/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-pthread/cs_szymanski.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 04:07:22,967 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 04:07:23,035 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 04:07:23,038 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 04:07:23,039 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 04:07:23,059 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 04:07:23,060 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 04:07:23,060 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 04:07:23,060 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 04:07:23,063 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 04:07:23,063 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 04:07:23,064 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 04:07:23,064 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 04:07:23,065 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 04:07:23,065 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 04:07:23,065 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 04:07:23,066 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 04:07:23,066 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 04:07:23,066 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 04:07:23,066 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 04:07:23,066 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 04:07:23,067 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 04:07:23,067 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 04:07:23,067 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 04:07:23,067 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 04:07:23,067 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 04:07:23,067 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 04:07:23,067 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 04:07:23,068 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 04:07:23,068 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 04:07:23,069 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 04:07:23,069 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 04:07:23,069 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 04:07:23,069 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 04:07:23,069 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 04:07:23,069 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 04:07:23,069 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 04:07:23,069 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 04:07:23,070 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 04:07:23,070 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 04:07:23,070 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 04:07:23,070 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 04:07:23,070 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 04:07:23,070 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 04:07:23,271 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 04:07:23,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 04:07:23,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 04:07:23,293 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 04:07:23,293 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 04:07:23,294 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-pthread/cs_szymanski.i [2023-12-20 04:07:24,346 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 04:07:24,521 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 04:07:24,522 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-pthread/cs_szymanski.i [2023-12-20 04:07:24,533 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/083a1d044/151b3ac5ea864017b87d4291bc6f5c71/FLAG9a2db960e [2023-12-20 04:07:24,547 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/083a1d044/151b3ac5ea864017b87d4291bc6f5c71 [2023-12-20 04:07:24,549 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 04:07:24,550 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 04:07:24,552 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 04:07:24,552 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 04:07:24,556 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 04:07:24,556 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 04:07:24" (1/1) ... [2023-12-20 04:07:24,557 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46ca7c4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:07:24, skipping insertion in model container [2023-12-20 04:07:24,557 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 04:07:24" (1/1) ... [2023-12-20 04:07:24,604 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 04:07:24,813 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-pthread/cs_szymanski.i[23606,23619] [2023-12-20 04:07:24,938 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 04:07:24,956 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 04:07:24,985 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-pthread/cs_szymanski.i[23606,23619] [2023-12-20 04:07:25,029 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 04:07:25,061 INFO L206 MainTranslator]: Completed translation [2023-12-20 04:07:25,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:07:25 WrapperNode [2023-12-20 04:07:25,062 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 04:07:25,063 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 04:07:25,063 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 04:07:25,063 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 04:07:25,068 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:07:25" (1/1) ... [2023-12-20 04:07:25,093 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:07:25" (1/1) ... [2023-12-20 04:07:25,121 INFO L138 Inliner]: procedures = 145, calls = 289, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 401 [2023-12-20 04:07:25,122 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 04:07:25,122 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 04:07:25,122 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 04:07:25,122 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 04:07:25,131 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:07:25" (1/1) ... [2023-12-20 04:07:25,131 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:07:25" (1/1) ... [2023-12-20 04:07:25,142 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:07:25" (1/1) ... [2023-12-20 04:07:25,164 INFO L175 MemorySlicer]: Split 136 memory accesses to 15 slices as follows [2, 5, 8, 8, 29, 21, 7, 13, 7, 7, 6, 13, 5, 0, 5]. 21 percent of accesses are in the largest equivalence class. The 37 initializations are split as follows [2, 0, 3, 3, 9, 9, 3, 0, 3, 3, 2, 0, 0, 0, 0]. The 34 writes are split as follows [0, 1, 2, 2, 11, 6, 2, 1, 2, 2, 2, 1, 1, 0, 1]. [2023-12-20 04:07:25,165 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:07:25" (1/1) ... [2023-12-20 04:07:25,165 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:07:25" (1/1) ... [2023-12-20 04:07:25,195 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:07:25" (1/1) ... [2023-12-20 04:07:25,198 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:07:25" (1/1) ... [2023-12-20 04:07:25,202 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:07:25" (1/1) ... [2023-12-20 04:07:25,205 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:07:25" (1/1) ... [2023-12-20 04:07:25,211 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 04:07:25,219 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 04:07:25,220 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 04:07:25,220 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 04:07:25,220 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:07:25" (1/1) ... [2023-12-20 04:07:25,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 04:07:25,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 04:07:25,253 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) [2023-12-20 04:07:25,308 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 [2023-12-20 04:07:25,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-20 04:07:25,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-20 04:07:25,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-20 04:07:25,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-12-20 04:07:25,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-12-20 04:07:25,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-12-20 04:07:25,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-12-20 04:07:25,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-12-20 04:07:25,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-12-20 04:07:25,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2023-12-20 04:07:25,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2023-12-20 04:07:25,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2023-12-20 04:07:25,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2023-12-20 04:07:25,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2023-12-20 04:07:25,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2023-12-20 04:07:25,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-20 04:07:25,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-20 04:07:25,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-20 04:07:25,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-12-20 04:07:25,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-12-20 04:07:25,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-12-20 04:07:25,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-12-20 04:07:25,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-12-20 04:07:25,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-12-20 04:07:25,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2023-12-20 04:07:25,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2023-12-20 04:07:25,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2023-12-20 04:07:25,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2023-12-20 04:07:25,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2023-12-20 04:07:25,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2023-12-20 04:07:25,334 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-20 04:07:25,334 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-20 04:07:25,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 04:07:25,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-20 04:07:25,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-12-20 04:07:25,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-12-20 04:07:25,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-12-20 04:07:25,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-12-20 04:07:25,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-12-20 04:07:25,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-12-20 04:07:25,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-12-20 04:07:25,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-12-20 04:07:25,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2023-12-20 04:07:25,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2023-12-20 04:07:25,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2023-12-20 04:07:25,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#11 [2023-12-20 04:07:25,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#12 [2023-12-20 04:07:25,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#13 [2023-12-20 04:07:25,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#14 [2023-12-20 04:07:25,335 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2023-12-20 04:07:25,335 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2023-12-20 04:07:25,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-12-20 04:07:25,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-12-20 04:07:25,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-12-20 04:07:25,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-12-20 04:07:25,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-12-20 04:07:25,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-12-20 04:07:25,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-12-20 04:07:25,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-12-20 04:07:25,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2023-12-20 04:07:25,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2023-12-20 04:07:25,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2023-12-20 04:07:25,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2023-12-20 04:07:25,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2023-12-20 04:07:25,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#13 [2023-12-20 04:07:25,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#14 [2023-12-20 04:07:25,337 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2023-12-20 04:07:25,337 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2023-12-20 04:07:25,337 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2023-12-20 04:07:25,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2023-12-20 04:07:25,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-20 04:07:25,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-12-20 04:07:25,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-12-20 04:07:25,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-12-20 04:07:25,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-12-20 04:07:25,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-12-20 04:07:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-12-20 04:07:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-12-20 04:07:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2023-12-20 04:07:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2023-12-20 04:07:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2023-12-20 04:07:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#10 [2023-12-20 04:07:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#11 [2023-12-20 04:07:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#12 [2023-12-20 04:07:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#13 [2023-12-20 04:07:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#14 [2023-12-20 04:07:25,340 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2023-12-20 04:07:25,340 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2023-12-20 04:07:25,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 04:07:25,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-20 04:07:25,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-20 04:07:25,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-20 04:07:25,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-20 04:07:25,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-12-20 04:07:25,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-12-20 04:07:25,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-12-20 04:07:25,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-12-20 04:07:25,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-12-20 04:07:25,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-12-20 04:07:25,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-12-20 04:07:25,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-12-20 04:07:25,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-12-20 04:07:25,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-12-20 04:07:25,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 04:07:25,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 04:07:25,549 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 04:07:25,551 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 04:07:29,895 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 04:07:29,972 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 04:07:29,973 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-20 04:07:29,973 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 04:07:29 BoogieIcfgContainer [2023-12-20 04:07:29,973 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 04:07:29,974 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 04:07:29,974 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 04:07:29,976 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 04:07:29,976 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 04:07:24" (1/3) ... [2023-12-20 04:07:29,977 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c2c552b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 04:07:29, skipping insertion in model container [2023-12-20 04:07:29,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:07:25" (2/3) ... [2023-12-20 04:07:29,977 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c2c552b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 04:07:29, skipping insertion in model container [2023-12-20 04:07:29,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 04:07:29" (3/3) ... [2023-12-20 04:07:29,978 INFO L112 eAbstractionObserver]: Analyzing ICFG cs_szymanski.i [2023-12-20 04:07:29,992 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 04:07:29,993 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 04:07:30,035 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 04:07:30,040 INFO L357 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, mHoare=true, 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;@5cac0ec6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 04:07:30,040 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 04:07:30,045 INFO L276 IsEmpty]: Start isEmpty. Operand has 103 states, 64 states have (on average 1.359375) internal successors, (87), 65 states have internal predecessors, (87), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-20 04:07:30,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-20 04:07:30,057 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 04:07:30,057 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 04:07:30,058 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 04:07:30,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 04:07:30,062 INFO L85 PathProgramCache]: Analyzing trace with hash -779932173, now seen corresponding path program 1 times [2023-12-20 04:07:30,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 04:07:30,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335659877] [2023-12-20 04:07:30,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 04:07:30,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 04:07:30,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:30,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 04:07:30,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:30,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 04:07:30,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:30,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-20 04:07:30,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:30,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 04:07:30,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:30,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-20 04:07:30,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:30,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-20 04:07:30,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:30,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 04:07:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:30,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-20 04:07:30,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:30,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-20 04:07:30,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:30,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-20 04:07:30,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:30,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-20 04:07:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:30,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-20 04:07:30,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:30,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-20 04:07:30,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:30,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-20 04:07:30,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:30,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-20 04:07:30,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:30,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-20 04:07:30,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:30,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-20 04:07:30,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:30,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-20 04:07:30,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:30,646 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-20 04:07:30,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 04:07:30,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335659877] [2023-12-20 04:07:30,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335659877] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 04:07:30,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 04:07:30,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 04:07:30,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878571331] [2023-12-20 04:07:30,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 04:07:30,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 04:07:30,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 04:07:30,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 04:07:30,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 04:07:30,682 INFO L87 Difference]: Start difference. First operand has 103 states, 64 states have (on average 1.359375) internal successors, (87), 65 states have internal predecessors, (87), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-20 04:07:30,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 04:07:30,782 INFO L93 Difference]: Finished difference Result 208 states and 338 transitions. [2023-12-20 04:07:30,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 04:07:30,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 119 [2023-12-20 04:07:30,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 04:07:30,791 INFO L225 Difference]: With dead ends: 208 [2023-12-20 04:07:30,792 INFO L226 Difference]: Without dead ends: 104 [2023-12-20 04:07:30,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 04:07:30,801 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 3 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 04:07:30,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 279 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 04:07:30,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-12-20 04:07:30,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 102. [2023-12-20 04:07:30,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 64 states have (on average 1.28125) internal successors, (82), 64 states have internal predecessors, (82), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-20 04:07:30,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 146 transitions. [2023-12-20 04:07:30,845 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 146 transitions. Word has length 119 [2023-12-20 04:07:30,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 04:07:30,845 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 146 transitions. [2023-12-20 04:07:30,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-20 04:07:30,845 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 146 transitions. [2023-12-20 04:07:30,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-20 04:07:30,848 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 04:07:30,848 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 04:07:30,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 04:07:30,849 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 04:07:30,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 04:07:30,849 INFO L85 PathProgramCache]: Analyzing trace with hash 576687601, now seen corresponding path program 1 times [2023-12-20 04:07:30,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 04:07:30,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026167303] [2023-12-20 04:07:30,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 04:07:30,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 04:07:30,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:31,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 04:07:31,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:31,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 04:07:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:31,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 04:07:31,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:31,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-20 04:07:31,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:31,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-20 04:07:31,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:31,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 04:07:31,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:31,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-20 04:07:31,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:31,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-20 04:07:31,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:31,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-20 04:07:31,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:31,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-20 04:07:31,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:31,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-20 04:07:31,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:31,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 04:07:31,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:31,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-20 04:07:31,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:31,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-20 04:07:31,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:31,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-20 04:07:31,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:31,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-20 04:07:31,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:31,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 04:07:31,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:31,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-20 04:07:31,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:31,212 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-20 04:07:31,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 04:07:31,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026167303] [2023-12-20 04:07:31,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026167303] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 04:07:31,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 04:07:31,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 04:07:31,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635727721] [2023-12-20 04:07:31,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 04:07:31,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 04:07:31,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 04:07:31,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 04:07:31,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 04:07:31,219 INFO L87 Difference]: Start difference. First operand 102 states and 146 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-20 04:07:31,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 04:07:31,264 INFO L93 Difference]: Finished difference Result 203 states and 292 transitions. [2023-12-20 04:07:31,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 04:07:31,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 122 [2023-12-20 04:07:31,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 04:07:31,270 INFO L225 Difference]: With dead ends: 203 [2023-12-20 04:07:31,270 INFO L226 Difference]: Without dead ends: 103 [2023-12-20 04:07:31,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 04:07:31,272 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 0 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 04:07:31,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 280 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 04:07:31,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-12-20 04:07:31,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2023-12-20 04:07:31,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 65 states have (on average 1.2769230769230768) internal successors, (83), 65 states have internal predecessors, (83), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-20 04:07:31,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 147 transitions. [2023-12-20 04:07:31,292 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 147 transitions. Word has length 122 [2023-12-20 04:07:31,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 04:07:31,293 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 147 transitions. [2023-12-20 04:07:31,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-20 04:07:31,293 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 147 transitions. [2023-12-20 04:07:31,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-20 04:07:31,295 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 04:07:31,295 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 04:07:31,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 04:07:31,295 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 04:07:31,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 04:07:31,296 INFO L85 PathProgramCache]: Analyzing trace with hash -593868596, now seen corresponding path program 1 times [2023-12-20 04:07:31,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 04:07:31,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105384689] [2023-12-20 04:07:31,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 04:07:31,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 04:07:31,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:31,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 04:07:31,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:31,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 04:07:31,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:31,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 04:07:31,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:31,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-20 04:07:31,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:31,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 04:07:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:31,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 04:07:31,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:31,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 04:07:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:31,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-20 04:07:31,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:31,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-20 04:07:31,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:31,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-20 04:07:31,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:31,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-20 04:07:31,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:31,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-20 04:07:31,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:31,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 04:07:31,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:31,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-20 04:07:31,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:31,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-20 04:07:31,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:31,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-20 04:07:31,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:31,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-20 04:07:31,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:31,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-20 04:07:31,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:31,562 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-20 04:07:31,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 04:07:31,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105384689] [2023-12-20 04:07:31,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105384689] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 04:07:31,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005663563] [2023-12-20 04:07:31,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 04:07:31,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 04:07:31,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 04:07:31,565 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) [2023-12-20 04:07:31,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 04:07:31,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:31,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 04:07:31,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 04:07:31,985 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-20 04:07:31,985 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 04:07:32,036 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-20 04:07:32,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005663563] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 04:07:32,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 04:07:32,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2023-12-20 04:07:32,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227729917] [2023-12-20 04:07:32,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 04:07:32,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 04:07:32,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 04:07:32,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 04:07:32,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-20 04:07:32,038 INFO L87 Difference]: Start difference. First operand 103 states and 147 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 1 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2023-12-20 04:07:32,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 04:07:32,100 INFO L93 Difference]: Finished difference Result 206 states and 296 transitions. [2023-12-20 04:07:32,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 04:07:32,101 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 1 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) Word has length 123 [2023-12-20 04:07:32,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 04:07:32,103 INFO L225 Difference]: With dead ends: 206 [2023-12-20 04:07:32,103 INFO L226 Difference]: Without dead ends: 105 [2023-12-20 04:07:32,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 279 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-20 04:07:32,105 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 0 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 04:07:32,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 558 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 04:07:32,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-12-20 04:07:32,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2023-12-20 04:07:32,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 67 states have (on average 1.2686567164179106) internal successors, (85), 67 states have internal predecessors, (85), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-20 04:07:32,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 149 transitions. [2023-12-20 04:07:32,118 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 149 transitions. Word has length 123 [2023-12-20 04:07:32,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 04:07:32,119 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 149 transitions. [2023-12-20 04:07:32,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 1 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2023-12-20 04:07:32,119 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 149 transitions. [2023-12-20 04:07:32,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-20 04:07:32,120 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 04:07:32,120 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 04:07:32,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 04:07:32,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 04:07:32,331 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 04:07:32,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 04:07:32,332 INFO L85 PathProgramCache]: Analyzing trace with hash -2144446100, now seen corresponding path program 2 times [2023-12-20 04:07:32,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 04:07:32,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486762432] [2023-12-20 04:07:32,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 04:07:32,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 04:07:32,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:32,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 04:07:32,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:32,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-20 04:07:32,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:32,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 04:07:32,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:32,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-20 04:07:32,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:32,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-20 04:07:32,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:32,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 04:07:32,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:32,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-20 04:07:32,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:32,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-20 04:07:32,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:32,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-20 04:07:32,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:32,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-20 04:07:32,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:32,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-20 04:07:32,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:32,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-20 04:07:32,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:32,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-20 04:07:32,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:32,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-20 04:07:32,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:32,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-20 04:07:32,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:32,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-20 04:07:32,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:32,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-20 04:07:32,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:32,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 04:07:32,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:32,576 INFO L134 CoverageAnalysis]: Checked inductivity of 619 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 618 trivial. 0 not checked. [2023-12-20 04:07:32,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 04:07:32,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486762432] [2023-12-20 04:07:32,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486762432] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 04:07:32,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709356391] [2023-12-20 04:07:32,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-20 04:07:32,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 04:07:32,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 04:07:32,578 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) [2023-12-20 04:07:32,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 04:07:32,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-20 04:07:32,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 04:07:32,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-20 04:07:32,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 04:07:32,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-20 04:07:33,127 INFO L134 CoverageAnalysis]: Checked inductivity of 619 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 619 trivial. 0 not checked. [2023-12-20 04:07:33,127 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 04:07:33,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709356391] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 04:07:33,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 04:07:33,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2023-12-20 04:07:33,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488661251] [2023-12-20 04:07:33,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 04:07:33,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 04:07:33,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 04:07:33,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 04:07:33,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-20 04:07:33,131 INFO L87 Difference]: Start difference. First operand 105 states and 149 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-20 04:07:37,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:07:41,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:07:41,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 04:07:41,921 INFO L93 Difference]: Finished difference Result 376 states and 550 transitions. [2023-12-20 04:07:41,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 04:07:41,922 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 125 [2023-12-20 04:07:41,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 04:07:41,925 INFO L225 Difference]: With dead ends: 376 [2023-12-20 04:07:41,925 INFO L226 Difference]: Without dead ends: 206 [2023-12-20 04:07:41,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-12-20 04:07:41,926 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 219 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 12 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2023-12-20 04:07:41,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 676 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 191 Invalid, 2 Unknown, 0 Unchecked, 8.7s Time] [2023-12-20 04:07:41,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2023-12-20 04:07:41,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2023-12-20 04:07:41,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 133 states have (on average 1.3157894736842106) internal successors, (175), 133 states have internal predecessors, (175), 57 states have call successors, (57), 15 states have call predecessors, (57), 15 states have return successors, (66), 57 states have call predecessors, (66), 57 states have call successors, (66) [2023-12-20 04:07:41,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 298 transitions. [2023-12-20 04:07:41,964 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 298 transitions. Word has length 125 [2023-12-20 04:07:41,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 04:07:41,964 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 298 transitions. [2023-12-20 04:07:41,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-20 04:07:41,964 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 298 transitions. [2023-12-20 04:07:41,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-12-20 04:07:41,968 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 04:07:41,968 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 04:07:41,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 04:07:42,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-12-20 04:07:42,175 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 04:07:42,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 04:07:42,176 INFO L85 PathProgramCache]: Analyzing trace with hash 852698505, now seen corresponding path program 1 times [2023-12-20 04:07:42,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 04:07:42,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553056206] [2023-12-20 04:07:42,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 04:07:42,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 04:07:42,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:42,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 04:07:42,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:42,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:07:42,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:42,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:07:42,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:42,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 04:07:42,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:42,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 04:07:42,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:42,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:07:42,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:42,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 04:07:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:42,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-20 04:07:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:42,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:07:42,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:42,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 04:07:42,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:42,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 04:07:42,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:42,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:07:42,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:42,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-20 04:07:42,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:42,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 04:07:42,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:42,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-20 04:07:42,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:42,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-20 04:07:42,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:42,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-20 04:07:42,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:42,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-20 04:07:42,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:42,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-20 04:07:42,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:42,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-20 04:07:42,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:42,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-20 04:07:42,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:42,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-20 04:07:42,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:42,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-20 04:07:42,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:42,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-12-20 04:07:42,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:42,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-12-20 04:07:42,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:42,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-20 04:07:42,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:42,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-12-20 04:07:42,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:42,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-12-20 04:07:42,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:42,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-12-20 04:07:42,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:42,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-12-20 04:07:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:42,566 INFO L134 CoverageAnalysis]: Checked inductivity of 959 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 958 trivial. 0 not checked. [2023-12-20 04:07:42,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 04:07:42,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553056206] [2023-12-20 04:07:42,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553056206] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 04:07:42,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196519397] [2023-12-20 04:07:42,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 04:07:42,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 04:07:42,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 04:07:42,582 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) [2023-12-20 04:07:42,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 04:07:42,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:42,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 1336 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 04:07:43,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 04:07:43,025 INFO L134 CoverageAnalysis]: Checked inductivity of 959 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 958 trivial. 0 not checked. [2023-12-20 04:07:43,025 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 04:07:43,129 INFO L134 CoverageAnalysis]: Checked inductivity of 959 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 958 trivial. 0 not checked. [2023-12-20 04:07:43,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196519397] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 04:07:43,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 04:07:43,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 3, 4] total 10 [2023-12-20 04:07:43,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017896633] [2023-12-20 04:07:43,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 04:07:43,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-20 04:07:43,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 04:07:43,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-20 04:07:43,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-20 04:07:43,131 INFO L87 Difference]: Start difference. First operand 206 states and 298 transitions. Second operand has 10 states, 10 states have (on average 9.0) internal successors, (90), 6 states have internal predecessors, (90), 2 states have call successors, (62), 6 states have call predecessors, (62), 2 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2023-12-20 04:07:47,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:07:48,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 04:07:48,111 INFO L93 Difference]: Finished difference Result 428 states and 618 transitions. [2023-12-20 04:07:48,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 04:07:48,112 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 6 states have internal predecessors, (90), 2 states have call successors, (62), 6 states have call predecessors, (62), 2 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 189 [2023-12-20 04:07:48,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 04:07:48,113 INFO L225 Difference]: With dead ends: 428 [2023-12-20 04:07:48,113 INFO L226 Difference]: Without dead ends: 230 [2023-12-20 04:07:48,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 431 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-20 04:07:48,115 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 58 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 99 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-12-20 04:07:48,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 471 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 405 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2023-12-20 04:07:48,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2023-12-20 04:07:48,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 224. [2023-12-20 04:07:48,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 148 states have (on average 1.2972972972972974) internal successors, (192), 151 states have internal predecessors, (192), 57 states have call successors, (57), 15 states have call predecessors, (57), 18 states have return successors, (71), 57 states have call predecessors, (71), 57 states have call successors, (71) [2023-12-20 04:07:48,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 320 transitions. [2023-12-20 04:07:48,130 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 320 transitions. Word has length 189 [2023-12-20 04:07:48,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 04:07:48,130 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 320 transitions. [2023-12-20 04:07:48,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 6 states have internal predecessors, (90), 2 states have call successors, (62), 6 states have call predecessors, (62), 2 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2023-12-20 04:07:48,130 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 320 transitions. [2023-12-20 04:07:48,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-12-20 04:07:48,132 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 04:07:48,132 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 9, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 04:07:48,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 04:07:48,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 04:07:48,343 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 04:07:48,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 04:07:48,344 INFO L85 PathProgramCache]: Analyzing trace with hash 546297731, now seen corresponding path program 2 times [2023-12-20 04:07:48,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 04:07:48,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358008289] [2023-12-20 04:07:48,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 04:07:48,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 04:07:48,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:49,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-20 04:07:49,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:49,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:07:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:49,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:07:49,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:49,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 04:07:49,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:49,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 04:07:49,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:49,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:07:49,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:49,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 04:07:49,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:49,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-20 04:07:49,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:49,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:07:49,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:49,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 04:07:49,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:49,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 04:07:49,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:49,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:07:49,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:49,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-20 04:07:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:49,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-20 04:07:49,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:49,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-20 04:07:49,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:49,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-20 04:07:49,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:49,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-20 04:07:49,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:49,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-20 04:07:49,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:49,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-20 04:07:49,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:49,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-20 04:07:49,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:49,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-20 04:07:49,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:49,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-12-20 04:07:49,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:49,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-12-20 04:07:49,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:49,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-20 04:07:49,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:49,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-12-20 04:07:49,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:49,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-12-20 04:07:49,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:49,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-12-20 04:07:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:49,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-12-20 04:07:49,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:49,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-12-20 04:07:49,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:49,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-20 04:07:49,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:07:49,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2023-12-20 04:07:49,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 04:07:49,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358008289] [2023-12-20 04:07:49,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358008289] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 04:07:49,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 04:07:49,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 04:07:49,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793984308] [2023-12-20 04:07:49,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 04:07:49,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 04:07:49,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 04:07:49,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 04:07:49,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-20 04:07:49,208 INFO L87 Difference]: Start difference. First operand 224 states and 320 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (27), 5 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2023-12-20 04:07:53,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:07:57,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:08:01,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:08:05,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:08:09,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:08:13,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:08:14,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 04:08:14,248 INFO L93 Difference]: Finished difference Result 494 states and 706 transitions. [2023-12-20 04:08:14,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-20 04:08:14,248 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (27), 5 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 201 [2023-12-20 04:08:14,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 04:08:14,250 INFO L225 Difference]: With dead ends: 494 [2023-12-20 04:08:14,250 INFO L226 Difference]: Without dead ends: 311 [2023-12-20 04:08:14,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2023-12-20 04:08:14,252 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 179 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 124 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.8s IncrementalHoareTripleChecker+Time [2023-12-20 04:08:14,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 573 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 558 Invalid, 6 Unknown, 0 Unchecked, 24.8s Time] [2023-12-20 04:08:14,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2023-12-20 04:08:14,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 303. [2023-12-20 04:08:14,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 193 states have (on average 1.2590673575129534) internal successors, (243), 198 states have internal predecessors, (243), 85 states have call successors, (85), 20 states have call predecessors, (85), 24 states have return successors, (104), 84 states have call predecessors, (104), 85 states have call successors, (104) [2023-12-20 04:08:14,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 432 transitions. [2023-12-20 04:08:14,273 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 432 transitions. Word has length 201 [2023-12-20 04:08:14,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 04:08:14,273 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 432 transitions. [2023-12-20 04:08:14,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (27), 5 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2023-12-20 04:08:14,274 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 432 transitions. [2023-12-20 04:08:14,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-12-20 04:08:14,276 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 04:08:14,276 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 9, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 04:08:14,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 04:08:14,276 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 04:08:14,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 04:08:14,276 INFO L85 PathProgramCache]: Analyzing trace with hash 567442243, now seen corresponding path program 1 times [2023-12-20 04:08:14,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 04:08:14,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350760708] [2023-12-20 04:08:14,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 04:08:14,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 04:08:14,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:14,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 04:08:14,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:14,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:08:14,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:14,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:08:14,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:14,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 04:08:14,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:14,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 04:08:14,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:14,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:08:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:14,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 04:08:14,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:15,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-20 04:08:15,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:15,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:08:15,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:15,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 04:08:15,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:15,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 04:08:15,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:15,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:08:15,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:15,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-20 04:08:15,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:15,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-20 04:08:15,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:15,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-20 04:08:15,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:15,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-20 04:08:15,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:15,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-20 04:08:15,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:15,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-20 04:08:15,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:15,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-20 04:08:15,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:15,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-20 04:08:15,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:15,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-20 04:08:15,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:15,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-12-20 04:08:15,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:15,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-12-20 04:08:15,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:15,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-20 04:08:15,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:15,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-12-20 04:08:15,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:15,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-12-20 04:08:15,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:15,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-12-20 04:08:15,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:15,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-12-20 04:08:15,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:15,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-12-20 04:08:15,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:15,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-20 04:08:15,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:15,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2023-12-20 04:08:15,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 04:08:15,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350760708] [2023-12-20 04:08:15,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350760708] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 04:08:15,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110044658] [2023-12-20 04:08:15,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 04:08:15,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 04:08:15,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 04:08:15,098 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) [2023-12-20 04:08:15,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 04:08:15,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:15,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 1594 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-20 04:08:15,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 04:08:15,678 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 [2023-12-20 04:08:16,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 292 proven. 14 refuted. 0 times theorem prover too weak. 721 trivial. 0 not checked. [2023-12-20 04:08:16,211 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 04:08:16,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 1011 trivial. 0 not checked. [2023-12-20 04:08:16,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110044658] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 04:08:16,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 04:08:16,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 11] total 34 [2023-12-20 04:08:16,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238277836] [2023-12-20 04:08:16,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 04:08:16,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-20 04:08:16,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 04:08:16,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-20 04:08:16,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=910, Unknown=0, NotChecked=0, Total=1122 [2023-12-20 04:08:16,887 INFO L87 Difference]: Start difference. First operand 303 states and 432 transitions. Second operand has 34 states, 30 states have (on average 3.8666666666666667) internal successors, (116), 26 states have internal predecessors, (116), 19 states have call successors, (64), 13 states have call predecessors, (64), 13 states have return successors, (64), 16 states have call predecessors, (64), 19 states have call successors, (64) [2023-12-20 04:08:20,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:08:25,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:08:29,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:08:33,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:08:37,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:08:41,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:08:45,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 04:08:45,769 INFO L93 Difference]: Finished difference Result 771 states and 1111 transitions. [2023-12-20 04:08:45,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-20 04:08:45,770 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 30 states have (on average 3.8666666666666667) internal successors, (116), 26 states have internal predecessors, (116), 19 states have call successors, (64), 13 states have call predecessors, (64), 13 states have return successors, (64), 16 states have call predecessors, (64), 19 states have call successors, (64) Word has length 201 [2023-12-20 04:08:45,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 04:08:45,772 INFO L225 Difference]: With dead ends: 771 [2023-12-20 04:08:45,772 INFO L226 Difference]: Without dead ends: 495 [2023-12-20 04:08:45,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1632 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1197, Invalid=4655, Unknown=0, NotChecked=0, Total=5852 [2023-12-20 04:08:45,775 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 925 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 2127 mSolverCounterSat, 1051 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 3184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1051 IncrementalHoareTripleChecker+Valid, 2127 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.4s IncrementalHoareTripleChecker+Time [2023-12-20 04:08:45,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [945 Valid, 1059 Invalid, 3184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1051 Valid, 2127 Invalid, 6 Unknown, 0 Unchecked, 26.4s Time] [2023-12-20 04:08:45,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2023-12-20 04:08:45,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 358. [2023-12-20 04:08:45,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 231 states have (on average 1.2467532467532467) internal successors, (288), 236 states have internal predecessors, (288), 87 states have call successors, (87), 36 states have call predecessors, (87), 39 states have return successors, (116), 85 states have call predecessors, (116), 87 states have call successors, (116) [2023-12-20 04:08:45,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 491 transitions. [2023-12-20 04:08:45,823 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 491 transitions. Word has length 201 [2023-12-20 04:08:45,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 04:08:45,824 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 491 transitions. [2023-12-20 04:08:45,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 30 states have (on average 3.8666666666666667) internal successors, (116), 26 states have internal predecessors, (116), 19 states have call successors, (64), 13 states have call predecessors, (64), 13 states have return successors, (64), 16 states have call predecessors, (64), 19 states have call successors, (64) [2023-12-20 04:08:45,824 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 491 transitions. [2023-12-20 04:08:45,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-12-20 04:08:45,826 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 04:08:45,826 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 9, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 04:08:45,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 04:08:46,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 04:08:46,035 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 04:08:46,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 04:08:46,035 INFO L85 PathProgramCache]: Analyzing trace with hash -201251771, now seen corresponding path program 1 times [2023-12-20 04:08:46,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 04:08:46,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270385088] [2023-12-20 04:08:46,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 04:08:46,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 04:08:46,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:47,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 04:08:47,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:47,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:08:47,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:47,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:08:47,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:47,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 04:08:47,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:47,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 04:08:47,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:47,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:08:47,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:47,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 04:08:47,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:48,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-20 04:08:48,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:48,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:08:48,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:48,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 04:08:48,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:48,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 04:08:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:48,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:08:48,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:48,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-20 04:08:48,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:48,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-20 04:08:48,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:48,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-20 04:08:48,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:48,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-20 04:08:48,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:48,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-20 04:08:48,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:48,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-20 04:08:48,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:48,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-20 04:08:48,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:48,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-20 04:08:48,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:48,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-20 04:08:48,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:48,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-12-20 04:08:48,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:48,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-12-20 04:08:48,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:48,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-20 04:08:48,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:48,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-12-20 04:08:48,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:48,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-12-20 04:08:48,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:48,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-12-20 04:08:48,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:48,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-12-20 04:08:48,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:48,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-12-20 04:08:48,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:48,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-20 04:08:48,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:48,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2023-12-20 04:08:48,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 04:08:48,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270385088] [2023-12-20 04:08:48,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270385088] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 04:08:48,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502860818] [2023-12-20 04:08:48,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 04:08:48,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 04:08:48,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 04:08:48,202 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) [2023-12-20 04:08:48,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 04:08:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:08:48,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 1680 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-20 04:08:48,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 04:08:48,915 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 13 treesize of output 9 [2023-12-20 04:08:53,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-20 04:08:53,411 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 04:08:53,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 48 [2023-12-20 04:08:55,171 INFO L349 Elim1Store]: treesize reduction 64, result has 54.9 percent of original size [2023-12-20 04:08:55,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 104 [2023-12-20 04:09:24,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 328 proven. 4 refuted. 0 times theorem prover too weak. 695 trivial. 0 not checked. [2023-12-20 04:09:24,176 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 04:09:24,341 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 25 treesize of output 23 [2023-12-20 04:09:24,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 35 treesize of output 31 [2023-12-20 04:09:24,671 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 20 treesize of output 18 [2023-12-20 04:09:24,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 26 treesize of output 22 [2023-12-20 04:09:24,722 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 20 treesize of output 18 [2023-12-20 04:09:24,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 26 treesize of output 22 [2023-12-20 04:09:24,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1023 trivial. 0 not checked. [2023-12-20 04:09:24,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502860818] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 04:09:24,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 04:09:24,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 9] total 39 [2023-12-20 04:09:24,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492361026] [2023-12-20 04:09:24,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 04:09:24,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-20 04:09:24,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 04:09:24,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-20 04:09:24,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1336, Unknown=5, NotChecked=0, Total=1482 [2023-12-20 04:09:24,794 INFO L87 Difference]: Start difference. First operand 358 states and 491 transitions. Second operand has 39 states, 36 states have (on average 3.638888888888889) internal successors, (131), 35 states have internal predecessors, (131), 19 states have call successors, (64), 13 states have call predecessors, (64), 14 states have return successors, (64), 17 states have call predecessors, (64), 19 states have call successors, (64) [2023-12-20 04:09:28,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:09:33,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:09:34,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:09:38,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:09:42,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:09:46,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:09:50,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:09:54,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:09:58,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:10:02,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:10:06,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:10:10,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:10:14,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:10:18,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:10:22,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:10:26,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:10:30,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:10:34,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:10:38,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:10:42,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:10:47,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:10:51,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:10:54,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:10:58,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:11:02,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:11:09,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 04:11:09,074 INFO L93 Difference]: Finished difference Result 728 states and 1056 transitions. [2023-12-20 04:11:09,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-20 04:11:09,075 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 36 states have (on average 3.638888888888889) internal successors, (131), 35 states have internal predecessors, (131), 19 states have call successors, (64), 13 states have call predecessors, (64), 14 states have return successors, (64), 17 states have call predecessors, (64), 19 states have call successors, (64) Word has length 201 [2023-12-20 04:11:09,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 04:11:09,077 INFO L225 Difference]: With dead ends: 728 [2023-12-20 04:11:09,077 INFO L226 Difference]: Without dead ends: 429 [2023-12-20 04:11:09,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 434 SyntacticMatches, 7 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1159 ImplicationChecksByTransitivity, 38.1s TimeCoverageRelationStatistics Valid=858, Invalid=4687, Unknown=5, NotChecked=0, Total=5550 [2023-12-20 04:11:09,079 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 624 mSDsluCounter, 1328 mSDsCounter, 0 mSdLazyCounter, 3528 mSolverCounterSat, 630 mSolverCounterUnsat, 23 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 100.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 1427 SdHoareTripleChecker+Invalid, 4181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 630 IncrementalHoareTripleChecker+Valid, 3528 IncrementalHoareTripleChecker+Invalid, 23 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 101.0s IncrementalHoareTripleChecker+Time [2023-12-20 04:11:09,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 1427 Invalid, 4181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [630 Valid, 3528 Invalid, 23 Unknown, 0 Unchecked, 101.0s Time] [2023-12-20 04:11:09,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2023-12-20 04:11:09,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 392. [2023-12-20 04:11:09,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 249 states have (on average 1.2449799196787148) internal successors, (310), 255 states have internal predecessors, (310), 100 states have call successors, (100), 36 states have call predecessors, (100), 42 states have return successors, (152), 100 states have call predecessors, (152), 100 states have call successors, (152) [2023-12-20 04:11:09,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 562 transitions. [2023-12-20 04:11:09,138 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 562 transitions. Word has length 201 [2023-12-20 04:11:09,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 04:11:09,138 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 562 transitions. [2023-12-20 04:11:09,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 36 states have (on average 3.638888888888889) internal successors, (131), 35 states have internal predecessors, (131), 19 states have call successors, (64), 13 states have call predecessors, (64), 14 states have return successors, (64), 17 states have call predecessors, (64), 19 states have call successors, (64) [2023-12-20 04:11:09,139 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 562 transitions. [2023-12-20 04:11:09,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2023-12-20 04:11:09,143 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 04:11:09,143 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 9, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2023-12-20 04:11:09,152 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-20 04:11:09,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 04:11:09,352 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 04:11:09,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 04:11:09,352 INFO L85 PathProgramCache]: Analyzing trace with hash 2051977008, now seen corresponding path program 1 times [2023-12-20 04:11:09,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 04:11:09,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246288540] [2023-12-20 04:11:09,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 04:11:09,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 04:11:09,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:10,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 04:11:10,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:10,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:11:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:10,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:11:10,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:10,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 04:11:10,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:10,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 04:11:10,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:10,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:11:10,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:10,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-20 04:11:10,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:10,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:11:10,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:10,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:11:10,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:10,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-20 04:11:11,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:11,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:11:11,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:11,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:11:11,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:11,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 04:11:11,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:11,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 04:11:11,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:11,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:11:11,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:11,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 04:11:11,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:11,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-20 04:11:11,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:11,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:11:11,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:11,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 04:11:11,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:11,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 04:11:11,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:11,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:11:11,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:11,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-20 04:11:11,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:11,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-12-20 04:11:11,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:11,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-12-20 04:11:11,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:11,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-20 04:11:11,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:11,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-12-20 04:11:11,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:11,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-12-20 04:11:11,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:11,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-12-20 04:11:11,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:11,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-12-20 04:11:11,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:11,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-12-20 04:11:11,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:11,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-20 04:11:11,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:11,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-12-20 04:11:11,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:11,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2023-12-20 04:11:11,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:11,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-12-20 04:11:11,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:11,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-12-20 04:11:11,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:11,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2023-12-20 04:11:11,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:11,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-12-20 04:11:11,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:11,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2023-12-20 04:11:11,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:11,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-12-20 04:11:11,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:11,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1390 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1368 trivial. 0 not checked. [2023-12-20 04:11:11,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 04:11:11,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246288540] [2023-12-20 04:11:11,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246288540] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 04:11:11,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844050332] [2023-12-20 04:11:11,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 04:11:11,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 04:11:11,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 04:11:11,114 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) [2023-12-20 04:11:11,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 04:11:11,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:11,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 2142 conjuncts, 64 conjunts are in the unsatisfiable core [2023-12-20 04:11:11,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 04:11:11,978 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-12-20 04:11:12,040 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 04:11:12,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2023-12-20 04:11:12,204 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 19 treesize of output 1 [2023-12-20 04:11:12,369 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 04:11:12,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-12-20 04:11:12,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1390 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 1140 trivial. 0 not checked. [2023-12-20 04:11:12,423 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 04:11:12,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844050332] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 04:11:12,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 04:11:12,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [14] total 26 [2023-12-20 04:11:12,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38043233] [2023-12-20 04:11:12,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 04:11:12,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-20 04:11:12,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 04:11:12,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-20 04:11:12,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=546, Unknown=0, NotChecked=0, Total=650 [2023-12-20 04:11:12,425 INFO L87 Difference]: Start difference. First operand 392 states and 562 transitions. Second operand has 14 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 7 states have call successors, (34), 5 states have call predecessors, (34), 5 states have return successors, (34), 7 states have call predecessors, (34), 7 states have call successors, (34) [2023-12-20 04:11:16,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:11:20,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:11:24,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:11:28,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:11:32,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:11:36,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:11:39,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:11:43,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:11:45,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 04:11:45,821 INFO L93 Difference]: Finished difference Result 902 states and 1287 transitions. [2023-12-20 04:11:45,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-20 04:11:45,821 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 7 states have call successors, (34), 5 states have call predecessors, (34), 5 states have return successors, (34), 7 states have call predecessors, (34), 7 states have call successors, (34) Word has length 249 [2023-12-20 04:11:45,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 04:11:45,824 INFO L225 Difference]: With dead ends: 902 [2023-12-20 04:11:45,824 INFO L226 Difference]: Without dead ends: 567 [2023-12-20 04:11:45,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 579 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=379, Invalid=1783, Unknown=0, NotChecked=0, Total=2162 [2023-12-20 04:11:45,826 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 322 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 1752 mSolverCounterSat, 267 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 2026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 1752 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.8s IncrementalHoareTripleChecker+Time [2023-12-20 04:11:45,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 554 Invalid, 2026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 1752 Invalid, 7 Unknown, 0 Unchecked, 32.8s Time] [2023-12-20 04:11:45,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2023-12-20 04:11:45,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 523. [2023-12-20 04:11:45,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 333 states have (on average 1.2432432432432432) internal successors, (414), 340 states have internal predecessors, (414), 135 states have call successors, (135), 50 states have call predecessors, (135), 54 states have return successors, (201), 132 states have call predecessors, (201), 135 states have call successors, (201) [2023-12-20 04:11:45,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 750 transitions. [2023-12-20 04:11:45,882 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 750 transitions. Word has length 249 [2023-12-20 04:11:45,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 04:11:45,883 INFO L495 AbstractCegarLoop]: Abstraction has 523 states and 750 transitions. [2023-12-20 04:11:45,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 7 states have call successors, (34), 5 states have call predecessors, (34), 5 states have return successors, (34), 7 states have call predecessors, (34), 7 states have call successors, (34) [2023-12-20 04:11:45,883 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 750 transitions. [2023-12-20 04:11:45,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2023-12-20 04:11:45,886 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 04:11:45,886 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 9, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2023-12-20 04:11:45,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-20 04:11:46,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 04:11:46,097 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 04:11:46,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 04:11:46,097 INFO L85 PathProgramCache]: Analyzing trace with hash 56674286, now seen corresponding path program 1 times [2023-12-20 04:11:46,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 04:11:46,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41477669] [2023-12-20 04:11:46,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 04:11:46,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 04:11:46,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:47,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 04:11:47,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:47,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:11:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:47,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:11:47,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:47,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 04:11:47,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:47,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 04:11:47,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:47,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:11:47,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:47,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-20 04:11:47,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:47,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:11:47,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:47,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:11:47,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:47,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-20 04:11:47,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:47,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:11:47,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:47,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:11:47,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:47,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 04:11:47,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:47,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 04:11:47,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:47,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:11:47,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:47,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 04:11:47,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:47,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-20 04:11:47,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:47,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:11:47,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:47,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 04:11:47,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:47,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 04:11:47,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:47,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:11:47,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:47,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-20 04:11:47,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:47,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-12-20 04:11:47,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:47,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-12-20 04:11:47,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:47,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-20 04:11:47,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:47,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-12-20 04:11:47,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:47,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-12-20 04:11:47,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:47,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-12-20 04:11:47,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:47,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-12-20 04:11:47,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:47,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-12-20 04:11:47,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:47,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-20 04:11:47,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:47,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-12-20 04:11:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:47,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2023-12-20 04:11:47,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:47,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-12-20 04:11:47,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:47,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-12-20 04:11:47,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:47,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2023-12-20 04:11:47,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:47,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-12-20 04:11:47,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:47,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2023-12-20 04:11:47,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:47,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-12-20 04:11:47,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:47,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1390 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1368 trivial. 0 not checked. [2023-12-20 04:11:47,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 04:11:47,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41477669] [2023-12-20 04:11:47,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41477669] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 04:11:47,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437155946] [2023-12-20 04:11:47,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 04:11:47,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 04:11:47,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 04:11:47,774 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) [2023-12-20 04:11:47,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 04:11:48,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:11:48,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 2131 conjuncts, 63 conjunts are in the unsatisfiable core [2023-12-20 04:11:48,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 04:11:48,735 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-20 04:11:48,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-20 04:11:48,807 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 [2023-12-20 04:11:48,950 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 19 treesize of output 1 [2023-12-20 04:11:48,982 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-20 04:11:49,038 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 [2023-12-20 04:11:49,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1390 backedges. 334 proven. 4 refuted. 0 times theorem prover too weak. 1052 trivial. 0 not checked. [2023-12-20 04:11:49,096 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 04:11:49,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437155946] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 04:11:49,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 04:11:49,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 23 [2023-12-20 04:11:49,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134214329] [2023-12-20 04:11:49,573 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 04:11:49,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-20 04:11:49,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 04:11:49,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-20 04:11:49,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=731, Unknown=0, NotChecked=0, Total=870 [2023-12-20 04:11:49,574 INFO L87 Difference]: Start difference. First operand 523 states and 750 transitions. Second operand has 23 states, 22 states have (on average 5.545454545454546) internal successors, (122), 19 states have internal predecessors, (122), 13 states have call successors, (67), 9 states have call predecessors, (67), 8 states have return successors, (67), 11 states have call predecessors, (67), 13 states have call successors, (67) [2023-12-20 04:11:51,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:11:55,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:11:58,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:12:02,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:12:06,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:12:10,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:12:13,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:12:17,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:12:21,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:12:25,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:12:29,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:12:33,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:12:35,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 04:12:35,281 INFO L93 Difference]: Finished difference Result 726 states and 1042 transitions. [2023-12-20 04:12:35,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-20 04:12:35,282 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 5.545454545454546) internal successors, (122), 19 states have internal predecessors, (122), 13 states have call successors, (67), 9 states have call predecessors, (67), 8 states have return successors, (67), 11 states have call predecessors, (67), 13 states have call successors, (67) Word has length 249 [2023-12-20 04:12:35,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 04:12:35,284 INFO L225 Difference]: With dead ends: 726 [2023-12-20 04:12:35,284 INFO L226 Difference]: Without dead ends: 536 [2023-12-20 04:12:35,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 559 GetRequests, 513 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=468, Invalid=1788, Unknown=0, NotChecked=0, Total=2256 [2023-12-20 04:12:35,285 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 337 mSDsluCounter, 880 mSDsCounter, 0 mSdLazyCounter, 1566 mSolverCounterSat, 281 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 1027 SdHoareTripleChecker+Invalid, 1856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 1566 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.9s IncrementalHoareTripleChecker+Time [2023-12-20 04:12:35,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 1027 Invalid, 1856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 1566 Invalid, 9 Unknown, 0 Unchecked, 44.9s Time] [2023-12-20 04:12:35,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2023-12-20 04:12:35,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 516. [2023-12-20 04:12:35,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 328 states have (on average 1.2408536585365855) internal successors, (407), 334 states have internal predecessors, (407), 134 states have call successors, (134), 50 states have call predecessors, (134), 53 states have return successors, (198), 131 states have call predecessors, (198), 134 states have call successors, (198) [2023-12-20 04:12:35,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 739 transitions. [2023-12-20 04:12:35,342 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 739 transitions. Word has length 249 [2023-12-20 04:12:35,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 04:12:35,342 INFO L495 AbstractCegarLoop]: Abstraction has 516 states and 739 transitions. [2023-12-20 04:12:35,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 5.545454545454546) internal successors, (122), 19 states have internal predecessors, (122), 13 states have call successors, (67), 9 states have call predecessors, (67), 8 states have return successors, (67), 11 states have call predecessors, (67), 13 states have call successors, (67) [2023-12-20 04:12:35,342 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 739 transitions. [2023-12-20 04:12:35,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-12-20 04:12:35,345 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 04:12:35,345 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 9, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2023-12-20 04:12:35,373 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-20 04:12:35,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 04:12:35,558 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 04:12:35,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 04:12:35,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1281350682, now seen corresponding path program 1 times [2023-12-20 04:12:35,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 04:12:35,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214662006] [2023-12-20 04:12:35,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 04:12:35,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 04:12:35,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:35,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 04:12:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:35,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:12:35,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:35,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:12:35,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:35,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 04:12:35,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:35,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 04:12:35,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:35,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:12:35,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:35,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-20 04:12:35,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:35,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:12:35,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:35,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:12:35,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:35,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 04:12:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:35,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 04:12:35,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:35,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:12:35,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:35,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 04:12:35,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:35,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-20 04:12:35,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:35,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:12:35,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:35,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 04:12:35,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:35,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 04:12:35,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:35,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:12:35,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:35,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-20 04:12:35,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:35,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-20 04:12:35,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:35,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-20 04:12:35,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:35,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-20 04:12:35,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:35,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-12-20 04:12:35,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:35,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-12-20 04:12:35,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:35,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-20 04:12:35,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:35,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-12-20 04:12:35,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:35,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-12-20 04:12:35,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:35,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-12-20 04:12:35,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:35,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2023-12-20 04:12:35,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:35,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2023-12-20 04:12:35,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:35,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2023-12-20 04:12:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:35,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-12-20 04:12:35,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:35,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2023-12-20 04:12:35,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:36,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2023-12-20 04:12:36,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:36,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2023-12-20 04:12:36,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:36,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2023-12-20 04:12:36,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:36,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1258 trivial. 0 not checked. [2023-12-20 04:12:36,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 04:12:36,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214662006] [2023-12-20 04:12:36,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214662006] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 04:12:36,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 04:12:36,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 04:12:36,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639804714] [2023-12-20 04:12:36,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 04:12:36,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 04:12:36,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 04:12:36,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 04:12:36,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-20 04:12:36,013 INFO L87 Difference]: Start difference. First operand 516 states and 739 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (28), 5 states have call predecessors, (28), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-12-20 04:12:40,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:12:41,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 04:12:41,492 INFO L93 Difference]: Finished difference Result 980 states and 1476 transitions. [2023-12-20 04:12:41,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 04:12:41,493 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (28), 5 states have call predecessors, (28), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 236 [2023-12-20 04:12:41,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 04:12:41,497 INFO L225 Difference]: With dead ends: 980 [2023-12-20 04:12:41,497 INFO L226 Difference]: Without dead ends: 528 [2023-12-20 04:12:41,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-20 04:12:41,499 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 44 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 62 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-12-20 04:12:41,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 309 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 269 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2023-12-20 04:12:41,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2023-12-20 04:12:41,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 520. [2023-12-20 04:12:41,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 332 states have (on average 1.2379518072289157) internal successors, (411), 338 states have internal predecessors, (411), 134 states have call successors, (134), 50 states have call predecessors, (134), 53 states have return successors, (198), 131 states have call predecessors, (198), 134 states have call successors, (198) [2023-12-20 04:12:41,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 743 transitions. [2023-12-20 04:12:41,554 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 743 transitions. Word has length 236 [2023-12-20 04:12:41,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 04:12:41,555 INFO L495 AbstractCegarLoop]: Abstraction has 520 states and 743 transitions. [2023-12-20 04:12:41,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (28), 5 states have call predecessors, (28), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-12-20 04:12:41,555 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 743 transitions. [2023-12-20 04:12:41,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-12-20 04:12:41,557 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 04:12:41,558 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 9, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2023-12-20 04:12:41,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 04:12:41,558 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 04:12:41,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 04:12:41,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1644817180, now seen corresponding path program 1 times [2023-12-20 04:12:41,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 04:12:41,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079747826] [2023-12-20 04:12:41,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 04:12:41,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 04:12:42,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:42,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 04:12:42,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:42,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:12:42,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:42,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:12:42,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:42,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 04:12:42,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:43,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 04:12:43,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:43,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:12:43,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:43,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-20 04:12:43,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:43,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:12:43,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:43,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:12:43,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:43,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 04:12:43,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:43,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 04:12:43,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:43,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:12:43,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:43,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 04:12:43,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:43,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-20 04:12:43,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:43,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:12:43,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:43,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 04:12:43,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:43,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 04:12:43,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:43,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:12:43,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:43,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-20 04:12:43,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:43,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-20 04:12:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:43,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-20 04:12:43,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:43,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-20 04:12:43,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:43,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-12-20 04:12:43,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:43,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-12-20 04:12:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:43,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-20 04:12:43,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:43,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-12-20 04:12:43,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:43,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-12-20 04:12:43,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:43,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-12-20 04:12:43,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:43,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2023-12-20 04:12:43,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:43,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2023-12-20 04:12:43,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:43,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2023-12-20 04:12:43,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:43,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-12-20 04:12:43,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:43,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2023-12-20 04:12:43,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:43,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2023-12-20 04:12:43,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:43,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2023-12-20 04:12:43,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:43,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2023-12-20 04:12:43,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:43,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1249 trivial. 0 not checked. [2023-12-20 04:12:43,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 04:12:43,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079747826] [2023-12-20 04:12:43,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079747826] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 04:12:43,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656908985] [2023-12-20 04:12:43,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 04:12:43,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 04:12:43,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 04:12:43,391 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) [2023-12-20 04:12:43,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 04:12:46,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:12:46,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 1987 conjuncts, 80 conjunts are in the unsatisfiable core [2023-12-20 04:12:46,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 04:12:46,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2023-12-20 04:12:46,458 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 [2023-12-20 04:12:46,718 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-12-20 04:12:48,041 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 17 treesize of output 9 [2023-12-20 04:12:48,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 504 proven. 31 refuted. 0 times theorem prover too weak. 725 trivial. 0 not checked. [2023-12-20 04:12:48,293 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 04:12:50,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 20 proven. 21 refuted. 0 times theorem prover too weak. 1219 trivial. 0 not checked. [2023-12-20 04:12:50,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656908985] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 04:12:50,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 04:12:50,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 23, 17] total 52 [2023-12-20 04:12:50,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664454269] [2023-12-20 04:12:50,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 04:12:50,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-20 04:12:50,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 04:12:50,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-20 04:12:50,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=2368, Unknown=1, NotChecked=0, Total=2652 [2023-12-20 04:12:50,241 INFO L87 Difference]: Start difference. First operand 520 states and 743 transitions. Second operand has 52 states, 48 states have (on average 3.4375) internal successors, (165), 47 states have internal predecessors, (165), 30 states have call successors, (76), 16 states have call predecessors, (76), 22 states have return successors, (77), 28 states have call predecessors, (77), 30 states have call successors, (77) [2023-12-20 04:12:54,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:12:58,426 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:13:02,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:13:06,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:13:10,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:13:14,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:13:18,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:13:22,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:13:26,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:13:30,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:13:34,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:13:38,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:13:42,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:13:46,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:13:50,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:13:54,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:13:58,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:14:02,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:14:06,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:14:10,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:14:14,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:14:18,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:14:22,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:14:26,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:14:30,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:14:34,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:14:39,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:14:49,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:14:51,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:15:00,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:15:07,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:15:10,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:15:14,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:15:20,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:15:22,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:15:24,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:15:29,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:15:33,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:15:40,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:15:44,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:15:48,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:15:49,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:15:51,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:15:54,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:15:58,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:16:02,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:16:05,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.63s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:16:07,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:16:12,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:16:14,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:16:18,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:16:22,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.94s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:16:28,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:16:32,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:16:34,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:16:36,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:16:38,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:16:43,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:16:44,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:16:46,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:16:48,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:16:51,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:16:52,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:16:54,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:16:58,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:17:00,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:17:04,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.60s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:17:05,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:17:07,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:17:09,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:17:11,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:17:14,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:17:15,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:17:17,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:17:18,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:17:20,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:17:22,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:17:24,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:17:25,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 04:17:30,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 04:17:30,659 INFO L93 Difference]: Finished difference Result 2762 states and 3990 transitions. [2023-12-20 04:17:30,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2023-12-20 04:17:30,659 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 48 states have (on average 3.4375) internal successors, (165), 47 states have internal predecessors, (165), 30 states have call successors, (76), 16 states have call predecessors, (76), 22 states have return successors, (77), 28 states have call predecessors, (77), 30 states have call successors, (77) Word has length 236 [2023-12-20 04:17:30,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 04:17:30,668 INFO L225 Difference]: With dead ends: 2762 [2023-12-20 04:17:30,668 INFO L226 Difference]: Without dead ends: 2237 [2023-12-20 04:17:30,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 761 GetRequests, 535 SyntacticMatches, 4 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17962 ImplicationChecksByTransitivity, 32.3s TimeCoverageRelationStatistics Valid=5004, Invalid=44933, Unknown=15, NotChecked=0, Total=49952 [2023-12-20 04:17:30,680 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 3816 mSDsluCounter, 5546 mSDsCounter, 0 mSdLazyCounter, 15529 mSolverCounterSat, 4793 mSolverCounterUnsat, 151 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 247.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3852 SdHoareTripleChecker+Valid, 5982 SdHoareTripleChecker+Invalid, 20473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4793 IncrementalHoareTripleChecker+Valid, 15529 IncrementalHoareTripleChecker+Invalid, 151 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 249.6s IncrementalHoareTripleChecker+Time [2023-12-20 04:17:30,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3852 Valid, 5982 Invalid, 20473 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4793 Valid, 15529 Invalid, 151 Unknown, 0 Unchecked, 249.6s Time] [2023-12-20 04:17:30,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2237 states. [2023-12-20 04:17:30,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2237 to 960. [2023-12-20 04:17:30,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 613 states have (on average 1.168026101141925) internal successors, (716), 611 states have internal predecessors, (716), 227 states have call successors, (227), 92 states have call predecessors, (227), 119 states have return successors, (375), 256 states have call predecessors, (375), 227 states have call successors, (375) [2023-12-20 04:17:30,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1318 transitions. [2023-12-20 04:17:30,849 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1318 transitions. Word has length 236 [2023-12-20 04:17:30,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 04:17:30,849 INFO L495 AbstractCegarLoop]: Abstraction has 960 states and 1318 transitions. [2023-12-20 04:17:30,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 48 states have (on average 3.4375) internal successors, (165), 47 states have internal predecessors, (165), 30 states have call successors, (76), 16 states have call predecessors, (76), 22 states have return successors, (77), 28 states have call predecessors, (77), 30 states have call successors, (77) [2023-12-20 04:17:30,850 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1318 transitions. [2023-12-20 04:17:30,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2023-12-20 04:17:30,855 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 04:17:30,855 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 9, 5, 5, 5, 5, 3, 3, 3, 2, 2, 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] [2023-12-20 04:17:30,881 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-20 04:17:31,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-20 04:17:31,072 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 04:17:31,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 04:17:31,073 INFO L85 PathProgramCache]: Analyzing trace with hash 217505263, now seen corresponding path program 1 times [2023-12-20 04:17:31,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 04:17:31,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972996178] [2023-12-20 04:17:31,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 04:17:31,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 04:17:31,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:32,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 04:17:32,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:32,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:17:32,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:32,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:17:32,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:32,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 04:17:32,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:32,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 04:17:32,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:32,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:17:32,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:32,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 04:17:32,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:32,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-20 04:17:32,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:32,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:17:32,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:32,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 04:17:32,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:32,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 04:17:32,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:32,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:17:32,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:32,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-20 04:17:32,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:32,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:17:32,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:32,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:17:32,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:32,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-20 04:17:32,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:32,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-20 04:17:32,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:32,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-20 04:17:32,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:32,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 04:17:32,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:32,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-20 04:17:32,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:32,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-20 04:17:32,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:32,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-20 04:17:32,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:32,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-20 04:17:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:32,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-20 04:17:32,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:32,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-12-20 04:17:32,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:32,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2023-12-20 04:17:32,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:32,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-12-20 04:17:32,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:32,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2023-12-20 04:17:32,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:32,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2023-12-20 04:17:32,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:32,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2023-12-20 04:17:32,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:32,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-12-20 04:17:32,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:32,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-12-20 04:17:32,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:32,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2023-12-20 04:17:32,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:32,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1120 trivial. 0 not checked. [2023-12-20 04:17:32,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 04:17:32,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972996178] [2023-12-20 04:17:32,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972996178] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 04:17:32,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 04:17:32,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-20 04:17:32,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131935707] [2023-12-20 04:17:32,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 04:17:32,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-20 04:17:32,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 04:17:32,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-20 04:17:32,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-12-20 04:17:32,760 INFO L87 Difference]: Start difference. First operand 960 states and 1318 transitions. Second operand has 13 states, 11 states have (on average 5.909090909090909) internal successors, (65), 8 states have internal predecessors, (65), 5 states have call successors, (30), 5 states have call predecessors, (30), 3 states have return successors, (30), 6 states have call predecessors, (30), 5 states have call successors, (30) [2023-12-20 04:17:36,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:17:38,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 04:17:38,499 INFO L93 Difference]: Finished difference Result 1824 states and 2462 transitions. [2023-12-20 04:17:38,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-20 04:17:38,500 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 5.909090909090909) internal successors, (65), 8 states have internal predecessors, (65), 5 states have call successors, (30), 5 states have call predecessors, (30), 3 states have return successors, (30), 6 states have call predecessors, (30), 5 states have call successors, (30) Word has length 220 [2023-12-20 04:17:38,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 04:17:38,504 INFO L225 Difference]: With dead ends: 1824 [2023-12-20 04:17:38,504 INFO L226 Difference]: Without dead ends: 1195 [2023-12-20 04:17:38,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=203, Invalid=447, Unknown=0, NotChecked=0, Total=650 [2023-12-20 04:17:38,506 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 334 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 264 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 1203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-12-20 04:17:38,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 572 Invalid, 1203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 938 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2023-12-20 04:17:38,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2023-12-20 04:17:38,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 807. [2023-12-20 04:17:38,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 522 states have (on average 1.1781609195402298) internal successors, (615), 521 states have internal predecessors, (615), 168 states have call successors, (168), 88 states have call predecessors, (168), 116 states have return successors, (291), 197 states have call predecessors, (291), 168 states have call successors, (291) [2023-12-20 04:17:38,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1074 transitions. [2023-12-20 04:17:38,628 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1074 transitions. Word has length 220 [2023-12-20 04:17:38,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 04:17:38,629 INFO L495 AbstractCegarLoop]: Abstraction has 807 states and 1074 transitions. [2023-12-20 04:17:38,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 5.909090909090909) internal successors, (65), 8 states have internal predecessors, (65), 5 states have call successors, (30), 5 states have call predecessors, (30), 3 states have return successors, (30), 6 states have call predecessors, (30), 5 states have call successors, (30) [2023-12-20 04:17:38,629 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1074 transitions. [2023-12-20 04:17:38,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2023-12-20 04:17:38,632 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 04:17:38,632 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 9, 5, 5, 5, 5, 3, 3, 3, 2, 2, 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] [2023-12-20 04:17:38,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 04:17:38,632 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 04:17:38,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 04:17:38,632 INFO L85 PathProgramCache]: Analyzing trace with hash -2075575763, now seen corresponding path program 1 times [2023-12-20 04:17:38,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 04:17:38,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463160314] [2023-12-20 04:17:38,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 04:17:38,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 04:17:38,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:39,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 04:17:39,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:40,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:17:40,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:40,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:17:40,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:40,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 04:17:40,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:40,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 04:17:40,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:40,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:17:40,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:40,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 04:17:40,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:40,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-20 04:17:40,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:40,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:17:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:40,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 04:17:40,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:40,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 04:17:40,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:40,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:17:40,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:40,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-20 04:17:40,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:40,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:17:40,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:40,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:17:40,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:40,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-20 04:17:40,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:40,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-20 04:17:40,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:40,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-20 04:17:40,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:40,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 04:17:40,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:40,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-20 04:17:40,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:40,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-20 04:17:40,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:40,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-20 04:17:40,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:40,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-20 04:17:40,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:40,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-20 04:17:40,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:40,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-12-20 04:17:40,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:40,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2023-12-20 04:17:40,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:40,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-12-20 04:17:40,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:40,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2023-12-20 04:17:40,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:40,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2023-12-20 04:17:40,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:40,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2023-12-20 04:17:40,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:40,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-12-20 04:17:40,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:40,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-12-20 04:17:40,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:40,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2023-12-20 04:17:40,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:40,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1129 trivial. 0 not checked. [2023-12-20 04:17:40,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 04:17:40,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463160314] [2023-12-20 04:17:40,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463160314] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 04:17:40,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231267106] [2023-12-20 04:17:40,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 04:17:40,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 04:17:40,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 04:17:40,457 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) [2023-12-20 04:17:40,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 04:17:47,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:17:47,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 1831 conjuncts, 65 conjunts are in the unsatisfiable core [2023-12-20 04:17:47,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 04:17:47,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-20 04:17:48,262 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 9 treesize of output 3 [2023-12-20 04:17:48,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 400 proven. 41 refuted. 0 times theorem prover too weak. 695 trivial. 0 not checked. [2023-12-20 04:17:48,274 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 04:17:48,541 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 20 treesize of output 18 [2023-12-20 04:17:48,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 26 treesize of output 22 [2023-12-20 04:17:49,214 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 20 treesize of output 18 [2023-12-20 04:17:49,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 26 treesize of output 22 [2023-12-20 04:17:49,312 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 20 treesize of output 18 [2023-12-20 04:17:49,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 26 treesize of output 22 [2023-12-20 04:17:49,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 12 proven. 25 refuted. 0 times theorem prover too weak. 1099 trivial. 0 not checked. [2023-12-20 04:17:49,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231267106] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 04:17:49,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 04:17:49,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 26, 21] total 57 [2023-12-20 04:17:49,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358813870] [2023-12-20 04:17:49,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 04:17:49,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-12-20 04:17:49,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 04:17:49,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-12-20 04:17:49,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=2832, Unknown=0, NotChecked=0, Total=3192 [2023-12-20 04:17:49,957 INFO L87 Difference]: Start difference. First operand 807 states and 1074 transitions. Second operand has 57 states, 51 states have (on average 3.0) internal successors, (153), 51 states have internal predecessors, (153), 32 states have call successors, (73), 20 states have call predecessors, (73), 21 states have return successors, (72), 30 states have call predecessors, (72), 32 states have call successors, (72) [2023-12-20 04:17:54,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:17:58,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:18:02,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:18:06,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:18:10,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:18:14,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:18:18,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:18:22,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:18:26,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:18:30,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:18:34,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:18:38,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:18:42,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:18:46,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:18:50,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:18:54,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:18:58,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:19:02,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:19:06,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:19:10,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:19:14,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:19:18,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:19:22,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:19:26,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:19:30,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:19:34,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:19:38,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:19:42,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:19:46,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:19:50,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:19:54,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:19:58,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:20:02,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:20:06,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:20:10,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:20:14,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:20:18,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:20:22,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:20:26,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:20:30,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:20:34,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:20:38,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:20:42,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-20 04:20:56,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 04:20:56,334 INFO L93 Difference]: Finished difference Result 1668 states and 2184 transitions. [2023-12-20 04:20:56,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2023-12-20 04:20:56,335 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 51 states have (on average 3.0) internal successors, (153), 51 states have internal predecessors, (153), 32 states have call successors, (73), 20 states have call predecessors, (73), 21 states have return successors, (72), 30 states have call predecessors, (72), 32 states have call successors, (72) Word has length 220 [2023-12-20 04:20:56,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 04:20:56,338 INFO L225 Difference]: With dead ends: 1668 [2023-12-20 04:20:56,338 INFO L226 Difference]: Without dead ends: 962 [2023-12-20 04:20:56,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 624 GetRequests, 479 SyntacticMatches, 1 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6381 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=3099, Invalid=18071, Unknown=0, NotChecked=0, Total=21170 [2023-12-20 04:20:56,342 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 2999 mSDsluCounter, 2128 mSDsCounter, 0 mSdLazyCounter, 6207 mSolverCounterSat, 3751 mSolverCounterUnsat, 43 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 178.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2999 SdHoareTripleChecker+Valid, 2328 SdHoareTripleChecker+Invalid, 10001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3751 IncrementalHoareTripleChecker+Valid, 6207 IncrementalHoareTripleChecker+Invalid, 43 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 179.1s IncrementalHoareTripleChecker+Time [2023-12-20 04:20:56,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2999 Valid, 2328 Invalid, 10001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3751 Valid, 6207 Invalid, 43 Unknown, 0 Unchecked, 179.1s Time] [2023-12-20 04:20:56,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2023-12-20 04:20:56,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 676. [2023-12-20 04:20:56,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 437 states have (on average 1.137299771167048) internal successors, (497), 435 states have internal predecessors, (497), 141 states have call successors, (141), 77 states have call predecessors, (141), 97 states have return successors, (182), 163 states have call predecessors, (182), 141 states have call successors, (182) [2023-12-20 04:20:56,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 820 transitions. [2023-12-20 04:20:56,473 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 820 transitions. Word has length 220 [2023-12-20 04:20:56,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 04:20:56,473 INFO L495 AbstractCegarLoop]: Abstraction has 676 states and 820 transitions. [2023-12-20 04:20:56,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 51 states have (on average 3.0) internal successors, (153), 51 states have internal predecessors, (153), 32 states have call successors, (73), 20 states have call predecessors, (73), 21 states have return successors, (72), 30 states have call predecessors, (72), 32 states have call successors, (72) [2023-12-20 04:20:56,474 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 820 transitions. [2023-12-20 04:20:56,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-12-20 04:20:56,476 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 04:20:56,476 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 9, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 04:20:56,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-20 04:20:56,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-20 04:20:56,692 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 04:20:56,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 04:20:56,693 INFO L85 PathProgramCache]: Analyzing trace with hash 896123674, now seen corresponding path program 1 times [2023-12-20 04:20:56,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 04:20:56,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998799589] [2023-12-20 04:20:56,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 04:20:56,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 04:20:58,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:21:07,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 04:21:07,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:21:11,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:21:11,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:21:11,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:21:11,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:21:11,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 04:21:11,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:21:12,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 04:21:12,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:21:12,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:21:12,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:21:12,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 04:21:12,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:21:12,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-20 04:21:12,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:21:12,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:21:12,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:21:12,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 04:21:12,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:21:13,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 04:21:13,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:21:13,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:21:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:21:13,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-20 04:21:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:21:13,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:21:13,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:21:13,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:21:13,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:21:13,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-20 04:21:13,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:21:13,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:21:13,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:21:13,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 04:21:13,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:21:13,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-20 04:21:13,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:21:13,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-20 04:21:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:21:13,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-20 04:21:13,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:21:13,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-20 04:21:13,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:21:13,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-12-20 04:21:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:21:13,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-12-20 04:21:13,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:21:13,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-20 04:21:13,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:21:13,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-12-20 04:21:13,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:21:13,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-12-20 04:21:13,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:21:13,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-12-20 04:21:13,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:21:13,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2023-12-20 04:21:13,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:21:13,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2023-12-20 04:21:13,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:21:13,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2023-12-20 04:21:13,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:21:13,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-12-20 04:21:13,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:21:13,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2023-12-20 04:21:13,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:21:13,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2023-12-20 04:21:13,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:21:13,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2023-12-20 04:21:13,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:21:13,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2023-12-20 04:21:13,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:21:13,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1258 backedges. 38 proven. 292 refuted. 0 times theorem prover too weak. 928 trivial. 0 not checked. [2023-12-20 04:21:13,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 04:21:13,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998799589] [2023-12-20 04:21:13,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998799589] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 04:21:13,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487188062] [2023-12-20 04:21:13,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 04:21:13,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 04:21:13,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 04:21:13,892 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) [2023-12-20 04:21:13,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 04:21:24,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 04:21:24,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 1973 conjuncts, 259 conjunts are in the unsatisfiable core [2023-12-20 04:21:24,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 04:21:24,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 21 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 74 [2023-12-20 04:21:24,988 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 [2023-12-20 04:21:24,997 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-12-20 04:21:25,163 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 [2023-12-20 04:21:25,291 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 04:21:25,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 74 treesize of output 46 [2023-12-20 04:21:25,306 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 04:21:25,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2023-12-20 04:21:25,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2023-12-20 04:21:26,176 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 [2023-12-20 04:21:26,566 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 17 treesize of output 13 [2023-12-20 04:21:26,579 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 19 treesize of output 1 [2023-12-20 04:21:28,250 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-20 04:21:28,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 45 [2023-12-20 04:21:28,259 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 18 treesize of output 16 [2023-12-20 04:21:28,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 18 treesize of output 12 [2023-12-20 04:21:28,497 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 13 treesize of output 9 [2023-12-20 04:21:28,793 INFO L349 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2023-12-20 04:21:28,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 29 [2023-12-20 04:21:28,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 [2023-12-20 04:21:29,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 64 [2023-12-20 04:21:29,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-20 04:21:29,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-20 04:21:29,527 INFO L349 Elim1Store]: treesize reduction 23, result has 47.7 percent of original size [2023-12-20 04:21:29,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 72 [2023-12-20 04:21:29,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-20 04:21:29,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 1 Received shutdown request... [2023-12-20 04:21:32,368 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-20 04:21:32,395 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 04:21:32,397 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 04:21:32,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-20 04:21:32,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-20 04:21:32,569 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 237 with TraceHistMax 24,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 84 known predicates. [2023-12-20 04:21:32,573 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 04:21:32,574 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 04:21:32,575 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 04:21:32 BoogieIcfgContainer [2023-12-20 04:21:32,575 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 04:21:32,576 INFO L158 Benchmark]: Toolchain (without parser) took 848025.73ms. Allocated memory was 216.0MB in the beginning and 1.1GB in the end (delta: 903.9MB). Free memory was 147.9MB in the beginning and 504.3MB in the end (delta: -356.4MB). Peak memory consumption was 548.2MB. Max. memory is 8.0GB. [2023-12-20 04:21:32,576 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 216.0MB. Free memory is still 164.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 04:21:32,576 INFO L158 Benchmark]: CACSL2BoogieTranslator took 510.30ms. Allocated memory was 216.0MB in the beginning and 271.6MB in the end (delta: 55.6MB). Free memory was 147.7MB in the beginning and 222.8MB in the end (delta: -75.1MB). Peak memory consumption was 20.1MB. Max. memory is 8.0GB. [2023-12-20 04:21:32,576 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.96ms. Allocated memory is still 271.6MB. Free memory was 222.8MB in the beginning and 218.7MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-20 04:21:32,576 INFO L158 Benchmark]: Boogie Preprocessor took 89.26ms. Allocated memory is still 271.6MB. Free memory was 218.2MB in the beginning and 211.3MB in the end (delta: 6.9MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2023-12-20 04:21:32,576 INFO L158 Benchmark]: RCFGBuilder took 4753.71ms. Allocated memory is still 271.6MB. Free memory was 211.3MB in the beginning and 228.1MB in the end (delta: -16.8MB). Peak memory consumption was 52.5MB. Max. memory is 8.0GB. [2023-12-20 04:21:32,576 INFO L158 Benchmark]: TraceAbstraction took 842601.32ms. Allocated memory was 271.6MB in the beginning and 1.1GB in the end (delta: 848.3MB). Free memory was 227.5MB in the beginning and 504.3MB in the end (delta: -276.8MB). Peak memory consumption was 572.0MB. Max. memory is 8.0GB. [2023-12-20 04:21:32,577 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 216.0MB. Free memory is still 164.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 510.30ms. Allocated memory was 216.0MB in the beginning and 271.6MB in the end (delta: 55.6MB). Free memory was 147.7MB in the beginning and 222.8MB in the end (delta: -75.1MB). Peak memory consumption was 20.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 58.96ms. Allocated memory is still 271.6MB. Free memory was 222.8MB in the beginning and 218.7MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 89.26ms. Allocated memory is still 271.6MB. Free memory was 218.2MB in the beginning and 211.3MB in the end (delta: 6.9MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * RCFGBuilder took 4753.71ms. Allocated memory is still 271.6MB. Free memory was 211.3MB in the beginning and 228.1MB in the end (delta: -16.8MB). Peak memory consumption was 52.5MB. Max. memory is 8.0GB. * TraceAbstraction took 842601.32ms. Allocated memory was 271.6MB in the beginning and 1.1GB in the end (delta: 848.3MB). Free memory was 227.5MB in the beginning and 504.3MB in the end (delta: -276.8MB). Peak memory consumption was 572.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 542]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 542). Cancelled while NwaCegarLoop was analyzing trace of length 237 with TraceHistMax 24,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 84 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 103 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 842.6s, OverallIterations: 15, TraceHistogramMax: 25, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 729.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 250 mSolverCounterUnknown, 10071 SdHoareTripleChecker+Valid, 682.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9860 mSDsluCounter, 16095 SdHoareTripleChecker+Invalid, 677.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13811 mSDsCounter, 11334 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 33113 IncrementalHoareTripleChecker+Invalid, 44697 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11334 mSolverCounterUnsat, 2284 mSDtfsCounter, 33113 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4580 GetRequests, 3891 SyntacticMatches, 14 SemanticMatches, 675 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28454 ImplicationChecksByTransitivity, 84.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=960occurred in iteration=12, InterpolantAutomatonStates: 473, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 14 MinimizatonAttempts, 2213 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 11.1s SatisfiabilityAnalysisTime, 58.2s InterpolantComputationTime, 4484 NumberOfCodeBlocks, 4376 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 5625 ConstructedInterpolants, 49 QuantifiedInterpolants, 21532 SizeOfPredicates, 66 NumberOfNonLiveVariables, 14061 ConjunctsInSsa, 380 ConjunctsInUnsatCore, 29 InterpolantComputations, 7 PerfectInterpolantSequences, 29285/29515 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown