./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-pthread/cs_stack-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-pthread/cs_stack-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0a870e8a4a7dff1b238c9b19b47586f7abd44e3f0eb9969b7dad7bbd7f80e506 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 15:17:36,250 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 15:17:36,326 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 15:17:36,332 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 15:17:36,335 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 15:17:36,365 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 15:17:36,365 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 15:17:36,366 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 15:17:36,366 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 15:17:36,368 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 15:17:36,369 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 15:17:36,369 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 15:17:36,369 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 15:17:36,371 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 15:17:36,371 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 15:17:36,371 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 15:17:36,372 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 15:17:36,373 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 15:17:36,373 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 15:17:36,375 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 15:17:36,376 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 15:17:36,376 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 15:17:36,376 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 15:17:36,377 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 15:17:36,377 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 15:17:36,377 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 15:17:36,377 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 15:17:36,378 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 15:17:36,378 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 15:17:36,378 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 15:17:36,379 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 15:17:36,379 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 15:17:36,379 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:17:36,379 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 15:17:36,380 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 15:17:36,380 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 15:17:36,380 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 15:17:36,381 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 15:17:36,381 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 15:17:36,382 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 15:17:36,382 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 15:17:36,383 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 15:17:36,383 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a870e8a4a7dff1b238c9b19b47586f7abd44e3f0eb9969b7dad7bbd7f80e506 [2024-11-18 15:17:36,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 15:17:36,666 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 15:17:36,670 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 15:17:36,671 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 15:17:36,672 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 15:17:36,673 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-pthread/cs_stack-2.i [2024-11-18 15:17:38,113 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 15:17:38,424 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 15:17:38,426 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_stack-2.i [2024-11-18 15:17:38,456 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb812cf6b/224f99714e914b66a1ae3383c57aa382/FLAG1d8f279f2 [2024-11-18 15:17:38,685 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb812cf6b/224f99714e914b66a1ae3383c57aa382 [2024-11-18 15:17:38,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 15:17:38,689 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 15:17:38,691 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 15:17:38,692 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 15:17:38,698 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 15:17:38,699 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:17:38" (1/1) ... [2024-11-18 15:17:38,700 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2045bdbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:38, skipping insertion in model container [2024-11-18 15:17:38,701 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:17:38" (1/1) ... [2024-11-18 15:17:38,752 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 15:17:39,243 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_stack-2.i[34556,34569] [2024-11-18 15:17:39,375 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:17:39,397 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 15:17:39,454 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_stack-2.i[34556,34569] [2024-11-18 15:17:39,525 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:17:39,637 INFO L204 MainTranslator]: Completed translation [2024-11-18 15:17:39,638 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:39 WrapperNode [2024-11-18 15:17:39,638 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 15:17:39,639 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 15:17:39,639 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 15:17:39,640 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 15:17:39,645 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:39" (1/1) ... [2024-11-18 15:17:39,677 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:39" (1/1) ... [2024-11-18 15:17:39,723 INFO L138 Inliner]: procedures = 252, calls = 297, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 650 [2024-11-18 15:17:39,725 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 15:17:39,725 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 15:17:39,725 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 15:17:39,725 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 15:17:39,738 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:39" (1/1) ... [2024-11-18 15:17:39,738 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:39" (1/1) ... [2024-11-18 15:17:39,746 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:39" (1/1) ... [2024-11-18 15:17:39,805 INFO L175 MemorySlicer]: Split 148 memory accesses to 18 slices as follows [2, 8, 2, 8, 8, 20, 12, 10, 6, 8, 4, 20, 4, 6, 0, 6, 22, 2]. 15 percent of accesses are in the largest equivalence class. The 51 initializations are split as follows [2, 3, 0, 3, 3, 6, 6, 2, 2, 2, 2, 10, 0, 0, 0, 0, 10, 0]. The 33 writes are split as follows [0, 2, 0, 2, 2, 8, 3, 3, 2, 3, 0, 0, 2, 0, 0, 0, 6, 0]. [2024-11-18 15:17:39,805 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:39" (1/1) ... [2024-11-18 15:17:39,805 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:39" (1/1) ... [2024-11-18 15:17:39,841 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:39" (1/1) ... [2024-11-18 15:17:39,846 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:39" (1/1) ... [2024-11-18 15:17:39,854 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:39" (1/1) ... [2024-11-18 15:17:39,860 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:39" (1/1) ... [2024-11-18 15:17:39,871 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 15:17:39,872 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 15:17:39,876 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 15:17:39,876 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 15:17:39,877 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:39" (1/1) ... [2024-11-18 15:17:39,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:17:39,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:17:39,916 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 15:17:39,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 15:17:39,974 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 15:17:39,975 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 15:17:39,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-18 15:17:39,976 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_lock [2024-11-18 15:17:39,976 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_lock [2024-11-18 15:17:39,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-18 15:17:39,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-18 15:17:39,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-18 15:17:39,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-18 15:17:39,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-18 15:17:39,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-18 15:17:39,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-18 15:17:39,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-18 15:17:39,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-18 15:17:39,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2024-11-18 15:17:39,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2024-11-18 15:17:39,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2024-11-18 15:17:39,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2024-11-18 15:17:39,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#13 [2024-11-18 15:17:39,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#14 [2024-11-18 15:17:39,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#15 [2024-11-18 15:17:39,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#16 [2024-11-18 15:17:39,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#17 [2024-11-18 15:17:39,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-18 15:17:39,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-18 15:17:39,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-18 15:17:39,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-18 15:17:39,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-18 15:17:39,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-18 15:17:39,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-18 15:17:39,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-18 15:17:39,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-18 15:17:39,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2024-11-18 15:17:39,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2024-11-18 15:17:39,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#10 [2024-11-18 15:17:39,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#11 [2024-11-18 15:17:39,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#12 [2024-11-18 15:17:39,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#13 [2024-11-18 15:17:39,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#14 [2024-11-18 15:17:39,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#15 [2024-11-18 15:17:39,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#16 [2024-11-18 15:17:39,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#17 [2024-11-18 15:17:39,983 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_unlock [2024-11-18 15:17:39,984 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_unlock [2024-11-18 15:17:39,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-18 15:17:39,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-18 15:17:39,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-18 15:17:39,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-18 15:17:39,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-18 15:17:39,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-18 15:17:39,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-18 15:17:39,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-18 15:17:39,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-18 15:17:39,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-18 15:17:39,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-18 15:17:39,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-18 15:17:39,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-18 15:17:39,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-11-18 15:17:39,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2024-11-18 15:17:39,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2024-11-18 15:17:39,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#16 [2024-11-18 15:17:39,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#17 [2024-11-18 15:17:39,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-18 15:17:39,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-18 15:17:39,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-18 15:17:39,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-18 15:17:39,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-18 15:17:39,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-18 15:17:39,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-18 15:17:39,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-18 15:17:39,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-18 15:17:39,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-18 15:17:39,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-18 15:17:39,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-18 15:17:39,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-18 15:17:39,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-11-18 15:17:39,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2024-11-18 15:17:39,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2024-11-18 15:17:39,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#16 [2024-11-18 15:17:39,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#17 [2024-11-18 15:17:39,988 INFO L130 BoogieDeclarations]: Found specification of procedure get_top [2024-11-18 15:17:39,988 INFO L138 BoogieDeclarations]: Found implementation of procedure get_top [2024-11-18 15:17:39,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 15:17:39,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-18 15:17:39,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-18 15:17:39,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-18 15:17:39,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-18 15:17:39,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-18 15:17:39,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-18 15:17:39,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-18 15:17:39,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-18 15:17:39,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-18 15:17:39,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2024-11-18 15:17:39,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2024-11-18 15:17:39,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#11 [2024-11-18 15:17:39,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#12 [2024-11-18 15:17:39,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#13 [2024-11-18 15:17:39,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#14 [2024-11-18 15:17:39,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#15 [2024-11-18 15:17:39,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#16 [2024-11-18 15:17:39,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#17 [2024-11-18 15:17:39,990 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2024-11-18 15:17:39,990 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2024-11-18 15:17:39,990 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2024-11-18 15:17:39,990 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2024-11-18 15:17:39,990 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2024-11-18 15:17:39,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2024-11-18 15:17:39,990 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-11-18 15:17:39,990 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-11-18 15:17:39,990 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2024-11-18 15:17:39,990 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2024-11-18 15:17:39,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 15:17:39,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 15:17:39,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 15:17:39,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-18 15:17:39,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-18 15:17:39,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-18 15:17:39,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-18 15:17:39,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-18 15:17:39,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-18 15:17:39,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-18 15:17:39,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-18 15:17:39,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-18 15:17:39,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-18 15:17:39,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-18 15:17:39,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-18 15:17:39,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-18 15:17:39,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-18 15:17:39,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-18 15:17:39,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 15:17:39,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 15:17:40,260 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 15:17:40,262 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 15:17:40,311 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2024-11-18 15:17:40,312 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);#res := 0; [2024-11-18 15:17:40,775 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##97: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2024-11-18 15:17:40,776 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##96: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);push_#res#1 := 0; [2024-11-18 15:17:40,776 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##54: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2024-11-18 15:17:40,776 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##53: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);pop_#res#1 := 0; [2024-11-18 15:17:40,776 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##58: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2024-11-18 15:17:40,776 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##57: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);pop_#res#1 := 0; [2024-11-18 15:17:40,776 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2024-11-18 15:17:40,776 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##42: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);pop_#res#1 := 0; [2024-11-18 15:17:40,777 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint L1002: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);pop_#res#1 := 0; [2024-11-18 15:17:40,777 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint L1002: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296));pop_#res#1 := 0; [2024-11-18 15:17:40,777 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint L986-4: SUMMARY for call __CS_cs(); srcloc: null [2024-11-18 15:17:40,777 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##111: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);push_#res#1 := 0; [2024-11-18 15:17:40,777 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##112: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2024-11-18 15:17:40,796 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint L930-1: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296); [2024-11-18 15:17:40,796 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint L930-1: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2024-11-18 15:17:40,796 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2024-11-18 15:17:40,796 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296); [2024-11-18 15:17:40,796 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##7: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296); [2024-11-18 15:17:40,796 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2024-11-18 15:17:40,796 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2024-11-18 15:17:40,796 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296); [2024-11-18 15:17:40,796 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint L930: SUMMARY for call __CS_cs(); srcloc: null [2024-11-18 15:17:41,258 INFO L? ?]: Removed 92 outVars from TransFormulas that were not future-live. [2024-11-18 15:17:41,258 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 15:17:41,285 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 15:17:41,287 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-18 15:17:41,287 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:17:41 BoogieIcfgContainer [2024-11-18 15:17:41,288 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 15:17:41,290 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 15:17:41,290 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 15:17:41,295 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 15:17:41,295 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 03:17:38" (1/3) ... [2024-11-18 15:17:41,296 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27619355 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:17:41, skipping insertion in model container [2024-11-18 15:17:41,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:39" (2/3) ... [2024-11-18 15:17:41,297 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27619355 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:17:41, skipping insertion in model container [2024-11-18 15:17:41,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:17:41" (3/3) ... [2024-11-18 15:17:41,299 INFO L112 eAbstractionObserver]: Analyzing ICFG cs_stack-2.i [2024-11-18 15:17:41,317 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 15:17:41,317 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 15:17:41,402 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 15:17:41,411 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;@3a4fa876, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 15:17:41,412 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 15:17:41,417 INFO L276 IsEmpty]: Start isEmpty. Operand has 220 states, 134 states have (on average 1.5149253731343284) internal successors, (203), 137 states have internal predecessors, (203), 75 states have call successors, (75), 9 states have call predecessors, (75), 9 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2024-11-18 15:17:41,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-18 15:17:41,453 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:17:41,455 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:17:41,455 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:17:41,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:17:41,462 INFO L85 PathProgramCache]: Analyzing trace with hash 977295411, now seen corresponding path program 1 times [2024-11-18 15:17:41,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:17:41,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94559978] [2024-11-18 15:17:41,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:17:41,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:17:41,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:17:42,014 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2024-11-18 15:17:42,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:17:42,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94559978] [2024-11-18 15:17:42,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94559978] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:17:42,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890385406] [2024-11-18 15:17:42,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:17:42,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:17:42,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:17:42,021 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:17:42,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 15:17:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:17:42,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 15:17:42,473 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:17:42,492 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2024-11-18 15:17:42,492 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:17:42,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890385406] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:17:42,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:17:42,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 15:17:42,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567024803] [2024-11-18 15:17:42,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:17:42,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 15:17:42,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:17:42,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 15:17:42,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 15:17:42,531 INFO L87 Difference]: Start difference. First operand has 220 states, 134 states have (on average 1.5149253731343284) internal successors, (203), 137 states have internal predecessors, (203), 75 states have call successors, (75), 9 states have call predecessors, (75), 9 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-18 15:17:42,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:17:42,593 INFO L93 Difference]: Finished difference Result 436 states and 769 transitions. [2024-11-18 15:17:42,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 15:17:42,595 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 94 [2024-11-18 15:17:42,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:17:42,608 INFO L225 Difference]: With dead ends: 436 [2024-11-18 15:17:42,609 INFO L226 Difference]: Without dead ends: 216 [2024-11-18 15:17:42,616 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 95 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 15:17:42,620 INFO L432 NwaCegarLoop]: 349 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, 349 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 15:17:42,621 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:17:42,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-11-18 15:17:42,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2024-11-18 15:17:42,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 131 states have (on average 1.4885496183206106) internal successors, (195), 133 states have internal predecessors, (195), 75 states have call successors, (75), 9 states have call predecessors, (75), 9 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2024-11-18 15:17:42,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 345 transitions. [2024-11-18 15:17:42,689 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 345 transitions. Word has length 94 [2024-11-18 15:17:42,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:17:42,689 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 345 transitions. [2024-11-18 15:17:42,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-18 15:17:42,689 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 345 transitions. [2024-11-18 15:17:42,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-18 15:17:42,698 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:17:42,699 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:17:42,721 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 15:17:42,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 15:17:42,900 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:17:42,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:17:42,901 INFO L85 PathProgramCache]: Analyzing trace with hash 362813975, now seen corresponding path program 1 times [2024-11-18 15:17:42,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:17:42,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385516526] [2024-11-18 15:17:42,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:17:42,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:17:43,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:17:43,600 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-18 15:17:43,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:17:43,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385516526] [2024-11-18 15:17:43,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385516526] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:17:43,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:17:43,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 15:17:43,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818613833] [2024-11-18 15:17:43,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:17:43,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 15:17:43,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:17:43,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 15:17:43,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 15:17:43,606 INFO L87 Difference]: Start difference. First operand 216 states and 345 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-18 15:17:43,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:17:43,699 INFO L93 Difference]: Finished difference Result 428 states and 693 transitions. [2024-11-18 15:17:43,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 15:17:43,700 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 94 [2024-11-18 15:17:43,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:17:43,711 INFO L225 Difference]: With dead ends: 428 [2024-11-18 15:17:43,711 INFO L226 Difference]: Without dead ends: 394 [2024-11-18 15:17:43,712 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:17:43,714 INFO L432 NwaCegarLoop]: 370 mSDtfsCounter, 304 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:17:43,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 1075 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:17:43,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2024-11-18 15:17:43,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 393. [2024-11-18 15:17:43,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 239 states have (on average 1.5230125523012552) internal successors, (364), 243 states have internal predecessors, (364), 135 states have call successors, (135), 18 states have call predecessors, (135), 18 states have return successors, (143), 135 states have call predecessors, (143), 135 states have call successors, (143) [2024-11-18 15:17:43,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 642 transitions. [2024-11-18 15:17:43,771 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 642 transitions. Word has length 94 [2024-11-18 15:17:43,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:17:43,772 INFO L471 AbstractCegarLoop]: Abstraction has 393 states and 642 transitions. [2024-11-18 15:17:43,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-18 15:17:43,773 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 642 transitions. [2024-11-18 15:17:43,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-18 15:17:43,783 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:17:43,783 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 5, 5, 5, 5, 5, 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] [2024-11-18 15:17:43,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 15:17:43,784 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:17:43,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:17:43,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1750031014, now seen corresponding path program 1 times [2024-11-18 15:17:43,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:17:43,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854582546] [2024-11-18 15:17:43,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:17:43,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:17:43,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:17:44,602 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 738 trivial. 0 not checked. [2024-11-18 15:17:44,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:17:44,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854582546] [2024-11-18 15:17:44,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854582546] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:17:44,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:17:44,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 15:17:44,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240331307] [2024-11-18 15:17:44,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:17:44,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:17:44,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:17:44,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:17:44,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:17:44,607 INFO L87 Difference]: Start difference. First operand 393 states and 642 transitions. Second operand has 5 states, 4 states have (on average 13.0) internal successors, (52), 5 states have internal predecessors, (52), 4 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2024-11-18 15:17:45,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:17:45,243 INFO L93 Difference]: Finished difference Result 832 states and 1359 transitions. [2024-11-18 15:17:45,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 15:17:45,244 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.0) internal successors, (52), 5 states have internal predecessors, (52), 4 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) Word has length 177 [2024-11-18 15:17:45,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:17:45,254 INFO L225 Difference]: With dead ends: 832 [2024-11-18 15:17:45,254 INFO L226 Difference]: Without dead ends: 794 [2024-11-18 15:17:45,255 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 15:17:45,258 INFO L432 NwaCegarLoop]: 415 mSDtfsCounter, 339 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 1518 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 15:17:45,259 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 1518 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 15:17:45,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2024-11-18 15:17:45,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 787. [2024-11-18 15:17:45,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 478 states have (on average 1.5209205020920502) internal successors, (727), 489 states have internal predecessors, (727), 269 states have call successors, (269), 36 states have call predecessors, (269), 39 states have return successors, (301), 269 states have call predecessors, (301), 269 states have call successors, (301) [2024-11-18 15:17:45,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 1297 transitions. [2024-11-18 15:17:45,379 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 1297 transitions. Word has length 177 [2024-11-18 15:17:45,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:17:45,380 INFO L471 AbstractCegarLoop]: Abstraction has 787 states and 1297 transitions. [2024-11-18 15:17:45,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.0) internal successors, (52), 5 states have internal predecessors, (52), 4 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2024-11-18 15:17:45,381 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 1297 transitions. [2024-11-18 15:17:45,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-18 15:17:45,387 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:17:45,388 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:17:45,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 15:17:45,388 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:17:45,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:17:45,389 INFO L85 PathProgramCache]: Analyzing trace with hash 641085175, now seen corresponding path program 1 times [2024-11-18 15:17:45,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:17:45,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243821499] [2024-11-18 15:17:45,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:17:45,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:17:45,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:17:45,971 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 734 trivial. 0 not checked. [2024-11-18 15:17:45,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:17:45,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243821499] [2024-11-18 15:17:45,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243821499] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:17:45,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:17:45,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 15:17:45,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333255005] [2024-11-18 15:17:45,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:17:45,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:17:45,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:17:45,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:17:45,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:17:45,976 INFO L87 Difference]: Start difference. First operand 787 states and 1297 transitions. Second operand has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 4 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-18 15:17:50,063 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 15:17:50,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:17:50,470 INFO L93 Difference]: Finished difference Result 841 states and 1371 transitions. [2024-11-18 15:17:50,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 15:17:50,471 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 4 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 173 [2024-11-18 15:17:50,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:17:50,479 INFO L225 Difference]: With dead ends: 841 [2024-11-18 15:17:50,479 INFO L226 Difference]: Without dead ends: 803 [2024-11-18 15:17:50,481 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 15:17:50,482 INFO L432 NwaCegarLoop]: 393 mSDtfsCounter, 409 mSDsluCounter, 1026 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 54 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-18 15:17:50,483 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 1419 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 105 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2024-11-18 15:17:50,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2024-11-18 15:17:50,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 787. [2024-11-18 15:17:50,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 478 states have (on average 1.5209205020920502) internal successors, (727), 489 states have internal predecessors, (727), 269 states have call successors, (269), 36 states have call predecessors, (269), 39 states have return successors, (301), 269 states have call predecessors, (301), 269 states have call successors, (301) [2024-11-18 15:17:50,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 1297 transitions. [2024-11-18 15:17:50,556 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 1297 transitions. Word has length 173 [2024-11-18 15:17:50,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:17:50,556 INFO L471 AbstractCegarLoop]: Abstraction has 787 states and 1297 transitions. [2024-11-18 15:17:50,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 4 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-18 15:17:50,557 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 1297 transitions. [2024-11-18 15:17:50,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-18 15:17:50,564 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:17:50,564 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:17:50,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 15:17:50,564 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:17:50,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:17:50,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1524736289, now seen corresponding path program 1 times [2024-11-18 15:17:50,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:17:50,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686784187] [2024-11-18 15:17:50,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:17:50,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:17:50,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:17:51,071 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 734 trivial. 0 not checked. [2024-11-18 15:17:51,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:17:51,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686784187] [2024-11-18 15:17:51,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686784187] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:17:51,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:17:51,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 15:17:51,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606746339] [2024-11-18 15:17:51,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:17:51,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:17:51,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:17:51,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:17:51,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:17:51,075 INFO L87 Difference]: Start difference. First operand 787 states and 1297 transitions. Second operand has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 4 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-18 15:17:55,206 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 15:17:55,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:17:55,608 INFO L93 Difference]: Finished difference Result 1563 states and 2558 transitions. [2024-11-18 15:17:55,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 15:17:55,609 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 4 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 173 [2024-11-18 15:17:55,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:17:55,615 INFO L225 Difference]: With dead ends: 1563 [2024-11-18 15:17:55,616 INFO L226 Difference]: Without dead ends: 780 [2024-11-18 15:17:55,620 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 15:17:55,621 INFO L432 NwaCegarLoop]: 393 mSDtfsCounter, 411 mSDsluCounter, 1029 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 54 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 1422 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-18 15:17:55,621 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 1422 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 101 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2024-11-18 15:17:55,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2024-11-18 15:17:55,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 770. [2024-11-18 15:17:55,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 469 states have (on average 1.5138592750533049) internal successors, (710), 480 states have internal predecessors, (710), 261 states have call successors, (261), 35 states have call predecessors, (261), 39 states have return successors, (287), 262 states have call predecessors, (287), 261 states have call successors, (287) [2024-11-18 15:17:55,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 1258 transitions. [2024-11-18 15:17:55,686 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 1258 transitions. Word has length 173 [2024-11-18 15:17:55,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:17:55,686 INFO L471 AbstractCegarLoop]: Abstraction has 770 states and 1258 transitions. [2024-11-18 15:17:55,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 4 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-18 15:17:55,687 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 1258 transitions. [2024-11-18 15:17:55,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-18 15:17:55,696 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:17:55,696 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 5, 5, 5, 5, 5, 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] [2024-11-18 15:17:55,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 15:17:55,697 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:17:55,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:17:55,697 INFO L85 PathProgramCache]: Analyzing trace with hash 2021848762, now seen corresponding path program 1 times [2024-11-18 15:17:55,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:17:55,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664032570] [2024-11-18 15:17:55,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:17:55,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:17:55,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:17:56,263 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 734 trivial. 0 not checked. [2024-11-18 15:17:56,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:17:56,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664032570] [2024-11-18 15:17:56,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664032570] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:17:56,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199165450] [2024-11-18 15:17:56,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:17:56,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:17:56,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:17:56,266 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:17:56,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 15:17:56,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:17:56,765 INFO L255 TraceCheckSpWp]: Trace formula consists of 1268 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 15:17:56,773 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:17:56,895 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 280 proven. 4 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2024-11-18 15:17:56,895 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 15:17:57,281 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 734 trivial. 0 not checked. [2024-11-18 15:17:57,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199165450] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 15:17:57,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 15:17:57,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 11 [2024-11-18 15:17:57,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938320448] [2024-11-18 15:17:57,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 15:17:57,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 15:17:57,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:17:57,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 15:17:57,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-18 15:17:57,284 INFO L87 Difference]: Start difference. First operand 770 states and 1258 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 9 states have call successors, (48), 5 states have call predecessors, (48), 6 states have return successors, (49), 7 states have call predecessors, (49), 9 states have call successors, (49) [2024-11-18 15:18:01,412 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 15:18:05,417 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 15:18:07,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:18:07,401 INFO L93 Difference]: Finished difference Result 1935 states and 3152 transitions. [2024-11-18 15:18:07,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 15:18:07,402 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 9 states have call successors, (48), 5 states have call predecessors, (48), 6 states have return successors, (49), 7 states have call predecessors, (49), 9 states have call successors, (49) Word has length 177 [2024-11-18 15:18:07,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:18:07,414 INFO L225 Difference]: With dead ends: 1935 [2024-11-18 15:18:07,415 INFO L226 Difference]: Without dead ends: 1169 [2024-11-18 15:18:07,421 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 353 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 15:18:07,423 INFO L432 NwaCegarLoop]: 314 mSDtfsCounter, 770 mSDsluCounter, 1337 mSDsCounter, 0 mSdLazyCounter, 1546 mSolverCounterSat, 457 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 1651 SdHoareTripleChecker+Invalid, 2005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 457 IncrementalHoareTripleChecker+Valid, 1546 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2024-11-18 15:18:07,423 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [855 Valid, 1651 Invalid, 2005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [457 Valid, 1546 Invalid, 2 Unknown, 0 Unchecked, 9.9s Time] [2024-11-18 15:18:07,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2024-11-18 15:18:07,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1148. [2024-11-18 15:18:07,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1148 states, 699 states have (on average 1.496423462088698) internal successors, (1046), 717 states have internal predecessors, (1046), 386 states have call successors, (386), 57 states have call predecessors, (386), 62 states have return successors, (427), 385 states have call predecessors, (427), 386 states have call successors, (427) [2024-11-18 15:18:07,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 1859 transitions. [2024-11-18 15:18:07,522 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 1859 transitions. Word has length 177 [2024-11-18 15:18:07,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:18:07,522 INFO L471 AbstractCegarLoop]: Abstraction has 1148 states and 1859 transitions. [2024-11-18 15:18:07,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 9 states have call successors, (48), 5 states have call predecessors, (48), 6 states have return successors, (49), 7 states have call predecessors, (49), 9 states have call successors, (49) [2024-11-18 15:18:07,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 1859 transitions. [2024-11-18 15:18:07,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-18 15:18:07,531 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:18:07,531 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:18:07,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 15:18:07,735 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 15:18:07,736 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:18:07,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:18:07,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1103441803, now seen corresponding path program 1 times [2024-11-18 15:18:07,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:18:07,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891033986] [2024-11-18 15:18:07,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:18:07,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:18:07,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:18:08,358 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 734 trivial. 0 not checked. [2024-11-18 15:18:08,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:18:08,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891033986] [2024-11-18 15:18:08,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891033986] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:18:08,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:18:08,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 15:18:08,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139902812] [2024-11-18 15:18:08,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:18:08,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:18:08,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:18:08,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:18:08,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:18:08,361 INFO L87 Difference]: Start difference. First operand 1148 states and 1859 transitions. Second operand has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 4 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-18 15:18:12,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:18:13,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:18:13,102 INFO L93 Difference]: Finished difference Result 1576 states and 2507 transitions. [2024-11-18 15:18:13,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 15:18:13,103 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 4 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 173 [2024-11-18 15:18:13,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:18:13,113 INFO L225 Difference]: With dead ends: 1576 [2024-11-18 15:18:13,114 INFO L226 Difference]: Without dead ends: 1057 [2024-11-18 15:18:13,118 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 15:18:13,119 INFO L432 NwaCegarLoop]: 342 mSDtfsCounter, 429 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 86 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-18 15:18:13,119 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 1079 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 311 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2024-11-18 15:18:13,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2024-11-18 15:18:13,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 1044. [2024-11-18 15:18:13,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1044 states, 638 states have (on average 1.4780564263322884) internal successors, (943), 653 states have internal predecessors, (943), 344 states have call successors, (344), 57 states have call predecessors, (344), 61 states have return successors, (380), 343 states have call predecessors, (380), 344 states have call successors, (380) [2024-11-18 15:18:13,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 1667 transitions. [2024-11-18 15:18:13,213 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 1667 transitions. Word has length 173 [2024-11-18 15:18:13,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:18:13,214 INFO L471 AbstractCegarLoop]: Abstraction has 1044 states and 1667 transitions. [2024-11-18 15:18:13,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 4 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-18 15:18:13,214 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 1667 transitions. [2024-11-18 15:18:13,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-18 15:18:13,223 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:18:13,224 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 5, 5, 5, 5, 5, 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] [2024-11-18 15:18:13,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 15:18:13,224 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:18:13,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:18:13,225 INFO L85 PathProgramCache]: Analyzing trace with hash 886233306, now seen corresponding path program 1 times [2024-11-18 15:18:13,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:18:13,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647103605] [2024-11-18 15:18:13,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:18:13,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:18:13,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:18:14,922 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 734 trivial. 0 not checked. [2024-11-18 15:18:14,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:18:14,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647103605] [2024-11-18 15:18:14,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647103605] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:18:14,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772866716] [2024-11-18 15:18:14,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:18:14,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:18:14,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:18:14,925 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 15:18:14,927 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 15:18:15,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:18:15,418 INFO L255 TraceCheckSpWp]: Trace formula consists of 1366 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-18 15:18:15,426 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:18:15,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-18 15:18:24,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 15:18:24,873 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 15:18:24,873 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 15:18:29,092 INFO L349 Elim1Store]: treesize reduction 64, result has 54.9 percent of original size [2024-11-18 15:18:29,092 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 15:18:56,431 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 352 proven. 4 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2024-11-18 15:18:56,431 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 15:18:56,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2024-11-18 15:18:56,701 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 15:19:04,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-18 15:19:04,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2024-11-18 15:19:05,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-18 15:19:05,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2024-11-18 15:19:06,454 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 734 trivial. 0 not checked. [2024-11-18 15:19:06,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772866716] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 15:19:06,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 15:19:06,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 10] total 39 [2024-11-18 15:19:06,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661464048] [2024-11-18 15:19:06,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 15:19:06,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-18 15:19:06,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:19:06,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-18 15:19:06,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1320, Unknown=5, NotChecked=0, Total=1482 [2024-11-18 15:19:06,458 INFO L87 Difference]: Start difference. First operand 1044 states and 1667 transitions. Second operand has 39 states, 36 states have (on average 3.75) internal successors, (135), 37 states have internal predecessors, (135), 19 states have call successors, (59), 12 states have call predecessors, (59), 14 states have return successors, (59), 17 states have call predecessors, (59), 19 states have call successors, (59)