./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-1.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_JEN_test5-1.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 3a97724240a87192496d8328468f54cf5b25ba6881d4dae32505036169c4a273 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 10:27:28,338 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 10:27:28,377 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 10:27:28,381 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 10:27:28,381 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 10:27:28,398 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 10:27:28,398 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 10:27:28,398 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 10:27:28,399 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 10:27:28,399 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 10:27:28,399 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 10:27:28,399 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 10:27:28,399 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 10:27:28,399 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 10:27:28,399 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 10:27:28,399 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 10:27:28,399 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 10:27:28,399 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 10:27:28,401 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 10:27:28,401 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 10:27:28,401 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 10:27:28,401 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 10:27:28,401 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 10:27:28,401 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 10:27:28,401 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 10:27:28,401 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 10:27:28,402 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 10:27:28,402 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 10:27:28,402 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 10:27:28,402 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 10:27:28,402 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 10:27:28,402 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 10:27:28,402 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 10:27:28,402 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 10:27:28,402 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 10:27:28,402 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 10:27:28,402 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 10:27:28,402 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 10:27:28,403 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 10:27:28,403 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 10:27:28,403 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 10:27:28,403 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 10:27:28,403 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 10:27:28,403 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 -> 3a97724240a87192496d8328468f54cf5b25ba6881d4dae32505036169c4a273 [2025-03-17 10:27:28,619 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 10:27:28,625 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 10:27:28,626 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 10:27:28,627 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 10:27:28,627 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 10:27:28,628 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-1.i [2025-03-17 10:27:29,768 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c64a66e3/72ab93a95ec04efd9ae77c52d28341fa/FLAG35ca0829e [2025-03-17 10:27:30,045 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 10:27:30,046 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-1.i [2025-03-17 10:27:30,061 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c64a66e3/72ab93a95ec04efd9ae77c52d28341fa/FLAG35ca0829e [2025-03-17 10:27:30,332 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c64a66e3/72ab93a95ec04efd9ae77c52d28341fa [2025-03-17 10:27:30,334 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 10:27:30,335 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 10:27:30,337 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 10:27:30,337 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 10:27:30,340 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 10:27:30,341 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 10:27:30" (1/1) ... [2025-03-17 10:27:30,343 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@338fa27a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:27:30, skipping insertion in model container [2025-03-17 10:27:30,343 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 10:27:30" (1/1) ... [2025-03-17 10:27:30,379 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 10:27:30,700 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_JEN_test5-1.i[33021,33034] [2025-03-17 10:27:30,812 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_JEN_test5-1.i[49681,49694] [2025-03-17 10:27:30,820 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 10:27:30,837 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 10:27:30,859 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_JEN_test5-1.i[33021,33034] [2025-03-17 10:27:30,911 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_JEN_test5-1.i[49681,49694] [2025-03-17 10:27:30,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 10:27:30,951 INFO L204 MainTranslator]: Completed translation [2025-03-17 10:27:30,952 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:27:30 WrapperNode [2025-03-17 10:27:30,952 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 10:27:30,953 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 10:27:30,953 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 10:27:30,953 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 10:27:30,957 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:27:30" (1/1) ... [2025-03-17 10:27:30,988 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:27:30" (1/1) ... [2025-03-17 10:27:31,067 INFO L138 Inliner]: procedures = 177, calls = 373, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1974 [2025-03-17 10:27:31,067 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 10:27:31,068 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 10:27:31,068 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 10:27:31,068 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 10:27:31,080 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:27:30" (1/1) ... [2025-03-17 10:27:31,082 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:27:30" (1/1) ... [2025-03-17 10:27:31,097 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:27:30" (1/1) ... [2025-03-17 10:27:31,182 INFO L175 MemorySlicer]: Split 349 memory accesses to 3 slices as follows [2, 323, 24]. 93 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 83 writes are split as follows [0, 82, 1]. [2025-03-17 10:27:31,182 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:27:30" (1/1) ... [2025-03-17 10:27:31,182 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:27:30" (1/1) ... [2025-03-17 10:27:31,219 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:27:30" (1/1) ... [2025-03-17 10:27:31,222 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:27:30" (1/1) ... [2025-03-17 10:27:31,227 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:27:30" (1/1) ... [2025-03-17 10:27:31,232 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:27:30" (1/1) ... [2025-03-17 10:27:31,241 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 10:27:31,242 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 10:27:31,242 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 10:27:31,242 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 10:27:31,243 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:27:30" (1/1) ... [2025-03-17 10:27:31,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 10:27:31,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 10:27:31,272 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 10:27:31,276 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 10:27:31,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 10:27:31,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 10:27:31,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-17 10:27:31,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-17 10:27:31,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-17 10:27:31,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 10:27:31,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 10:27:31,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-17 10:27:31,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-17 10:27:31,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-17 10:27:31,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-03-17 10:27:31,297 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-17 10:27:31,297 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-17 10:27:31,297 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-03-17 10:27:31,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 10:27:31,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 10:27:31,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-17 10:27:31,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-17 10:27:31,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-17 10:27:31,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 10:27:31,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-17 10:27:31,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-17 10:27:31,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-17 10:27:31,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 10:27:31,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 10:27:31,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 10:27:31,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-17 10:27:31,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 10:27:31,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 10:27:31,494 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 10:27:31,495 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 10:27:32,862 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L734: call ULTIMATE.dealloc(main_~#j~0#1.base, main_~#j~0#1.offset);havoc main_~#j~0#1.base, main_~#j~0#1.offset; [2025-03-17 10:27:32,986 INFO L? ?]: Removed 482 outVars from TransFormulas that were not future-live. [2025-03-17 10:27:32,990 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 10:27:33,034 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 10:27:33,035 INFO L336 CfgBuilder]: Removed 2 assume(true) statements. [2025-03-17 10:27:33,035 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 10:27:33 BoogieIcfgContainer [2025-03-17 10:27:33,035 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 10:27:33,037 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 10:27:33,038 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 10:27:33,041 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 10:27:33,041 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 10:27:30" (1/3) ... [2025-03-17 10:27:33,042 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@671f37d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 10:27:33, skipping insertion in model container [2025-03-17 10:27:33,042 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:27:30" (2/3) ... [2025-03-17 10:27:33,042 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@671f37d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 10:27:33, skipping insertion in model container [2025-03-17 10:27:33,042 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 10:27:33" (3/3) ... [2025-03-17 10:27:33,044 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test5-1.i [2025-03-17 10:27:33,054 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 10:27:33,056 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_JEN_test5-1.i that has 5 procedures, 565 locations, 1 initial locations, 46 loop locations, and 2 error locations. [2025-03-17 10:27:33,124 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 10:27:33,135 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;@5afdefcf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 10:27:33,135 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-17 10:27:33,141 INFO L276 IsEmpty]: Start isEmpty. Operand has 557 states, 541 states have (on average 1.6229205175600738) internal successors, (878), 548 states have internal predecessors, (878), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2025-03-17 10:27:33,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-03-17 10:27:33,146 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:27:33,146 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-17 10:27:33,146 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:27:33,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:27:33,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1077795921, now seen corresponding path program 1 times [2025-03-17 10:27:33,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:27:33,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77766489] [2025-03-17 10:27:33,159 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:27:33,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:27:33,223 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 10:27:33,232 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 10:27:33,234 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:27:33,234 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:27:33,321 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 10:27:33,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:27:33,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77766489] [2025-03-17 10:27:33,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77766489] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:27:33,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:27:33,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 10:27:33,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884270452] [2025-03-17 10:27:33,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:27:33,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 10:27:33,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:27:33,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 10:27:33,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 10:27:33,344 INFO L87 Difference]: Start difference. First operand has 557 states, 541 states have (on average 1.6229205175600738) internal successors, (878), 548 states have internal predecessors, (878), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 10:27:33,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:27:33,665 INFO L93 Difference]: Finished difference Result 1656 states and 2696 transitions. [2025-03-17 10:27:33,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 10:27:33,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-03-17 10:27:33,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:27:33,679 INFO L225 Difference]: With dead ends: 1656 [2025-03-17 10:27:33,679 INFO L226 Difference]: Without dead ends: 1097 [2025-03-17 10:27:33,685 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 10:27:33,687 INFO L435 NwaCegarLoop]: 748 mSDtfsCounter, 778 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 1492 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 10:27:33,687 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 1492 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 10:27:33,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2025-03-17 10:27:33,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 555. [2025-03-17 10:27:33,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 540 states have (on average 1.4666666666666666) internal successors, (792), 546 states have internal predecessors, (792), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2025-03-17 10:27:33,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 814 transitions. [2025-03-17 10:27:33,754 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 814 transitions. Word has length 6 [2025-03-17 10:27:33,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:27:33,754 INFO L471 AbstractCegarLoop]: Abstraction has 555 states and 814 transitions. [2025-03-17 10:27:33,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 10:27:33,755 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 814 transitions. [2025-03-17 10:27:33,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2025-03-17 10:27:33,761 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:27:33,761 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:27:33,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 10:27:33,761 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:27:33,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:27:33,762 INFO L85 PathProgramCache]: Analyzing trace with hash 737862267, now seen corresponding path program 1 times [2025-03-17 10:27:33,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:27:33,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977707578] [2025-03-17 10:27:33,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:27:33,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:27:33,850 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 200 statements into 1 equivalence classes. [2025-03-17 10:27:33,873 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 200 of 200 statements. [2025-03-17 10:27:33,873 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:27:33,873 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:27:34,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:27:34,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:27:34,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977707578] [2025-03-17 10:27:34,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977707578] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:27:34,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:27:34,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 10:27:34,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927870586] [2025-03-17 10:27:34,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:27:34,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 10:27:34,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:27:34,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 10:27:34,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 10:27:34,373 INFO L87 Difference]: Start difference. First operand 555 states and 814 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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 10:27:34,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:27:34,549 INFO L93 Difference]: Finished difference Result 1128 states and 1656 transitions. [2025-03-17 10:27:34,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 10:27:34,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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 200 [2025-03-17 10:27:34,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:27:34,553 INFO L225 Difference]: With dead ends: 1128 [2025-03-17 10:27:34,554 INFO L226 Difference]: Without dead ends: 575 [2025-03-17 10:27:34,556 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 10:27:34,558 INFO L435 NwaCegarLoop]: 730 mSDtfsCounter, 8 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1445 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 10:27:34,558 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1445 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 10:27:34,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2025-03-17 10:27:34,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 575. [2025-03-17 10:27:34,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 560 states have (on average 1.45) internal successors, (812), 566 states have internal predecessors, (812), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2025-03-17 10:27:34,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 834 transitions. [2025-03-17 10:27:34,586 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 834 transitions. Word has length 200 [2025-03-17 10:27:34,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:27:34,586 INFO L471 AbstractCegarLoop]: Abstraction has 575 states and 834 transitions. [2025-03-17 10:27:34,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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 10:27:34,589 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 834 transitions. [2025-03-17 10:27:34,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2025-03-17 10:27:34,596 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:27:34,596 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:27:34,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 10:27:34,597 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:27:34,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:27:34,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1861081670, now seen corresponding path program 1 times [2025-03-17 10:27:34,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:27:34,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373647708] [2025-03-17 10:27:34,598 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:27:34,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:27:34,679 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 200 statements into 1 equivalence classes. [2025-03-17 10:27:34,692 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 200 of 200 statements. [2025-03-17 10:27:34,695 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:27:34,696 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:27:34,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:27:34,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:27:34,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373647708] [2025-03-17 10:27:34,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373647708] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:27:34,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:27:34,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 10:27:34,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090587096] [2025-03-17 10:27:34,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:27:34,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 10:27:34,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:27:34,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 10:27:34,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 10:27:34,951 INFO L87 Difference]: Start difference. First operand 575 states and 834 transitions. Second operand has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 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 10:27:35,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:27:35,117 INFO L93 Difference]: Finished difference Result 1134 states and 1652 transitions. [2025-03-17 10:27:35,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 10:27:35,118 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 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 200 [2025-03-17 10:27:35,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:27:35,120 INFO L225 Difference]: With dead ends: 1134 [2025-03-17 10:27:35,120 INFO L226 Difference]: Without dead ends: 561 [2025-03-17 10:27:35,121 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 10:27:35,121 INFO L435 NwaCegarLoop]: 723 mSDtfsCounter, 105 mSDsluCounter, 1362 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 2085 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 10:27:35,122 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 2085 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 10:27:35,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2025-03-17 10:27:35,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 561. [2025-03-17 10:27:35,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 546 states have (on average 1.4487179487179487) internal successors, (791), 552 states have internal predecessors, (791), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2025-03-17 10:27:35,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 813 transitions. [2025-03-17 10:27:35,134 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 813 transitions. Word has length 200 [2025-03-17 10:27:35,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:27:35,134 INFO L471 AbstractCegarLoop]: Abstraction has 561 states and 813 transitions. [2025-03-17 10:27:35,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 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 10:27:35,135 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 813 transitions. [2025-03-17 10:27:35,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2025-03-17 10:27:35,137 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:27:35,137 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:27:35,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 10:27:35,137 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:27:35,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:27:35,138 INFO L85 PathProgramCache]: Analyzing trace with hash 320089857, now seen corresponding path program 1 times [2025-03-17 10:27:35,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:27:35,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300814329] [2025-03-17 10:27:35,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:27:35,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:27:35,188 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 200 statements into 1 equivalence classes. [2025-03-17 10:27:35,200 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 200 of 200 statements. [2025-03-17 10:27:35,200 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:27:35,200 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:27:35,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:27:35,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:27:35,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300814329] [2025-03-17 10:27:35,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300814329] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:27:35,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:27:35,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 10:27:35,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933564134] [2025-03-17 10:27:35,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:27:35,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 10:27:35,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:27:35,346 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 10:27:35,347 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 10:27:35,347 INFO L87 Difference]: Start difference. First operand 561 states and 813 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 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 10:27:35,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:27:35,493 INFO L93 Difference]: Finished difference Result 1253 states and 1817 transitions. [2025-03-17 10:27:35,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 10:27:35,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 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 200 [2025-03-17 10:27:35,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:27:35,497 INFO L225 Difference]: With dead ends: 1253 [2025-03-17 10:27:35,497 INFO L226 Difference]: Without dead ends: 694 [2025-03-17 10:27:35,499 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 10:27:35,501 INFO L435 NwaCegarLoop]: 742 mSDtfsCounter, 134 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 1477 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 10:27:35,501 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 1477 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 10:27:35,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2025-03-17 10:27:35,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 694. [2025-03-17 10:27:35,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 679 states have (on average 1.4477172312223858) internal successors, (983), 685 states have internal predecessors, (983), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2025-03-17 10:27:35,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1005 transitions. [2025-03-17 10:27:35,521 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1005 transitions. Word has length 200 [2025-03-17 10:27:35,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:27:35,522 INFO L471 AbstractCegarLoop]: Abstraction has 694 states and 1005 transitions. [2025-03-17 10:27:35,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 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 10:27:35,523 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1005 transitions. [2025-03-17 10:27:35,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2025-03-17 10:27:35,526 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:27:35,526 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:27:35,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 10:27:35,526 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:27:35,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:27:35,527 INFO L85 PathProgramCache]: Analyzing trace with hash 894164400, now seen corresponding path program 1 times [2025-03-17 10:27:35,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:27:35,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817078228] [2025-03-17 10:27:35,527 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:27:35,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:27:35,587 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 215 statements into 1 equivalence classes. [2025-03-17 10:27:35,623 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 215 of 215 statements. [2025-03-17 10:27:35,626 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:27:35,626 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:27:35,920 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 10:27:35,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:27:35,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817078228] [2025-03-17 10:27:35,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817078228] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:27:35,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:27:35,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 10:27:35,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434988255] [2025-03-17 10:27:35,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:27:35,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 10:27:35,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:27:35,922 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 10:27:35,923 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 10:27:35,923 INFO L87 Difference]: Start difference. First operand 694 states and 1005 transitions. Second operand has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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 10:27:36,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:27:36,092 INFO L93 Difference]: Finished difference Result 1211 states and 1750 transitions. [2025-03-17 10:27:36,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 10:27:36,093 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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 215 [2025-03-17 10:27:36,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:27:36,096 INFO L225 Difference]: With dead ends: 1211 [2025-03-17 10:27:36,096 INFO L226 Difference]: Without dead ends: 652 [2025-03-17 10:27:36,099 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 10:27:36,100 INFO L435 NwaCegarLoop]: 651 mSDtfsCounter, 30 mSDsluCounter, 1283 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1934 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 10:27:36,101 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1934 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 10:27:36,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2025-03-17 10:27:36,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 652. [2025-03-17 10:27:36,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 637 states have (on average 1.4222919937205651) internal successors, (906), 643 states have internal predecessors, (906), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2025-03-17 10:27:36,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 928 transitions. [2025-03-17 10:27:36,125 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 928 transitions. Word has length 215 [2025-03-17 10:27:36,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:27:36,127 INFO L471 AbstractCegarLoop]: Abstraction has 652 states and 928 transitions. [2025-03-17 10:27:36,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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 10:27:36,127 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 928 transitions. [2025-03-17 10:27:36,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2025-03-17 10:27:36,131 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:27:36,132 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:27:36,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 10:27:36,132 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:27:36,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:27:36,133 INFO L85 PathProgramCache]: Analyzing trace with hash 2092706825, now seen corresponding path program 1 times [2025-03-17 10:27:36,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:27:36,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27596367] [2025-03-17 10:27:36,133 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:27:36,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:27:36,204 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 215 statements into 1 equivalence classes. [2025-03-17 10:27:36,250 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 215 of 215 statements. [2025-03-17 10:27:36,250 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:27:36,250 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:27:36,445 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 10:27:36,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:27:36,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27596367] [2025-03-17 10:27:36,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27596367] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:27:36,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:27:36,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 10:27:36,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938318587] [2025-03-17 10:27:36,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:27:36,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 10:27:36,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:27:36,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 10:27:36,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 10:27:36,447 INFO L87 Difference]: Start difference. First operand 652 states and 928 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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 10:27:36,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:27:36,625 INFO L93 Difference]: Finished difference Result 1456 states and 2078 transitions. [2025-03-17 10:27:36,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 10:27:36,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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 215 [2025-03-17 10:27:36,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:27:36,632 INFO L225 Difference]: With dead ends: 1456 [2025-03-17 10:27:36,632 INFO L226 Difference]: Without dead ends: 939 [2025-03-17 10:27:36,633 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 10:27:36,634 INFO L435 NwaCegarLoop]: 843 mSDtfsCounter, 451 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 1498 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 10:27:36,634 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 1498 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 10:27:36,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2025-03-17 10:27:36,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 937. [2025-03-17 10:27:36,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 914 states have (on average 1.425601750547046) internal successors, (1303), 925 states have internal predecessors, (1303), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 11 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-17 10:27:36,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1341 transitions. [2025-03-17 10:27:36,655 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1341 transitions. Word has length 215 [2025-03-17 10:27:36,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:27:36,656 INFO L471 AbstractCegarLoop]: Abstraction has 937 states and 1341 transitions. [2025-03-17 10:27:36,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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 10:27:36,656 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1341 transitions. [2025-03-17 10:27:36,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2025-03-17 10:27:36,658 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:27:36,658 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:27:36,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 10:27:36,659 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:27:36,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:27:36,659 INFO L85 PathProgramCache]: Analyzing trace with hash -363631475, now seen corresponding path program 1 times [2025-03-17 10:27:36,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:27:36,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882975289] [2025-03-17 10:27:36,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:27:36,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:27:36,727 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 230 statements into 1 equivalence classes. [2025-03-17 10:27:36,764 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 230 of 230 statements. [2025-03-17 10:27:36,765 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:27:36,765 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:27:37,027 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-17 10:27:37,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:27:37,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882975289] [2025-03-17 10:27:37,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882975289] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 10:27:37,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115443335] [2025-03-17 10:27:37,028 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:27:37,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 10:27:37,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 10:27:37,030 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 10:27:37,032 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 10:27:37,301 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 230 statements into 1 equivalence classes. [2025-03-17 10:27:37,434 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 230 of 230 statements. [2025-03-17 10:27:37,435 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:27:37,435 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:27:37,441 INFO L256 TraceCheckSpWp]: Trace formula consists of 1200 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 10:27:37,451 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 10:27:37,485 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-17 10:27:37,485 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 10:27:37,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115443335] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:27:37,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 10:27:37,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-17 10:27:37,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554847857] [2025-03-17 10:27:37,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:27:37,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 10:27:37,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:27:37,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 10:27:37,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 10:27:37,486 INFO L87 Difference]: Start difference. First operand 937 states and 1341 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-17 10:27:37,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:27:37,624 INFO L93 Difference]: Finished difference Result 1290 states and 1875 transitions. [2025-03-17 10:27:37,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 10:27:37,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 230 [2025-03-17 10:27:37,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:27:37,629 INFO L225 Difference]: With dead ends: 1290 [2025-03-17 10:27:37,629 INFO L226 Difference]: Without dead ends: 977 [2025-03-17 10:27:37,631 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 10:27:37,631 INFO L435 NwaCegarLoop]: 649 mSDtfsCounter, 8 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1283 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 10:27:37,632 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1283 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 10:27:37,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2025-03-17 10:27:37,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 977. [2025-03-17 10:27:37,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 954 states have (on average 1.4077568134171907) internal successors, (1343), 965 states have internal predecessors, (1343), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 11 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-17 10:27:37,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1381 transitions. [2025-03-17 10:27:37,660 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1381 transitions. Word has length 230 [2025-03-17 10:27:37,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:27:37,661 INFO L471 AbstractCegarLoop]: Abstraction has 977 states and 1381 transitions. [2025-03-17 10:27:37,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-17 10:27:37,661 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1381 transitions. [2025-03-17 10:27:37,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2025-03-17 10:27:37,663 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:27:37,663 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:27:37,673 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 10:27:37,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 10:27:37,864 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:27:37,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:27:37,865 INFO L85 PathProgramCache]: Analyzing trace with hash 661062446, now seen corresponding path program 1 times [2025-03-17 10:27:37,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:27:37,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570933655] [2025-03-17 10:27:37,865 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:27:37,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:27:37,930 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 230 statements into 1 equivalence classes. [2025-03-17 10:27:37,966 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 230 of 230 statements. [2025-03-17 10:27:37,966 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:27:37,966 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:27:38,163 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-17 10:27:38,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:27:38,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570933655] [2025-03-17 10:27:38,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570933655] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 10:27:38,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133628242] [2025-03-17 10:27:38,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:27:38,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 10:27:38,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 10:27:38,167 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 10:27:38,168 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 10:27:38,446 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 230 statements into 1 equivalence classes. [2025-03-17 10:27:38,580 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 230 of 230 statements. [2025-03-17 10:27:38,580 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:27:38,580 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:27:38,586 INFO L256 TraceCheckSpWp]: Trace formula consists of 1204 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 10:27:38,593 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 10:27:38,660 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-17 10:27:38,660 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 10:27:38,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133628242] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:27:38,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 10:27:38,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-17 10:27:38,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325851352] [2025-03-17 10:27:38,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:27:38,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 10:27:38,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:27:38,661 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 10:27:38,661 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 10:27:38,662 INFO L87 Difference]: Start difference. First operand 977 states and 1381 transitions. Second operand has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-17 10:27:38,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:27:38,813 INFO L93 Difference]: Finished difference Result 1302 states and 1867 transitions. [2025-03-17 10:27:38,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 10:27:38,813 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 230 [2025-03-17 10:27:38,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:27:38,817 INFO L225 Difference]: With dead ends: 1302 [2025-03-17 10:27:38,817 INFO L226 Difference]: Without dead ends: 949 [2025-03-17 10:27:38,817 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-17 10:27:38,818 INFO L435 NwaCegarLoop]: 642 mSDtfsCounter, 105 mSDsluCounter, 1200 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1842 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 10:27:38,818 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 1842 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 10:27:38,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2025-03-17 10:27:38,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 949. [2025-03-17 10:27:38,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 926 states have (on average 1.4049676025917928) internal successors, (1301), 937 states have internal predecessors, (1301), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 11 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-17 10:27:38,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1339 transitions. [2025-03-17 10:27:38,835 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1339 transitions. Word has length 230 [2025-03-17 10:27:38,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:27:38,835 INFO L471 AbstractCegarLoop]: Abstraction has 949 states and 1339 transitions. [2025-03-17 10:27:38,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-17 10:27:38,835 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1339 transitions. [2025-03-17 10:27:38,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2025-03-17 10:27:38,838 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:27:38,838 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:27:38,847 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 10:27:39,038 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,SelfDestructingSolverStorable7 [2025-03-17 10:27:39,039 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:27:39,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:27:39,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1536885383, now seen corresponding path program 1 times [2025-03-17 10:27:39,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:27:39,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757146288] [2025-03-17 10:27:39,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:27:39,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:27:39,104 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 230 statements into 1 equivalence classes. [2025-03-17 10:27:39,133 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 230 of 230 statements. [2025-03-17 10:27:39,134 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:27:39,134 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:27:39,324 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-17 10:27:39,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:27:39,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757146288] [2025-03-17 10:27:39,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757146288] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 10:27:39,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303431324] [2025-03-17 10:27:39,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:27:39,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 10:27:39,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 10:27:39,327 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 10:27:39,329 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 10:27:39,642 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 230 statements into 1 equivalence classes. [2025-03-17 10:27:39,767 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 230 of 230 statements. [2025-03-17 10:27:39,767 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:27:39,767 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:27:39,773 INFO L256 TraceCheckSpWp]: Trace formula consists of 1176 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 10:27:39,778 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 10:27:39,948 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-17 10:27:39,949 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 10:27:40,145 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-17 10:27:40,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303431324] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 10:27:40,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 10:27:40,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-03-17 10:27:40,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031504273] [2025-03-17 10:27:40,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 10:27:40,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 10:27:40,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:27:40,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 10:27:40,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-17 10:27:40,147 INFO L87 Difference]: Start difference. First operand 949 states and 1339 transitions. Second operand has 7 states, 7 states have (on average 74.28571428571429) internal successors, (520), 7 states have internal predecessors, (520), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2025-03-17 10:27:40,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:27:40,525 INFO L93 Difference]: Finished difference Result 2526 states and 3587 transitions. [2025-03-17 10:27:40,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 10:27:40,525 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 74.28571428571429) internal successors, (520), 7 states have internal predecessors, (520), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 230 [2025-03-17 10:27:40,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:27:40,534 INFO L225 Difference]: With dead ends: 2526 [2025-03-17 10:27:40,534 INFO L226 Difference]: Without dead ends: 2201 [2025-03-17 10:27:40,536 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 457 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-17 10:27:40,536 INFO L435 NwaCegarLoop]: 698 mSDtfsCounter, 2183 mSDsluCounter, 2486 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2214 SdHoareTripleChecker+Valid, 3184 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 10:27:40,536 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2214 Valid, 3184 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 10:27:40,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2201 states. [2025-03-17 10:27:40,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2201 to 1695. [2025-03-17 10:27:40,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1695 states, 1657 states have (on average 1.3886541943270971) internal successors, (2301), 1668 states have internal predecessors, (2301), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 26 states have call predecessors, (34), 34 states have call successors, (34) [2025-03-17 10:27:40,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1695 states to 1695 states and 2369 transitions. [2025-03-17 10:27:40,595 INFO L78 Accepts]: Start accepts. Automaton has 1695 states and 2369 transitions. Word has length 230 [2025-03-17 10:27:40,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:27:40,595 INFO L471 AbstractCegarLoop]: Abstraction has 1695 states and 2369 transitions. [2025-03-17 10:27:40,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.28571428571429) internal successors, (520), 7 states have internal predecessors, (520), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2025-03-17 10:27:40,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1695 states and 2369 transitions. [2025-03-17 10:27:40,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2025-03-17 10:27:40,603 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:27:40,604 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:27:40,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-17 10:27:40,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 10:27:40,805 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:27:40,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:27:40,805 INFO L85 PathProgramCache]: Analyzing trace with hash -434411972, now seen corresponding path program 1 times [2025-03-17 10:27:40,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:27:40,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716266037] [2025-03-17 10:27:40,805 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:27:40,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:27:40,953 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 656 statements into 1 equivalence classes. [2025-03-17 10:27:41,058 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 656 of 656 statements. [2025-03-17 10:27:41,058 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:27:41,059 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:27:41,551 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 4 proven. 357 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2025-03-17 10:27:41,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:27:41,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716266037] [2025-03-17 10:27:41,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716266037] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 10:27:41,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387366780] [2025-03-17 10:27:41,552 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:27:41,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 10:27:41,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 10:27:41,554 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 10:27:41,555 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 10:27:42,054 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 656 statements into 1 equivalence classes. [2025-03-17 10:27:42,459 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 656 of 656 statements. [2025-03-17 10:27:42,459 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:27:42,459 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:27:42,477 INFO L256 TraceCheckSpWp]: Trace formula consists of 3246 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 10:27:42,488 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 10:27:43,112 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 0 proven. 844 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-17 10:27:43,113 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 10:27:43,709 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 0 proven. 844 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-17 10:27:43,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387366780] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 10:27:43,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 10:27:43,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2025-03-17 10:27:43,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210611242] [2025-03-17 10:27:43,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 10:27:43,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-17 10:27:43,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:27:43,713 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-17 10:27:43,713 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2025-03-17 10:27:43,714 INFO L87 Difference]: Start difference. First operand 1695 states and 2369 transitions. Second operand has 14 states, 14 states have (on average 110.57142857142857) internal successors, (1548), 14 states have internal predecessors, (1548), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2025-03-17 10:27:46,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:27:46,669 INFO L93 Difference]: Finished difference Result 5448 states and 7654 transitions. [2025-03-17 10:27:46,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-17 10:27:46,670 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 110.57142857142857) internal successors, (1548), 14 states have internal predecessors, (1548), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 656 [2025-03-17 10:27:46,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:27:46,689 INFO L225 Difference]: With dead ends: 5448 [2025-03-17 10:27:46,689 INFO L226 Difference]: Without dead ends: 4373 [2025-03-17 10:27:46,692 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1326 GetRequests, 1302 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=238, Invalid=412, Unknown=0, NotChecked=0, Total=650 [2025-03-17 10:27:46,693 INFO L435 NwaCegarLoop]: 1002 mSDtfsCounter, 15343 mSDsluCounter, 5172 mSDsCounter, 0 mSdLazyCounter, 1462 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15343 SdHoareTripleChecker+Valid, 6174 SdHoareTripleChecker+Invalid, 1627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 1462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-03-17 10:27:46,693 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15343 Valid, 6174 Invalid, 1627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 1462 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-03-17 10:27:46,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4373 states. [2025-03-17 10:27:46,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4373 to 3518. [2025-03-17 10:27:46,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3518 states, 3467 states have (on average 1.3821747908854918) internal successors, (4792), 3473 states have internal predecessors, (4792), 47 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (47), 43 states have call predecessors, (47), 47 states have call successors, (47) [2025-03-17 10:27:46,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3518 states to 3518 states and 4886 transitions. [2025-03-17 10:27:46,769 INFO L78 Accepts]: Start accepts. Automaton has 3518 states and 4886 transitions. Word has length 656 [2025-03-17 10:27:46,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:27:46,770 INFO L471 AbstractCegarLoop]: Abstraction has 3518 states and 4886 transitions. [2025-03-17 10:27:46,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 110.57142857142857) internal successors, (1548), 14 states have internal predecessors, (1548), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2025-03-17 10:27:46,771 INFO L276 IsEmpty]: Start isEmpty. Operand 3518 states and 4886 transitions. [2025-03-17 10:27:46,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1519 [2025-03-17 10:27:46,807 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:27:46,807 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:27:46,821 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-17 10:27:47,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 10:27:47,009 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:27:47,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:27:47,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1508611480, now seen corresponding path program 1 times [2025-03-17 10:27:47,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:27:47,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750250408] [2025-03-17 10:27:47,011 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:27:47,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:27:47,373 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1518 statements into 1 equivalence classes.