./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test3-1.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_OAT_nondet_test3-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6fd297418200393a9bb890e84311a80b6eacd7d5d7cdd65efb1397f8b8ab870f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 22:59:25,106 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 22:59:25,174 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 22:59:25,179 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 22:59:25,180 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 22:59:25,217 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 22:59:25,218 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 22:59:25,218 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 22:59:25,219 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 22:59:25,220 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 22:59:25,221 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 22:59:25,221 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 22:59:25,222 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 22:59:25,224 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 22:59:25,224 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 22:59:25,224 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 22:59:25,225 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 22:59:25,225 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 22:59:25,225 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 22:59:25,226 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 22:59:25,226 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 22:59:25,230 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 22:59:25,230 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 22:59:25,230 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 22:59:25,231 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 22:59:25,231 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 22:59:25,231 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 22:59:25,231 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 22:59:25,232 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 22:59:25,232 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 22:59:25,233 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 22:59:25,233 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 22:59:25,233 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 22:59:25,233 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 22:59:25,234 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 22:59:25,234 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 22:59:25,234 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 22:59:25,234 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 22:59:25,234 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 22:59:25,235 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 22:59:25,235 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 22:59:25,236 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 22:59:25,237 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6fd297418200393a9bb890e84311a80b6eacd7d5d7cdd65efb1397f8b8ab870f [2024-11-16 22:59:25,473 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 22:59:25,499 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 22:59:25,503 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 22:59:25,504 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 22:59:25,505 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 22:59:25,506 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test3-1.i [2024-11-16 22:59:26,903 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 22:59:27,256 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 22:59:27,258 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test3-1.i [2024-11-16 22:59:27,283 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de984d25e/ef298cfad9e7499485e90bbcb04c4306/FLAG921d12583 [2024-11-16 22:59:27,300 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de984d25e/ef298cfad9e7499485e90bbcb04c4306 [2024-11-16 22:59:27,302 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 22:59:27,304 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 22:59:27,305 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 22:59:27,307 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 22:59:27,312 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 22:59:27,313 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:59:27" (1/1) ... [2024-11-16 22:59:27,314 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@515a9e85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:27, skipping insertion in model container [2024-11-16 22:59:27,314 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:59:27" (1/1) ... [2024-11-16 22:59:27,372 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 22:59:27,758 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_OAT_nondet_test3-1.i[33519,33532] [2024-11-16 22:59:27,942 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 22:59:27,953 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 22:59:28,011 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_OAT_nondet_test3-1.i[33519,33532] [2024-11-16 22:59:28,083 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 22:59:28,120 INFO L204 MainTranslator]: Completed translation [2024-11-16 22:59:28,120 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:28 WrapperNode [2024-11-16 22:59:28,120 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 22:59:28,121 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 22:59:28,122 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 22:59:28,122 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 22:59:28,127 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:28" (1/1) ... [2024-11-16 22:59:28,155 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:28" (1/1) ... [2024-11-16 22:59:28,219 INFO L138 Inliner]: procedures = 177, calls = 273, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1396 [2024-11-16 22:59:28,220 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 22:59:28,221 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 22:59:28,221 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 22:59:28,221 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 22:59:28,231 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:28" (1/1) ... [2024-11-16 22:59:28,235 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:28" (1/1) ... [2024-11-16 22:59:28,252 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:28" (1/1) ... [2024-11-16 22:59:28,332 INFO L175 MemorySlicer]: Split 254 memory accesses to 3 slices as follows [2, 34, 218]. 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, 4, 50]. [2024-11-16 22:59:28,332 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:28" (1/1) ... [2024-11-16 22:59:28,333 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:28" (1/1) ... [2024-11-16 22:59:28,364 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:28" (1/1) ... [2024-11-16 22:59:28,370 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:28" (1/1) ... [2024-11-16 22:59:28,379 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:28" (1/1) ... [2024-11-16 22:59:28,389 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:28" (1/1) ... [2024-11-16 22:59:28,404 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 22:59:28,405 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 22:59:28,406 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 22:59:28,406 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 22:59:28,407 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:28" (1/1) ... [2024-11-16 22:59:28,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 22:59:28,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 22:59:28,440 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 22:59:28,448 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 22:59:28,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 22:59:28,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 22:59:28,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 22:59:28,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-16 22:59:28,496 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-16 22:59:28,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 22:59:28,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 22:59:28,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 22:59:28,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-16 22:59:28,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-16 22:59:28,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-16 22:59:28,498 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-16 22:59:28,498 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-16 22:59:28,498 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-16 22:59:28,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-16 22:59:28,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 22:59:28,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-16 22:59:28,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-16 22:59:28,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-16 22:59:28,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 22:59:28,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-16 22:59:28,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-16 22:59:28,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-16 22:59:28,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 22:59:28,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 22:59:28,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 22:59:28,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 22:59:28,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 22:59:28,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 22:59:28,753 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 22:59:28,755 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 22:59:30,158 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L734: 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 22:59:30,265 INFO L? ?]: Removed 313 outVars from TransFormulas that were not future-live. [2024-11-16 22:59:30,266 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 22:59:30,334 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 22:59:30,337 INFO L336 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-16 22:59:30,338 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 10:59:30 BoogieIcfgContainer [2024-11-16 22:59:30,338 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 22:59:30,341 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 22:59:30,341 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 22:59:30,344 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 22:59:30,345 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 10:59:27" (1/3) ... [2024-11-16 22:59:30,345 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71ff1b14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:59:30, skipping insertion in model container [2024-11-16 22:59:30,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:28" (2/3) ... [2024-11-16 22:59:30,346 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71ff1b14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:59:30, skipping insertion in model container [2024-11-16 22:59:30,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 10:59:30" (3/3) ... [2024-11-16 22:59:30,348 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_nondet_test3-1.i [2024-11-16 22:59:30,365 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 22:59:30,365 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 22:59:30,442 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 22:59:30,448 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;@3e248a73, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 22:59:30,449 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 22:59:30,454 INFO L276 IsEmpty]: Start isEmpty. Operand has 406 states, 397 states have (on average 1.614609571788413) internal successors, (641), 399 states have internal predecessors, (641), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-16 22:59:30,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-16 22:59:30,462 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:59:30,463 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:59:30,463 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:59:30,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:59:30,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1926511281, now seen corresponding path program 1 times [2024-11-16 22:59:30,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:59:30,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455909058] [2024-11-16 22:59:30,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:59:30,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:59:30,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:30,652 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 22:59:30,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:59:30,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455909058] [2024-11-16 22:59:30,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455909058] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:59:30,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:59:30,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 22:59:30,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146265779] [2024-11-16 22:59:30,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:59:30,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 22:59:30,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:59:30,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 22:59:30,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 22:59:30,692 INFO L87 Difference]: Start difference. First operand has 406 states, 397 states have (on average 1.614609571788413) internal successors, (641), 399 states have internal predecessors, (641), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 22:59:30,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:59:30,836 INFO L93 Difference]: Finished difference Result 809 states and 1300 transitions. [2024-11-16 22:59:30,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 22:59:30,839 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-16 22:59:30,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:59:30,850 INFO L225 Difference]: With dead ends: 809 [2024-11-16 22:59:30,851 INFO L226 Difference]: Without dead ends: 402 [2024-11-16 22:59:30,856 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 22:59:30,862 INFO L432 NwaCegarLoop]: 541 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, 541 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 22:59:30,863 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 541 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 22:59:30,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2024-11-16 22:59:30,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 402. [2024-11-16 22:59:30,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 394 states have (on average 1.4416243654822336) internal successors, (568), 395 states have internal predecessors, (568), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-16 22:59:30,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 578 transitions. [2024-11-16 22:59:30,923 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 578 transitions. Word has length 13 [2024-11-16 22:59:30,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:59:30,923 INFO L471 AbstractCegarLoop]: Abstraction has 402 states and 578 transitions. [2024-11-16 22:59:30,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 22:59:30,924 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 578 transitions. [2024-11-16 22:59:30,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-16 22:59:30,924 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:59:30,925 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:59:30,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 22:59:30,925 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:59:30,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:59:30,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1710365554, now seen corresponding path program 1 times [2024-11-16 22:59:30,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:59:30,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523755761] [2024-11-16 22:59:30,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:59:30,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:59:30,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:31,207 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 22:59:31,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:59:31,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523755761] [2024-11-16 22:59:31,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523755761] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:59:31,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:59:31,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 22:59:31,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975771955] [2024-11-16 22:59:31,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:59:31,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 22:59:31,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:59:31,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 22:59:31,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 22:59:31,211 INFO L87 Difference]: Start difference. First operand 402 states and 578 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 22:59:31,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:59:31,609 INFO L93 Difference]: Finished difference Result 1100 states and 1600 transitions. [2024-11-16 22:59:31,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 22:59:31,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-16 22:59:31,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:59:31,618 INFO L225 Difference]: With dead ends: 1100 [2024-11-16 22:59:31,618 INFO L226 Difference]: Without dead ends: 698 [2024-11-16 22:59:31,620 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 22:59:31,625 INFO L432 NwaCegarLoop]: 525 mSDtfsCounter, 432 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 1528 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 22:59:31,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 1528 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 22:59:31,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2024-11-16 22:59:31,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 697. [2024-11-16 22:59:31,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 688 states have (on average 1.4622093023255813) internal successors, (1006), 690 states have internal predecessors, (1006), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-16 22:59:31,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1018 transitions. [2024-11-16 22:59:31,678 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1018 transitions. Word has length 15 [2024-11-16 22:59:31,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:59:31,678 INFO L471 AbstractCegarLoop]: Abstraction has 697 states and 1018 transitions. [2024-11-16 22:59:31,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 22:59:31,679 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1018 transitions. [2024-11-16 22:59:31,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-16 22:59:31,682 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:59:31,682 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, 1, 1, 1, 1] [2024-11-16 22:59:31,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 22:59:31,683 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:59:31,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:59:31,683 INFO L85 PathProgramCache]: Analyzing trace with hash -490498584, now seen corresponding path program 1 times [2024-11-16 22:59:31,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:59:31,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222363836] [2024-11-16 22:59:31,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:59:31,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:59:31,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:31,955 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 22:59:31,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:59:31,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222363836] [2024-11-16 22:59:31,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222363836] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:59:31,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:59:31,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 22:59:31,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489368388] [2024-11-16 22:59:31,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:59:31,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 22:59:31,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:59:31,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 22:59:31,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 22:59:31,958 INFO L87 Difference]: Start difference. First operand 697 states and 1018 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 22:59:32,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:59:32,149 INFO L93 Difference]: Finished difference Result 972 states and 1411 transitions. [2024-11-16 22:59:32,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 22:59:32,150 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-16 22:59:32,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:59:32,155 INFO L225 Difference]: With dead ends: 972 [2024-11-16 22:59:32,155 INFO L226 Difference]: Without dead ends: 613 [2024-11-16 22:59:32,157 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 22:59:32,158 INFO L432 NwaCegarLoop]: 443 mSDtfsCounter, 30 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 22:59:32,160 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1309 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 22:59:32,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2024-11-16 22:59:32,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 613. [2024-11-16 22:59:32,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 604 states have (on average 1.4105960264900663) internal successors, (852), 606 states have internal predecessors, (852), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-16 22:59:32,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 864 transitions. [2024-11-16 22:59:32,184 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 864 transitions. Word has length 69 [2024-11-16 22:59:32,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:59:32,184 INFO L471 AbstractCegarLoop]: Abstraction has 613 states and 864 transitions. [2024-11-16 22:59:32,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 22:59:32,185 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 864 transitions. [2024-11-16 22:59:32,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-16 22:59:32,192 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:59:32,192 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, 1, 1, 1, 1] [2024-11-16 22:59:32,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 22:59:32,193 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:59:32,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:59:32,193 INFO L85 PathProgramCache]: Analyzing trace with hash -775705617, now seen corresponding path program 1 times [2024-11-16 22:59:32,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:59:32,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659522274] [2024-11-16 22:59:32,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:59:32,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:59:32,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:32,640 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 22:59:32,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:59:32,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659522274] [2024-11-16 22:59:32,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659522274] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:59:32,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:59:32,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 22:59:32,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232959128] [2024-11-16 22:59:32,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:59:32,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 22:59:32,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:59:32,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 22:59:32,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-16 22:59:32,645 INFO L87 Difference]: Start difference. First operand 613 states and 864 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 22:59:32,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:59:32,918 INFO L93 Difference]: Finished difference Result 1134 states and 1567 transitions. [2024-11-16 22:59:32,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 22:59:32,919 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-16 22:59:32,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:59:32,923 INFO L225 Difference]: With dead ends: 1134 [2024-11-16 22:59:32,923 INFO L226 Difference]: Without dead ends: 856 [2024-11-16 22:59:32,924 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-16 22:59:32,928 INFO L432 NwaCegarLoop]: 490 mSDtfsCounter, 469 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 1910 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 22:59:32,928 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 1910 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 22:59:32,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2024-11-16 22:59:32,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 612. [2024-11-16 22:59:32,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 603 states have (on average 1.4096185737976783) internal successors, (850), 605 states have internal predecessors, (850), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-16 22:59:32,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 862 transitions. [2024-11-16 22:59:32,952 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 862 transitions. Word has length 69 [2024-11-16 22:59:32,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:59:32,952 INFO L471 AbstractCegarLoop]: Abstraction has 612 states and 862 transitions. [2024-11-16 22:59:32,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 22:59:32,953 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 862 transitions. [2024-11-16 22:59:32,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-16 22:59:32,955 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:59:32,956 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] [2024-11-16 22:59:32,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 22:59:32,956 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:59:32,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:59:32,957 INFO L85 PathProgramCache]: Analyzing trace with hash 810466791, now seen corresponding path program 1 times [2024-11-16 22:59:32,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:59:32,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263216797] [2024-11-16 22:59:32,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:59:32,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:59:33,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:33,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-16 22:59:33,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:33,222 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-16 22:59:33,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:33,229 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 22:59:33,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:59:33,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263216797] [2024-11-16 22:59:33,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263216797] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:59:33,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:59:33,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 22:59:33,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930019356] [2024-11-16 22:59:33,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:59:33,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 22:59:33,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:59:33,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 22:59:33,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 22:59:33,236 INFO L87 Difference]: Start difference. First operand 612 states and 862 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:59:33,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:59:33,660 INFO L93 Difference]: Finished difference Result 1171 states and 1645 transitions. [2024-11-16 22:59:33,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 22:59:33,661 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 107 [2024-11-16 22:59:33,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:59:33,665 INFO L225 Difference]: With dead ends: 1171 [2024-11-16 22:59:33,665 INFO L226 Difference]: Without dead ends: 621 [2024-11-16 22:59:33,666 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 22:59:33,667 INFO L432 NwaCegarLoop]: 428 mSDtfsCounter, 110 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 22:59:33,668 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 1612 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 22:59:33,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2024-11-16 22:59:33,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 612. [2024-11-16 22:59:33,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 603 states have (on average 1.386401326699834) internal successors, (836), 605 states have internal predecessors, (836), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-16 22:59:33,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 848 transitions. [2024-11-16 22:59:33,685 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 848 transitions. Word has length 107 [2024-11-16 22:59:33,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:59:33,685 INFO L471 AbstractCegarLoop]: Abstraction has 612 states and 848 transitions. [2024-11-16 22:59:33,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:59:33,686 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 848 transitions. [2024-11-16 22:59:33,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-16 22:59:33,687 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:59:33,687 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] [2024-11-16 22:59:33,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 22:59:33,688 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:59:33,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:59:33,688 INFO L85 PathProgramCache]: Analyzing trace with hash -2045556127, now seen corresponding path program 1 times [2024-11-16 22:59:33,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:59:33,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258459181] [2024-11-16 22:59:33,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:59:33,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:59:34,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:34,234 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-16 22:59:34,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:34,269 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-16 22:59:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:34,274 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-16 22:59:34,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:59:34,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258459181] [2024-11-16 22:59:34,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258459181] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 22:59:34,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377422276] [2024-11-16 22:59:34,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:59:34,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:59:34,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 22:59:34,277 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 22:59:34,292 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 22:59:34,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:34,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-16 22:59:34,629 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 22:59:34,668 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 22:59:34,695 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 16 treesize of output 17 [2024-11-16 22:59:35,692 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 22:59:35,693 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 22:59:35,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377422276] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:59:35,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 22:59:35,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 14 [2024-11-16 22:59:35,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806096351] [2024-11-16 22:59:35,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:59:35,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 22:59:35,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:59:35,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 22:59:35,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-11-16 22:59:35,696 INFO L87 Difference]: Start difference. First operand 612 states and 848 transitions. Second operand has 11 states, 11 states have (on average 9.0) internal successors, (99), 11 states have internal predecessors, (99), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:59:37,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:59:37,316 INFO L93 Difference]: Finished difference Result 1430 states and 1967 transitions. [2024-11-16 22:59:37,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 22:59:37,317 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.0) internal successors, (99), 11 states have internal predecessors, (99), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 107 [2024-11-16 22:59:37,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:59:37,321 INFO L225 Difference]: With dead ends: 1430 [2024-11-16 22:59:37,321 INFO L226 Difference]: Without dead ends: 906 [2024-11-16 22:59:37,323 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2024-11-16 22:59:37,323 INFO L432 NwaCegarLoop]: 486 mSDtfsCounter, 742 mSDsluCounter, 1912 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 2398 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-16 22:59:37,324 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 2398 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-16 22:59:37,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2024-11-16 22:59:37,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 639. [2024-11-16 22:59:37,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 630 states have (on average 1.3777777777777778) internal successors, (868), 632 states have internal predecessors, (868), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-16 22:59:37,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 880 transitions. [2024-11-16 22:59:37,345 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 880 transitions. Word has length 107 [2024-11-16 22:59:37,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:59:37,345 INFO L471 AbstractCegarLoop]: Abstraction has 639 states and 880 transitions. [2024-11-16 22:59:37,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.0) internal successors, (99), 11 states have internal predecessors, (99), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:59:37,346 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 880 transitions. [2024-11-16 22:59:37,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-16 22:59:37,347 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:59:37,347 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] [2024-11-16 22:59:37,367 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 22:59:37,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-16 22:59:37,549 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:59:37,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:59:37,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1988400081, now seen corresponding path program 1 times [2024-11-16 22:59:37,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:59:37,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455618456] [2024-11-16 22:59:37,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:59:37,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:59:37,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:38,025 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-16 22:59:38,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:38,056 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-16 22:59:38,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:38,060 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-16 22:59:38,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:59:38,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455618456] [2024-11-16 22:59:38,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455618456] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 22:59:38,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113763455] [2024-11-16 22:59:38,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:59:38,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:59:38,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 22:59:38,063 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 22:59:38,064 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 22:59:38,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:38,398 INFO L255 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-16 22:59:38,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 22:59:38,412 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 22:59:38,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2024-11-16 22:59:38,657 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 22:59:38,695 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 22:59:38,695 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 22:59:38,956 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 22:59:38,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113763455] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 22:59:38,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 22:59:38,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 7] total 12 [2024-11-16 22:59:38,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085075358] [2024-11-16 22:59:38,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:59:38,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 22:59:38,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:59:38,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 22:59:38,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-16 22:59:38,959 INFO L87 Difference]: Start difference. First operand 639 states and 880 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:59:39,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:59:39,163 INFO L93 Difference]: Finished difference Result 826 states and 1132 transitions. [2024-11-16 22:59:39,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 22:59:39,164 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 108 [2024-11-16 22:59:39,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:59:39,169 INFO L225 Difference]: With dead ends: 826 [2024-11-16 22:59:39,169 INFO L226 Difference]: Without dead ends: 815 [2024-11-16 22:59:39,170 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 210 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-16 22:59:39,172 INFO L432 NwaCegarLoop]: 446 mSDtfsCounter, 750 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 1299 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 22:59:39,172 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 1299 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 22:59:39,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2024-11-16 22:59:39,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 641. [2024-11-16 22:59:39,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 632 states have (on average 1.3765822784810127) internal successors, (870), 634 states have internal predecessors, (870), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-16 22:59:39,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 882 transitions. [2024-11-16 22:59:39,197 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 882 transitions. Word has length 108 [2024-11-16 22:59:39,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:59:39,197 INFO L471 AbstractCegarLoop]: Abstraction has 641 states and 882 transitions. [2024-11-16 22:59:39,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:59:39,198 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 882 transitions. [2024-11-16 22:59:39,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-16 22:59:39,203 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:59:39,203 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] [2024-11-16 22:59:39,223 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 22:59:39,404 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,SelfDestructingSolverStorable6 [2024-11-16 22:59:39,405 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:59:39,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:59:39,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1595393806, now seen corresponding path program 1 times [2024-11-16 22:59:39,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:59:39,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347304100] [2024-11-16 22:59:39,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:59:39,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:59:39,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:39,693 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-16 22:59:39,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:39,699 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-16 22:59:39,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:39,703 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 22:59:39,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:59:39,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347304100] [2024-11-16 22:59:39,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347304100] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:59:39,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:59:39,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 22:59:39,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964463500] [2024-11-16 22:59:39,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:59:39,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 22:59:39,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:59:39,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 22:59:39,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 22:59:39,707 INFO L87 Difference]: Start difference. First operand 641 states and 882 transitions. Second operand has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:59:40,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:59:40,351 INFO L93 Difference]: Finished difference Result 1474 states and 2022 transitions. [2024-11-16 22:59:40,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 22:59:40,352 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 162 [2024-11-16 22:59:40,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:59:40,357 INFO L225 Difference]: With dead ends: 1474 [2024-11-16 22:59:40,359 INFO L226 Difference]: Without dead ends: 995 [2024-11-16 22:59:40,361 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-16 22:59:40,361 INFO L432 NwaCegarLoop]: 572 mSDtfsCounter, 1259 mSDsluCounter, 1268 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1264 SdHoareTripleChecker+Valid, 1840 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 22:59:40,361 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1264 Valid, 1840 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 22:59:40,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2024-11-16 22:59:40,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 783. [2024-11-16 22:59:40,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 773 states have (on average 1.3725743855109962) internal successors, (1061), 776 states have internal predecessors, (1061), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-16 22:59:40,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 1075 transitions. [2024-11-16 22:59:40,389 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 1075 transitions. Word has length 162 [2024-11-16 22:59:40,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:59:40,390 INFO L471 AbstractCegarLoop]: Abstraction has 783 states and 1075 transitions. [2024-11-16 22:59:40,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:59:40,391 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 1075 transitions. [2024-11-16 22:59:40,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-16 22:59:40,392 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:59:40,393 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, 1, 1, 1, 1, 1] [2024-11-16 22:59:40,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 22:59:40,393 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:59:40,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:59:40,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1519351415, now seen corresponding path program 1 times [2024-11-16 22:59:40,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:59:40,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646055341] [2024-11-16 22:59:40,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:59:40,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:59:40,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:40,920 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-16 22:59:40,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:40,947 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-16 22:59:40,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:40,953 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-16 22:59:40,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:59:40,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646055341] [2024-11-16 22:59:40,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646055341] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 22:59:40,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410771453] [2024-11-16 22:59:40,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:59:40,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:59:40,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 22:59:40,956 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 22:59:40,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 22:59:41,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:41,331 INFO L255 TraceCheckSpWp]: Trace formula consists of 778 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-16 22:59:41,340 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 22:59:41,398 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 22:59:41,402 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 22:59:41,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410771453] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:59:41,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 22:59:41,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-16 22:59:41,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621233322] [2024-11-16 22:59:41,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:59:41,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 22:59:41,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:59:41,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 22:59:41,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 22:59:41,405 INFO L87 Difference]: Start difference. First operand 783 states and 1075 transitions. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:59:41,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:59:41,672 INFO L93 Difference]: Finished difference Result 1496 states and 2056 transitions. [2024-11-16 22:59:41,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 22:59:41,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 173 [2024-11-16 22:59:41,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:59:41,677 INFO L225 Difference]: With dead ends: 1496 [2024-11-16 22:59:41,677 INFO L226 Difference]: Without dead ends: 828 [2024-11-16 22:59:41,678 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 22:59:41,679 INFO L432 NwaCegarLoop]: 447 mSDtfsCounter, 17 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 22:59:41,680 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1175 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 22:59:41,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2024-11-16 22:59:41,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 812. [2024-11-16 22:59:41,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 802 states have (on average 1.366583541147132) internal successors, (1096), 805 states have internal predecessors, (1096), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-16 22:59:41,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1110 transitions. [2024-11-16 22:59:41,715 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1110 transitions. Word has length 173 [2024-11-16 22:59:41,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:59:41,715 INFO L471 AbstractCegarLoop]: Abstraction has 812 states and 1110 transitions. [2024-11-16 22:59:41,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:59:41,716 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1110 transitions. [2024-11-16 22:59:41,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-16 22:59:41,718 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:59:41,718 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, 1, 1, 1, 1, 1, 1] [2024-11-16 22:59:41,737 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 22:59:41,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:59:41,923 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:59:41,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:59:41,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1006755132, now seen corresponding path program 1 times [2024-11-16 22:59:41,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:59:41,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210372062] [2024-11-16 22:59:41,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:59:41,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:59:42,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:42,442 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-16 22:59:42,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:42,446 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-16 22:59:42,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:42,448 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 22:59:42,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:59:42,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210372062] [2024-11-16 22:59:42,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210372062] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:59:42,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:59:42,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 22:59:42,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273029124] [2024-11-16 22:59:42,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:59:42,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 22:59:42,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:59:42,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 22:59:42,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 22:59:42,451 INFO L87 Difference]: Start difference. First operand 812 states and 1110 transitions. Second operand has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 6 states have internal predecessors, (166), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:59:43,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:59:43,096 INFO L93 Difference]: Finished difference Result 1520 states and 2083 transitions. [2024-11-16 22:59:43,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 22:59:43,098 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 6 states have internal predecessors, (166), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 174 [2024-11-16 22:59:43,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:59:43,102 INFO L225 Difference]: With dead ends: 1520 [2024-11-16 22:59:43,102 INFO L226 Difference]: Without dead ends: 827 [2024-11-16 22:59:43,104 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 22:59:43,105 INFO L432 NwaCegarLoop]: 440 mSDtfsCounter, 16 mSDsluCounter, 1351 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1791 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 22:59:43,105 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1791 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 22:59:43,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2024-11-16 22:59:43,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 820. [2024-11-16 22:59:43,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 810 states have (on average 1.365432098765432) internal successors, (1106), 813 states have internal predecessors, (1106), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-16 22:59:43,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1120 transitions. [2024-11-16 22:59:43,136 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1120 transitions. Word has length 174 [2024-11-16 22:59:43,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:59:43,137 INFO L471 AbstractCegarLoop]: Abstraction has 820 states and 1120 transitions. [2024-11-16 22:59:43,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 6 states have internal predecessors, (166), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:59:43,137 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1120 transitions. [2024-11-16 22:59:43,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-16 22:59:43,139 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:59:43,140 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:59:43,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 22:59:43,140 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:59:43,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:59:43,140 INFO L85 PathProgramCache]: Analyzing trace with hash 2126654419, now seen corresponding path program 1 times [2024-11-16 22:59:43,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:59:43,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23138558] [2024-11-16 22:59:43,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:59:43,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:59:43,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:43,562 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-16 22:59:43,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:43,566 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-16 22:59:43,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:43,569 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 22:59:43,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:59:43,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23138558] [2024-11-16 22:59:43,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23138558] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:59:43,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:59:43,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-16 22:59:43,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370675127] [2024-11-16 22:59:43,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:59:43,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 22:59:43,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:59:43,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 22:59:43,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 22:59:43,572 INFO L87 Difference]: Start difference. First operand 820 states and 1120 transitions. Second operand has 8 states, 8 states have (on average 20.875) internal successors, (167), 7 states have internal predecessors, (167), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:59:44,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:59:44,443 INFO L93 Difference]: Finished difference Result 1535 states and 2103 transitions. [2024-11-16 22:59:44,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 22:59:44,444 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.875) internal successors, (167), 7 states have internal predecessors, (167), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 175 [2024-11-16 22:59:44,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:59:44,448 INFO L225 Difference]: With dead ends: 1535 [2024-11-16 22:59:44,448 INFO L226 Difference]: Without dead ends: 845 [2024-11-16 22:59:44,449 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 22:59:44,450 INFO L432 NwaCegarLoop]: 432 mSDtfsCounter, 20 mSDsluCounter, 1958 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2390 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 22:59:44,450 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2390 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1020 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 22:59:44,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2024-11-16 22:59:44,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 836. [2024-11-16 22:59:44,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 826 states have (on average 1.3656174334140436) internal successors, (1128), 829 states have internal predecessors, (1128), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-16 22:59:44,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1142 transitions. [2024-11-16 22:59:44,479 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1142 transitions. Word has length 175 [2024-11-16 22:59:44,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:59:44,479 INFO L471 AbstractCegarLoop]: Abstraction has 836 states and 1142 transitions. [2024-11-16 22:59:44,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.875) internal successors, (167), 7 states have internal predecessors, (167), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:59:44,480 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1142 transitions. [2024-11-16 22:59:44,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-16 22:59:44,482 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:59:44,482 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:59:44,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 22:59:44,482 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:59:44,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:59:44,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1867351013, now seen corresponding path program 1 times [2024-11-16 22:59:44,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:59:44,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865958171] [2024-11-16 22:59:44,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:59:44,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:59:44,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:44,973 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-16 22:59:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:45,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-16 22:59:45,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:45,004 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-16 22:59:45,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:59:45,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865958171] [2024-11-16 22:59:45,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865958171] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 22:59:45,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059789609] [2024-11-16 22:59:45,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:59:45,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:59:45,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 22:59:45,007 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 22:59:45,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 22:59:45,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:45,408 INFO L255 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-16 22:59:45,413 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 22:59:45,422 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 22:59:46,051 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 22:59:46,051 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 22:59:46,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059789609] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:59:46,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 22:59:46,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2024-11-16 22:59:46,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37541977] [2024-11-16 22:59:46,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:59:46,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 22:59:46,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:59:46,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 22:59:46,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-16 22:59:46,056 INFO L87 Difference]: Start difference. First operand 836 states and 1142 transitions. Second operand has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:59:47,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:59:47,069 INFO L93 Difference]: Finished difference Result 1488 states and 2017 transitions. [2024-11-16 22:59:47,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 22:59:47,070 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 175 [2024-11-16 22:59:47,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:59:47,074 INFO L225 Difference]: With dead ends: 1488 [2024-11-16 22:59:47,075 INFO L226 Difference]: Without dead ends: 1071 [2024-11-16 22:59:47,076 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2024-11-16 22:59:47,076 INFO L432 NwaCegarLoop]: 455 mSDtfsCounter, 474 mSDsluCounter, 1975 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 2430 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 22:59:47,077 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 2430 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 22:59:47,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2024-11-16 22:59:47,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 872. [2024-11-16 22:59:47,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 862 states have (on average 1.3549883990719258) internal successors, (1168), 865 states have internal predecessors, (1168), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-16 22:59:47,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1182 transitions. [2024-11-16 22:59:47,116 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1182 transitions. Word has length 175 [2024-11-16 22:59:47,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:59:47,117 INFO L471 AbstractCegarLoop]: Abstraction has 872 states and 1182 transitions. [2024-11-16 22:59:47,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:59:47,118 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1182 transitions. [2024-11-16 22:59:47,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-16 22:59:47,120 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:59:47,120 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:59:47,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-16 22:59:47,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:59:47,325 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:59:47,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:59:47,325 INFO L85 PathProgramCache]: Analyzing trace with hash 325785441, now seen corresponding path program 1 times [2024-11-16 22:59:47,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:59:47,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981740437] [2024-11-16 22:59:47,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:59:47,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:59:47,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:47,886 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-16 22:59:47,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:47,912 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-16 22:59:47,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:47,917 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-16 22:59:47,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:59:47,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981740437] [2024-11-16 22:59:47,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981740437] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 22:59:47,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202608278] [2024-11-16 22:59:47,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:59:47,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:59:47,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 22:59:47,920 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 22:59:47,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 22:59:48,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:48,321 INFO L255 TraceCheckSpWp]: Trace formula consists of 778 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-16 22:59:48,326 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 22:59:48,423 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 22:59:48,423 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 22:59:48,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202608278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:59:48,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 22:59:48,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-16 22:59:48,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139355966] [2024-11-16 22:59:48,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:59:48,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 22:59:48,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:59:48,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 22:59:48,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-16 22:59:48,426 INFO L87 Difference]: Start difference. First operand 872 states and 1182 transitions. Second operand has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:59:48,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:59:48,836 INFO L93 Difference]: Finished difference Result 1295 states and 1755 transitions. [2024-11-16 22:59:48,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 22:59:48,837 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 176 [2024-11-16 22:59:48,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:59:48,841 INFO L225 Difference]: With dead ends: 1295 [2024-11-16 22:59:48,841 INFO L226 Difference]: Without dead ends: 878 [2024-11-16 22:59:48,842 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-16 22:59:48,843 INFO L432 NwaCegarLoop]: 438 mSDtfsCounter, 34 mSDsluCounter, 1469 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1907 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 22:59:48,844 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 1907 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 22:59:48,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2024-11-16 22:59:48,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 872. [2024-11-16 22:59:48,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 862 states have (on average 1.351508120649652) internal successors, (1165), 865 states have internal predecessors, (1165), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-16 22:59:48,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1179 transitions. [2024-11-16 22:59:48,875 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1179 transitions. Word has length 176 [2024-11-16 22:59:48,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:59:48,876 INFO L471 AbstractCegarLoop]: Abstraction has 872 states and 1179 transitions. [2024-11-16 22:59:48,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:59:48,876 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1179 transitions. [2024-11-16 22:59:48,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-16 22:59:48,878 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:59:48,878 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:59:48,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-16 22:59:49,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-16 22:59:49,079 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:59:49,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:59:49,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1194229982, now seen corresponding path program 1 times [2024-11-16 22:59:49,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:59:49,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594879342] [2024-11-16 22:59:49,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:59:49,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:59:49,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:49,490 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-16 22:59:49,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:49,493 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-16 22:59:49,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:49,496 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 22:59:49,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:59:49,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594879342] [2024-11-16 22:59:49,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594879342] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:59:49,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:59:49,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 22:59:49,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731628307] [2024-11-16 22:59:49,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:59:49,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 22:59:49,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:59:49,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 22:59:49,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 22:59:49,499 INFO L87 Difference]: Start difference. First operand 872 states and 1179 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 6 states have internal predecessors, (168), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:59:49,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:59:49,993 INFO L93 Difference]: Finished difference Result 1301 states and 1762 transitions. [2024-11-16 22:59:49,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 22:59:49,994 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 6 states have internal predecessors, (168), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 177 [2024-11-16 22:59:49,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:59:49,998 INFO L225 Difference]: With dead ends: 1301 [2024-11-16 22:59:49,998 INFO L226 Difference]: Without dead ends: 884 [2024-11-16 22:59:49,999 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 22:59:50,000 INFO L432 NwaCegarLoop]: 439 mSDtfsCounter, 16 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1935 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 22:59:50,001 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1935 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 22:59:50,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2024-11-16 22:59:50,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 881. [2024-11-16 22:59:50,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 871 states have (on average 1.3478760045924225) internal successors, (1174), 874 states have internal predecessors, (1174), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-16 22:59:50,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1188 transitions. [2024-11-16 22:59:50,036 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1188 transitions. Word has length 177 [2024-11-16 22:59:50,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:59:50,037 INFO L471 AbstractCegarLoop]: Abstraction has 881 states and 1188 transitions. [2024-11-16 22:59:50,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 6 states have internal predecessors, (168), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:59:50,038 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1188 transitions. [2024-11-16 22:59:50,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-16 22:59:50,039 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:59:50,040 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:59:50,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-16 22:59:50,040 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:59:50,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:59:50,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1833901627, now seen corresponding path program 1 times [2024-11-16 22:59:50,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:59:50,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454782949] [2024-11-16 22:59:50,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:59:50,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:59:50,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:50,427 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-16 22:59:50,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:50,430 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-16 22:59:50,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:50,432 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 22:59:50,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:59:50,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454782949] [2024-11-16 22:59:50,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454782949] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:59:50,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:59:50,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-16 22:59:50,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653125548] [2024-11-16 22:59:50,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:59:50,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 22:59:50,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:59:50,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 22:59:50,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 22:59:50,435 INFO L87 Difference]: Start difference. First operand 881 states and 1188 transitions. Second operand has 8 states, 8 states have (on average 21.125) internal successors, (169), 7 states have internal predecessors, (169), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:59:51,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:59:51,120 INFO L93 Difference]: Finished difference Result 1325 states and 1789 transitions. [2024-11-16 22:59:51,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 22:59:51,121 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.125) internal successors, (169), 7 states have internal predecessors, (169), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 178 [2024-11-16 22:59:51,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:59:51,125 INFO L225 Difference]: With dead ends: 1325 [2024-11-16 22:59:51,125 INFO L226 Difference]: Without dead ends: 899 [2024-11-16 22:59:51,126 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 22:59:51,128 INFO L432 NwaCegarLoop]: 431 mSDtfsCounter, 20 mSDsluCounter, 2210 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2641 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 22:59:51,129 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2641 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 22:59:51,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2024-11-16 22:59:51,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 893. [2024-11-16 22:59:51,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 893 states, 883 states have (on average 1.3465458663646659) internal successors, (1189), 886 states have internal predecessors, (1189), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-16 22:59:51,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1203 transitions. [2024-11-16 22:59:51,170 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1203 transitions. Word has length 178 [2024-11-16 22:59:51,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:59:51,171 INFO L471 AbstractCegarLoop]: Abstraction has 893 states and 1203 transitions. [2024-11-16 22:59:51,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.125) internal successors, (169), 7 states have internal predecessors, (169), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:59:51,171 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1203 transitions. [2024-11-16 22:59:51,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-16 22:59:51,173 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:59:51,173 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:59:51,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-16 22:59:51,174 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:59:51,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:59:51,174 INFO L85 PathProgramCache]: Analyzing trace with hash -2126085600, now seen corresponding path program 1 times [2024-11-16 22:59:51,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:59:51,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312206546] [2024-11-16 22:59:51,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:59:51,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:59:51,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:51,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-16 22:59:51,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:51,641 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-16 22:59:51,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:51,646 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-16 22:59:51,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:59:51,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312206546] [2024-11-16 22:59:51,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312206546] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 22:59:51,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904202969] [2024-11-16 22:59:51,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:59:51,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:59:51,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 22:59:51,650 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 22:59:51,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 22:59:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:52,137 INFO L255 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 22:59:52,140 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 22:59:52,158 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-16 22:59:52,158 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 22:59:52,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904202969] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:59:52,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 22:59:52,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2024-11-16 22:59:52,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106711813] [2024-11-16 22:59:52,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:59:52,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 22:59:52,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:59:52,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 22:59:52,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 22:59:52,161 INFO L87 Difference]: Start difference. First operand 893 states and 1203 transitions. Second operand has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:59:52,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:59:52,287 INFO L93 Difference]: Finished difference Result 1611 states and 2165 transitions. [2024-11-16 22:59:52,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 22:59:52,287 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 178 [2024-11-16 22:59:52,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:59:52,291 INFO L225 Difference]: With dead ends: 1611 [2024-11-16 22:59:52,292 INFO L226 Difference]: Without dead ends: 896 [2024-11-16 22:59:52,293 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 22:59:52,294 INFO L432 NwaCegarLoop]: 451 mSDtfsCounter, 0 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1349 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 22:59:52,294 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1349 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 22:59:52,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2024-11-16 22:59:52,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 896. [2024-11-16 22:59:52,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 885 states have (on average 1.3468926553672316) internal successors, (1192), 889 states have internal predecessors, (1192), 7 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-16 22:59:52,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1207 transitions. [2024-11-16 22:59:52,327 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1207 transitions. Word has length 178 [2024-11-16 22:59:52,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:59:52,327 INFO L471 AbstractCegarLoop]: Abstraction has 896 states and 1207 transitions. [2024-11-16 22:59:52,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:59:52,328 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1207 transitions. [2024-11-16 22:59:52,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-16 22:59:52,330 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:59:52,330 INFO L215 NwaCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:59:52,352 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 22:59:52,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-16 22:59:52,532 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:59:52,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:59:52,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1807665764, now seen corresponding path program 1 times [2024-11-16 22:59:52,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:59:52,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650291949] [2024-11-16 22:59:52,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:59:52,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:59:52,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:53,104 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-16 22:59:53,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:53,193 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-16 22:59:53,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:53,204 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 22:59:53,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:59:53,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650291949] [2024-11-16 22:59:53,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650291949] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 22:59:53,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682917244] [2024-11-16 22:59:53,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:59:53,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:59:53,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 22:59:53,209 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 22:59:53,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 22:59:53,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:53,728 INFO L255 TraceCheckSpWp]: Trace formula consists of 807 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-16 22:59:53,732 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 22:59:53,769 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 22:59:53,770 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 22:59:53,849 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 22:59:53,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682917244] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 22:59:53,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 22:59:53,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-16 22:59:53,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577880087] [2024-11-16 22:59:53,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 22:59:53,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 22:59:53,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:59:53,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 22:59:53,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-16 22:59:53,854 INFO L87 Difference]: Start difference. First operand 896 states and 1207 transitions. Second operand has 11 states, 11 states have (on average 17.0) internal successors, (187), 10 states have internal predecessors, (187), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 22:59:54,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:59:54,412 INFO L93 Difference]: Finished difference Result 1625 states and 2187 transitions. [2024-11-16 22:59:54,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 22:59:54,414 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 17.0) internal successors, (187), 10 states have internal predecessors, (187), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 180 [2024-11-16 22:59:54,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:59:54,419 INFO L225 Difference]: With dead ends: 1625 [2024-11-16 22:59:54,419 INFO L226 Difference]: Without dead ends: 905 [2024-11-16 22:59:54,421 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2024-11-16 22:59:54,421 INFO L432 NwaCegarLoop]: 446 mSDtfsCounter, 14 mSDsluCounter, 3014 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 3460 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 22:59:54,422 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 3460 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 22:59:54,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2024-11-16 22:59:54,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 905. [2024-11-16 22:59:54,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 893 states have (on average 1.3482642777155656) internal successors, (1204), 897 states have internal predecessors, (1204), 7 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-16 22:59:54,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1220 transitions. [2024-11-16 22:59:54,455 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1220 transitions. Word has length 180 [2024-11-16 22:59:54,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:59:54,455 INFO L471 AbstractCegarLoop]: Abstraction has 905 states and 1220 transitions. [2024-11-16 22:59:54,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.0) internal successors, (187), 10 states have internal predecessors, (187), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 22:59:54,456 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1220 transitions. [2024-11-16 22:59:54,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-11-16 22:59:54,459 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:59:54,459 INFO L215 NwaCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:59:54,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-16 22:59:54,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:59:54,664 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:59:54,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:59:54,664 INFO L85 PathProgramCache]: Analyzing trace with hash -767353184, now seen corresponding path program 2 times [2024-11-16 22:59:54,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:59:54,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367382235] [2024-11-16 22:59:54,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:59:54,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:59:54,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:55,200 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-16 22:59:55,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:55,296 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-16 22:59:55,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:55,308 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-16 22:59:55,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:59:55,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367382235] [2024-11-16 22:59:55,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367382235] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 22:59:55,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983223591] [2024-11-16 22:59:55,309 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 22:59:55,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:59:55,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 22:59:55,311 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 22:59:55,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 22:59:55,748 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-16 22:59:55,748 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 22:59:55,751 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 22:59:55,754 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 22:59:56,046 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-16 22:59:56,047 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 22:59:56,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983223591] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:59:56,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 22:59:56,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-16 22:59:56,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566498850] [2024-11-16 22:59:56,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:59:56,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 22:59:56,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:59:56,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 22:59:56,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-11-16 22:59:56,049 INFO L87 Difference]: Start difference. First operand 905 states and 1220 transitions. Second operand has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:59:56,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:59:56,498 INFO L93 Difference]: Finished difference Result 1358 states and 1830 transitions. [2024-11-16 22:59:56,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 22:59:56,499 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 184 [2024-11-16 22:59:56,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:59:56,503 INFO L225 Difference]: With dead ends: 1358 [2024-11-16 22:59:56,503 INFO L226 Difference]: Without dead ends: 920 [2024-11-16 22:59:56,505 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-11-16 22:59:56,506 INFO L432 NwaCegarLoop]: 442 mSDtfsCounter, 12 mSDsluCounter, 1898 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2340 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 22:59:56,506 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2340 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 22:59:56,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2024-11-16 22:59:56,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 905. [2024-11-16 22:59:56,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 893 states have (on average 1.3482642777155656) internal successors, (1204), 897 states have internal predecessors, (1204), 7 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-16 22:59:56,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1220 transitions. [2024-11-16 22:59:56,546 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1220 transitions. Word has length 184 [2024-11-16 22:59:56,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:59:56,547 INFO L471 AbstractCegarLoop]: Abstraction has 905 states and 1220 transitions. [2024-11-16 22:59:56,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:59:56,547 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1220 transitions. [2024-11-16 22:59:56,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-11-16 22:59:56,549 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:59:56,549 INFO L215 NwaCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:59:56,568 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-16 22:59:56,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-16 22:59:56,751 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:59:56,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:59:56,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1427124795, now seen corresponding path program 1 times [2024-11-16 22:59:56,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:59:56,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700982727] [2024-11-16 22:59:56,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:59:56,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:59:56,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:57,314 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-16 22:59:57,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:57,321 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-16 22:59:57,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:57,330 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-16 22:59:57,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:59:57,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700982727] [2024-11-16 22:59:57,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700982727] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:59:57,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:59:57,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-16 22:59:57,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188807364] [2024-11-16 22:59:57,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:59:57,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 22:59:57,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:59:57,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 22:59:57,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-16 22:59:57,335 INFO L87 Difference]: Start difference. First operand 905 states and 1220 transitions. Second operand has 10 states, 10 states have (on average 17.1) internal successors, (171), 9 states have internal predecessors, (171), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:59:57,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:59:57,975 INFO L93 Difference]: Finished difference Result 1373 states and 1848 transitions. [2024-11-16 22:59:57,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 22:59:57,976 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.1) internal successors, (171), 9 states have internal predecessors, (171), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 185 [2024-11-16 22:59:57,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:59:57,981 INFO L225 Difference]: With dead ends: 1373 [2024-11-16 22:59:57,981 INFO L226 Difference]: Without dead ends: 935 [2024-11-16 22:59:57,982 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-16 22:59:57,983 INFO L432 NwaCegarLoop]: 431 mSDtfsCounter, 28 mSDsluCounter, 2669 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 3100 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 22:59:57,983 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 3100 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 22:59:57,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2024-11-16 22:59:58,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 926. [2024-11-16 22:59:58,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 914 states have (on average 1.3468271334792123) internal successors, (1231), 918 states have internal predecessors, (1231), 7 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-16 22:59:58,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1247 transitions. [2024-11-16 22:59:58,016 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1247 transitions. Word has length 185 [2024-11-16 22:59:58,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:59:58,016 INFO L471 AbstractCegarLoop]: Abstraction has 926 states and 1247 transitions. [2024-11-16 22:59:58,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.1) internal successors, (171), 9 states have internal predecessors, (171), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:59:58,017 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1247 transitions. [2024-11-16 22:59:58,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-11-16 22:59:58,019 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:59:58,019 INFO L215 NwaCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:59:58,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-16 22:59:58,019 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:59:58,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:59:58,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1894893366, now seen corresponding path program 1 times [2024-11-16 22:59:58,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:59:58,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140505807] [2024-11-16 22:59:58,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:59:58,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:59:58,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:58,532 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-16 22:59:58,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:58,622 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-16 22:59:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:58,633 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-16 22:59:58,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:59:58,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140505807] [2024-11-16 22:59:58,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140505807] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 22:59:58,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551872285] [2024-11-16 22:59:58,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:59:58,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:59:58,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 22:59:58,636 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 22:59:58,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 22:59:59,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:59:59,189 INFO L255 TraceCheckSpWp]: Trace formula consists of 868 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-16 22:59:59,193 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 22:59:59,344 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-16 22:59:59,344 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 22:59:59,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551872285] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:59:59,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 22:59:59,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-16 22:59:59,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305212341] [2024-11-16 22:59:59,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:59:59,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 22:59:59,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:59:59,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 22:59:59,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-16 22:59:59,347 INFO L87 Difference]: Start difference. First operand 926 states and 1247 transitions. Second operand has 8 states, 8 states have (on average 21.375) internal successors, (171), 8 states have internal predecessors, (171), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:59:59,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:59:59,807 INFO L93 Difference]: Finished difference Result 1423 states and 1910 transitions. [2024-11-16 22:59:59,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 22:59:59,808 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.375) internal successors, (171), 8 states have internal predecessors, (171), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 185 [2024-11-16 22:59:59,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:59:59,812 INFO L225 Difference]: With dead ends: 1423 [2024-11-16 22:59:59,813 INFO L226 Difference]: Without dead ends: 964 [2024-11-16 22:59:59,814 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2024-11-16 22:59:59,815 INFO L432 NwaCegarLoop]: 443 mSDtfsCounter, 42 mSDsluCounter, 1948 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 2391 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 22:59:59,816 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 2391 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 22:59:59,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2024-11-16 22:59:59,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 941. [2024-11-16 22:59:59,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 941 states, 929 states have (on average 1.3444564047362755) internal successors, (1249), 933 states have internal predecessors, (1249), 7 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-16 22:59:59,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 1265 transitions. [2024-11-16 22:59:59,851 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 1265 transitions. Word has length 185 [2024-11-16 22:59:59,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:59:59,852 INFO L471 AbstractCegarLoop]: Abstraction has 941 states and 1265 transitions. [2024-11-16 22:59:59,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.375) internal successors, (171), 8 states have internal predecessors, (171), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:59:59,852 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 1265 transitions. [2024-11-16 22:59:59,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-11-16 22:59:59,854 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:59:59,854 INFO L215 NwaCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:59:59,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-16 23:00:00,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:00:00,059 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:00:00,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:00:00,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1971773300, now seen corresponding path program 1 times [2024-11-16 23:00:00,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:00:00,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863823183] [2024-11-16 23:00:00,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:00:00,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:00:00,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:00:00,722 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-16 23:00:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:00:00,729 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-16 23:00:00,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:00:00,738 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-16 23:00:00,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:00:00,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863823183] [2024-11-16 23:00:00,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863823183] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:00:00,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:00:00,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-16 23:00:00,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971021115] [2024-11-16 23:00:00,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:00:00,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 23:00:00,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:00:00,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 23:00:00,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-16 23:00:00,741 INFO L87 Difference]: Start difference. First operand 941 states and 1265 transitions. Second operand has 11 states, 11 states have (on average 15.636363636363637) internal successors, (172), 10 states have internal predecessors, (172), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 23:00:01,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:00:01,481 INFO L93 Difference]: Finished difference Result 1442 states and 1938 transitions. [2024-11-16 23:00:01,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 23:00:01,482 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.636363636363637) internal successors, (172), 10 states have internal predecessors, (172), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 186 [2024-11-16 23:00:01,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:00:01,486 INFO L225 Difference]: With dead ends: 1442 [2024-11-16 23:00:01,486 INFO L226 Difference]: Without dead ends: 968 [2024-11-16 23:00:01,488 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-11-16 23:00:01,488 INFO L432 NwaCegarLoop]: 437 mSDtfsCounter, 34 mSDsluCounter, 2659 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3096 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 23:00:01,488 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3096 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 23:00:01,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2024-11-16 23:00:01,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 950. [2024-11-16 23:00:01,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 950 states, 938 states have (on average 1.3411513859275053) internal successors, (1258), 942 states have internal predecessors, (1258), 7 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-16 23:00:01,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1274 transitions. [2024-11-16 23:00:01,520 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1274 transitions. Word has length 186 [2024-11-16 23:00:01,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:00:01,521 INFO L471 AbstractCegarLoop]: Abstraction has 950 states and 1274 transitions. [2024-11-16 23:00:01,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.636363636363637) internal successors, (172), 10 states have internal predecessors, (172), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 23:00:01,521 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1274 transitions. [2024-11-16 23:00:01,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-11-16 23:00:01,523 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:00:01,524 INFO L215 NwaCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:00:01,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-16 23:00:01,524 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:00:01,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:00:01,524 INFO L85 PathProgramCache]: Analyzing trace with hash 707270183, now seen corresponding path program 1 times [2024-11-16 23:00:01,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:00:01,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727926950] [2024-11-16 23:00:01,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:00:01,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:00:01,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:00:01,978 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-16 23:00:01,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:00:02,068 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-16 23:00:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:00:02,079 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-16 23:00:02,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:00:02,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727926950] [2024-11-16 23:00:02,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727926950] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:00:02,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789741829] [2024-11-16 23:00:02,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:00:02,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:00:02,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:00:02,082 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 23:00:02,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-16 23:00:02,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:00:02,848 INFO L255 TraceCheckSpWp]: Trace formula consists of 869 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-16 23:00:02,852 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:00:02,971 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 23:00:02,971 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 23:00:03,192 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 23:00:03,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789741829] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 23:00:03,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 23:00:03,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 8] total 20 [2024-11-16 23:00:03,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20810944] [2024-11-16 23:00:03,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 23:00:03,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-16 23:00:03,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:00:03,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-16 23:00:03,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2024-11-16 23:00:03,194 INFO L87 Difference]: Start difference. First operand 950 states and 1274 transitions. Second operand has 20 states, 20 states have (on average 10.0) internal successors, (200), 19 states have internal predecessors, (200), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 23:00:04,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:00:04,105 INFO L93 Difference]: Finished difference Result 1705 states and 2282 transitions. [2024-11-16 23:00:04,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-16 23:00:04,106 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 10.0) internal successors, (200), 19 states have internal predecessors, (200), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 186 [2024-11-16 23:00:04,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:00:04,110 INFO L225 Difference]: With dead ends: 1705 [2024-11-16 23:00:04,110 INFO L226 Difference]: Without dead ends: 801 [2024-11-16 23:00:04,112 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=268, Invalid=662, Unknown=0, NotChecked=0, Total=930 [2024-11-16 23:00:04,112 INFO L432 NwaCegarLoop]: 367 mSDtfsCounter, 41 mSDsluCounter, 3897 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 4264 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 23:00:04,112 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 4264 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 23:00:04,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2024-11-16 23:00:04,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 797. [2024-11-16 23:00:04,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 785 states have (on average 1.3171974522292993) internal successors, (1034), 789 states have internal predecessors, (1034), 7 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-16 23:00:04,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1049 transitions. [2024-11-16 23:00:04,143 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1049 transitions. Word has length 186 [2024-11-16 23:00:04,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:00:04,143 INFO L471 AbstractCegarLoop]: Abstraction has 797 states and 1049 transitions. [2024-11-16 23:00:04,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 10.0) internal successors, (200), 19 states have internal predecessors, (200), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 23:00:04,144 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1049 transitions. [2024-11-16 23:00:04,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-16 23:00:04,146 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:00:04,146 INFO L215 NwaCegarLoop]: trace histogram [15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:00:04,173 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-16 23:00:04,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-16 23:00:04,351 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:00:04,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:00:04,351 INFO L85 PathProgramCache]: Analyzing trace with hash 475976779, now seen corresponding path program 2 times [2024-11-16 23:00:04,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:00:04,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314015625] [2024-11-16 23:00:04,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:00:04,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:00:04,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:00:05,022 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-16 23:00:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:00:05,182 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-16 23:00:05,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:00:05,202 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 2 proven. 83 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-16 23:00:05,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:00:05,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314015625] [2024-11-16 23:00:05,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314015625] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:00:05,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304546930] [2024-11-16 23:00:05,204 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 23:00:05,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:00:05,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:00:05,206 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 23:00:05,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-16 23:00:05,748 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-16 23:00:05,748 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 23:00:05,755 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-16 23:00:05,763 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:00:06,168 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2024-11-16 23:00:06,168 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 23:00:06,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304546930] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:00:06,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 23:00:06,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2024-11-16 23:00:06,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012967300] [2024-11-16 23:00:06,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:00:06,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 23:00:06,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:00:06,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 23:00:06,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2024-11-16 23:00:06,170 INFO L87 Difference]: Start difference. First operand 797 states and 1049 transitions. Second operand has 10 states, 10 states have (on average 17.2) internal successors, (172), 10 states have internal predecessors, (172), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 23:00:07,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:00:07,494 INFO L93 Difference]: Finished difference Result 1310 states and 1737 transitions. [2024-11-16 23:00:07,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 23:00:07,495 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.2) internal successors, (172), 10 states have internal predecessors, (172), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 195 [2024-11-16 23:00:07,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:00:07,498 INFO L225 Difference]: With dead ends: 1310 [2024-11-16 23:00:07,498 INFO L226 Difference]: Without dead ends: 827 [2024-11-16 23:00:07,499 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2024-11-16 23:00:07,500 INFO L432 NwaCegarLoop]: 375 mSDtfsCounter, 17 mSDsluCounter, 2554 mSDsCounter, 0 mSdLazyCounter, 876 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2929 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-16 23:00:07,500 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2929 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 876 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-16 23:00:07,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2024-11-16 23:00:07,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 818. [2024-11-16 23:00:07,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 806 states have (on average 1.316377171215881) internal successors, (1061), 810 states have internal predecessors, (1061), 7 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-16 23:00:07,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1076 transitions. [2024-11-16 23:00:07,527 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1076 transitions. Word has length 195 [2024-11-16 23:00:07,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:00:07,528 INFO L471 AbstractCegarLoop]: Abstraction has 818 states and 1076 transitions. [2024-11-16 23:00:07,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.2) internal successors, (172), 10 states have internal predecessors, (172), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 23:00:07,528 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1076 transitions. [2024-11-16 23:00:07,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-16 23:00:07,530 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:00:07,530 INFO L215 NwaCegarLoop]: trace histogram [15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:00:07,550 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-16 23:00:07,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-16 23:00:07,735 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:00:07,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:00:07,736 INFO L85 PathProgramCache]: Analyzing trace with hash -420229717, now seen corresponding path program 1 times [2024-11-16 23:00:07,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:00:07,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771811574] [2024-11-16 23:00:07,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:00:07,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:00:08,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:00:17,352 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-16 23:00:17,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:00:17,489 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-16 23:00:17,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:00:17,968 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 2 proven. 128 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-16 23:00:17,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:00:17,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771811574] [2024-11-16 23:00:17,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771811574] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:00:17,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218747029] [2024-11-16 23:00:17,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:00:17,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:00:17,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:00:17,971 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 23:00:17,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-16 23:00:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:00:18,555 INFO L255 TraceCheckSpWp]: Trace formula consists of 1004 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-16 23:00:18,558 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:00:18,732 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2024-11-16 23:00:18,732 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 23:00:18,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218747029] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:00:18,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 23:00:18,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [28] total 33 [2024-11-16 23:00:18,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651428519] [2024-11-16 23:00:18,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:00:18,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 23:00:18,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:00:18,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 23:00:18,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=973, Unknown=0, NotChecked=0, Total=1056 [2024-11-16 23:00:18,735 INFO L87 Difference]: Start difference. First operand 818 states and 1076 transitions. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 23:00:19,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:00:19,021 INFO L93 Difference]: Finished difference Result 1345 states and 1775 transitions. [2024-11-16 23:00:19,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 23:00:19,022 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 195 [2024-11-16 23:00:19,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:00:19,026 INFO L225 Difference]: With dead ends: 1345 [2024-11-16 23:00:19,026 INFO L226 Difference]: Without dead ends: 841 [2024-11-16 23:00:19,027 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=91, Invalid=1099, Unknown=0, NotChecked=0, Total=1190 [2024-11-16 23:00:19,028 INFO L432 NwaCegarLoop]: 364 mSDtfsCounter, 41 mSDsluCounter, 1572 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1936 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 23:00:19,028 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 1936 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 23:00:19,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2024-11-16 23:00:19,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 824. [2024-11-16 23:00:19,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 812 states have (on average 1.314039408866995) internal successors, (1067), 816 states have internal predecessors, (1067), 7 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-16 23:00:19,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1082 transitions. [2024-11-16 23:00:19,055 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1082 transitions. Word has length 195 [2024-11-16 23:00:19,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:00:19,056 INFO L471 AbstractCegarLoop]: Abstraction has 824 states and 1082 transitions. [2024-11-16 23:00:19,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 23:00:19,056 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1082 transitions. [2024-11-16 23:00:19,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-16 23:00:19,058 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:00:19,059 INFO L215 NwaCegarLoop]: trace histogram [15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:00:19,081 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-16 23:00:19,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-16 23:00:19,259 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:00:19,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:00:19,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1072386535, now seen corresponding path program 1 times [2024-11-16 23:00:19,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:00:19,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124976425] [2024-11-16 23:00:19,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:00:19,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:00:19,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:00:19,823 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-16 23:00:19,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:00:19,973 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-16 23:00:19,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:00:19,992 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 2 proven. 83 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-16 23:00:19,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:00:19,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124976425] [2024-11-16 23:00:19,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124976425] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:00:19,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127787167] [2024-11-16 23:00:19,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:00:19,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:00:19,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:00:19,995 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 23:00:19,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-16 23:00:21,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:00:21,075 INFO L255 TraceCheckSpWp]: Trace formula consists of 1004 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-16 23:00:21,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:00:21,276 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2024-11-16 23:00:21,277 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 23:00:21,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127787167] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:00:21,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 23:00:21,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2024-11-16 23:00:21,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611785433] [2024-11-16 23:00:21,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:00:21,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 23:00:21,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:00:21,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 23:00:21,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2024-11-16 23:00:21,278 INFO L87 Difference]: Start difference. First operand 824 states and 1082 transitions. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 23:00:21,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:00:21,598 INFO L93 Difference]: Finished difference Result 1349 states and 1779 transitions. [2024-11-16 23:00:21,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 23:00:21,600 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 195 [2024-11-16 23:00:21,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:00:21,604 INFO L225 Difference]: With dead ends: 1349 [2024-11-16 23:00:21,604 INFO L226 Difference]: Without dead ends: 839 [2024-11-16 23:00:21,606 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2024-11-16 23:00:21,606 INFO L432 NwaCegarLoop]: 374 mSDtfsCounter, 10 mSDsluCounter, 1558 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1932 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 23:00:21,606 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1932 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 23:00:21,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2024-11-16 23:00:21,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 824. [2024-11-16 23:00:21,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 812 states have (on average 1.314039408866995) internal successors, (1067), 816 states have internal predecessors, (1067), 7 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-16 23:00:21,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1082 transitions. [2024-11-16 23:00:21,633 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1082 transitions. Word has length 195 [2024-11-16 23:00:21,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:00:21,634 INFO L471 AbstractCegarLoop]: Abstraction has 824 states and 1082 transitions. [2024-11-16 23:00:21,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 23:00:21,634 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1082 transitions. [2024-11-16 23:00:21,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-16 23:00:21,636 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:00:21,636 INFO L215 NwaCegarLoop]: trace histogram [15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:00:21,668 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-16 23:00:21,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-16 23:00:21,837 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:00:21,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:00:21,837 INFO L85 PathProgramCache]: Analyzing trace with hash -956119699, now seen corresponding path program 1 times [2024-11-16 23:00:21,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:00:21,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956618820] [2024-11-16 23:00:21,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:00:21,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:00:22,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:00:22,368 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-16 23:00:22,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:00:22,502 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-16 23:00:22,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:00:22,523 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 2 proven. 83 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-16 23:00:22,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:00:22,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956618820] [2024-11-16 23:00:22,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956618820] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:00:22,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477963373] [2024-11-16 23:00:22,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:00:22,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:00:22,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:00:22,526 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 23:00:22,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-16 23:00:24,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:00:24,056 INFO L255 TraceCheckSpWp]: Trace formula consists of 1005 conjuncts, 210 conjuncts are in the unsatisfiable core [2024-11-16 23:00:24,068 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:00:24,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-16 23:00:24,347 INFO L349 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2024-11-16 23:00:24,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 29 [2024-11-16 23:00:24,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-16 23:00:24,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 23:00:24,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2024-11-16 23:00:24,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-16 23:00:24,706 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-16 23:00:24,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 51 [2024-11-16 23:00:24,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-16 23:00:28,606 INFO L224 Elim1Store]: Index analysis took 218 ms