./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-pthread/cs_time_var_mutex.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/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_time_var_mutex.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 d5cca3532c956cbfb3f8d24df68dd431ff61516e63bcc0106c0529c479d6a4ef --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 03:04:15,075 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 03:04:15,131 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 03:04:15,135 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 03:04:15,137 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 03:04:15,164 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 03:04:15,164 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 03:04:15,165 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 03:04:15,166 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 03:04:15,168 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 03:04:15,168 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 03:04:15,179 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 03:04:15,180 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 03:04:15,180 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 03:04:15,180 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 03:04:15,180 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 03:04:15,180 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 03:04:15,180 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 03:04:15,181 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 03:04:15,181 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 03:04:15,181 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 03:04:15,182 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 03:04:15,182 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 03:04:15,182 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 03:04:15,182 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 03:04:15,182 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 03:04:15,182 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 03:04:15,183 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 03:04:15,183 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 03:04:15,183 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 03:04:15,183 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 03:04:15,183 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 03:04:15,183 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 03:04:15,183 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 03:04:15,184 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 03:04:15,184 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 03:04:15,184 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 03:04:15,184 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 03:04:15,184 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 03:04:15,184 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 03:04:15,184 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 03:04:15,185 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 03:04:15,185 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d5cca3532c956cbfb3f8d24df68dd431ff61516e63bcc0106c0529c479d6a4ef [2024-11-22 03:04:15,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 03:04:15,434 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 03:04:15,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 03:04:15,437 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 03:04:15,438 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 03:04:15,439 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-pthread/cs_time_var_mutex.i [2024-11-22 03:04:16,728 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 03:04:16,981 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 03:04:16,981 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_time_var_mutex.i [2024-11-22 03:04:17,000 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14f6af940/f31d8d1523c64feb966e95cf0dadfb73/FLAG8193da33d [2024-11-22 03:04:17,310 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14f6af940/f31d8d1523c64feb966e95cf0dadfb73 [2024-11-22 03:04:17,312 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 03:04:17,313 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 03:04:17,317 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 03:04:17,317 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 03:04:17,321 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 03:04:17,322 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:04:17" (1/1) ... [2024-11-22 03:04:17,322 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76524a18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:04:17, skipping insertion in model container [2024-11-22 03:04:17,323 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:04:17" (1/1) ... [2024-11-22 03:04:17,367 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 03:04:17,591 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_time_var_mutex.i[23611,23624] [2024-11-22 03:04:17,676 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 03:04:17,687 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 03:04:17,710 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_time_var_mutex.i[23611,23624] [2024-11-22 03:04:17,826 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 03:04:17,863 INFO L204 MainTranslator]: Completed translation [2024-11-22 03:04:17,864 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:04:17 WrapperNode [2024-11-22 03:04:17,864 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 03:04:17,865 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 03:04:17,865 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 03:04:17,865 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 03:04:17,870 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:04:17" (1/1) ... [2024-11-22 03:04:17,888 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:04:17" (1/1) ... [2024-11-22 03:04:17,925 INFO L138 Inliner]: procedures = 145, calls = 326, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 535 [2024-11-22 03:04:17,926 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 03:04:17,926 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 03:04:17,926 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 03:04:17,927 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 03:04:17,935 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:04:17" (1/1) ... [2024-11-22 03:04:17,936 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:04:17" (1/1) ... [2024-11-22 03:04:17,942 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:04:17" (1/1) ... [2024-11-22 03:04:17,966 INFO L175 MemorySlicer]: Split 173 memory accesses to 19 slices as follows [2, 5, 5, 8, 8, 8, 29, 5, 13, 21, 7, 5, 8, 8, 6, 5, 13, 0, 17]. 17 percent of accesses are in the largest equivalence class. The 46 initializations are split as follows [2, 0, 0, 3, 3, 3, 9, 0, 0, 9, 3, 0, 3, 3, 2, 0, 0, 0, 6]. The 43 writes are split as follows [0, 1, 1, 2, 2, 2, 11, 1, 1, 6, 2, 1, 2, 2, 2, 1, 1, 0, 5]. [2024-11-22 03:04:17,967 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:04:17" (1/1) ... [2024-11-22 03:04:17,967 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:04:17" (1/1) ... [2024-11-22 03:04:18,000 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:04:17" (1/1) ... [2024-11-22 03:04:18,008 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:04:17" (1/1) ... [2024-11-22 03:04:18,020 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:04:17" (1/1) ... [2024-11-22 03:04:18,024 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:04:17" (1/1) ... [2024-11-22 03:04:18,036 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 03:04:18,036 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 03:04:18,037 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 03:04:18,037 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 03:04:18,037 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:04:17" (1/1) ... [2024-11-22 03:04:18,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 03:04:18,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 03:04:18,069 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) [2024-11-22 03:04:18,074 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 [2024-11-22 03:04:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 03:04:18,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 03:04:18,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-22 03:04:18,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-22 03:04:18,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-22 03:04:18,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-22 03:04:18,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-22 03:04:18,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-22 03:04:18,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-22 03:04:18,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-22 03:04:18,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-22 03:04:18,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-22 03:04:18,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-22 03:04:18,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-11-22 03:04:18,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2024-11-22 03:04:18,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2024-11-22 03:04:18,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#16 [2024-11-22 03:04:18,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#17 [2024-11-22 03:04:18,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#18 [2024-11-22 03:04:18,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 03:04:18,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 03:04:18,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-22 03:04:18,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-22 03:04:18,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-22 03:04:18,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-22 03:04:18,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-22 03:04:18,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-22 03:04:18,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-22 03:04:18,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-22 03:04:18,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-22 03:04:18,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-22 03:04:18,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-22 03:04:18,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-11-22 03:04:18,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2024-11-22 03:04:18,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2024-11-22 03:04:18,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#16 [2024-11-22 03:04:18,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#17 [2024-11-22 03:04:18,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#18 [2024-11-22 03:04:18,125 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 03:04:18,125 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 03:04:18,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 03:04:18,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-22 03:04:18,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-22 03:04:18,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-22 03:04:18,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-22 03:04:18,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-22 03:04:18,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-22 03:04:18,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-22 03:04:18,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-22 03:04:18,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-22 03:04:18,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-22 03:04:18,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2024-11-22 03:04:18,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2024-11-22 03:04:18,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#11 [2024-11-22 03:04:18,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#12 [2024-11-22 03:04:18,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#13 [2024-11-22 03:04:18,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#14 [2024-11-22 03:04:18,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#15 [2024-11-22 03:04:18,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#16 [2024-11-22 03:04:18,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#17 [2024-11-22 03:04:18,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#18 [2024-11-22 03:04:18,127 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_init [2024-11-22 03:04:18,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_init [2024-11-22 03:04:18,127 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2024-11-22 03:04:18,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2024-11-22 03:04:18,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-22 03:04:18,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-22 03:04:18,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-22 03:04:18,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-22 03:04:18,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-22 03:04:18,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-22 03:04:18,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-22 03:04:18,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-22 03:04:18,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-22 03:04:18,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2024-11-22 03:04:18,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2024-11-22 03:04:18,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2024-11-22 03:04:18,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2024-11-22 03:04:18,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#13 [2024-11-22 03:04:18,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#14 [2024-11-22 03:04:18,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#15 [2024-11-22 03:04:18,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#16 [2024-11-22 03:04:18,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#17 [2024-11-22 03:04:18,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#18 [2024-11-22 03:04:18,129 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2024-11-22 03:04:18,129 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2024-11-22 03:04:18,129 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2024-11-22 03:04:18,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2024-11-22 03:04:18,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-22 03:04:18,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-22 03:04:18,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-22 03:04:18,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-22 03:04:18,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-22 03:04:18,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-22 03:04:18,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-22 03:04:18,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-22 03:04:18,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-22 03:04:18,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2024-11-22 03:04:18,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2024-11-22 03:04:18,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#10 [2024-11-22 03:04:18,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#11 [2024-11-22 03:04:18,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#12 [2024-11-22 03:04:18,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#13 [2024-11-22 03:04:18,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#14 [2024-11-22 03:04:18,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#15 [2024-11-22 03:04:18,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#16 [2024-11-22 03:04:18,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#17 [2024-11-22 03:04:18,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#18 [2024-11-22 03:04:18,131 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2024-11-22 03:04:18,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2024-11-22 03:04:18,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 03:04:18,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 03:04:18,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-22 03:04:18,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-22 03:04:18,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-22 03:04:18,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-22 03:04:18,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-22 03:04:18,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-22 03:04:18,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-22 03:04:18,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-22 03:04:18,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-22 03:04:18,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-22 03:04:18,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-22 03:04:18,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-22 03:04:18,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-22 03:04:18,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-22 03:04:18,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-22 03:04:18,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-22 03:04:18,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-22 03:04:18,132 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_destroy [2024-11-22 03:04:18,132 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_destroy [2024-11-22 03:04:18,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 03:04:18,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 03:04:18,337 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 03:04:18,339 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 03:04:19,388 INFO L? ?]: Removed 66 outVars from TransFormulas that were not future-live. [2024-11-22 03:04:19,388 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 03:04:19,402 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 03:04:19,402 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-22 03:04:19,403 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:04:19 BoogieIcfgContainer [2024-11-22 03:04:19,403 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 03:04:19,404 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 03:04:19,404 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 03:04:19,407 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 03:04:19,407 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:04:17" (1/3) ... [2024-11-22 03:04:19,408 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77c1bead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:04:19, skipping insertion in model container [2024-11-22 03:04:19,409 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:04:17" (2/3) ... [2024-11-22 03:04:19,409 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77c1bead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:04:19, skipping insertion in model container [2024-11-22 03:04:19,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:04:19" (3/3) ... [2024-11-22 03:04:19,412 INFO L112 eAbstractionObserver]: Analyzing ICFG cs_time_var_mutex.i [2024-11-22 03:04:19,426 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 03:04:19,427 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 03:04:19,490 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 03:04:19,496 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;@41df381d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 03:04:19,496 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 03:04:19,500 INFO L276 IsEmpty]: Start isEmpty. Operand has 146 states, 92 states have (on average 1.3369565217391304) internal successors, (123), 93 states have internal predecessors, (123), 45 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-22 03:04:19,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-22 03:04:19,521 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:04:19,524 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:04:19,524 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:04:19,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:04:19,530 INFO L85 PathProgramCache]: Analyzing trace with hash 68570125, now seen corresponding path program 1 times [2024-11-22 03:04:19,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:04:19,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539885247] [2024-11-22 03:04:19,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:04:19,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:04:19,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:04:20,067 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-22 03:04:20,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:04:20,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539885247] [2024-11-22 03:04:20,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539885247] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:04:20,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 03:04:20,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 03:04:20,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700290571] [2024-11-22 03:04:20,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:04:20,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 03:04:20,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:04:20,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 03:04:20,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 03:04:20,095 INFO L87 Difference]: Start difference. First operand has 146 states, 92 states have (on average 1.3369565217391304) internal successors, (123), 93 states have internal predecessors, (123), 45 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-22 03:04:20,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:04:20,172 INFO L93 Difference]: Finished difference Result 294 states and 471 transitions. [2024-11-22 03:04:20,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 03:04:20,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 144 [2024-11-22 03:04:20,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:04:20,185 INFO L225 Difference]: With dead ends: 294 [2024-11-22 03:04:20,185 INFO L226 Difference]: Without dead ends: 146 [2024-11-22 03:04:20,189 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 03:04:20,192 INFO L432 NwaCegarLoop]: 206 mSDtfsCounter, 4 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 409 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 [2024-11-22 03:04:20,193 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 409 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 03:04:20,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-11-22 03:04:20,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 143. [2024-11-22 03:04:20,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 90 states have (on average 1.288888888888889) internal successors, (116), 90 states have internal predecessors, (116), 45 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-22 03:04:20,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 206 transitions. [2024-11-22 03:04:20,232 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 206 transitions. Word has length 144 [2024-11-22 03:04:20,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:04:20,232 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 206 transitions. [2024-11-22 03:04:20,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-22 03:04:20,233 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 206 transitions. [2024-11-22 03:04:20,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-22 03:04:20,236 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:04:20,236 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:04:20,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 03:04:20,237 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:04:20,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:04:20,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1236582243, now seen corresponding path program 1 times [2024-11-22 03:04:20,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:04:20,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008681784] [2024-11-22 03:04:20,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:04:20,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:04:20,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:04:20,593 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-22 03:04:20,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:04:20,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008681784] [2024-11-22 03:04:20,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008681784] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:04:20,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 03:04:20,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 03:04:20,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649738127] [2024-11-22 03:04:20,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:04:20,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 03:04:20,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:04:20,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 03:04:20,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 03:04:20,597 INFO L87 Difference]: Start difference. First operand 143 states and 206 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-22 03:04:20,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:04:20,639 INFO L93 Difference]: Finished difference Result 285 states and 412 transitions. [2024-11-22 03:04:20,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 03:04:20,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 147 [2024-11-22 03:04:20,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:04:20,646 INFO L225 Difference]: With dead ends: 285 [2024-11-22 03:04:20,647 INFO L226 Difference]: Without dead ends: 145 [2024-11-22 03:04:20,648 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 03:04:20,650 INFO L432 NwaCegarLoop]: 203 mSDtfsCounter, 1 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 03:04:20,651 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 403 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 03:04:20,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-22 03:04:20,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 144. [2024-11-22 03:04:20,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 91 states have (on average 1.2857142857142858) internal successors, (117), 91 states have internal predecessors, (117), 45 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-22 03:04:20,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 207 transitions. [2024-11-22 03:04:20,676 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 207 transitions. Word has length 147 [2024-11-22 03:04:20,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:04:20,676 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 207 transitions. [2024-11-22 03:04:20,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-22 03:04:20,677 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 207 transitions. [2024-11-22 03:04:20,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-22 03:04:20,679 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:04:20,681 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:04:20,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 03:04:20,681 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:04:20,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:04:20,681 INFO L85 PathProgramCache]: Analyzing trace with hash 419692319, now seen corresponding path program 1 times [2024-11-22 03:04:20,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:04:20,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365144876] [2024-11-22 03:04:20,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:04:20,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:04:20,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:04:21,007 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-22 03:04:21,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:04:21,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365144876] [2024-11-22 03:04:21,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365144876] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 03:04:21,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946278937] [2024-11-22 03:04:21,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:04:21,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:04:21,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 03:04:21,013 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) [2024-11-22 03:04:21,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 03:04:21,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:04:21,409 INFO L255 TraceCheckSpWp]: Trace formula consists of 1033 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 03:04:21,416 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 03:04:21,459 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-22 03:04:21,463 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 03:04:21,617 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-22 03:04:21,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946278937] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 03:04:21,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 03:04:21,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-11-22 03:04:21,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50195255] [2024-11-22 03:04:21,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 03:04:21,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 03:04:21,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:04:21,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 03:04:21,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:04:21,622 INFO L87 Difference]: Start difference. First operand 144 states and 207 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 03:04:21,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:04:21,669 INFO L93 Difference]: Finished difference Result 289 states and 417 transitions. [2024-11-22 03:04:21,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 03:04:21,669 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 149 [2024-11-22 03:04:21,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:04:21,673 INFO L225 Difference]: With dead ends: 289 [2024-11-22 03:04:21,675 INFO L226 Difference]: Without dead ends: 148 [2024-11-22 03:04:21,676 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 295 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:04:21,677 INFO L432 NwaCegarLoop]: 203 mSDtfsCounter, 1 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 03:04:21,677 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 403 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 03:04:21,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-11-22 03:04:21,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2024-11-22 03:04:21,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 95 states have (on average 1.2736842105263158) internal successors, (121), 95 states have internal predecessors, (121), 45 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-22 03:04:21,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 211 transitions. [2024-11-22 03:04:21,696 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 211 transitions. Word has length 149 [2024-11-22 03:04:21,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:04:21,697 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 211 transitions. [2024-11-22 03:04:21,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 03:04:21,698 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 211 transitions. [2024-11-22 03:04:21,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-22 03:04:21,700 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:04:21,701 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:04:21,713 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 03:04:21,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:04:21,902 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:04:21,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:04:21,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1943589539, now seen corresponding path program 2 times [2024-11-22 03:04:21,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:04:21,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350348529] [2024-11-22 03:04:21,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 03:04:21,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:04:22,012 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 03:04:22,012 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 03:04:22,182 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 934 trivial. 0 not checked. [2024-11-22 03:04:22,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:04:22,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350348529] [2024-11-22 03:04:22,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350348529] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:04:22,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 03:04:22,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 03:04:22,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143761105] [2024-11-22 03:04:22,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:04:22,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 03:04:22,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:04:22,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 03:04:22,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 03:04:22,187 INFO L87 Difference]: Start difference. First operand 148 states and 211 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-22 03:04:22,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:04:22,238 INFO L93 Difference]: Finished difference Result 281 states and 410 transitions. [2024-11-22 03:04:22,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 03:04:22,239 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 153 [2024-11-22 03:04:22,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:04:22,245 INFO L225 Difference]: With dead ends: 281 [2024-11-22 03:04:22,246 INFO L226 Difference]: Without dead ends: 231 [2024-11-22 03:04:22,247 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 [2024-11-22 03:04:22,248 INFO L432 NwaCegarLoop]: 241 mSDtfsCounter, 142 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 673 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 [2024-11-22 03:04:22,248 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 673 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 03:04:22,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-11-22 03:04:22,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2024-11-22 03:04:22,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 149 states have (on average 1.3154362416107384) internal successors, (196), 149 states have internal predecessors, (196), 67 states have call successors, (67), 14 states have call predecessors, (67), 14 states have return successors, (73), 67 states have call predecessors, (73), 67 states have call successors, (73) [2024-11-22 03:04:22,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 336 transitions. [2024-11-22 03:04:22,276 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 336 transitions. Word has length 153 [2024-11-22 03:04:22,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:04:22,277 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 336 transitions. [2024-11-22 03:04:22,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-22 03:04:22,277 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 336 transitions. [2024-11-22 03:04:22,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2024-11-22 03:04:22,282 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:04:22,282 INFO L215 NwaCegarLoop]: trace histogram [29, 29, 29, 7, 7, 7, 7, 7, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:04:22,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 03:04:22,282 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:04:22,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:04:22,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1300094726, now seen corresponding path program 1 times [2024-11-22 03:04:22,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:04:22,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583354560] [2024-11-22 03:04:22,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:04:22,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:04:22,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:04:22,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1746 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1745 trivial. 0 not checked. [2024-11-22 03:04:22,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:04:22,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583354560] [2024-11-22 03:04:22,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583354560] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 03:04:22,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7893509] [2024-11-22 03:04:22,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:04:22,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:04:22,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 03:04:22,626 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) [2024-11-22 03:04:22,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 03:04:23,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:04:23,122 INFO L255 TraceCheckSpWp]: Trace formula consists of 1694 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 03:04:23,128 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 03:04:23,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1746 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1745 trivial. 0 not checked. [2024-11-22 03:04:23,156 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 03:04:23,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1746 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1745 trivial. 0 not checked. [2024-11-22 03:04:23,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7893509] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 03:04:23,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 03:04:23,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-11-22 03:04:23,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637515031] [2024-11-22 03:04:23,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 03:04:23,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 03:04:23,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:04:23,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 03:04:23,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:04:23,410 INFO L87 Difference]: Start difference. First operand 231 states and 336 transitions. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 2 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) [2024-11-22 03:04:23,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:04:23,459 INFO L93 Difference]: Finished difference Result 468 states and 680 transitions. [2024-11-22 03:04:23,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 03:04:23,459 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 2 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) Word has length 267 [2024-11-22 03:04:23,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:04:23,461 INFO L225 Difference]: With dead ends: 468 [2024-11-22 03:04:23,461 INFO L226 Difference]: Without dead ends: 249 [2024-11-22 03:04:23,462 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 531 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:04:23,462 INFO L432 NwaCegarLoop]: 202 mSDtfsCounter, 4 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 03:04:23,463 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 404 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 03:04:23,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2024-11-22 03:04:23,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2024-11-22 03:04:23,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 167 states have (on average 1.2934131736526946) internal successors, (216), 167 states have internal predecessors, (216), 67 states have call successors, (67), 14 states have call predecessors, (67), 14 states have return successors, (73), 67 states have call predecessors, (73), 67 states have call successors, (73) [2024-11-22 03:04:23,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 356 transitions. [2024-11-22 03:04:23,484 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 356 transitions. Word has length 267 [2024-11-22 03:04:23,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:04:23,485 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 356 transitions. [2024-11-22 03:04:23,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 2 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) [2024-11-22 03:04:23,486 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 356 transitions. [2024-11-22 03:04:23,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2024-11-22 03:04:23,491 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:04:23,491 INFO L215 NwaCegarLoop]: trace histogram [29, 29, 29, 9, 9, 7, 7, 7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:04:23,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 03:04:23,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:04:23,693 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:04:23,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:04:23,693 INFO L85 PathProgramCache]: Analyzing trace with hash -840057658, now seen corresponding path program 2 times [2024-11-22 03:04:23,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:04:23,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257164808] [2024-11-22 03:04:23,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 03:04:23,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:04:23,844 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 03:04:23,848 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 03:04:24,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1847 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1847 trivial. 0 not checked. [2024-11-22 03:04:24,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:04:24,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257164808] [2024-11-22 03:04:24,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257164808] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:04:24,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 03:04:24,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 03:04:24,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609724148] [2024-11-22 03:04:24,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:04:24,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 03:04:24,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:04:24,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 03:04:24,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 03:04:24,013 INFO L87 Difference]: Start difference. First operand 249 states and 356 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2024-11-22 03:04:28,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-22 03:04:32,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-22 03:04:32,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:04:32,124 INFO L93 Difference]: Finished difference Result 659 states and 962 transitions. [2024-11-22 03:04:32,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 03:04:32,125 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 285 [2024-11-22 03:04:32,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:04:32,128 INFO L225 Difference]: With dead ends: 659 [2024-11-22 03:04:32,128 INFO L226 Difference]: Without dead ends: 457 [2024-11-22 03:04:32,130 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 03:04:32,132 INFO L432 NwaCegarLoop]: 328 mSDtfsCounter, 186 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2024-11-22 03:04:32,133 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 840 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 2 Unknown, 0 Unchecked, 8.1s Time] [2024-11-22 03:04:32,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2024-11-22 03:04:32,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 453. [2024-11-22 03:04:32,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 293 states have (on average 1.3037542662116042) internal successors, (382), 293 states have internal predecessors, (382), 131 states have call successors, (131), 28 states have call predecessors, (131), 28 states have return successors, (150), 131 states have call predecessors, (150), 131 states have call successors, (150) [2024-11-22 03:04:32,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 663 transitions. [2024-11-22 03:04:32,167 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 663 transitions. Word has length 285 [2024-11-22 03:04:32,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:04:32,167 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 663 transitions. [2024-11-22 03:04:32,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2024-11-22 03:04:32,168 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 663 transitions. [2024-11-22 03:04:32,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2024-11-22 03:04:32,171 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:04:32,172 INFO L215 NwaCegarLoop]: trace histogram [29, 29, 29, 9, 9, 7, 7, 7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:04:32,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 03:04:32,172 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:04:32,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:04:32,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1974551654, now seen corresponding path program 1 times [2024-11-22 03:04:32,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:04:32,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180426053] [2024-11-22 03:04:32,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:04:32,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:04:32,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:04:32,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1847 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1847 trivial. 0 not checked. [2024-11-22 03:04:32,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:04:32,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180426053] [2024-11-22 03:04:32,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180426053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:04:32,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 03:04:32,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 03:04:32,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873093440] [2024-11-22 03:04:32,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:04:32,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 03:04:32,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:04:32,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 03:04:32,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 03:04:32,950 INFO L87 Difference]: Start difference. First operand 453 states and 663 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2024-11-22 03:04:36,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-22 03:04:40,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-22 03:04:41,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:04:41,116 INFO L93 Difference]: Finished difference Result 824 states and 1199 transitions. [2024-11-22 03:04:41,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 03:04:41,117 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 285 [2024-11-22 03:04:41,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:04:41,120 INFO L225 Difference]: With dead ends: 824 [2024-11-22 03:04:41,121 INFO L226 Difference]: Without dead ends: 412 [2024-11-22 03:04:41,122 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 03:04:41,123 INFO L432 NwaCegarLoop]: 330 mSDtfsCounter, 182 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2024-11-22 03:04:41,123 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 845 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 2 Unknown, 0 Unchecked, 8.1s Time] [2024-11-22 03:04:41,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2024-11-22 03:04:41,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 408. [2024-11-22 03:04:41,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 265 states have (on average 1.2528301886792452) internal successors, (332), 265 states have internal predecessors, (332), 117 states have call successors, (117), 25 states have call predecessors, (117), 25 states have return successors, (129), 117 states have call predecessors, (129), 117 states have call successors, (129) [2024-11-22 03:04:41,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 578 transitions. [2024-11-22 03:04:41,154 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 578 transitions. Word has length 285 [2024-11-22 03:04:41,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:04:41,154 INFO L471 AbstractCegarLoop]: Abstraction has 408 states and 578 transitions. [2024-11-22 03:04:41,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2024-11-22 03:04:41,155 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 578 transitions. [2024-11-22 03:04:41,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2024-11-22 03:04:41,158 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:04:41,158 INFO L215 NwaCegarLoop]: trace histogram [29, 29, 29, 9, 9, 7, 7, 7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:04:41,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 03:04:41,158 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:04:41,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:04:41,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1832629254, now seen corresponding path program 1 times [2024-11-22 03:04:41,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:04:41,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686407807] [2024-11-22 03:04:41,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:04:41,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:04:41,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:04:41,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1847 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1843 trivial. 0 not checked. [2024-11-22 03:04:41,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:04:41,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686407807] [2024-11-22 03:04:41,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686407807] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 03:04:41,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353080040] [2024-11-22 03:04:41,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:04:41,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:04:41,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 03:04:41,780 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) [2024-11-22 03:04:41,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 03:04:42,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:04:42,398 INFO L255 TraceCheckSpWp]: Trace formula consists of 2000 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-22 03:04:42,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 03:04:42,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1847 backedges. 616 proven. 4 refuted. 0 times theorem prover too weak. 1227 trivial. 0 not checked. [2024-11-22 03:04:42,542 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 03:04:43,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1847 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1843 trivial. 0 not checked. [2024-11-22 03:04:43,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353080040] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 03:04:43,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 03:04:43,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 11 [2024-11-22 03:04:43,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735281521] [2024-11-22 03:04:43,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 03:04:43,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 03:04:43,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:04:43,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 03:04:43,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-22 03:04:43,085 INFO L87 Difference]: Start difference. First operand 408 states and 578 transitions. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 9 states have call successors, (72), 5 states have call predecessors, (72), 6 states have return successors, (73), 7 states have call predecessors, (73), 9 states have call successors, (73) [2024-11-22 03:04:47,104 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 [] [2024-11-22 03:04:47,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:04:47,918 INFO L93 Difference]: Finished difference Result 801 states and 1158 transitions. [2024-11-22 03:04:47,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 03:04:47,919 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 9 states have call successors, (72), 5 states have call predecessors, (72), 6 states have return successors, (73), 7 states have call predecessors, (73), 9 states have call successors, (73) Word has length 285 [2024-11-22 03:04:47,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:04:47,922 INFO L225 Difference]: With dead ends: 801 [2024-11-22 03:04:47,922 INFO L226 Difference]: Without dead ends: 445 [2024-11-22 03:04:47,924 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 580 GetRequests, 569 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2024-11-22 03:04:47,924 INFO L432 NwaCegarLoop]: 202 mSDtfsCounter, 322 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 226 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-22 03:04:47,925 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 680 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 549 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2024-11-22 03:04:47,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2024-11-22 03:04:47,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 442. [2024-11-22 03:04:47,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 292 states have (on average 1.2808219178082192) internal successors, (374), 294 states have internal predecessors, (374), 113 states have call successors, (113), 34 states have call predecessors, (113), 36 states have return successors, (137), 113 states have call predecessors, (137), 113 states have call successors, (137) [2024-11-22 03:04:47,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 624 transitions. [2024-11-22 03:04:47,946 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 624 transitions. Word has length 285 [2024-11-22 03:04:47,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:04:47,947 INFO L471 AbstractCegarLoop]: Abstraction has 442 states and 624 transitions. [2024-11-22 03:04:47,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 9 states have call successors, (72), 5 states have call predecessors, (72), 6 states have return successors, (73), 7 states have call predecessors, (73), 9 states have call successors, (73) [2024-11-22 03:04:47,947 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 624 transitions. [2024-11-22 03:04:47,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2024-11-22 03:04:47,951 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:04:47,951 INFO L215 NwaCegarLoop]: trace histogram [29, 29, 29, 9, 9, 7, 7, 7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:04:47,968 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 03:04:48,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:04:48,152 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:04:48,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:04:48,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1095224806, now seen corresponding path program 1 times [2024-11-22 03:04:48,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:04:48,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630115103] [2024-11-22 03:04:48,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:04:48,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:04:48,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:04:50,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1847 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1843 trivial. 0 not checked. [2024-11-22 03:04:50,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:04:50,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630115103] [2024-11-22 03:04:50,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630115103] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 03:04:50,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442960789] [2024-11-22 03:04:50,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:04:50,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:04:50,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 03:04:50,239 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 03:04:50,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 03:04:50,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:04:50,876 INFO L255 TraceCheckSpWp]: Trace formula consists of 2098 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-22 03:04:50,885 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 03:04:51,182 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 [2024-11-22 03:04:55,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-22 03:04:55,586 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 03:04:55,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 15 [2024-11-22 03:04:57,327 INFO L349 Elim1Store]: treesize reduction 33, result has 25.0 percent of original size [2024-11-22 03:04:57,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2024-11-22 03:05:21,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1847 backedges. 742 proven. 4 refuted. 0 times theorem prover too weak. 1101 trivial. 0 not checked. [2024-11-22 03:05:21,762 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 03:05:22,032 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 [2024-11-22 03:05:22,037 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 [2024-11-22 03:05:26,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442960789] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 03:05:26,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 03:05:26,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 30 [2024-11-22 03:05:26,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168740792] [2024-11-22 03:05:26,969 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 03:05:26,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-22 03:05:26,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:05:26,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-22 03:05:26,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1065, Unknown=3, NotChecked=0, Total=1190 [2024-11-22 03:05:26,971 INFO L87 Difference]: Start difference. First operand 442 states and 624 transitions. Second operand has 30 states, 28 states have (on average 4.928571428571429) internal successors, (138), 27 states have internal predecessors, (138), 15 states have call successors, (74), 10 states have call predecessors, (74), 12 states have return successors, (74), 13 states have call predecessors, (74), 15 states have call successors, (74) [2024-11-22 03:05:29,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-22 03:05:33,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-22 03:05:37,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-22 03:05:41,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-22 03:05:42,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-22 03:05:46,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-22 03:05:50,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []