-03-17 10:21:42,408 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 10:21:42,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:21:42,788 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 1717 statements into 2 equivalence classes. [2025-03-17 10:21:42,922 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 74 of 1717 statements. [2025-03-17 10:21:42,922 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 10:21:42,922 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:21:43,426 INFO L134 CoverageAnalysis]: Checked inductivity of 17100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17100 trivial. 0 not checked. [2025-03-17 10:21:43,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:21:43,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728150744] [2025-03-17 10:21:43,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728150744] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:21:43,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:21:43,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2025-03-17 10:21:43,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160015534] [2025-03-17 10:21:43,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:21:43,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-17 10:21:43,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:21:43,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-17 10:21:43,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2025-03-17 10:21:43,429 INFO L87 Difference]: Start difference. First operand 3563 states and 4794 transitions. Second operand has 17 states, 17 states have (on average 9.294117647058824) internal successors, (158), 17 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:21:45,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:21:45,226 INFO L93 Difference]: Finished difference Result 4111 states and 5555 transitions. [2025-03-17 10:21:45,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-17 10:21:45,228 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 9.294117647058824) internal successors, (158), 17 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 1717 [2025-03-17 10:21:45,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:21:45,242 INFO L225 Difference]: With dead ends: 4111 [2025-03-17 10:21:45,243 INFO L226 Difference]: Without dead ends: 3671 [2025-03-17 10:21:45,245 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2025-03-17 10:21:45,245 INFO L435 NwaCegarLoop]: 319 mSDtfsCounter, 59 mSDsluCounter, 4088 mSDsCounter, 0 mSdLazyCounter, 1549 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 4407 SdHoareTripleChecker+Invalid, 1551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-17 10:21:45,245 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 4407 Invalid, 1551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1549 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-17 10:21:45,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3671 states. [2025-03-17 10:21:45,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3671 to 3599. [2025-03-17 10:21:45,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3599 states, 3571 states have (on average 1.3433211985438254) internal successors, (4797), 3572 states have internal predecessors, (4797), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2025-03-17 10:21:45,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3599 states to 3599 states and 4845 transitions. [2025-03-17 10:21:45,334 INFO L78 Accepts]: Start accepts. Automaton has 3599 states and 4845 transitions. Word has length 1717 [2025-03-17 10:21:45,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:21:45,336 INFO L471 AbstractCegarLoop]: Abstraction has 3599 states and 4845 transitions. [2025-03-17 10:21:45,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 9.294117647058824) internal successors, (158), 17 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:21:45,336 INFO L276 IsEmpty]: Start isEmpty. Operand 3599 states and 4845 transitions. [2025-03-17 10:21:45,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1718 [2025-03-17 10:21:45,394 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:21:45,394 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:21:45,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-17 10:21:45,395 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:21:45,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:21:45,397 INFO L85 PathProgramCache]: Analyzing trace with hash 969950972, now seen corresponding path program 1 times [2025-03-17 10:21:45,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:21:45,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604705877] [2025-03-17 10:21:45,398 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:21:45,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:21:45,832 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1717 statements into 1 equivalence classes. [2025-03-17 10:21:46,646 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1717 of 1717 statements. [2025-03-17 10:21:46,646 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:21:46,646 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:21:49,162 INFO L134 CoverageAnalysis]: Checked inductivity of 17100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17100 trivial. 0 not checked. [2025-03-17 10:21:49,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:21:49,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604705877] [2025-03-17 10:21:49,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604705877] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:21:49,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:21:49,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 10:21:49,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431443128] [2025-03-17 10:21:49,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:21:49,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 10:21:49,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:21:49,164 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 10:21:49,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 10:21:49,164 INFO L87 Difference]: Start difference. First operand 3599 states and 4845 transitions. Second operand has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:21:49,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:21:49,336 INFO L93 Difference]: Finished difference Result 4084 states and 5501 transitions. [2025-03-17 10:21:49,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 10:21:49,337 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 1717 [2025-03-17 10:21:49,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:21:49,344 INFO L225 Difference]: With dead ends: 4084 [2025-03-17 10:21:49,345 INFO L226 Difference]: Without dead ends: 3608 [2025-03-17 10:21:49,347 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 10:21:49,348 INFO L435 NwaCegarLoop]: 359 mSDtfsCounter, 8 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1259 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 10:21:49,348 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1259 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 10:21:49,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3608 states. [2025-03-17 10:21:49,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3608 to 3608. [2025-03-17 10:21:49,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3608 states, 3580 states have (on average 1.3424581005586593) internal successors, (4806), 3581 states have internal predecessors, (4806), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2025-03-17 10:21:49,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3608 states to 3608 states and 4854 transitions. [2025-03-17 10:21:49,417 INFO L78 Accepts]: Start accepts. Automaton has 3608 states and 4854 transitions. Word has length 1717 [2025-03-17 10:21:49,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:21:49,418 INFO L471 AbstractCegarLoop]: Abstraction has 3608 states and 4854 transitions. [2025-03-17 10:21:49,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:21:49,418 INFO L276 IsEmpty]: Start isEmpty. Operand 3608 states and 4854 transitions. [2025-03-17 10:21:49,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1719 [2025-03-17 10:21:49,433 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:21:49,434 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:21:49,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-17 10:21:49,434 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:21:49,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:21:49,435 INFO L85 PathProgramCache]: Analyzing trace with hash -2005873134, now seen corresponding path program 1 times [2025-03-17 10:21:49,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:21:49,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458391755] [2025-03-17 10:21:49,435 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:21:49,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:21:49,825 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1718 statements into 1 equivalence classes. [2025-03-17 10:21:50,469 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1718 of 1718 statements. [2025-03-17 10:21:50,470 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:21:50,470 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:22:22,554 INFO L134 CoverageAnalysis]: Checked inductivity of 17100 backedges. 0 proven. 17096 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 10:22:22,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:22:22,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458391755] [2025-03-17 10:22:22,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458391755] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 10:22:22,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054724505] [2025-03-17 10:22:22,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:22:22,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 10:22:22,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 10:22:22,556 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 10:22:22,557 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 10:22:23,658 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1718 statements into 1 equivalence classes. [2025-03-17 10:22:24,517 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1718 of 1718 statements. [2025-03-17 10:22:24,517 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:22:24,517 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:22:24,563 INFO L256 TraceCheckSpWp]: Trace formula consists of 8660 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-03-17 10:22:24,593 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 10:22:24,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-17 10:22:24,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-03-17 10:22:24,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-03-17 10:22:24,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-03-17 10:22:24,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-03-17 10:22:25,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-03-17 10:22:25,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-03-17 10:22:25,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-03-17 10:22:25,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-03-17 10:22:25,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-03-17 10:22:25,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-03-17 10:22:25,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-03-17 10:22:25,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-03-17 10:22:25,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-03-17 10:22:25,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-03-17 10:22:25,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-03-17 10:22:25,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-03-17 10:22:26,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-03-17 10:22:26,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-03-17 10:22:26,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-03-17 10:22:26,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-03-17 10:22:26,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-03-17 10:22:26,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-03-17 10:22:26,403 INFO L134 CoverageAnalysis]: Checked inductivity of 17100 backedges. 0 proven. 17096 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 10:22:26,403 INFO L312 TraceCheckSpWp]: Computing backward predicates...