./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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_1.5.800.v20200727-1323.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_SFH_test2-2.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 2a3326bc22943076798f4c55311213b2a5f9b1e03e68dc17c2ac5a3393252251 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 23:07:26,154 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 23:07:26,228 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 23:07:26,233 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 23:07:26,235 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 23:07:26,264 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 23:07:26,264 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 23:07:26,265 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 23:07:26,266 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 23:07:26,267 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 23:07:26,267 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 23:07:26,268 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 23:07:26,268 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 23:07:26,268 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 23:07:26,269 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 23:07:26,269 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 23:07:26,269 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 23:07:26,270 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 23:07:26,270 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 23:07:26,270 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 23:07:26,270 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 23:07:26,271 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 23:07:26,271 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 23:07:26,272 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 23:07:26,275 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 23:07:26,276 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 23:07:26,276 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 23:07:26,276 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 23:07:26,276 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 23:07:26,277 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 23:07:26,277 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 23:07:26,277 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 23:07:26,277 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 23:07:26,277 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 23:07:26,278 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 23:07:26,278 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 23:07:26,278 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 23:07:26,278 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 23:07:26,279 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 23:07:26,279 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 23:07:26,279 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 23:07:26,283 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 23:07:26,284 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a3326bc22943076798f4c55311213b2a5f9b1e03e68dc17c2ac5a3393252251 [2024-11-16 23:07:26,540 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 23:07:26,568 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 23:07:26,572 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 23:07:26,574 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 23:07:26,575 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 23:07:26,576 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i [2024-11-16 23:07:28,092 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 23:07:28,404 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 23:07:28,404 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i [2024-11-16 23:07:28,434 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23f441c15/b0c1fd146a5c47d2915532d8225d7f84/FLAG9d5d4b691 [2024-11-16 23:07:28,447 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23f441c15/b0c1fd146a5c47d2915532d8225d7f84 [2024-11-16 23:07:28,450 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 23:07:28,451 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 23:07:28,453 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 23:07:28,453 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 23:07:28,458 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 23:07:28,459 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:07:28" (1/1) ... [2024-11-16 23:07:28,460 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ac05bdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:07:28, skipping insertion in model container [2024-11-16 23:07:28,460 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:07:28" (1/1) ... [2024-11-16 23:07:28,516 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 23:07:28,971 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_SFH_test2-2.i[37019,37032] [2024-11-16 23:07:29,103 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_SFH_test2-2.i[47352,47365] [2024-11-16 23:07:29,119 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 23:07:29,133 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 23:07:29,170 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_SFH_test2-2.i[37019,37032] [2024-11-16 23:07:29,218 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_SFH_test2-2.i[47352,47365] [2024-11-16 23:07:29,227 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 23:07:29,303 INFO L204 MainTranslator]: Completed translation [2024-11-16 23:07:29,304 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:07:29 WrapperNode [2024-11-16 23:07:29,304 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 23:07:29,305 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 23:07:29,305 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 23:07:29,305 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 23:07:29,315 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:07:29" (1/1) ... [2024-11-16 23:07:29,366 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:07:29" (1/1) ... [2024-11-16 23:07:29,432 INFO L138 Inliner]: procedures = 208, calls = 278, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1433 [2024-11-16 23:07:29,433 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 23:07:29,433 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 23:07:29,434 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 23:07:29,434 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 23:07:29,455 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:07:29" (1/1) ... [2024-11-16 23:07:29,455 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:07:29" (1/1) ... [2024-11-16 23:07:29,475 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:07:29" (1/1) ... [2024-11-16 23:07:29,575 INFO L175 MemorySlicer]: Split 256 memory accesses to 3 slices as follows [2, 220, 34]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 54 writes are split as follows [0, 50, 4]. [2024-11-16 23:07:29,575 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:07:29" (1/1) ... [2024-11-16 23:07:29,576 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:07:29" (1/1) ... [2024-11-16 23:07:29,625 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:07:29" (1/1) ... [2024-11-16 23:07:29,627 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:07:29" (1/1) ... [2024-11-16 23:07:29,635 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:07:29" (1/1) ... [2024-11-16 23:07:29,645 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:07:29" (1/1) ... [2024-11-16 23:07:29,660 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 23:07:29,662 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 23:07:29,663 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 23:07:29,663 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 23:07:29,664 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:07:29" (1/1) ... [2024-11-16 23:07:29,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 23:07:29,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:07:29,700 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) [2024-11-16 23:07:29,712 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 [2024-11-16 23:07:29,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-16 23:07:29,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-16 23:07:29,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-16 23:07:29,758 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-16 23:07:29,759 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-16 23:07:29,759 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-16 23:07:29,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 23:07:29,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-16 23:07:29,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-16 23:07:29,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-16 23:07:29,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 23:07:29,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 23:07:29,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 23:07:29,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 23:07:29,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-16 23:07:29,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-16 23:07:29,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 23:07:29,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 23:07:29,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 23:07:29,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-16 23:07:29,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 23:07:29,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-16 23:07:29,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-16 23:07:29,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-16 23:07:29,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 23:07:29,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 23:07:29,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 23:07:29,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 23:07:29,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 23:07:29,994 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 23:07:29,996 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 23:07:31,401 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L812: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2024-11-16 23:07:31,510 INFO L? ?]: Removed 328 outVars from TransFormulas that were not future-live. [2024-11-16 23:07:31,510 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 23:07:31,608 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 23:07:31,609 INFO L336 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-16 23:07:31,611 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 11:07:31 BoogieIcfgContainer [2024-11-16 23:07:31,611 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 23:07:31,613 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 23:07:31,613 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 23:07:31,616 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 23:07:31,616 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:07:28" (1/3) ... [2024-11-16 23:07:31,617 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@520dedda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:07:31, skipping insertion in model container [2024-11-16 23:07:31,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:07:29" (2/3) ... [2024-11-16 23:07:31,617 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@520dedda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:07:31, skipping insertion in model container [2024-11-16 23:07:31,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 11:07:31" (3/3) ... [2024-11-16 23:07:31,619 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test2-2.i [2024-11-16 23:07:31,635 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 23:07:31,635 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-16 23:07:31,706 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 23:07:31,715 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;@132a40b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 23:07:31,715 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-16 23:07:31,722 INFO L276 IsEmpty]: Start isEmpty. Operand has 420 states, 407 states have (on average 1.6167076167076166) internal successors, (658), 414 states have internal predecessors, (658), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-16 23:07:31,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-16 23:07:31,731 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:07:31,732 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:07:31,732 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:07:31,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:07:31,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1646035752, now seen corresponding path program 1 times [2024-11-16 23:07:31,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:07:31,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052236932] [2024-11-16 23:07:31,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:07:31,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:07:31,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:07:31,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:07:31,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:07:31,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052236932] [2024-11-16 23:07:31,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052236932] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:07:31,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:07:31,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 23:07:31,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296883293] [2024-11-16 23:07:31,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:07:31,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 23:07:31,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:07:31,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 23:07:31,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 23:07:31,962 INFO L87 Difference]: Start difference. First operand has 420 states, 407 states have (on average 1.6167076167076166) internal successors, (658), 414 states have internal predecessors, (658), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:07:32,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:07:32,122 INFO L93 Difference]: Finished difference Result 838 states and 1351 transitions. [2024-11-16 23:07:32,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 23:07:32,125 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-16 23:07:32,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:07:32,143 INFO L225 Difference]: With dead ends: 838 [2024-11-16 23:07:32,145 INFO L226 Difference]: Without dead ends: 381 [2024-11-16 23:07:32,154 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 23:07:32,158 INFO L432 NwaCegarLoop]: 563 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 23:07:32,161 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 563 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 23:07:32,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2024-11-16 23:07:32,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2024-11-16 23:07:32,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 369 states have (on average 1.4552845528455285) internal successors, (537), 375 states have internal predecessors, (537), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-16 23:07:32,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 553 transitions. [2024-11-16 23:07:32,228 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 553 transitions. Word has length 9 [2024-11-16 23:07:32,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:07:32,229 INFO L471 AbstractCegarLoop]: Abstraction has 381 states and 553 transitions. [2024-11-16 23:07:32,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:07:32,231 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 553 transitions. [2024-11-16 23:07:32,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-16 23:07:32,234 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:07:32,234 INFO L215 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] [2024-11-16 23:07:32,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 23:07:32,235 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:07:32,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:07:32,235 INFO L85 PathProgramCache]: Analyzing trace with hash -891390850, now seen corresponding path program 1 times [2024-11-16 23:07:32,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:07:32,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824810212] [2024-11-16 23:07:32,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:07:32,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:07:32,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:07:32,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:07:32,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:07:32,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824810212] [2024-11-16 23:07:32,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824810212] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:07:32,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:07:32,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 23:07:32,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286074481] [2024-11-16 23:07:32,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:07:32,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 23:07:32,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:07:32,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 23:07:32,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 23:07:32,730 INFO L87 Difference]: Start difference. First operand 381 states and 553 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2024-11-16 23:07:33,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:07:33,091 INFO L93 Difference]: Finished difference Result 927 states and 1356 transitions. [2024-11-16 23:07:33,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 23:07:33,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 65 [2024-11-16 23:07:33,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:07:33,098 INFO L225 Difference]: With dead ends: 927 [2024-11-16 23:07:33,099 INFO L226 Difference]: Without dead ends: 749 [2024-11-16 23:07:33,104 INFO L431 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 [2024-11-16 23:07:33,106 INFO L432 NwaCegarLoop]: 535 mSDtfsCounter, 522 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 1552 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 23:07:33,107 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 1552 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 23:07:33,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2024-11-16 23:07:33,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 383. [2024-11-16 23:07:33,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 371 states have (on average 1.4528301886792452) internal successors, (539), 377 states have internal predecessors, (539), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-16 23:07:33,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 555 transitions. [2024-11-16 23:07:33,143 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 555 transitions. Word has length 65 [2024-11-16 23:07:33,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:07:33,143 INFO L471 AbstractCegarLoop]: Abstraction has 383 states and 555 transitions. [2024-11-16 23:07:33,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2024-11-16 23:07:33,144 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 555 transitions. [2024-11-16 23:07:33,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-16 23:07:33,150 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:07:33,150 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:07:33,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 23:07:33,151 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:07:33,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:07:33,151 INFO L85 PathProgramCache]: Analyzing trace with hash 2131048353, now seen corresponding path program 1 times [2024-11-16 23:07:33,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:07:33,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785880208] [2024-11-16 23:07:33,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:07:33,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:07:33,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:07:33,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:07:33,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:07:33,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785880208] [2024-11-16 23:07:33,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785880208] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:07:33,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:07:33,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 23:07:33,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647916026] [2024-11-16 23:07:33,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:07:33,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 23:07:33,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:07:33,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 23:07:33,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 23:07:33,613 INFO L87 Difference]: Start difference. First operand 383 states and 555 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 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) [2024-11-16 23:07:33,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:07:33,794 INFO L93 Difference]: Finished difference Result 720 states and 1040 transitions. [2024-11-16 23:07:33,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 23:07:33,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 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 142 [2024-11-16 23:07:33,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:07:33,798 INFO L225 Difference]: With dead ends: 720 [2024-11-16 23:07:33,798 INFO L226 Difference]: Without dead ends: 341 [2024-11-16 23:07:33,801 INFO L431 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 [2024-11-16 23:07:33,806 INFO L432 NwaCegarLoop]: 419 mSDtfsCounter, 30 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1237 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 23:07:33,807 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1237 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 23:07:33,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2024-11-16 23:07:33,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2024-11-16 23:07:33,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 329 states have (on average 1.4042553191489362) internal successors, (462), 335 states have internal predecessors, (462), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-16 23:07:33,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 478 transitions. [2024-11-16 23:07:33,843 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 478 transitions. Word has length 142 [2024-11-16 23:07:33,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:07:33,844 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 478 transitions. [2024-11-16 23:07:33,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 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) [2024-11-16 23:07:33,844 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 478 transitions. [2024-11-16 23:07:33,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-16 23:07:33,848 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:07:33,848 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:07:33,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 23:07:33,849 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:07:33,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:07:33,853 INFO L85 PathProgramCache]: Analyzing trace with hash -57827526, now seen corresponding path program 1 times [2024-11-16 23:07:33,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:07:33,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998609135] [2024-11-16 23:07:33,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:07:33,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:07:33,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:07:34,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:07:34,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:07:34,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998609135] [2024-11-16 23:07:34,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998609135] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:07:34,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:07:34,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 23:07:34,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875176137] [2024-11-16 23:07:34,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:07:34,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 23:07:34,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:07:34,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 23:07:34,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 23:07:34,073 INFO L87 Difference]: Start difference. First operand 341 states and 478 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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) [2024-11-16 23:07:34,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:07:34,224 INFO L93 Difference]: Finished difference Result 915 states and 1298 transitions. [2024-11-16 23:07:34,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 23:07:34,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 142 [2024-11-16 23:07:34,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:07:34,229 INFO L225 Difference]: With dead ends: 915 [2024-11-16 23:07:34,229 INFO L226 Difference]: Without dead ends: 578 [2024-11-16 23:07:34,231 INFO L431 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 [2024-11-16 23:07:34,232 INFO L432 NwaCegarLoop]: 617 mSDtfsCounter, 272 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 23:07:34,232 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 1041 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 23:07:34,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2024-11-16 23:07:34,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 576. [2024-11-16 23:07:34,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 559 states have (on average 1.4221824686940967) internal successors, (795), 570 states have internal predecessors, (795), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-16 23:07:34,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 821 transitions. [2024-11-16 23:07:34,256 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 821 transitions. Word has length 142 [2024-11-16 23:07:34,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:07:34,256 INFO L471 AbstractCegarLoop]: Abstraction has 576 states and 821 transitions. [2024-11-16 23:07:34,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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) [2024-11-16 23:07:34,257 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 821 transitions. [2024-11-16 23:07:34,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-16 23:07:34,261 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:07:34,261 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:07:34,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 23:07:34,261 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:07:34,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:07:34,262 INFO L85 PathProgramCache]: Analyzing trace with hash 472810895, now seen corresponding path program 1 times [2024-11-16 23:07:34,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:07:34,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662410772] [2024-11-16 23:07:34,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:07:34,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:07:34,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:07:34,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-16 23:07:34,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:07:34,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-16 23:07:34,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:07:34,637 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 23:07:34,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:07:34,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662410772] [2024-11-16 23:07:34,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662410772] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:07:34,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:07:34,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 23:07:34,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476331772] [2024-11-16 23:07:34,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:07:34,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 23:07:34,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:07:34,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 23:07:34,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 23:07:34,644 INFO L87 Difference]: Start difference. First operand 576 states and 821 transitions. Second operand has 5 states, 5 states have (on average 29.8) internal successors, (149), 4 states have internal predecessors, (149), 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) [2024-11-16 23:07:35,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:07:35,030 INFO L93 Difference]: Finished difference Result 819 states and 1180 transitions. [2024-11-16 23:07:35,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 23:07:35,031 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 4 states have internal predecessors, (149), 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 157 [2024-11-16 23:07:35,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:07:35,036 INFO L225 Difference]: With dead ends: 819 [2024-11-16 23:07:35,036 INFO L226 Difference]: Without dead ends: 495 [2024-11-16 23:07:35,038 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 23:07:35,038 INFO L432 NwaCegarLoop]: 338 mSDtfsCounter, 38 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1259 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 23:07:35,039 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 1259 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 23:07:35,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2024-11-16 23:07:35,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 492. [2024-11-16 23:07:35,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 475 states have (on average 1.3494736842105264) internal successors, (641), 486 states have internal predecessors, (641), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-16 23:07:35,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 667 transitions. [2024-11-16 23:07:35,062 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 667 transitions. Word has length 157 [2024-11-16 23:07:35,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:07:35,063 INFO L471 AbstractCegarLoop]: Abstraction has 492 states and 667 transitions. [2024-11-16 23:07:35,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 4 states have internal predecessors, (149), 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) [2024-11-16 23:07:35,063 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 667 transitions. [2024-11-16 23:07:35,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-16 23:07:35,065 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:07:35,068 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:07:35,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 23:07:35,069 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:07:35,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:07:35,070 INFO L85 PathProgramCache]: Analyzing trace with hash -661470009, now seen corresponding path program 1 times [2024-11-16 23:07:35,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:07:35,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964746466] [2024-11-16 23:07:35,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:07:35,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:07:35,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:07:35,383 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-16 23:07:35,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:07:35,391 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-16 23:07:35,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:07:35,398 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 23:07:35,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:07:35,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964746466] [2024-11-16 23:07:35,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964746466] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:07:35,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:07:35,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 23:07:35,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510676419] [2024-11-16 23:07:35,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:07:35,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 23:07:35,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:07:35,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 23:07:35,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 23:07:35,402 INFO L87 Difference]: Start difference. First operand 492 states and 667 transitions. Second operand has 5 states, 5 states have (on average 30.0) internal successors, (150), 4 states have internal predecessors, (150), 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) [2024-11-16 23:07:35,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:07:35,840 INFO L93 Difference]: Finished difference Result 790 states and 1070 transitions. [2024-11-16 23:07:35,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 23:07:35,840 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 4 states have internal predecessors, (150), 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 157 [2024-11-16 23:07:35,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:07:35,843 INFO L225 Difference]: With dead ends: 790 [2024-11-16 23:07:35,843 INFO L226 Difference]: Without dead ends: 390 [2024-11-16 23:07:35,844 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 23:07:35,845 INFO L432 NwaCegarLoop]: 421 mSDtfsCounter, 581 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 23:07:35,845 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [581 Valid, 937 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 23:07:35,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2024-11-16 23:07:35,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 387. [2024-11-16 23:07:35,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 375 states have (on average 1.3386666666666667) internal successors, (502), 381 states have internal predecessors, (502), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-16 23:07:35,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 518 transitions. [2024-11-16 23:07:35,858 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 518 transitions. Word has length 157 [2024-11-16 23:07:35,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:07:35,859 INFO L471 AbstractCegarLoop]: Abstraction has 387 states and 518 transitions. [2024-11-16 23:07:35,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 4 states have internal predecessors, (150), 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) [2024-11-16 23:07:35,859 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 518 transitions. [2024-11-16 23:07:35,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-16 23:07:35,861 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:07:35,861 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:07:35,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 23:07:35,862 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:07:35,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:07:35,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1075705569, now seen corresponding path program 1 times [2024-11-16 23:07:35,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:07:35,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077466226] [2024-11-16 23:07:35,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:07:35,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:07:35,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:07:36,120 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-16 23:07:36,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:07:36,124 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-16 23:07:36,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:07:36,128 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 23:07:36,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:07:36,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077466226] [2024-11-16 23:07:36,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077466226] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:07:36,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:07:36,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 23:07:36,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533316876] [2024-11-16 23:07:36,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:07:36,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 23:07:36,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:07:36,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 23:07:36,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 23:07:36,131 INFO L87 Difference]: Start difference. First operand 387 states and 518 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 3 states have internal predecessors, (160), 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) [2024-11-16 23:07:36,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:07:36,466 INFO L93 Difference]: Finished difference Result 525 states and 707 transitions. [2024-11-16 23:07:36,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 23:07:36,467 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 3 states have internal predecessors, (160), 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 168 [2024-11-16 23:07:36,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:07:36,469 INFO L225 Difference]: With dead ends: 525 [2024-11-16 23:07:36,469 INFO L226 Difference]: Without dead ends: 390 [2024-11-16 23:07:36,469 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 23:07:36,472 INFO L432 NwaCegarLoop]: 351 mSDtfsCounter, 9 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 23:07:36,472 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 962 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 23:07:36,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2024-11-16 23:07:36,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 387. [2024-11-16 23:07:36,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 375 states have (on average 1.3306666666666667) internal successors, (499), 381 states have internal predecessors, (499), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-16 23:07:36,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 515 transitions. [2024-11-16 23:07:36,486 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 515 transitions. Word has length 168 [2024-11-16 23:07:36,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:07:36,487 INFO L471 AbstractCegarLoop]: Abstraction has 387 states and 515 transitions. [2024-11-16 23:07:36,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 3 states have internal predecessors, (160), 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) [2024-11-16 23:07:36,487 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 515 transitions. [2024-11-16 23:07:36,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-16 23:07:36,490 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:07:36,490 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:07:36,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 23:07:36,490 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:07:36,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:07:36,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1073731549, now seen corresponding path program 1 times [2024-11-16 23:07:36,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:07:36,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336479741] [2024-11-16 23:07:36,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:07:36,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:07:36,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:07:37,274 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-16 23:07:37,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:07:37,279 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-16 23:07:37,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:07:37,285 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 23:07:37,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:07:37,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336479741] [2024-11-16 23:07:37,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336479741] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:07:37,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831016487] [2024-11-16 23:07:37,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:07:37,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:07:37,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:07:37,289 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) [2024-11-16 23:07:37,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 23:07:37,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:07:37,691 INFO L255 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 23:07:37,703 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:07:37,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 23:07:37,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 23:07:37,989 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 23:07:37,989 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 23:07:38,187 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 23:07:38,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831016487] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 23:07:38,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 23:07:38,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 5] total 13 [2024-11-16 23:07:38,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459510057] [2024-11-16 23:07:38,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 23:07:38,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 23:07:38,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:07:38,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 23:07:38,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-16 23:07:38,190 INFO L87 Difference]: Start difference. First operand 387 states and 515 transitions. Second operand has 13 states, 13 states have (on average 25.615384615384617) internal successors, (333), 12 states have internal predecessors, (333), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-16 23:07:39,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:07:39,122 INFO L93 Difference]: Finished difference Result 1289 states and 1728 transitions. [2024-11-16 23:07:39,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 23:07:39,123 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 25.615384615384617) internal successors, (333), 12 states have internal predecessors, (333), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 168 [2024-11-16 23:07:39,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:07:39,128 INFO L225 Difference]: With dead ends: 1289 [2024-11-16 23:07:39,128 INFO L226 Difference]: Without dead ends: 1153 [2024-11-16 23:07:39,129 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 332 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2024-11-16 23:07:39,129 INFO L432 NwaCegarLoop]: 507 mSDtfsCounter, 2012 mSDsluCounter, 3552 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2030 SdHoareTripleChecker+Valid, 4059 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 23:07:39,130 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2030 Valid, 4059 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 23:07:39,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2024-11-16 23:07:39,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 739. [2024-11-16 23:07:39,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 739 states, 723 states have (on average 1.3291839557399723) internal successors, (961), 729 states have internal predecessors, (961), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-16 23:07:39,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 983 transitions. [2024-11-16 23:07:39,159 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 983 transitions. Word has length 168 [2024-11-16 23:07:39,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:07:39,160 INFO L471 AbstractCegarLoop]: Abstraction has 739 states and 983 transitions. [2024-11-16 23:07:39,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 25.615384615384617) internal successors, (333), 12 states have internal predecessors, (333), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-16 23:07:39,160 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 983 transitions. [2024-11-16 23:07:39,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2024-11-16 23:07:39,165 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:07:39,165 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:07:39,185 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 23:07:39,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:07:39,367 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:07:39,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:07:39,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1917978205, now seen corresponding path program 1 times [2024-11-16 23:07:39,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:07:39,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095458587] [2024-11-16 23:07:39,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:07:39,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:07:39,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:07:43,078 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-16 23:07:43,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:07:43,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-16 23:07:43,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:07:43,090 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 464 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 23:07:43,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:07:43,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095458587] [2024-11-16 23:07:43,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095458587] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:07:43,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856140912] [2024-11-16 23:07:43,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:07:43,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:07:43,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:07:43,094 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) [2024-11-16 23:07:43,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 23:07:43,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:07:43,858 INFO L255 TraceCheckSpWp]: Trace formula consists of 1904 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-16 23:07:43,877 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:07:43,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 23:07:44,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 23:07:44,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 23:07:44,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 23:07:44,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-16 23:07:44,565 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 464 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 23:07:44,565 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 23:07:45,129 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 464 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 23:07:45,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856140912] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 23:07:45,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 23:07:45,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 8] total 24 [2024-11-16 23:07:45,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295145038] [2024-11-16 23:07:45,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 23:07:45,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-16 23:07:45,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:07:45,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-16 23:07:45,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=383, Unknown=0, NotChecked=0, Total=552 [2024-11-16 23:07:45,135 INFO L87 Difference]: Start difference. First operand 739 states and 983 transitions. Second operand has 24 states, 24 states have (on average 42.75) internal successors, (1026), 23 states have internal predecessors, (1026), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-16 23:07:47,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:07:47,437 INFO L93 Difference]: Finished difference Result 2552 states and 3432 transitions. [2024-11-16 23:07:47,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-16 23:07:47,438 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 42.75) internal successors, (1026), 23 states have internal predecessors, (1026), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 399 [2024-11-16 23:07:47,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:07:47,449 INFO L225 Difference]: With dead ends: 2552 [2024-11-16 23:07:47,449 INFO L226 Difference]: Without dead ends: 2416 [2024-11-16 23:07:47,450 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 825 GetRequests, 790 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=302, Invalid=820, Unknown=0, NotChecked=0, Total=1122 [2024-11-16 23:07:47,452 INFO L432 NwaCegarLoop]: 1333 mSDtfsCounter, 5247 mSDsluCounter, 10529 mSDsCounter, 0 mSdLazyCounter, 1732 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5292 SdHoareTripleChecker+Valid, 11862 SdHoareTripleChecker+Invalid, 1847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-16 23:07:47,452 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5292 Valid, 11862 Invalid, 1847 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [115 Valid, 1732 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-16 23:07:47,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2416 states. [2024-11-16 23:07:47,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2416 to 1615. [2024-11-16 23:07:47,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1615 states, 1593 states have (on average 1.330194601381042) internal successors, (2119), 1599 states have internal predecessors, (2119), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (17), 13 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-16 23:07:47,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 2153 transitions. [2024-11-16 23:07:47,511 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 2153 transitions. Word has length 399 [2024-11-16 23:07:47,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:07:47,511 INFO L471 AbstractCegarLoop]: Abstraction has 1615 states and 2153 transitions. [2024-11-16 23:07:47,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 42.75) internal successors, (1026), 23 states have internal predecessors, (1026), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-16 23:07:47,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 2153 transitions. [2024-11-16 23:07:47,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 862 [2024-11-16 23:07:47,531 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:07:47,531 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:07:47,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-16 23:07:47,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-16 23:07:47,732 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:07:47,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:07:47,733 INFO L85 PathProgramCache]: Analyzing trace with hash 418567267, now seen corresponding path program 2 times [2024-11-16 23:07:47,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:07:47,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429489966] [2024-11-16 23:07:47,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:07:47,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms