./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-pthread/cs_stack-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-pthread/cs_stack-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f673ebb9e7e04aacff207de4acfe748a76999a1319247236c14ae51e44f23889 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 15:17:35,125 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 15:17:35,164 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 15:17:35,168 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 15:17:35,169 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 15:17:35,195 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 15:17:35,196 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 15:17:35,196 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 15:17:35,197 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 15:17:35,198 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 15:17:35,198 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 15:17:35,199 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 15:17:35,200 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 15:17:35,200 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 15:17:35,201 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 15:17:35,202 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 15:17:35,203 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 15:17:35,204 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 15:17:35,204 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 15:17:35,204 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 15:17:35,205 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 15:17:35,208 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 15:17:35,208 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 15:17:35,208 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 15:17:35,209 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 15:17:35,209 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 15:17:35,209 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 15:17:35,209 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 15:17:35,210 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 15:17:35,210 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 15:17:35,210 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 15:17:35,210 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 15:17:35,210 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:17:35,211 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 15:17:35,211 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 15:17:35,211 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 15:17:35,213 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 15:17:35,214 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 15:17:35,214 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 15:17:35,214 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 15:17:35,214 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 15:17:35,215 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 15:17:35,215 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f673ebb9e7e04aacff207de4acfe748a76999a1319247236c14ae51e44f23889 [2024-11-18 15:17:35,462 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 15:17:35,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 15:17:35,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 15:17:35,490 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 15:17:35,490 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 15:17:35,491 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-pthread/cs_stack-1.i [2024-11-18 15:17:36,910 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 15:17:37,146 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 15:17:37,147 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_stack-1.i [2024-11-18 15:17:37,166 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98666b234/6a21c8fd9b474c2fbe9ef306f3f63256/FLAG7f1a490a3 [2024-11-18 15:17:37,188 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98666b234/6a21c8fd9b474c2fbe9ef306f3f63256 [2024-11-18 15:17:37,191 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 15:17:37,193 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 15:17:37,194 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 15:17:37,195 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 15:17:37,212 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 15:17:37,213 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:17:37" (1/1) ... [2024-11-18 15:17:37,214 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c8fc0fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:37, skipping insertion in model container [2024-11-18 15:17:37,214 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:17:37" (1/1) ... [2024-11-18 15:17:37,273 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 15:17:37,700 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_stack-1.i[34744,34757] [2024-11-18 15:17:37,794 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:17:37,806 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 15:17:37,857 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_stack-1.i[34744,34757] [2024-11-18 15:17:37,921 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:17:37,976 INFO L204 MainTranslator]: Completed translation [2024-11-18 15:17:37,976 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:37 WrapperNode [2024-11-18 15:17:37,976 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 15:17:37,977 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 15:17:37,978 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 15:17:37,978 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 15:17:37,986 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:37" (1/1) ... [2024-11-18 15:17:38,011 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:37" (1/1) ... [2024-11-18 15:17:38,055 INFO L138 Inliner]: procedures = 254, calls = 303, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 696 [2024-11-18 15:17:38,055 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 15:17:38,056 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 15:17:38,056 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 15:17:38,056 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 15:17:38,065 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:37" (1/1) ... [2024-11-18 15:17:38,065 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:37" (1/1) ... [2024-11-18 15:17:38,072 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:37" (1/1) ... [2024-11-18 15:17:38,100 INFO L175 MemorySlicer]: Split 156 memory accesses to 18 slices as follows [2, 22, 8, 8, 0, 8, 20, 12, 7, 12, 6, 4, 5, 21, 3, 3, 7, 8]. 14 percent of accesses are in the largest equivalence class. The 53 initializations are split as follows [2, 10, 3, 3, 0, 3, 6, 6, 0, 2, 2, 2, 2, 10, 0, 0, 0, 2]. The 38 writes are split as follows [0, 6, 2, 2, 0, 2, 8, 3, 1, 3, 2, 1, 1, 1, 1, 1, 1, 3]. [2024-11-18 15:17:38,100 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:37" (1/1) ... [2024-11-18 15:17:38,101 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:37" (1/1) ... [2024-11-18 15:17:38,121 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:37" (1/1) ... [2024-11-18 15:17:38,125 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:37" (1/1) ... [2024-11-18 15:17:38,132 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:37" (1/1) ... [2024-11-18 15:17:38,136 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:37" (1/1) ... [2024-11-18 15:17:38,145 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 15:17:38,146 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 15:17:38,146 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 15:17:38,146 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 15:17:38,147 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:37" (1/1) ... [2024-11-18 15:17:38,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:17:38,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:17:38,190 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 15:17:38,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 15:17:38,232 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 15:17:38,232 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 15:17:38,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-18 15:17:38,233 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_lock [2024-11-18 15:17:38,233 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_lock [2024-11-18 15:17:38,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-18 15:17:38,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-18 15:17:38,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-18 15:17:38,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-18 15:17:38,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-18 15:17:38,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-18 15:17:38,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-18 15:17:38,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-18 15:17:38,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-18 15:17:38,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2024-11-18 15:17:38,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2024-11-18 15:17:38,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2024-11-18 15:17:38,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2024-11-18 15:17:38,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#13 [2024-11-18 15:17:38,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#14 [2024-11-18 15:17:38,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#15 [2024-11-18 15:17:38,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#16 [2024-11-18 15:17:38,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#17 [2024-11-18 15:17:38,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-18 15:17:38,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-18 15:17:38,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-18 15:17:38,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-18 15:17:38,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-18 15:17:38,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-18 15:17:38,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-18 15:17:38,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-18 15:17:38,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-18 15:17:38,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2024-11-18 15:17:38,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2024-11-18 15:17:38,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#10 [2024-11-18 15:17:38,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#11 [2024-11-18 15:17:38,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#12 [2024-11-18 15:17:38,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#13 [2024-11-18 15:17:38,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#14 [2024-11-18 15:17:38,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#15 [2024-11-18 15:17:38,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#16 [2024-11-18 15:17:38,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#17 [2024-11-18 15:17:38,237 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_unlock [2024-11-18 15:17:38,237 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_unlock [2024-11-18 15:17:38,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-18 15:17:38,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-18 15:17:38,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-18 15:17:38,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-18 15:17:38,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-18 15:17:38,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-18 15:17:38,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-18 15:17:38,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-18 15:17:38,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-18 15:17:38,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-18 15:17:38,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-18 15:17:38,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-18 15:17:38,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-18 15:17:38,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-11-18 15:17:38,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2024-11-18 15:17:38,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2024-11-18 15:17:38,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#16 [2024-11-18 15:17:38,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#17 [2024-11-18 15:17:38,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-18 15:17:38,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-18 15:17:38,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-18 15:17:38,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-18 15:17:38,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-18 15:17:38,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-18 15:17:38,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-18 15:17:38,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-18 15:17:38,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-18 15:17:38,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-18 15:17:38,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-18 15:17:38,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-18 15:17:38,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-18 15:17:38,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-11-18 15:17:38,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2024-11-18 15:17:38,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2024-11-18 15:17:38,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#16 [2024-11-18 15:17:38,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#17 [2024-11-18 15:17:38,244 INFO L130 BoogieDeclarations]: Found specification of procedure get_top [2024-11-18 15:17:38,244 INFO L138 BoogieDeclarations]: Found implementation of procedure get_top [2024-11-18 15:17:38,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 15:17:38,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-18 15:17:38,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-18 15:17:38,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-18 15:17:38,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-18 15:17:38,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-18 15:17:38,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-18 15:17:38,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-18 15:17:38,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-18 15:17:38,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-18 15:17:38,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2024-11-18 15:17:38,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2024-11-18 15:17:38,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#11 [2024-11-18 15:17:38,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#12 [2024-11-18 15:17:38,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#13 [2024-11-18 15:17:38,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#14 [2024-11-18 15:17:38,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#15 [2024-11-18 15:17:38,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#16 [2024-11-18 15:17:38,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#17 [2024-11-18 15:17:38,246 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2024-11-18 15:17:38,247 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2024-11-18 15:17:38,247 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2024-11-18 15:17:38,247 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2024-11-18 15:17:38,247 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2024-11-18 15:17:38,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2024-11-18 15:17:38,248 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-11-18 15:17:38,248 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-11-18 15:17:38,248 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2024-11-18 15:17:38,248 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2024-11-18 15:17:38,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 15:17:38,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 15:17:38,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 15:17:38,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-18 15:17:38,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-18 15:17:38,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-18 15:17:38,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-18 15:17:38,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-18 15:17:38,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-18 15:17:38,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-18 15:17:38,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-18 15:17:38,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-18 15:17:38,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-18 15:17:38,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-18 15:17:38,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-18 15:17:38,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-18 15:17:38,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-18 15:17:38,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-18 15:17:38,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 15:17:38,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 15:17:38,549 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 15:17:38,550 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 15:17:38,584 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2024-11-18 15:17:38,584 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);#res := 0; [2024-11-18 15:17:38,876 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##97: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2024-11-18 15:17:38,877 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##96: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);push_#res#1 := 0; [2024-11-18 15:17:38,877 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##54: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2024-11-18 15:17:38,877 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##53: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);pop_#res#1 := 0; [2024-11-18 15:17:38,877 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##58: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2024-11-18 15:17:38,877 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##57: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);pop_#res#1 := 0; [2024-11-18 15:17:38,877 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2024-11-18 15:17:38,877 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##42: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);pop_#res#1 := 0; [2024-11-18 15:17:38,878 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint L1005: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);pop_#res#1 := 0; [2024-11-18 15:17:38,878 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint L1005: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296));pop_#res#1 := 0; [2024-11-18 15:17:38,878 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint L989-2: SUMMARY for call __CS_cs(); srcloc: null [2024-11-18 15:17:38,882 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##111: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);push_#res#1 := 0; [2024-11-18 15:17:38,882 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##112: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2024-11-18 15:17:38,894 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2024-11-18 15:17:38,895 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296); [2024-11-18 15:17:38,895 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##7: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296); [2024-11-18 15:17:38,895 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2024-11-18 15:17:38,895 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2024-11-18 15:17:38,895 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint L933: SUMMARY for call __CS_cs(); srcloc: null [2024-11-18 15:17:38,895 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint L933-1: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296); [2024-11-18 15:17:38,895 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint L933-1: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2024-11-18 15:17:38,895 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296); [2024-11-18 15:17:39,350 INFO L? ?]: Removed 95 outVars from TransFormulas that were not future-live. [2024-11-18 15:17:39,350 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 15:17:39,371 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 15:17:39,372 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-18 15:17:39,374 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:17:39 BoogieIcfgContainer [2024-11-18 15:17:39,374 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 15:17:39,376 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 15:17:39,377 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 15:17:39,380 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 15:17:39,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 03:17:37" (1/3) ... [2024-11-18 15:17:39,381 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12d4e83f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:17:39, skipping insertion in model container [2024-11-18 15:17:39,381 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:37" (2/3) ... [2024-11-18 15:17:39,382 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12d4e83f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:17:39, skipping insertion in model container [2024-11-18 15:17:39,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:17:39" (3/3) ... [2024-11-18 15:17:39,384 INFO L112 eAbstractionObserver]: Analyzing ICFG cs_stack-1.i [2024-11-18 15:17:39,400 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 15:17:39,400 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 15:17:39,483 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 15:17:39,489 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4b80edf5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 15:17:39,490 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 15:17:39,494 INFO L276 IsEmpty]: Start isEmpty. Operand has 224 states, 140 states have (on average 1.5285714285714285) internal successors, (214), 143 states have internal predecessors, (214), 73 states have call successors, (73), 9 states have call predecessors, (73), 9 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2024-11-18 15:17:39,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-18 15:17:39,515 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:17:39,520 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:17:39,521 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:17:39,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:17:39,527 INFO L85 PathProgramCache]: Analyzing trace with hash 2105473957, now seen corresponding path program 1 times [2024-11-18 15:17:39,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:17:39,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450270067] [2024-11-18 15:17:39,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:17:39,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:17:39,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:17:40,269 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-18 15:17:40,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:17:40,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450270067] [2024-11-18 15:17:40,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450270067] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:17:40,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:17:40,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:17:40,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058630287] [2024-11-18 15:17:40,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:17:40,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:17:40,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:17:40,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:17:40,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:17:40,319 INFO L87 Difference]: Start difference. First operand has 224 states, 140 states have (on average 1.5285714285714285) internal successors, (214), 143 states have internal predecessors, (214), 73 states have call successors, (73), 9 states have call predecessors, (73), 9 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-18 15:17:40,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:17:40,431 INFO L93 Difference]: Finished difference Result 453 states and 798 transitions. [2024-11-18 15:17:40,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:17:40,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 96 [2024-11-18 15:17:40,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:17:40,447 INFO L225 Difference]: With dead ends: 453 [2024-11-18 15:17:40,449 INFO L226 Difference]: Without dead ends: 227 [2024-11-18 15:17:40,456 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:17:40,460 INFO L432 NwaCegarLoop]: 349 mSDtfsCounter, 8 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:17:40,461 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 695 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:17:40,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-11-18 15:17:40,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 221. [2024-11-18 15:17:40,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 138 states have (on average 1.4782608695652173) internal successors, (204), 140 states have internal predecessors, (204), 73 states have call successors, (73), 9 states have call predecessors, (73), 9 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2024-11-18 15:17:40,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 350 transitions. [2024-11-18 15:17:40,520 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 350 transitions. Word has length 96 [2024-11-18 15:17:40,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:17:40,520 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 350 transitions. [2024-11-18 15:17:40,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-18 15:17:40,521 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 350 transitions. [2024-11-18 15:17:40,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-18 15:17:40,526 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:17:40,526 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:17:40,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 15:17:40,527 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:17:40,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:17:40,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1809952576, now seen corresponding path program 1 times [2024-11-18 15:17:40,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:17:40,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949631413] [2024-11-18 15:17:40,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:17:40,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:17:40,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:17:40,912 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-18 15:17:40,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:17:40,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949631413] [2024-11-18 15:17:40,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949631413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:17:40,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:17:40,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:17:40,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932611490] [2024-11-18 15:17:40,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:17:40,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:17:40,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:17:40,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:17:40,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:17:40,916 INFO L87 Difference]: Start difference. First operand 221 states and 350 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-18 15:17:40,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:17:40,959 INFO L93 Difference]: Finished difference Result 443 states and 703 transitions. [2024-11-18 15:17:40,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:17:40,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 101 [2024-11-18 15:17:40,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:17:40,966 INFO L225 Difference]: With dead ends: 443 [2024-11-18 15:17:40,967 INFO L226 Difference]: Without dead ends: 225 [2024-11-18 15:17:40,968 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:17:40,969 INFO L432 NwaCegarLoop]: 345 mSDtfsCounter, 2 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:17:40,969 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 685 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:17:40,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-11-18 15:17:40,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 223. [2024-11-18 15:17:40,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 140 states have (on average 1.4714285714285715) internal successors, (206), 142 states have internal predecessors, (206), 73 states have call successors, (73), 9 states have call predecessors, (73), 9 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2024-11-18 15:17:40,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 352 transitions. [2024-11-18 15:17:40,999 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 352 transitions. Word has length 101 [2024-11-18 15:17:41,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:17:41,001 INFO L471 AbstractCegarLoop]: Abstraction has 223 states and 352 transitions. [2024-11-18 15:17:41,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-18 15:17:41,002 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 352 transitions. [2024-11-18 15:17:41,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-18 15:17:41,009 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:17:41,009 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:17:41,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 15:17:41,010 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:17:41,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:17:41,011 INFO L85 PathProgramCache]: Analyzing trace with hash 873048004, now seen corresponding path program 1 times [2024-11-18 15:17:41,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:17:41,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332525780] [2024-11-18 15:17:41,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:17:41,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:17:41,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:17:41,244 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2024-11-18 15:17:41,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:17:41,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332525780] [2024-11-18 15:17:41,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332525780] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:17:41,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323519977] [2024-11-18 15:17:41,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:17:41,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:17:41,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:17:41,248 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:17:41,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 15:17:41,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:17:41,580 INFO L255 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 15:17:41,589 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:17:41,641 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2024-11-18 15:17:41,642 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 15:17:41,754 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2024-11-18 15:17:41,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323519977] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 15:17:41,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 15:17:41,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-11-18 15:17:41,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305862750] [2024-11-18 15:17:41,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 15:17:41,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:17:41,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:17:41,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:17:41,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:17:41,761 INFO L87 Difference]: Start difference. First operand 223 states and 352 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-18 15:17:41,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:17:41,841 INFO L93 Difference]: Finished difference Result 452 states and 714 transitions. [2024-11-18 15:17:41,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 15:17:41,842 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 105 [2024-11-18 15:17:41,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:17:41,844 INFO L225 Difference]: With dead ends: 452 [2024-11-18 15:17:41,844 INFO L226 Difference]: Without dead ends: 232 [2024-11-18 15:17:41,845 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 207 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:17:41,846 INFO L432 NwaCegarLoop]: 345 mSDtfsCounter, 5 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:17:41,846 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1025 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:17:41,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-11-18 15:17:41,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 231. [2024-11-18 15:17:41,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 148 states have (on average 1.445945945945946) internal successors, (214), 150 states have internal predecessors, (214), 73 states have call successors, (73), 9 states have call predecessors, (73), 9 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2024-11-18 15:17:41,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 360 transitions. [2024-11-18 15:17:41,860 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 360 transitions. Word has length 105 [2024-11-18 15:17:41,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:17:41,861 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 360 transitions. [2024-11-18 15:17:41,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-18 15:17:41,861 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 360 transitions. [2024-11-18 15:17:41,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-18 15:17:41,864 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:17:41,864 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:17:41,885 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 15:17:42,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:17:42,066 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:17:42,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:17:42,066 INFO L85 PathProgramCache]: Analyzing trace with hash -410837044, now seen corresponding path program 2 times [2024-11-18 15:17:42,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:17:42,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206463484] [2024-11-18 15:17:42,067 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 15:17:42,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:17:42,172 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-18 15:17:42,172 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 15:17:42,325 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2024-11-18 15:17:42,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:17:42,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206463484] [2024-11-18 15:17:42,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206463484] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:17:42,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:17:42,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 15:17:42,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819975516] [2024-11-18 15:17:42,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:17:42,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 15:17:42,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:17:42,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 15:17:42,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 15:17:42,328 INFO L87 Difference]: Start difference. First operand 231 states and 360 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-18 15:17:42,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:17:42,369 INFO L93 Difference]: Finished difference Result 439 states and 701 transitions. [2024-11-18 15:17:42,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 15:17:42,370 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 113 [2024-11-18 15:17:42,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:17:42,375 INFO L225 Difference]: With dead ends: 439 [2024-11-18 15:17:42,375 INFO L226 Difference]: Without dead ends: 405 [2024-11-18 15:17:42,375 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:17:42,378 INFO L432 NwaCegarLoop]: 374 mSDtfsCounter, 297 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:17:42,380 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 1076 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:17:42,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2024-11-18 15:17:42,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 404. [2024-11-18 15:17:42,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 254 states have (on average 1.4960629921259843) internal successors, (380), 258 states have internal predecessors, (380), 131 states have call successors, (131), 18 states have call predecessors, (131), 18 states have return successors, (139), 131 states have call predecessors, (139), 131 states have call successors, (139) [2024-11-18 15:17:42,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 650 transitions. [2024-11-18 15:17:42,418 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 650 transitions. Word has length 113 [2024-11-18 15:17:42,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:17:42,418 INFO L471 AbstractCegarLoop]: Abstraction has 404 states and 650 transitions. [2024-11-18 15:17:42,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-18 15:17:42,419 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 650 transitions. [2024-11-18 15:17:42,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-18 15:17:42,422 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:17:42,422 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 5, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:17:42,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 15:17:42,423 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:17:42,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:17:42,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1639487556, now seen corresponding path program 1 times [2024-11-18 15:17:42,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:17:42,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549325422] [2024-11-18 15:17:42,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:17:42,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:17:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:17:42,731 INFO L134 CoverageAnalysis]: Checked inductivity of 753 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 752 trivial. 0 not checked. [2024-11-18 15:17:42,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:17:42,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549325422] [2024-11-18 15:17:42,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549325422] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:17:42,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112740395] [2024-11-18 15:17:42,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:17:42,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:17:42,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:17:42,737 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:17:42,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 15:17:43,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:17:43,241 INFO L255 TraceCheckSpWp]: Trace formula consists of 1256 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 15:17:43,250 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:17:43,300 INFO L134 CoverageAnalysis]: Checked inductivity of 753 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 743 trivial. 0 not checked. [2024-11-18 15:17:43,302 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 15:17:43,497 INFO L134 CoverageAnalysis]: Checked inductivity of 753 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 743 trivial. 0 not checked. [2024-11-18 15:17:43,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112740395] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 15:17:43,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 15:17:43,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 9 [2024-11-18 15:17:43,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530181968] [2024-11-18 15:17:43,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 15:17:43,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 15:17:43,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:17:43,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 15:17:43,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:17:43,500 INFO L87 Difference]: Start difference. First operand 404 states and 650 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2024-11-18 15:17:43,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:17:43,673 INFO L93 Difference]: Finished difference Result 830 states and 1329 transitions. [2024-11-18 15:17:43,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 15:17:43,674 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) Word has length 192 [2024-11-18 15:17:43,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:17:43,678 INFO L225 Difference]: With dead ends: 830 [2024-11-18 15:17:43,678 INFO L226 Difference]: Without dead ends: 429 [2024-11-18 15:17:43,680 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 384 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=126, Invalid=216, Unknown=0, NotChecked=0, Total=342 [2024-11-18 15:17:43,681 INFO L432 NwaCegarLoop]: 342 mSDtfsCounter, 34 mSDsluCounter, 2034 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 2376 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 15:17:43,681 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 2376 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 15:17:43,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2024-11-18 15:17:43,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2024-11-18 15:17:43,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 279 states have (on average 1.4587813620071686) internal successors, (407), 283 states have internal predecessors, (407), 131 states have call successors, (131), 18 states have call predecessors, (131), 18 states have return successors, (139), 131 states have call predecessors, (139), 131 states have call successors, (139) [2024-11-18 15:17:43,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 677 transitions. [2024-11-18 15:17:43,709 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 677 transitions. Word has length 192 [2024-11-18 15:17:43,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:17:43,709 INFO L471 AbstractCegarLoop]: Abstraction has 429 states and 677 transitions. [2024-11-18 15:17:43,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2024-11-18 15:17:43,710 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 677 transitions. [2024-11-18 15:17:43,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-11-18 15:17:43,713 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:17:43,713 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 10, 10, 6, 6, 5, 5, 5, 5, 5, 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] [2024-11-18 15:17:43,728 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 15:17:43,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:17:43,918 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:17:43,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:17:43,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1075591815, now seen corresponding path program 2 times [2024-11-18 15:17:43,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:17:43,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933642164] [2024-11-18 15:17:43,919 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 15:17:43,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:17:44,031 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-18 15:17:44,031 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 15:17:44,254 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 893 trivial. 0 not checked. [2024-11-18 15:17:44,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:17:44,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933642164] [2024-11-18 15:17:44,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933642164] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:17:44,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:17:44,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 15:17:44,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803153120] [2024-11-18 15:17:44,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:17:44,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:17:44,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:17:44,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:17:44,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:17:44,258 INFO L87 Difference]: Start difference. First operand 429 states and 677 transitions. Second operand has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 4 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-18 15:17:48,274 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 [] [2024-11-18 15:17:52,459 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 [] [2024-11-18 15:17:52,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:17:52,724 INFO L93 Difference]: Finished difference Result 860 states and 1380 transitions. [2024-11-18 15:17:52,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 15:17:52,725 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 4 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 217 [2024-11-18 15:17:52,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:17:52,735 INFO L225 Difference]: With dead ends: 860 [2024-11-18 15:17:52,736 INFO L226 Difference]: Without dead ends: 822 [2024-11-18 15:17:52,737 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 15:17:52,738 INFO L432 NwaCegarLoop]: 399 mSDtfsCounter, 401 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 52 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 1431 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2024-11-18 15:17:52,740 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 1431 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 103 Invalid, 2 Unknown, 0 Unchecked, 8.4s Time] [2024-11-18 15:17:52,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2024-11-18 15:17:52,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 815. [2024-11-18 15:17:52,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 514 states have (on average 1.4863813229571985) internal successors, (764), 525 states have internal predecessors, (764), 261 states have call successors, (261), 36 states have call predecessors, (261), 39 states have return successors, (293), 261 states have call predecessors, (293), 261 states have call successors, (293) [2024-11-18 15:17:52,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1318 transitions. [2024-11-18 15:17:52,814 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1318 transitions. Word has length 217 [2024-11-18 15:17:52,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:17:52,814 INFO L471 AbstractCegarLoop]: Abstraction has 815 states and 1318 transitions. [2024-11-18 15:17:52,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 4 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-18 15:17:52,815 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1318 transitions. [2024-11-18 15:17:52,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-11-18 15:17:52,823 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:17:52,823 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 10, 10, 6, 6, 5, 5, 5, 5, 5, 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] [2024-11-18 15:17:52,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 15:17:52,823 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:17:52,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:17:52,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1166529487, now seen corresponding path program 1 times [2024-11-18 15:17:52,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:17:52,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019018217] [2024-11-18 15:17:52,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:17:52,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:17:52,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:17:53,583 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 893 trivial. 0 not checked. [2024-11-18 15:17:53,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:17:53,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019018217] [2024-11-18 15:17:53,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019018217] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:17:53,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:17:53,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 15:17:53,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902954423] [2024-11-18 15:17:53,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:17:53,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:17:53,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:17:53,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:17:53,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:17:53,585 INFO L87 Difference]: Start difference. First operand 815 states and 1318 transitions. Second operand has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 4 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-18 15:17:54,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:17:54,198 INFO L93 Difference]: Finished difference Result 1569 states and 2542 transitions. [2024-11-18 15:17:54,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 15:17:54,199 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 4 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 217 [2024-11-18 15:17:54,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:17:54,207 INFO L225 Difference]: With dead ends: 1569 [2024-11-18 15:17:54,207 INFO L226 Difference]: Without dead ends: 802 [2024-11-18 15:17:54,211 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 15:17:54,212 INFO L432 NwaCegarLoop]: 399 mSDtfsCounter, 403 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 1434 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 15:17:54,212 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 1434 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 15:17:54,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2024-11-18 15:17:54,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 798. [2024-11-18 15:17:54,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 505 states have (on average 1.4792079207920792) internal successors, (747), 516 states have internal predecessors, (747), 253 states have call successors, (253), 35 states have call predecessors, (253), 39 states have return successors, (279), 254 states have call predecessors, (279), 253 states have call successors, (279) [2024-11-18 15:17:54,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1279 transitions. [2024-11-18 15:17:54,263 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1279 transitions. Word has length 217 [2024-11-18 15:17:54,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:17:54,264 INFO L471 AbstractCegarLoop]: Abstraction has 798 states and 1279 transitions. [2024-11-18 15:17:54,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 4 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-18 15:17:54,264 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1279 transitions. [2024-11-18 15:17:54,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-11-18 15:17:54,269 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:17:54,269 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 10, 10, 6, 6, 5, 5, 5, 5, 5, 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] [2024-11-18 15:17:54,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 15:17:54,269 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:17:54,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:17:54,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1021991451, now seen corresponding path program 1 times [2024-11-18 15:17:54,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:17:54,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163777236] [2024-11-18 15:17:54,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:17:54,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:17:54,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:17:54,919 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 893 trivial. 0 not checked. [2024-11-18 15:17:54,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:17:54,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163777236] [2024-11-18 15:17:54,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163777236] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:17:54,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:17:54,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 15:17:54,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61207094] [2024-11-18 15:17:54,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:17:54,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:17:54,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:17:54,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:17:54,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:17:54,922 INFO L87 Difference]: Start difference. First operand 798 states and 1279 transitions. Second operand has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 4 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-18 15:17:55,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:17:55,332 INFO L93 Difference]: Finished difference Result 1251 states and 1981 transitions. [2024-11-18 15:17:55,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 15:17:55,333 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 4 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 217 [2024-11-18 15:17:55,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:17:55,338 INFO L225 Difference]: With dead ends: 1251 [2024-11-18 15:17:55,338 INFO L226 Difference]: Without dead ends: 716 [2024-11-18 15:17:55,340 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 15:17:55,341 INFO L432 NwaCegarLoop]: 410 mSDtfsCounter, 388 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 1418 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 15:17:55,341 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 1418 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 15:17:55,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2024-11-18 15:17:55,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 706. [2024-11-18 15:17:55,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 452 states have (on average 1.4469026548672566) internal successors, (654), 461 states have internal predecessors, (654), 214 states have call successors, (214), 35 states have call predecessors, (214), 39 states have return successors, (238), 215 states have call predecessors, (238), 214 states have call successors, (238) [2024-11-18 15:17:55,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 1106 transitions. [2024-11-18 15:17:55,382 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 1106 transitions. Word has length 217 [2024-11-18 15:17:55,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:17:55,382 INFO L471 AbstractCegarLoop]: Abstraction has 706 states and 1106 transitions. [2024-11-18 15:17:55,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 4 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-18 15:17:55,383 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 1106 transitions. [2024-11-18 15:17:55,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-18 15:17:55,387 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:17:55,387 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 10, 10, 6, 6, 5, 5, 5, 5, 5, 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] [2024-11-18 15:17:55,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 15:17:55,387 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:17:55,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:17:55,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1844674288, now seen corresponding path program 1 times [2024-11-18 15:17:55,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:17:55,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636221240] [2024-11-18 15:17:55,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:17:55,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:17:55,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:17:55,876 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 893 trivial. 0 not checked. [2024-11-18 15:17:55,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:17:55,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636221240] [2024-11-18 15:17:55,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636221240] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:17:55,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085398062] [2024-11-18 15:17:55,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:17:55,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:17:55,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:17:55,882 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:17:55,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 15:17:56,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:17:56,364 INFO L255 TraceCheckSpWp]: Trace formula consists of 1673 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 15:17:56,369 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:17:56,459 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 280 proven. 4 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2024-11-18 15:17:56,459 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 15:17:56,820 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 893 trivial. 0 not checked. [2024-11-18 15:17:56,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085398062] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 15:17:56,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 15:17:56,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 11 [2024-11-18 15:17:56,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810365331] [2024-11-18 15:17:56,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 15:17:56,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 15:17:56,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:17:56,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 15:17:56,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-18 15:17:56,823 INFO L87 Difference]: Start difference. First operand 706 states and 1106 transitions. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 9 states have call successors, (48), 5 states have call predecessors, (48), 6 states have return successors, (49), 7 states have call predecessors, (49), 9 states have call successors, (49) [2024-11-18 15:17:58,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:17:58,336 INFO L93 Difference]: Finished difference Result 1752 states and 2782 transitions. [2024-11-18 15:17:58,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 15:17:58,337 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 9 states have call successors, (48), 5 states have call predecessors, (48), 6 states have return successors, (49), 7 states have call predecessors, (49), 9 states have call successors, (49) Word has length 221 [2024-11-18 15:17:58,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:17:58,353 INFO L225 Difference]: With dead ends: 1752 [2024-11-18 15:17:58,353 INFO L226 Difference]: Without dead ends: 1094 [2024-11-18 15:17:58,368 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2024-11-18 15:17:58,369 INFO L432 NwaCegarLoop]: 390 mSDtfsCounter, 1129 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 689 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1212 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 1532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 689 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-18 15:17:58,369 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1212 Valid, 1101 Invalid, 1532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [689 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-18 15:17:58,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2024-11-18 15:17:58,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 1073. [2024-11-18 15:17:58,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1073 states, 676 states have (on average 1.452662721893491) internal successors, (982), 691 states have internal predecessors, (982), 335 states have call successors, (335), 57 states have call predecessors, (335), 61 states have return successors, (373), 334 states have call predecessors, (373), 335 states have call successors, (373) [2024-11-18 15:17:58,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1690 transitions. [2024-11-18 15:17:58,443 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1690 transitions. Word has length 221 [2024-11-18 15:17:58,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:17:58,443 INFO L471 AbstractCegarLoop]: Abstraction has 1073 states and 1690 transitions. [2024-11-18 15:17:58,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 9 states have call successors, (48), 5 states have call predecessors, (48), 6 states have return successors, (49), 7 states have call predecessors, (49), 9 states have call successors, (49) [2024-11-18 15:17:58,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1690 transitions. [2024-11-18 15:17:58,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-18 15:17:58,450 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:17:58,450 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 10, 10, 6, 6, 5, 5, 5, 5, 5, 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] [2024-11-18 15:17:58,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 15:17:58,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:17:58,655 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:17:58,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:17:58,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1314677552, now seen corresponding path program 1 times [2024-11-18 15:17:58,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:17:58,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383946231] [2024-11-18 15:17:58,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:17:58,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:17:58,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:18:00,709 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 893 trivial. 0 not checked. [2024-11-18 15:18:00,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:18:00,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383946231] [2024-11-18 15:18:00,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383946231] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:18:00,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533135264] [2024-11-18 15:18:00,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:18:00,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:18:00,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:18:00,715 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:18:00,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 15:18:01,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:18:01,338 INFO L255 TraceCheckSpWp]: Trace formula consists of 1771 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-18 15:18:01,345 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:18:01,550 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 [2024-11-18 15:18:03,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 15:18:03,740 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 15:18:03,740 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 25 treesize of output 15 [2024-11-18 15:18:04,456 INFO L349 Elim1Store]: treesize reduction 33, result has 25.0 percent of original size [2024-11-18 15:18:04,456 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 1 case distinctions, treesize of input 25 treesize of output 24 [2024-11-18 15:18:20,637 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 352 proven. 4 refuted. 0 times theorem prover too weak. 541 trivial. 0 not checked. [2024-11-18 15:18:20,637 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 15:18:20,856 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 [2024-11-18 15:18:20,863 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 [2024-11-18 15:18:21,264 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 [2024-11-18 15:18:21,268 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 [2024-11-18 15:18:21,328 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 [2024-11-18 15:18:21,332 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 [2024-11-18 15:18:21,433 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 893 trivial. 0 not checked. [2024-11-18 15:18:21,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533135264] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 15:18:21,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 15:18:21,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14, 9] total 37 [2024-11-18 15:18:21,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414175322] [2024-11-18 15:18:21,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 15:18:21,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-18 15:18:21,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:18:21,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-18 15:18:21,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1193, Unknown=1, NotChecked=0, Total=1332 [2024-11-18 15:18:21,437 INFO L87 Difference]: Start difference. First operand 1073 states and 1690 transitions. Second operand has 37 states, 34 states have (on average 4.617647058823529) internal successors, (157), 35 states have internal predecessors, (157), 18 states have call successors, (59), 12 states have call predecessors, (59), 14 states have return successors, (59), 16 states have call predecessors, (59), 18 states have call successors, (59) [2024-11-18 15:18:25,567 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 [] [2024-11-18 15:18:28,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:18:31,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:18:35,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:18:39,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:18:43,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:18:46,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:18:50,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:18:55,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:18:59,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:19:03,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:19:04,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:19:08,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:19:12,843 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 []