./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-pthread/cs_dekker_unfair.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_dekker_unfair.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 ee7ff83d9ca4f9baaadd009c98a7dd30697b6140296199117a6b05757b5b9f74 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 15:16:33,423 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 15:16:33,464 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 15:16:33,484 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 15:16:33,486 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 15:16:33,521 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 15:16:33,522 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 15:16:33,522 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 15:16:33,523 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 15:16:33,524 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 15:16:33,524 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 15:16:33,524 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 15:16:33,525 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 15:16:33,525 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 15:16:33,527 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 15:16:33,527 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 15:16:33,528 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 15:16:33,528 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 15:16:33,528 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 15:16:33,528 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 15:16:33,528 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 15:16:33,532 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 15:16:33,532 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 15:16:33,533 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 15:16:33,533 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 15:16:33,533 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 15:16:33,533 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 15:16:33,533 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 15:16:33,533 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 15:16:33,533 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 15:16:33,534 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 15:16:33,534 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 15:16:33,534 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:16:33,534 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 15:16:33,534 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 15:16:33,534 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 15:16:33,534 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 15:16:33,535 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 15:16:33,535 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 15:16:33,535 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 15:16:33,535 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 15:16:33,535 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 15:16:33,535 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ee7ff83d9ca4f9baaadd009c98a7dd30697b6140296199117a6b05757b5b9f74 [2024-11-18 15:16:33,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 15:16:33,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 15:16:33,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 15:16:33,851 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 15:16:33,851 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 15:16:33,852 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-pthread/cs_dekker_unfair.i [2024-11-18 15:16:35,279 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 15:16:35,535 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 15:16:35,537 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_dekker_unfair.i [2024-11-18 15:16:35,558 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06a859883/397f8dc52df5445d997769027f0ede86/FLAGee56baf64 [2024-11-18 15:16:35,569 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06a859883/397f8dc52df5445d997769027f0ede86 [2024-11-18 15:16:35,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 15:16:35,572 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 15:16:35,578 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 15:16:35,578 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 15:16:35,583 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 15:16:35,583 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:16:35" (1/1) ... [2024-11-18 15:16:35,584 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@140c5df9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:16:35, skipping insertion in model container [2024-11-18 15:16:35,586 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:16:35" (1/1) ... [2024-11-18 15:16:35,635 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 15:16:35,934 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_dekker_unfair.i[23603,23616] [2024-11-18 15:16:36,064 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:16:36,079 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 15:16:36,111 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_dekker_unfair.i[23603,23616] [2024-11-18 15:16:36,171 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:16:36,207 INFO L204 MainTranslator]: Completed translation [2024-11-18 15:16:36,207 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:16:36 WrapperNode [2024-11-18 15:16:36,208 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 15:16:36,209 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 15:16:36,209 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 15:16:36,209 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 15:16:36,215 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:16:36" (1/1) ... [2024-11-18 15:16:36,248 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:16:36" (1/1) ... [2024-11-18 15:16:36,286 INFO L138 Inliner]: procedures = 145, calls = 309, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 463 [2024-11-18 15:16:36,287 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 15:16:36,291 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 15:16:36,291 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 15:16:36,292 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 15:16:36,305 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:16:36" (1/1) ... [2024-11-18 15:16:36,305 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:16:36" (1/1) ... [2024-11-18 15:16:36,318 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:16:36" (1/1) ... [2024-11-18 15:16:36,344 INFO L175 MemorySlicer]: Split 158 memory accesses to 18 slices as follows [2, 5, 8, 8, 8, 29, 21, 5, 7, 7, 9, 7, 13, 5, 13, 0, 6, 5]. 18 percent of accesses are in the largest equivalence class. The 43 initializations are split as follows [2, 0, 3, 3, 3, 9, 9, 0, 3, 3, 3, 3, 0, 0, 0, 0, 2, 0]. The 39 writes are split as follows [0, 1, 2, 2, 2, 11, 6, 1, 2, 2, 2, 2, 1, 1, 1, 0, 2, 1]. [2024-11-18 15:16:36,344 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:16:36" (1/1) ... [2024-11-18 15:16:36,344 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:16:36" (1/1) ... [2024-11-18 15:16:36,363 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:16:36" (1/1) ... [2024-11-18 15:16:36,366 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:16:36" (1/1) ... [2024-11-18 15:16:36,375 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:16:36" (1/1) ... [2024-11-18 15:16:36,379 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:16:36" (1/1) ... [2024-11-18 15:16:36,390 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 15:16:36,391 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 15:16:36,391 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 15:16:36,391 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 15:16:36,391 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:16:36" (1/1) ... [2024-11-18 15:16:36,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:16:36,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:16:36,424 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 15:16:36,427 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 15:16:36,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-18 15:16:36,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-18 15:16:36,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-18 15:16:36,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-18 15:16:36,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-18 15:16:36,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-18 15:16:36,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-18 15:16:36,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-18 15:16:36,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-18 15:16:36,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-18 15:16:36,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-18 15:16:36,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-18 15:16:36,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-18 15:16:36,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-11-18 15:16:36,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2024-11-18 15:16:36,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2024-11-18 15:16:36,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#16 [2024-11-18 15:16:36,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#17 [2024-11-18 15:16:36,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-18 15:16:36,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-18 15:16:36,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-18 15:16:36,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-18 15:16:36,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-18 15:16:36,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-18 15:16:36,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-18 15:16:36,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-18 15:16:36,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-18 15:16:36,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-18 15:16:36,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-18 15:16:36,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-18 15:16:36,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-18 15:16:36,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-11-18 15:16:36,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2024-11-18 15:16:36,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2024-11-18 15:16:36,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#16 [2024-11-18 15:16:36,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#17 [2024-11-18 15:16:36,497 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 15:16:36,497 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 15:16:36,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 15:16:36,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-18 15:16:36,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-18 15:16:36,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-18 15:16:36,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-18 15:16:36,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-18 15:16:36,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-18 15:16:36,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-18 15:16:36,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-18 15:16:36,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-18 15:16:36,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-18 15:16:36,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2024-11-18 15:16:36,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2024-11-18 15:16:36,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#11 [2024-11-18 15:16:36,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#12 [2024-11-18 15:16:36,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#13 [2024-11-18 15:16:36,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#14 [2024-11-18 15:16:36,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#15 [2024-11-18 15:16:36,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#16 [2024-11-18 15:16:36,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#17 [2024-11-18 15:16:36,499 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2024-11-18 15:16:36,499 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2024-11-18 15:16:36,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-18 15:16:36,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-18 15:16:36,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-18 15:16:36,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-18 15:16:36,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-18 15:16:36,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-18 15:16:36,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-18 15:16:36,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-18 15:16:36,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-18 15:16:36,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2024-11-18 15:16:36,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2024-11-18 15:16:36,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2024-11-18 15:16:36,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2024-11-18 15:16:36,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#13 [2024-11-18 15:16:36,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#14 [2024-11-18 15:16:36,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#15 [2024-11-18 15:16:36,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#16 [2024-11-18 15:16:36,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#17 [2024-11-18 15:16:36,502 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2024-11-18 15:16:36,502 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2024-11-18 15:16:36,502 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2024-11-18 15:16:36,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2024-11-18 15:16:36,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-18 15:16:36,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-18 15:16:36,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-18 15:16:36,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-18 15:16:36,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-18 15:16:36,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-18 15:16:36,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-18 15:16:36,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-18 15:16:36,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-18 15:16:36,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2024-11-18 15:16:36,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2024-11-18 15:16:36,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#10 [2024-11-18 15:16:36,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#11 [2024-11-18 15:16:36,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#12 [2024-11-18 15:16:36,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#13 [2024-11-18 15:16:36,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#14 [2024-11-18 15:16:36,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#15 [2024-11-18 15:16:36,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#16 [2024-11-18 15:16:36,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#17 [2024-11-18 15:16:36,505 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2024-11-18 15:16:36,506 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2024-11-18 15:16:36,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 15:16:36,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 15:16:36,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 15:16:36,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-18 15:16:36,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-18 15:16:36,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-18 15:16:36,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-18 15:16:36,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-18 15:16:36,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-18 15:16:36,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-18 15:16:36,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-18 15:16:36,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-18 15:16:36,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-18 15:16:36,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-18 15:16:36,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-18 15:16:36,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-18 15:16:36,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-18 15:16:36,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-18 15:16:36,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 15:16:36,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 15:16:36,707 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 15:16:36,708 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 15:16:41,234 INFO L? ?]: Removed 58 outVars from TransFormulas that were not future-live. [2024-11-18 15:16:41,235 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 15:16:41,245 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 15:16:41,245 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-18 15:16:41,246 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:16:41 BoogieIcfgContainer [2024-11-18 15:16:41,246 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 15:16:41,247 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 15:16:41,248 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 15:16:41,250 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 15:16:41,250 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 03:16:35" (1/3) ... [2024-11-18 15:16:41,251 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@283dce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:16:41, skipping insertion in model container [2024-11-18 15:16:41,251 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:16:36" (2/3) ... [2024-11-18 15:16:41,251 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@283dce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:16:41, skipping insertion in model container [2024-11-18 15:16:41,251 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:16:41" (3/3) ... [2024-11-18 15:16:41,253 INFO L112 eAbstractionObserver]: Analyzing ICFG cs_dekker_unfair.i [2024-11-18 15:16:41,266 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 15:16:41,266 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 15:16:41,349 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 15:16:41,355 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;@2c2ca0b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 15:16:41,356 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 15:16:41,359 INFO L276 IsEmpty]: Start isEmpty. Operand has 119 states, 77 states have (on average 1.3376623376623376) internal successors, (103), 78 states have internal predecessors, (103), 35 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-18 15:16:41,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-18 15:16:41,377 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:16:41,378 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:16:41,378 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:16:41,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:16:41,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1213115201, now seen corresponding path program 1 times [2024-11-18 15:16:41,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:16:41,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082358124] [2024-11-18 15:16:41,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:16:41,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:16:41,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:16:41,871 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 15:16:41,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:16:41,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082358124] [2024-11-18 15:16:41,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082358124] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:16:41,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:16:41,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 15:16:41,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500116646] [2024-11-18 15:16:41,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:16:41,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 15:16:41,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:16:41,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 15:16:41,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 15:16:41,925 INFO L87 Difference]: Start difference. First operand has 119 states, 77 states have (on average 1.3376623376623376) internal successors, (103), 78 states have internal predecessors, (103), 35 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 15:16:41,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:16:41,961 INFO L93 Difference]: Finished difference Result 236 states and 377 transitions. [2024-11-18 15:16:41,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 15:16:41,963 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 132 [2024-11-18 15:16:41,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:16:41,973 INFO L225 Difference]: With dead ends: 236 [2024-11-18 15:16:41,973 INFO L226 Difference]: Without dead ends: 115 [2024-11-18 15:16:41,977 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 15:16:41,979 INFO L432 NwaCegarLoop]: 169 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:16:41,980 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:16:41,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-18 15:16:42,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2024-11-18 15:16:42,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 74 states have (on average 1.2837837837837838) internal successors, (95), 74 states have internal predecessors, (95), 35 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-18 15:16:42,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 165 transitions. [2024-11-18 15:16:42,015 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 165 transitions. Word has length 132 [2024-11-18 15:16:42,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:16:42,015 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 165 transitions. [2024-11-18 15:16:42,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 15:16:42,015 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 165 transitions. [2024-11-18 15:16:42,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-18 15:16:42,019 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:16:42,020 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:16:42,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 15:16:42,020 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:16:42,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:16:42,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1001836267, now seen corresponding path program 1 times [2024-11-18 15:16:42,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:16:42,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091025809] [2024-11-18 15:16:42,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:16:42,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:16:42,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:16:42,297 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 15:16:42,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:16:42,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091025809] [2024-11-18 15:16:42,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091025809] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:16:42,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:16:42,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:16:42,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694335308] [2024-11-18 15:16:42,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:16:42,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:16:42,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:16:42,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:16:42,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:16:42,304 INFO L87 Difference]: Start difference. First operand 115 states and 165 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 15:16:42,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:16:42,362 INFO L93 Difference]: Finished difference Result 228 states and 328 transitions. [2024-11-18 15:16:42,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:16:42,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 132 [2024-11-18 15:16:42,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:16:42,365 INFO L225 Difference]: With dead ends: 228 [2024-11-18 15:16:42,365 INFO L226 Difference]: Without dead ends: 119 [2024-11-18 15:16:42,366 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 15:16:42,367 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 4 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:16:42,367 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 322 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:16:42,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-18 15:16:42,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 116. [2024-11-18 15:16:42,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 75 states have (on average 1.28) internal successors, (96), 75 states have internal predecessors, (96), 35 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-18 15:16:42,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 166 transitions. [2024-11-18 15:16:42,382 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 166 transitions. Word has length 132 [2024-11-18 15:16:42,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:16:42,383 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 166 transitions. [2024-11-18 15:16:42,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 15:16:42,383 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 166 transitions. [2024-11-18 15:16:42,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-18 15:16:42,388 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:16:42,388 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:16:42,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 15:16:42,388 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:16:42,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:16:42,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1502592579, now seen corresponding path program 1 times [2024-11-18 15:16:42,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:16:42,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522621034] [2024-11-18 15:16:42,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:16:42,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:16:42,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:16:42,697 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 15:16:42,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:16:42,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522621034] [2024-11-18 15:16:42,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522621034] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:16:42,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:16:42,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:16:42,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746843] [2024-11-18 15:16:42,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:16:42,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:16:42,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:16:42,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:16:42,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:16:42,703 INFO L87 Difference]: Start difference. First operand 116 states and 166 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 15:16:42,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:16:42,740 INFO L93 Difference]: Finished difference Result 231 states and 332 transitions. [2024-11-18 15:16:42,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:16:42,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 135 [2024-11-18 15:16:42,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:16:42,742 INFO L225 Difference]: With dead ends: 231 [2024-11-18 15:16:42,742 INFO L226 Difference]: Without dead ends: 118 [2024-11-18 15:16:42,743 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 15:16:42,744 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 1 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:16:42,744 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 323 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:16:42,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-18 15:16:42,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2024-11-18 15:16:42,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 76 states have (on average 1.2763157894736843) internal successors, (97), 76 states have internal predecessors, (97), 35 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-18 15:16:42,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 167 transitions. [2024-11-18 15:16:42,759 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 167 transitions. Word has length 135 [2024-11-18 15:16:42,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:16:42,760 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 167 transitions. [2024-11-18 15:16:42,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 15:16:42,761 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 167 transitions. [2024-11-18 15:16:42,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-18 15:16:42,765 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:16:42,765 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:16:42,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 15:16:42,765 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:16:42,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:16:42,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1195483263, now seen corresponding path program 1 times [2024-11-18 15:16:42,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:16:42,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686151703] [2024-11-18 15:16:42,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:16:42,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:16:42,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:16:42,993 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 15:16:42,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:16:42,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686151703] [2024-11-18 15:16:42,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686151703] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:16:42,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713230552] [2024-11-18 15:16:42,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:16:42,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:16:42,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:16:42,997 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 15:16:42,998 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 15:16:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:16:43,375 INFO L255 TraceCheckSpWp]: Trace formula consists of 945 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 15:16:43,384 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:16:43,428 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 15:16:43,428 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 15:16:43,530 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 15:16:43,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713230552] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 15:16:43,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 15:16:43,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-11-18 15:16:43,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111602969] [2024-11-18 15:16:43,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 15:16:43,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:16:43,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:16:43,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:16:43,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:16:43,533 INFO L87 Difference]: Start difference. First operand 117 states and 167 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-18 15:16:43,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:16:43,568 INFO L93 Difference]: Finished difference Result 235 states and 337 transitions. [2024-11-18 15:16:43,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 15:16:43,569 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 137 [2024-11-18 15:16:43,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:16:43,570 INFO L225 Difference]: With dead ends: 235 [2024-11-18 15:16:43,570 INFO L226 Difference]: Without dead ends: 121 [2024-11-18 15:16:43,571 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 271 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 15:16:43,575 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 1 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:16:43,576 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 643 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:16:43,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-18 15:16:43,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2024-11-18 15:16:43,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 80 states have (on average 1.2625) internal successors, (101), 80 states have internal predecessors, (101), 35 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-18 15:16:43,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 171 transitions. [2024-11-18 15:16:43,591 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 171 transitions. Word has length 137 [2024-11-18 15:16:43,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:16:43,592 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 171 transitions. [2024-11-18 15:16:43,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-18 15:16:43,592 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 171 transitions. [2024-11-18 15:16:43,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-18 15:16:43,593 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:16:43,593 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 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] [2024-11-18 15:16:43,623 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 15:16:43,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:16:43,795 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:16:43,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:16:43,795 INFO L85 PathProgramCache]: Analyzing trace with hash 14058627, now seen corresponding path program 2 times [2024-11-18 15:16:43,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:16:43,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502211102] [2024-11-18 15:16:43,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 15:16:43,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:16:43,892 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-18 15:16:43,894 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 15:16:44,027 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2024-11-18 15:16:44,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:16:44,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502211102] [2024-11-18 15:16:44,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502211102] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:16:44,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:16:44,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 15:16:44,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095534827] [2024-11-18 15:16:44,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:16:44,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 15:16:44,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:16:44,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 15:16:44,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 15:16:44,031 INFO L87 Difference]: Start difference. First operand 121 states and 171 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 15:16:44,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:16:44,068 INFO L93 Difference]: Finished difference Result 227 states and 328 transitions. [2024-11-18 15:16:44,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 15:16:44,069 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 141 [2024-11-18 15:16:44,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:16:44,072 INFO L225 Difference]: With dead ends: 227 [2024-11-18 15:16:44,074 INFO L226 Difference]: Without dead ends: 181 [2024-11-18 15:16:44,074 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 15:16:44,076 INFO L432 NwaCegarLoop]: 179 mSDtfsCounter, 107 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:16:44,076 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 508 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:16:44,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-18 15:16:44,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2024-11-18 15:16:44,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 121 states have (on average 1.3057851239669422) internal successors, (158), 121 states have internal predecessors, (158), 49 states have call successors, (49), 10 states have call predecessors, (49), 10 states have return successors, (53), 49 states have call predecessors, (53), 49 states have call successors, (53) [2024-11-18 15:16:44,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 260 transitions. [2024-11-18 15:16:44,097 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 260 transitions. Word has length 141 [2024-11-18 15:16:44,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:16:44,098 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 260 transitions. [2024-11-18 15:16:44,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 15:16:44,098 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 260 transitions. [2024-11-18 15:16:44,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-11-18 15:16:44,100 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:16:44,101 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:16:44,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 15:16:44,101 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:16:44,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:16:44,102 INFO L85 PathProgramCache]: Analyzing trace with hash 307641716, now seen corresponding path program 1 times [2024-11-18 15:16:44,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:16:44,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086152875] [2024-11-18 15:16:44,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:16:44,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:16:44,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:16:44,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1263 trivial. 0 not checked. [2024-11-18 15:16:44,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:16:44,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086152875] [2024-11-18 15:16:44,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086152875] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:16:44,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715761508] [2024-11-18 15:16:44,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:16:44,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:16:44,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:16:44,411 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 15:16:44,416 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 15:16:44,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:16:44,841 INFO L255 TraceCheckSpWp]: Trace formula consists of 1498 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 15:16:44,850 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:16:44,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1263 trivial. 0 not checked. [2024-11-18 15:16:44,883 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 15:16:45,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1263 trivial. 0 not checked. [2024-11-18 15:16:45,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715761508] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 15:16:45,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 15:16:45,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-11-18 15:16:45,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032416416] [2024-11-18 15:16:45,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 15:16:45,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:16:45,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:16:45,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:16:45,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:16:45,092 INFO L87 Difference]: Start difference. First operand 181 states and 260 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2024-11-18 15:16:45,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:16:45,140 INFO L93 Difference]: Finished difference Result 368 states and 528 transitions. [2024-11-18 15:16:45,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 15:16:45,141 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) Word has length 225 [2024-11-18 15:16:45,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:16:45,142 INFO L225 Difference]: With dead ends: 368 [2024-11-18 15:16:45,144 INFO L226 Difference]: Without dead ends: 199 [2024-11-18 15:16:45,145 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 447 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 15:16:45,145 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 4 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:16:45,146 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 640 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:16:45,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2024-11-18 15:16:45,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2024-11-18 15:16:45,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 139 states have (on average 1.2805755395683454) internal successors, (178), 139 states have internal predecessors, (178), 49 states have call successors, (49), 10 states have call predecessors, (49), 10 states have return successors, (53), 49 states have call predecessors, (53), 49 states have call successors, (53) [2024-11-18 15:16:45,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 280 transitions. [2024-11-18 15:16:45,162 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 280 transitions. Word has length 225 [2024-11-18 15:16:45,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:16:45,163 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 280 transitions. [2024-11-18 15:16:45,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2024-11-18 15:16:45,163 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 280 transitions. [2024-11-18 15:16:45,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-18 15:16:45,166 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:16:45,166 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 9, 9, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:16:45,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 15:16:45,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-18 15:16:45,369 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:16:45,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:16:45,369 INFO L85 PathProgramCache]: Analyzing trace with hash -611364236, now seen corresponding path program 2 times [2024-11-18 15:16:45,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:16:45,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245062942] [2024-11-18 15:16:45,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 15:16:45,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:16:45,465 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-18 15:16:45,466 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 15:16:45,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1365 trivial. 0 not checked. [2024-11-18 15:16:45,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:16:45,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245062942] [2024-11-18 15:16:45,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245062942] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:16:45,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:16:45,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 15:16:45,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403534477] [2024-11-18 15:16:45,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:16:45,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 15:16:45,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:16:45,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 15:16:45,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 15:16:45,647 INFO L87 Difference]: Start difference. First operand 199 states and 280 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2024-11-18 15:16:49,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:16:53,677 WARN L539 Checker$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 15:16:53,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:16:53,787 INFO L93 Difference]: Finished difference Result 509 states and 734 transitions. [2024-11-18 15:16:53,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 15:16:53,788 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 243 [2024-11-18 15:16:53,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:16:53,791 INFO L225 Difference]: With dead ends: 509 [2024-11-18 15:16:53,791 INFO L226 Difference]: Without dead ends: 357 [2024-11-18 15:16:53,793 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:16:53,793 INFO L432 NwaCegarLoop]: 261 mSDtfsCounter, 146 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2024-11-18 15:16:53,794 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 667 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 2 Unknown, 0 Unchecked, 8.1s Time] [2024-11-18 15:16:53,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2024-11-18 15:16:53,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 353. [2024-11-18 15:16:53,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 237 states have (on average 1.2911392405063291) internal successors, (306), 237 states have internal predecessors, (306), 95 states have call successors, (95), 20 states have call predecessors, (95), 20 states have return successors, (110), 95 states have call predecessors, (110), 95 states have call successors, (110) [2024-11-18 15:16:53,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 511 transitions. [2024-11-18 15:16:53,821 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 511 transitions. Word has length 243 [2024-11-18 15:16:53,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:16:53,821 INFO L471 AbstractCegarLoop]: Abstraction has 353 states and 511 transitions. [2024-11-18 15:16:53,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2024-11-18 15:16:53,822 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 511 transitions. [2024-11-18 15:16:53,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-18 15:16:53,825 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:16:53,825 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 9, 9, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:16:53,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 15:16:53,825 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:16:53,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:16:53,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1583191084, now seen corresponding path program 1 times [2024-11-18 15:16:53,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:16:53,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056466813] [2024-11-18 15:16:53,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:16:53,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:16:54,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:16:54,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1365 trivial. 0 not checked. [2024-11-18 15:16:54,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:16:54,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056466813] [2024-11-18 15:16:54,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056466813] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:16:54,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:16:54,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 15:16:54,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326268288] [2024-11-18 15:16:54,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:16:54,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 15:16:54,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:16:54,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 15:16:54,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 15:16:54,651 INFO L87 Difference]: Start difference. First operand 353 states and 511 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2024-11-18 15:16:58,662 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 15:16:59,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:16:59,227 INFO L93 Difference]: Finished difference Result 633 states and 908 transitions. [2024-11-18 15:16:59,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 15:16:59,228 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 243 [2024-11-18 15:16:59,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:16:59,231 INFO L225 Difference]: With dead ends: 633 [2024-11-18 15:16:59,231 INFO L226 Difference]: Without dead ends: 321 [2024-11-18 15:16:59,233 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:16:59,233 INFO L432 NwaCegarLoop]: 263 mSDtfsCounter, 142 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-18 15:16:59,233 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 671 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2024-11-18 15:16:59,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2024-11-18 15:16:59,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 317. [2024-11-18 15:16:59,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 213 states have (on average 1.244131455399061) internal successors, (265), 213 states have internal predecessors, (265), 85 states have call successors, (85), 18 states have call predecessors, (85), 18 states have return successors, (93), 85 states have call predecessors, (93), 85 states have call successors, (93) [2024-11-18 15:16:59,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 443 transitions. [2024-11-18 15:16:59,261 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 443 transitions. Word has length 243 [2024-11-18 15:16:59,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:16:59,262 INFO L471 AbstractCegarLoop]: Abstraction has 317 states and 443 transitions. [2024-11-18 15:16:59,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2024-11-18 15:16:59,262 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 443 transitions. [2024-11-18 15:16:59,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-18 15:16:59,268 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:16:59,268 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 9, 9, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:16:59,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 15:16:59,272 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:16:59,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:16:59,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1447908660, now seen corresponding path program 1 times [2024-11-18 15:16:59,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:16:59,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526183999] [2024-11-18 15:16:59,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:16:59,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:16:59,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:16:59,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1361 trivial. 0 not checked. [2024-11-18 15:16:59,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:16:59,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526183999] [2024-11-18 15:16:59,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526183999] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:16:59,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086537151] [2024-11-18 15:16:59,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:16:59,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:16:59,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:16:59,803 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 15:16:59,804 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 15:17:00,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:17:00,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 1784 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-18 15:17:00,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:17:00,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 219 proven. 0 refuted. 0 times theorem prover too weak. 1146 trivial. 0 not checked. [2024-11-18 15:17:00,518 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:17:00,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086537151] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:17:00,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:17:00,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2024-11-18 15:17:00,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281490824] [2024-11-18 15:17:00,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:17:00,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 15:17:00,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:17:00,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 15:17:00,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-18 15:17:00,520 INFO L87 Difference]: Start difference. First operand 317 states and 443 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2024-11-18 15:17:01,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:17:01,206 INFO L93 Difference]: Finished difference Result 824 states and 1153 transitions. [2024-11-18 15:17:01,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:17:01,207 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) Word has length 243 [2024-11-18 15:17:01,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:17:01,214 INFO L225 Difference]: With dead ends: 824 [2024-11-18 15:17:01,214 INFO L226 Difference]: Without dead ends: 532 [2024-11-18 15:17:01,215 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-11-18 15:17:01,216 INFO L432 NwaCegarLoop]: 194 mSDtfsCounter, 237 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 15:17:01,216 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 455 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 15:17:01,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2024-11-18 15:17:01,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 521. [2024-11-18 15:17:01,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 341 states have (on average 1.1700879765395895) internal successors, (399), 340 states have internal predecessors, (399), 142 states have call successors, (142), 31 states have call predecessors, (142), 37 states have return successors, (170), 149 states have call predecessors, (170), 142 states have call successors, (170) [2024-11-18 15:17:01,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 711 transitions. [2024-11-18 15:17:01,246 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 711 transitions. Word has length 243 [2024-11-18 15:17:01,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:17:01,246 INFO L471 AbstractCegarLoop]: Abstraction has 521 states and 711 transitions. [2024-11-18 15:17:01,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2024-11-18 15:17:01,247 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 711 transitions. [2024-11-18 15:17:01,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-18 15:17:01,249 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:17:01,250 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 9, 9, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:17:01,269 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 15:17:01,450 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 15:17:01,451 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:17:01,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:17:01,451 INFO L85 PathProgramCache]: Analyzing trace with hash -547394062, now seen corresponding path program 1 times [2024-11-18 15:17:01,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:17:01,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747094573] [2024-11-18 15:17:01,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:17:01,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:17:01,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:17:02,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1361 trivial. 0 not checked. [2024-11-18 15:17:02,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:17:02,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747094573] [2024-11-18 15:17:02,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747094573] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:17:02,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856862301] [2024-11-18 15:17:02,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:17:02,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:17:02,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:17:02,085 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 15:17:02,086 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 15:17:02,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:17:02,736 INFO L255 TraceCheckSpWp]: Trace formula consists of 1781 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 15:17:02,743 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:17:02,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 400 proven. 4 refuted. 0 times theorem prover too weak. 961 trivial. 0 not checked. [2024-11-18 15:17:02,833 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 15:17:03,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1361 trivial. 0 not checked. [2024-11-18 15:17:03,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856862301] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 15:17:03,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 15:17:03,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 11 [2024-11-18 15:17:03,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94124262] [2024-11-18 15:17:03,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 15:17:03,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 15:17:03,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:17:03,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 15:17:03,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-18 15:17:03,167 INFO L87 Difference]: Start difference. First operand 521 states and 711 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 9 states have call successors, (60), 5 states have call predecessors, (60), 6 states have return successors, (61), 7 states have call predecessors, (61), 9 states have call successors, (61) [2024-11-18 15:17:07,180 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 15:17:11,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:17:15,226 WARN L539 Checker$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 15:17:16,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:17:16,231 INFO L93 Difference]: Finished difference Result 1056 states and 1467 transitions. [2024-11-18 15:17:16,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 15:17:16,232 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 9 states have call successors, (60), 5 states have call predecessors, (60), 6 states have return successors, (61), 7 states have call predecessors, (61), 9 states have call successors, (61) Word has length 243 [2024-11-18 15:17:16,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:17:16,236 INFO L225 Difference]: With dead ends: 1056 [2024-11-18 15:17:16,236 INFO L226 Difference]: Without dead ends: 584 [2024-11-18 15:17:16,238 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 485 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 15:17:16,239 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 224 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 137 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2024-11-18 15:17:16,240 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 697 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 552 Invalid, 3 Unknown, 0 Unchecked, 12.9s Time] [2024-11-18 15:17:16,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2024-11-18 15:17:16,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 559. [2024-11-18 15:17:16,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 377 states have (on average 1.2015915119363396) internal successors, (453), 377 states have internal predecessors, (453), 126 states have call successors, (126), 44 states have call predecessors, (126), 55 states have return successors, (180), 137 states have call predecessors, (180), 126 states have call successors, (180) [2024-11-18 15:17:16,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 759 transitions. [2024-11-18 15:17:16,280 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 759 transitions. Word has length 243 [2024-11-18 15:17:16,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:17:16,281 INFO L471 AbstractCegarLoop]: Abstraction has 559 states and 759 transitions. [2024-11-18 15:17:16,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 9 states have call successors, (60), 5 states have call predecessors, (60), 6 states have return successors, (61), 7 states have call predecessors, (61), 9 states have call successors, (61) [2024-11-18 15:17:16,281 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 759 transitions. [2024-11-18 15:17:16,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-18 15:17:16,284 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:17:16,284 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 9, 9, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:17:16,304 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 15:17:16,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:17:16,489 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:17:16,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:17:16,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1616598994, now seen corresponding path program 1 times [2024-11-18 15:17:16,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:17:16,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145449704] [2024-11-18 15:17:16,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:17:16,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:17:16,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:17:18,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1361 trivial. 0 not checked. [2024-11-18 15:17:18,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:17:18,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145449704] [2024-11-18 15:17:18,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145449704] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:17:18,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943060175] [2024-11-18 15:17:18,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:17:18,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:17:18,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:17:18,901 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:17:18,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 15:17:19,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:17:19,517 INFO L255 TraceCheckSpWp]: Trace formula consists of 1879 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-18 15:17:19,524 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:17:19,754 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 15:17:27,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 15:17:27,276 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 15:17:27,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 48 [2024-11-18 15:17:28,149 INFO L349 Elim1Store]: treesize reduction 64, result has 54.9 percent of original size [2024-11-18 15:17:28,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 104 [2024-11-18 15:17:44,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 472 proven. 4 refuted. 0 times theorem prover too weak. 889 trivial. 0 not checked. [2024-11-18 15:17:44,442 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 15:17:44,659 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 15:17:44,664 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 15:17:49,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943060175] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:17:49,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-18 15:17:49,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 31 [2024-11-18 15:17:49,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574795763] [2024-11-18 15:17:49,766 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-18 15:17:49,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-18 15:17:49,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:17:49,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-18 15:17:49,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1124, Unknown=2, NotChecked=0, Total=1260 [2024-11-18 15:17:49,768 INFO L87 Difference]: Start difference. First operand 559 states and 759 transitions. Second operand has 31 states, 29 states have (on average 4.413793103448276) internal successors, (128), 28 states have internal predecessors, (128), 16 states have call successors, (62), 10 states have call predecessors, (62), 12 states have return successors, (62), 14 states have call predecessors, (62), 16 states have call successors, (62) [2024-11-18 15:17:53,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:17:57,871 WARN L539 Checker$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 15:18:01,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:18:05,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:18:09,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []