./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/lunarlander_51_unsafe.c-amalgamation.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/lunarlander_51_unsafe.c-amalgamation.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 735ff62cc6090d232f302272937d02270cbaf8e856665ea5e0dc00b5f58a8493 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 23:03:49,849 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 23:03:49,931 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 23:03:49,937 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 23:03:49,937 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 23:03:49,967 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 23:03:49,968 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 23:03:49,968 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 23:03:49,969 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 23:03:49,972 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 23:03:49,973 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 23:03:49,973 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 23:03:49,974 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 23:03:49,974 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 23:03:49,974 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 23:03:49,974 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 23:03:49,975 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 23:03:49,975 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 23:03:49,975 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 23:03:49,975 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 23:03:49,975 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 23:03:49,978 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 23:03:49,979 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 23:03:49,979 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 23:03:49,979 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 23:03:49,979 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 23:03:49,980 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 23:03:49,980 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 23:03:49,980 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 23:03:49,981 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 23:03:49,981 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 23:03:49,981 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 23:03:49,982 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 23:03:49,982 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 23:03:49,982 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 23:03:49,983 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 23:03:49,983 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 23:03:49,983 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 23:03:49,984 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 23:03:49,984 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 23:03:49,984 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 23:03:49,985 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 23:03:49,985 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 735ff62cc6090d232f302272937d02270cbaf8e856665ea5e0dc00b5f58a8493 [2024-10-23 23:03:50,253 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 23:03:50,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 23:03:50,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 23:03:50,283 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 23:03:50,284 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 23:03:50,285 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/lunarlander_51_unsafe.c-amalgamation.i [2024-10-23 23:03:51,648 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 23:03:52,011 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 23:03:52,012 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/lunarlander_51_unsafe.c-amalgamation.i [2024-10-23 23:03:52,041 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53dee281c/99fcb3024195479e8ce2743cd2432612/FLAG3c78d65fe [2024-10-23 23:03:52,206 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53dee281c/99fcb3024195479e8ce2743cd2432612 [2024-10-23 23:03:52,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 23:03:52,209 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 23:03:52,212 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 23:03:52,212 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 23:03:52,218 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 23:03:52,218 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:03:52" (1/1) ... [2024-10-23 23:03:52,221 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bdd40f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:03:52, skipping insertion in model container [2024-10-23 23:03:52,221 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:03:52" (1/1) ... [2024-10-23 23:03:52,301 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 23:03:53,001 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/lunarlander_51_unsafe.c-amalgamation.i[64322,64335] [2024-10-23 23:03:53,260 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 23:03:53,413 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 23:03:53,473 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/lunarlander_51_unsafe.c-amalgamation.i[64322,64335] [2024-10-23 23:03:53,559 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 23:03:53,836 INFO L204 MainTranslator]: Completed translation [2024-10-23 23:03:53,837 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:03:53 WrapperNode [2024-10-23 23:03:53,837 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 23:03:53,838 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 23:03:53,839 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 23:03:53,839 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 23:03:53,845 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:03:53" (1/1) ... [2024-10-23 23:03:53,963 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:03:53" (1/1) ... [2024-10-23 23:03:54,147 INFO L138 Inliner]: procedures = 620, calls = 5148, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 5468 [2024-10-23 23:03:54,148 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 23:03:54,149 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 23:03:54,149 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 23:03:54,149 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 23:03:54,160 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:03:53" (1/1) ... [2024-10-23 23:03:54,160 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:03:53" (1/1) ... [2024-10-23 23:03:54,211 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:03:53" (1/1) ... [2024-10-23 23:03:54,277 INFO L175 MemorySlicer]: Split 5123 memory accesses to 12 slices as follows [2, 7, 513, 65, 4097, 65, 257, 3, 5, 14, 70, 25]. 80 percent of accesses are in the largest equivalence class. The 5077 initializations are split as follows [2, 7, 512, 64, 4096, 64, 256, 0, 4, 8, 64, 0]. The 14 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 1, 0, 3, 2, 8]. [2024-10-23 23:03:54,277 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:03:53" (1/1) ... [2024-10-23 23:03:54,277 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:03:53" (1/1) ... [2024-10-23 23:03:54,380 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:03:53" (1/1) ... [2024-10-23 23:03:54,390 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:03:53" (1/1) ... [2024-10-23 23:03:54,417 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:03:53" (1/1) ... [2024-10-23 23:03:54,430 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:03:53" (1/1) ... [2024-10-23 23:03:54,474 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 23:03:54,476 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 23:03:54,477 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 23:03:54,477 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 23:03:54,478 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:03:53" (1/1) ... [2024-10-23 23:03:54,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 23:03:54,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:03:54,513 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) [2024-10-23 23:03:54,519 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 [2024-10-23 23:03:54,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-10-23 23:03:54,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-10-23 23:03:54,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-10-23 23:03:54,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-10-23 23:03:54,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-10-23 23:03:54,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2024-10-23 23:03:54,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2024-10-23 23:03:54,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2024-10-23 23:03:54,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2024-10-23 23:03:54,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2024-10-23 23:03:54,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2024-10-23 23:03:54,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2024-10-23 23:03:54,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-23 23:03:54,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2024-10-23 23:03:54,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2024-10-23 23:03:54,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2024-10-23 23:03:54,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2024-10-23 23:03:54,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2024-10-23 23:03:54,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2024-10-23 23:03:54,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2024-10-23 23:03:54,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2024-10-23 23:03:54,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2024-10-23 23:03:54,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#9 [2024-10-23 23:03:54,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#10 [2024-10-23 23:03:54,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#11 [2024-10-23 23:03:54,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2024-10-23 23:03:54,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2024-10-23 23:03:54,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2024-10-23 23:03:54,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2024-10-23 23:03:54,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2024-10-23 23:03:54,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2024-10-23 23:03:54,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2024-10-23 23:03:54,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2024-10-23 23:03:54,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2024-10-23 23:03:54,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#9 [2024-10-23 23:03:54,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#10 [2024-10-23 23:03:54,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#11 [2024-10-23 23:03:54,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 23:03:54,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 23:03:54,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 23:03:54,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-23 23:03:54,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 23:03:54,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-23 23:03:54,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-23 23:03:54,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-23 23:03:54,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-23 23:03:54,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-23 23:03:54,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-23 23:03:54,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-23 23:03:54,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-23 23:03:54,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-23 23:03:54,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-23 23:03:54,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-10-23 23:03:54,846 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 23:03:54,848 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 23:04:01,480 INFO L? ?]: Removed 142 outVars from TransFormulas that were not future-live. [2024-10-23 23:04:01,480 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 23:04:01,806 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 23:04:01,807 INFO L314 CfgBuilder]: Removed 12 assume(true) statements. [2024-10-23 23:04:01,807 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:04:01 BoogieIcfgContainer [2024-10-23 23:04:01,808 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 23:04:01,810 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 23:04:01,810 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 23:04:01,813 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 23:04:01,814 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 11:03:52" (1/3) ... [2024-10-23 23:04:01,814 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76dd21e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:04:01, skipping insertion in model container [2024-10-23 23:04:01,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:03:53" (2/3) ... [2024-10-23 23:04:01,815 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76dd21e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:04:01, skipping insertion in model container [2024-10-23 23:04:01,816 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:04:01" (3/3) ... [2024-10-23 23:04:01,817 INFO L112 eAbstractionObserver]: Analyzing ICFG lunarlander_51_unsafe.c-amalgamation.i [2024-10-23 23:04:01,833 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 23:04:01,834 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 23:04:01,898 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 23:04:01,907 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;@32dc9c7f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 23:04:01,908 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 23:04:01,912 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 56 states have (on average 1.7857142857142858) internal successors, (100), 57 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:01,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-23 23:04:01,919 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:04:01,920 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:04:01,920 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:04:01,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:04:01,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1219428462, now seen corresponding path program 1 times [2024-10-23 23:04:01,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:04:01,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541490908] [2024-10-23 23:04:01,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:04:01,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:04:02,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:04:03,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 23:04:03,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:04:03,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541490908] [2024-10-23 23:04:03,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541490908] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 23:04:03,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 23:04:03,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 23:04:03,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140936512] [2024-10-23 23:04:03,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:04:03,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 23:04:03,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:04:03,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 23:04:03,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 23:04:03,102 INFO L87 Difference]: Start difference. First operand has 58 states, 56 states have (on average 1.7857142857142858) internal successors, (100), 57 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:03,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:04:03,385 INFO L93 Difference]: Finished difference Result 113 states and 195 transitions. [2024-10-23 23:04:03,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 23:04:03,388 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-10-23 23:04:03,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:04:03,395 INFO L225 Difference]: With dead ends: 113 [2024-10-23 23:04:03,395 INFO L226 Difference]: Without dead ends: 56 [2024-10-23 23:04:03,398 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 23:04:03,401 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 23:04:03,401 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 59 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 23:04:03,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-10-23 23:04:03,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-10-23 23:04:03,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.4) internal successors, (77), 55 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:03,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 77 transitions. [2024-10-23 23:04:03,437 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 77 transitions. Word has length 39 [2024-10-23 23:04:03,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:04:03,437 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 77 transitions. [2024-10-23 23:04:03,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:03,438 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 77 transitions. [2024-10-23 23:04:03,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-23 23:04:03,439 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:04:03,439 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:04:03,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 23:04:03,440 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:04:03,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:04:03,465 INFO L85 PathProgramCache]: Analyzing trace with hash -481557306, now seen corresponding path program 1 times [2024-10-23 23:04:03,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:04:03,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680523354] [2024-10-23 23:04:03,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:04:03,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:04:03,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:04:04,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 23:04:04,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:04:04,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680523354] [2024-10-23 23:04:04,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680523354] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 23:04:04,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 23:04:04,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 23:04:04,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43185881] [2024-10-23 23:04:04,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:04:04,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 23:04:04,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:04:04,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 23:04:04,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 23:04:04,238 INFO L87 Difference]: Start difference. First operand 56 states and 77 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:04,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:04:04,613 INFO L93 Difference]: Finished difference Result 104 states and 143 transitions. [2024-10-23 23:04:04,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 23:04:04,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-10-23 23:04:04,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:04:04,614 INFO L225 Difference]: With dead ends: 104 [2024-10-23 23:04:04,615 INFO L226 Difference]: Without dead ends: 56 [2024-10-23 23:04:04,615 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 [2024-10-23 23:04:04,616 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 0 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-23 23:04:04,616 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 112 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-23 23:04:04,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-10-23 23:04:04,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-10-23 23:04:04,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.3818181818181818) internal successors, (76), 55 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:04,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 76 transitions. [2024-10-23 23:04:04,629 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 76 transitions. Word has length 39 [2024-10-23 23:04:04,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:04:04,630 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 76 transitions. [2024-10-23 23:04:04,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:04,630 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 76 transitions. [2024-10-23 23:04:04,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-23 23:04:04,631 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:04:04,631 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:04:04,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 23:04:04,631 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:04:04,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:04:04,632 INFO L85 PathProgramCache]: Analyzing trace with hash -756316920, now seen corresponding path program 1 times [2024-10-23 23:04:04,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:04:04,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150414787] [2024-10-23 23:04:04,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:04:04,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:04:04,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:04:05,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 23:04:05,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:04:05,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150414787] [2024-10-23 23:04:05,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150414787] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 23:04:05,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 23:04:05,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 23:04:05,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149817017] [2024-10-23 23:04:05,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:04:05,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 23:04:05,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:04:05,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 23:04:05,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 23:04:05,689 INFO L87 Difference]: Start difference. First operand 56 states and 76 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:06,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:04:06,055 INFO L93 Difference]: Finished difference Result 87 states and 120 transitions. [2024-10-23 23:04:06,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 23:04:06,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-10-23 23:04:06,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:04:06,059 INFO L225 Difference]: With dead ends: 87 [2024-10-23 23:04:06,059 INFO L226 Difference]: Without dead ends: 57 [2024-10-23 23:04:06,060 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 [2024-10-23 23:04:06,060 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-23 23:04:06,062 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 112 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-23 23:04:06,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-10-23 23:04:06,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-10-23 23:04:06,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.375) internal successors, (77), 56 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:06,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 77 transitions. [2024-10-23 23:04:06,071 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 77 transitions. Word has length 39 [2024-10-23 23:04:06,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:04:06,072 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 77 transitions. [2024-10-23 23:04:06,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:06,072 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 77 transitions. [2024-10-23 23:04:06,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-23 23:04:06,074 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:04:06,074 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:04:06,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 23:04:06,075 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:04:06,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:04:06,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1790905389, now seen corresponding path program 1 times [2024-10-23 23:04:06,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:04:06,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118728813] [2024-10-23 23:04:06,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:04:06,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:04:06,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:04:07,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 23:04:07,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:04:07,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118728813] [2024-10-23 23:04:07,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118728813] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:04:07,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571570966] [2024-10-23 23:04:07,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:04:07,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:04:07,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:04:07,290 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) [2024-10-23 23:04:07,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-23 23:04:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:04:08,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 5933 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-23 23:04:08,865 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:04:08,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 23:04:08,899 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:04:08,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-23 23:04:08,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571570966] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 23:04:08,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 23:04:08,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-23 23:04:08,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350024434] [2024-10-23 23:04:08,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:04:08,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 23:04:08,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:04:08,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 23:04:08,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 23:04:08,918 INFO L87 Difference]: Start difference. First operand 57 states and 77 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:09,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:04:09,246 INFO L93 Difference]: Finished difference Result 78 states and 106 transitions. [2024-10-23 23:04:09,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 23:04:09,246 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-10-23 23:04:09,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:04:09,247 INFO L225 Difference]: With dead ends: 78 [2024-10-23 23:04:09,247 INFO L226 Difference]: Without dead ends: 58 [2024-10-23 23:04:09,248 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 23:04:09,249 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 3 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 23:04:09,249 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 108 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 23:04:09,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-10-23 23:04:09,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-10-23 23:04:09,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.368421052631579) internal successors, (78), 57 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:09,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 78 transitions. [2024-10-23 23:04:09,254 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 78 transitions. Word has length 40 [2024-10-23 23:04:09,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:04:09,254 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 78 transitions. [2024-10-23 23:04:09,255 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:09,255 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 78 transitions. [2024-10-23 23:04:09,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-23 23:04:09,256 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:04:09,256 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:04:09,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-23 23:04:09,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:04:09,463 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:04:09,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:04:09,463 INFO L85 PathProgramCache]: Analyzing trace with hash -793809956, now seen corresponding path program 1 times [2024-10-23 23:04:09,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:04:09,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53058902] [2024-10-23 23:04:09,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:04:09,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:04:09,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:04:10,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-23 23:04:10,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:04:10,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53058902] [2024-10-23 23:04:10,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53058902] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:04:10,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942874622] [2024-10-23 23:04:10,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:04:10,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:04:10,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:04:10,458 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) [2024-10-23 23:04:10,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-23 23:04:11,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:04:11,816 INFO L255 TraceCheckSpWp]: Trace formula consists of 5951 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-23 23:04:11,820 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:04:11,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-23 23:04:11,834 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:04:11,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-23 23:04:11,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942874622] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 23:04:11,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 23:04:11,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-23 23:04:11,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338820374] [2024-10-23 23:04:11,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:04:11,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 23:04:11,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:04:11,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 23:04:11,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 23:04:11,856 INFO L87 Difference]: Start difference. First operand 58 states and 78 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:12,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:04:12,127 INFO L93 Difference]: Finished difference Result 69 states and 92 transitions. [2024-10-23 23:04:12,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 23:04:12,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-10-23 23:04:12,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:04:12,128 INFO L225 Difference]: With dead ends: 69 [2024-10-23 23:04:12,128 INFO L226 Difference]: Without dead ends: 59 [2024-10-23 23:04:12,128 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 23:04:12,131 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 3 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 23:04:12,131 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 108 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 23:04:12,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-10-23 23:04:12,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-10-23 23:04:12,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.3620689655172413) internal successors, (79), 58 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:12,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 79 transitions. [2024-10-23 23:04:12,139 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 79 transitions. Word has length 43 [2024-10-23 23:04:12,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:04:12,139 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 79 transitions. [2024-10-23 23:04:12,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:12,140 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 79 transitions. [2024-10-23 23:04:12,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-23 23:04:12,142 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:04:12,142 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:04:12,168 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-23 23:04:12,342 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 [2024-10-23 23:04:12,343 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:04:12,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:04:12,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1367907231, now seen corresponding path program 1 times [2024-10-23 23:04:12,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:04:12,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648009344] [2024-10-23 23:04:12,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:04:12,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:04:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:04:13,379 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-23 23:04:13,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:04:13,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648009344] [2024-10-23 23:04:13,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648009344] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:04:13,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451356831] [2024-10-23 23:04:13,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:04:13,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:04:13,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:04:13,385 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) [2024-10-23 23:04:13,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-23 23:04:14,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:04:14,687 INFO L255 TraceCheckSpWp]: Trace formula consists of 5969 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-23 23:04:14,695 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:04:14,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-23 23:04:14,713 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:04:14,725 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-23 23:04:14,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451356831] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 23:04:14,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 23:04:14,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-23 23:04:14,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728641641] [2024-10-23 23:04:14,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:04:14,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 23:04:14,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:04:14,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 23:04:14,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 23:04:14,728 INFO L87 Difference]: Start difference. First operand 59 states and 79 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:14,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:04:14,961 INFO L93 Difference]: Finished difference Result 86 states and 116 transitions. [2024-10-23 23:04:14,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 23:04:14,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-10-23 23:04:14,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:04:14,962 INFO L225 Difference]: With dead ends: 86 [2024-10-23 23:04:14,962 INFO L226 Difference]: Without dead ends: 60 [2024-10-23 23:04:14,962 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 23:04:14,963 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 6 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 23:04:14,963 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 108 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 23:04:14,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-10-23 23:04:14,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-10-23 23:04:14,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.3559322033898304) internal successors, (80), 59 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:14,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 80 transitions. [2024-10-23 23:04:14,968 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 80 transitions. Word has length 46 [2024-10-23 23:04:14,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:04:14,968 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 80 transitions. [2024-10-23 23:04:14,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:14,969 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 80 transitions. [2024-10-23 23:04:14,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-23 23:04:14,970 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:04:14,970 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:04:14,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-23 23:04:15,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:04:15,171 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:04:15,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:04:15,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1170803542, now seen corresponding path program 1 times [2024-10-23 23:04:15,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:04:15,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381762943] [2024-10-23 23:04:15,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:04:15,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:04:15,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:04:16,248 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-23 23:04:16,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:04:16,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381762943] [2024-10-23 23:04:16,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381762943] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:04:16,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415821980] [2024-10-23 23:04:16,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:04:16,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:04:16,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:04:16,253 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) [2024-10-23 23:04:16,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-23 23:04:17,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:04:17,408 INFO L255 TraceCheckSpWp]: Trace formula consists of 5975 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 23:04:17,412 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:04:17,438 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-23 23:04:17,438 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:04:17,454 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 23:04:17,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415821980] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 23:04:17,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 23:04:17,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-23 23:04:17,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314129531] [2024-10-23 23:04:17,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:04:17,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 23:04:17,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:04:17,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 23:04:17,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-23 23:04:17,456 INFO L87 Difference]: Start difference. First operand 60 states and 80 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:17,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:04:17,771 INFO L93 Difference]: Finished difference Result 76 states and 101 transitions. [2024-10-23 23:04:17,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 23:04:17,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-10-23 23:04:17,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:04:17,772 INFO L225 Difference]: With dead ends: 76 [2024-10-23 23:04:17,772 INFO L226 Difference]: Without dead ends: 61 [2024-10-23 23:04:17,773 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-23 23:04:17,773 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 6 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 23:04:17,773 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 108 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 23:04:17,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-10-23 23:04:17,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-10-23 23:04:17,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.35) internal successors, (81), 60 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:17,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 81 transitions. [2024-10-23 23:04:17,778 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 81 transitions. Word has length 49 [2024-10-23 23:04:17,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:04:17,779 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 81 transitions. [2024-10-23 23:04:17,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:17,779 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 81 transitions. [2024-10-23 23:04:17,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-23 23:04:17,780 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:04:17,780 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:04:17,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-23 23:04:17,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:04:17,981 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:04:17,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:04:17,981 INFO L85 PathProgramCache]: Analyzing trace with hash 559835403, now seen corresponding path program 1 times [2024-10-23 23:04:17,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:04:17,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668902096] [2024-10-23 23:04:17,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:04:17,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:04:18,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:04:18,984 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 23:04:18,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:04:18,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668902096] [2024-10-23 23:04:18,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668902096] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:04:18,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379628001] [2024-10-23 23:04:18,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:04:18,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:04:18,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:04:18,988 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:04:18,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-23 23:04:20,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:04:20,186 INFO L255 TraceCheckSpWp]: Trace formula consists of 5981 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 23:04:20,190 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:04:20,223 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 23:04:20,223 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:04:20,239 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-23 23:04:20,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379628001] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 23:04:20,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 23:04:20,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-23 23:04:20,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247774945] [2024-10-23 23:04:20,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:04:20,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 23:04:20,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:04:20,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 23:04:20,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-23 23:04:20,241 INFO L87 Difference]: Start difference. First operand 61 states and 81 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:20,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:04:20,484 INFO L93 Difference]: Finished difference Result 66 states and 86 transitions. [2024-10-23 23:04:20,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 23:04:20,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-10-23 23:04:20,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:04:20,486 INFO L225 Difference]: With dead ends: 66 [2024-10-23 23:04:20,486 INFO L226 Difference]: Without dead ends: 62 [2024-10-23 23:04:20,486 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-23 23:04:20,486 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 6 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 23:04:20,487 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 108 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 23:04:20,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-10-23 23:04:20,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-10-23 23:04:20,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.3442622950819672) internal successors, (82), 61 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:20,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 82 transitions. [2024-10-23 23:04:20,493 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 82 transitions. Word has length 52 [2024-10-23 23:04:20,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:04:20,493 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 82 transitions. [2024-10-23 23:04:20,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:20,497 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 82 transitions. [2024-10-23 23:04:20,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-23 23:04:20,498 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:04:20,498 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:04:20,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-23 23:04:20,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:04:20,699 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:04:20,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:04:20,700 INFO L85 PathProgramCache]: Analyzing trace with hash 948688438, now seen corresponding path program 1 times [2024-10-23 23:04:20,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:04:20,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331846132] [2024-10-23 23:04:20,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:04:20,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:04:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:04:21,580 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-23 23:04:21,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:04:21,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331846132] [2024-10-23 23:04:21,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331846132] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:04:21,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489860686] [2024-10-23 23:04:21,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:04:21,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:04:21,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:04:21,583 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:04:21,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-23 23:04:22,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:04:22,836 INFO L255 TraceCheckSpWp]: Trace formula consists of 5987 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-23 23:04:22,840 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:04:22,867 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 23:04:22,867 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:04:22,894 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-23 23:04:22,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489860686] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 23:04:22,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 23:04:22,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 5] total 8 [2024-10-23 23:04:22,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244427326] [2024-10-23 23:04:22,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:04:22,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 23:04:22,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:04:22,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 23:04:22,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-23 23:04:22,900 INFO L87 Difference]: Start difference. First operand 62 states and 82 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:23,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:04:23,206 INFO L93 Difference]: Finished difference Result 72 states and 95 transitions. [2024-10-23 23:04:23,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 23:04:23,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-10-23 23:04:23,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:04:23,208 INFO L225 Difference]: With dead ends: 72 [2024-10-23 23:04:23,208 INFO L226 Difference]: Without dead ends: 63 [2024-10-23 23:04:23,208 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-23 23:04:23,209 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 7 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 23:04:23,209 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 160 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 23:04:23,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-10-23 23:04:23,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-10-23 23:04:23,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.3387096774193548) internal successors, (83), 62 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:23,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 83 transitions. [2024-10-23 23:04:23,218 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 83 transitions. Word has length 55 [2024-10-23 23:04:23,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:04:23,218 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 83 transitions. [2024-10-23 23:04:23,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:23,219 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 83 transitions. [2024-10-23 23:04:23,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-23 23:04:23,220 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:04:23,220 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:04:23,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-23 23:04:23,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:04:23,421 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:04:23,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:04:23,422 INFO L85 PathProgramCache]: Analyzing trace with hash -2115565182, now seen corresponding path program 1 times [2024-10-23 23:04:23,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:04:23,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495813090] [2024-10-23 23:04:23,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:04:23,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:04:23,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:04:24,399 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-23 23:04:24,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:04:24,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495813090] [2024-10-23 23:04:24,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495813090] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:04:24,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324072864] [2024-10-23 23:04:24,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:04:24,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:04:24,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:04:24,402 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:04:24,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-23 23:04:25,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:04:25,677 INFO L255 TraceCheckSpWp]: Trace formula consists of 6001 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-23 23:04:25,681 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:04:25,708 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-23 23:04:25,708 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:04:25,737 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-23 23:04:25,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324072864] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 23:04:25,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 23:04:25,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2024-10-23 23:04:25,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232124030] [2024-10-23 23:04:25,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 23:04:25,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-23 23:04:25,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:04:25,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-23 23:04:25,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-23 23:04:25,739 INFO L87 Difference]: Start difference. First operand 63 states and 83 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:26,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:04:26,232 INFO L93 Difference]: Finished difference Result 109 states and 148 transitions. [2024-10-23 23:04:26,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-23 23:04:26,232 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-10-23 23:04:26,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:04:26,233 INFO L225 Difference]: With dead ends: 109 [2024-10-23 23:04:26,233 INFO L226 Difference]: Without dead ends: 73 [2024-10-23 23:04:26,233 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-23 23:04:26,234 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 12 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 23:04:26,234 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 272 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 23:04:26,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-10-23 23:04:26,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-10-23 23:04:26,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.3333333333333333) internal successors, (96), 72 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:26,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 96 transitions. [2024-10-23 23:04:26,239 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 96 transitions. Word has length 58 [2024-10-23 23:04:26,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:04:26,240 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 96 transitions. [2024-10-23 23:04:26,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:26,240 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 96 transitions. [2024-10-23 23:04:26,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-23 23:04:26,241 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:04:26,241 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2024-10-23 23:04:26,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-23 23:04:26,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:04:26,442 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:04:26,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:04:26,442 INFO L85 PathProgramCache]: Analyzing trace with hash 938461958, now seen corresponding path program 2 times [2024-10-23 23:04:26,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:04:26,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2421963] [2024-10-23 23:04:26,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:04:26,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:04:26,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:04:27,323 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-23 23:04:27,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:04:27,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2421963] [2024-10-23 23:04:27,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2421963] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:04:27,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850188179] [2024-10-23 23:04:27,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-23 23:04:27,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:04:27,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:04:27,326 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:04:27,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-23 23:04:28,510 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-23 23:04:28,510 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 23:04:28,542 INFO L255 TraceCheckSpWp]: Trace formula consists of 6066 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 23:04:28,547 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:04:28,574 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-23 23:04:28,574 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:04:28,604 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-23 23:04:28,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850188179] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 23:04:28,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 23:04:28,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 9 [2024-10-23 23:04:28,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540194478] [2024-10-23 23:04:28,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 23:04:28,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-23 23:04:28,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:04:28,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-23 23:04:28,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-23 23:04:28,608 INFO L87 Difference]: Start difference. First operand 73 states and 96 transitions. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:29,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:04:29,085 INFO L93 Difference]: Finished difference Result 128 states and 173 transitions. [2024-10-23 23:04:29,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-23 23:04:29,086 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-10-23 23:04:29,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:04:29,087 INFO L225 Difference]: With dead ends: 128 [2024-10-23 23:04:29,087 INFO L226 Difference]: Without dead ends: 83 [2024-10-23 23:04:29,087 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-23 23:04:29,088 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 13 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 23:04:29,088 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 272 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 23:04:29,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-10-23 23:04:29,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2024-10-23 23:04:29,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.329268292682927) internal successors, (109), 82 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:29,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 109 transitions. [2024-10-23 23:04:29,093 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 109 transitions. Word has length 68 [2024-10-23 23:04:29,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:04:29,093 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 109 transitions. [2024-10-23 23:04:29,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:29,094 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 109 transitions. [2024-10-23 23:04:29,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-23 23:04:29,094 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:04:29,095 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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] [2024-10-23 23:04:29,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-23 23:04:29,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-23 23:04:29,295 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:04:29,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:04:29,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1365987656, now seen corresponding path program 3 times [2024-10-23 23:04:29,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:04:29,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242823025] [2024-10-23 23:04:29,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:04:29,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:04:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:04:30,359 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-23 23:04:30,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:04:30,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242823025] [2024-10-23 23:04:30,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242823025] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:04:30,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147309700] [2024-10-23 23:04:30,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-23 23:04:30,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:04:30,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:04:30,360 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:04:30,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-23 23:04:31,526 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-23 23:04:31,526 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 23:04:31,557 INFO L255 TraceCheckSpWp]: Trace formula consists of 5998 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-23 23:04:31,561 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:04:31,587 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-10-23 23:04:31,587 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:04:31,617 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-10-23 23:04:31,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147309700] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 23:04:31,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 23:04:31,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 6] total 11 [2024-10-23 23:04:31,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344522088] [2024-10-23 23:04:31,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:04:31,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 23:04:31,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:04:31,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 23:04:31,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-23 23:04:31,619 INFO L87 Difference]: Start difference. First operand 83 states and 109 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:31,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:04:31,892 INFO L93 Difference]: Finished difference Result 115 states and 152 transitions. [2024-10-23 23:04:31,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 23:04:31,893 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-10-23 23:04:31,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:04:31,893 INFO L225 Difference]: With dead ends: 115 [2024-10-23 23:04:31,893 INFO L226 Difference]: Without dead ends: 84 [2024-10-23 23:04:31,894 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-23 23:04:31,894 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 11 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 23:04:31,895 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 108 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 23:04:31,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-10-23 23:04:31,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-10-23 23:04:31,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.3253012048192772) internal successors, (110), 83 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:31,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 110 transitions. [2024-10-23 23:04:31,900 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 110 transitions. Word has length 78 [2024-10-23 23:04:31,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:04:31,901 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 110 transitions. [2024-10-23 23:04:31,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:31,901 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 110 transitions. [2024-10-23 23:04:31,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-23 23:04:31,901 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:04:31,902 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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] [2024-10-23 23:04:31,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-23 23:04:32,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:04:32,103 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:04:32,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:04:32,103 INFO L85 PathProgramCache]: Analyzing trace with hash 2093021412, now seen corresponding path program 1 times [2024-10-23 23:04:32,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:04:32,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646270470] [2024-10-23 23:04:32,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:04:32,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:04:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:04:33,035 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-10-23 23:04:33,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:04:33,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646270470] [2024-10-23 23:04:33,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646270470] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:04:33,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363667567] [2024-10-23 23:04:33,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:04:33,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:04:33,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:04:33,038 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:04:33,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-23 23:04:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:04:34,214 INFO L255 TraceCheckSpWp]: Trace formula consists of 6145 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 23:04:34,219 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:04:34,242 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-10-23 23:04:34,242 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 23:04:34,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363667567] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 23:04:34,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 23:04:34,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-10-23 23:04:34,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514795497] [2024-10-23 23:04:34,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:04:34,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 23:04:34,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:04:34,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 23:04:34,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-23 23:04:34,245 INFO L87 Difference]: Start difference. First operand 84 states and 110 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:34,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:04:34,506 INFO L93 Difference]: Finished difference Result 140 states and 186 transitions. [2024-10-23 23:04:34,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 23:04:34,506 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2024-10-23 23:04:34,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:04:34,507 INFO L225 Difference]: With dead ends: 140 [2024-10-23 23:04:34,507 INFO L226 Difference]: Without dead ends: 87 [2024-10-23 23:04:34,507 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-23 23:04:34,508 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 14 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 23:04:34,508 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 109 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 23:04:34,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-10-23 23:04:34,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2024-10-23 23:04:34,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.3214285714285714) internal successors, (111), 84 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:34,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 111 transitions. [2024-10-23 23:04:34,513 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 111 transitions. Word has length 81 [2024-10-23 23:04:34,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:04:34,514 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 111 transitions. [2024-10-23 23:04:34,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:34,514 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 111 transitions. [2024-10-23 23:04:34,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-10-23 23:04:34,515 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:04:34,515 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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] [2024-10-23 23:04:34,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-23 23:04:34,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-23 23:04:34,716 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:04:34,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:04:34,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1496727580, now seen corresponding path program 1 times [2024-10-23 23:04:34,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:04:34,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319171355] [2024-10-23 23:04:34,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:04:34,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:04:35,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:04:35,724 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-23 23:04:35,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:04:35,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319171355] [2024-10-23 23:04:35,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319171355] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:04:35,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224250181] [2024-10-23 23:04:35,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:04:35,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:04:35,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:04:35,727 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:04:35,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-23 23:04:36,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:04:37,014 INFO L255 TraceCheckSpWp]: Trace formula consists of 6159 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 23:04:37,018 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:04:37,054 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-10-23 23:04:37,054 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:04:37,088 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-10-23 23:04:37,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224250181] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 23:04:37,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 23:04:37,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 6] total 12 [2024-10-23 23:04:37,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249939627] [2024-10-23 23:04:37,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:04:37,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 23:04:37,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:04:37,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 23:04:37,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-10-23 23:04:37,089 INFO L87 Difference]: Start difference. First operand 85 states and 111 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:37,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:04:37,371 INFO L93 Difference]: Finished difference Result 118 states and 155 transitions. [2024-10-23 23:04:37,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 23:04:37,372 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2024-10-23 23:04:37,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:04:37,373 INFO L225 Difference]: With dead ends: 118 [2024-10-23 23:04:37,373 INFO L226 Difference]: Without dead ends: 86 [2024-10-23 23:04:37,373 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-10-23 23:04:37,374 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 7 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 23:04:37,374 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 111 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 23:04:37,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-10-23 23:04:37,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2024-10-23 23:04:37,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.3176470588235294) internal successors, (112), 85 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:37,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 112 transitions. [2024-10-23 23:04:37,379 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 112 transitions. Word has length 84 [2024-10-23 23:04:37,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:04:37,379 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 112 transitions. [2024-10-23 23:04:37,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:37,380 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 112 transitions. [2024-10-23 23:04:37,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-10-23 23:04:37,380 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:04:37,381 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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] [2024-10-23 23:04:37,418 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-23 23:04:37,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-23 23:04:37,581 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:04:37,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:04:37,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1098305348, now seen corresponding path program 1 times [2024-10-23 23:04:37,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:04:37,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043406094] [2024-10-23 23:04:37,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:04:37,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:04:37,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:04:38,400 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-10-23 23:04:38,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:04:38,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043406094] [2024-10-23 23:04:38,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043406094] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:04:38,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632272969] [2024-10-23 23:04:38,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:04:38,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:04:38,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:04:38,404 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:04:38,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-23 23:04:39,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:04:39,630 INFO L255 TraceCheckSpWp]: Trace formula consists of 6162 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 23:04:39,635 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:04:39,682 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-10-23 23:04:39,682 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:04:39,719 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-23 23:04:39,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632272969] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 23:04:39,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 23:04:39,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 6] total 12 [2024-10-23 23:04:39,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023598184] [2024-10-23 23:04:39,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:04:39,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 23:04:39,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:04:39,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 23:04:39,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-10-23 23:04:39,722 INFO L87 Difference]: Start difference. First operand 86 states and 112 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:39,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:04:39,985 INFO L93 Difference]: Finished difference Result 97 states and 126 transitions. [2024-10-23 23:04:39,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 23:04:39,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2024-10-23 23:04:39,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:04:39,987 INFO L225 Difference]: With dead ends: 97 [2024-10-23 23:04:39,987 INFO L226 Difference]: Without dead ends: 87 [2024-10-23 23:04:39,987 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-10-23 23:04:39,988 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 7 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 23:04:39,988 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 111 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 23:04:39,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-10-23 23:04:39,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2024-10-23 23:04:39,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.313953488372093) internal successors, (113), 86 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:39,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 113 transitions. [2024-10-23 23:04:39,995 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 113 transitions. Word has length 85 [2024-10-23 23:04:39,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:04:39,995 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 113 transitions. [2024-10-23 23:04:39,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:39,996 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 113 transitions. [2024-10-23 23:04:39,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-23 23:04:39,996 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:04:39,996 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:04:40,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-23 23:04:40,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-23 23:04:40,197 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:04:40,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:04:40,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1343816853, now seen corresponding path program 1 times [2024-10-23 23:04:40,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:04:40,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349960812] [2024-10-23 23:04:40,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:04:40,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:04:40,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:04:41,043 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-10-23 23:04:41,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:04:41,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349960812] [2024-10-23 23:04:41,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349960812] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:04:41,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652954932] [2024-10-23 23:04:41,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:04:41,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:04:41,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:04:41,045 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:04:41,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-23 23:04:42,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:04:42,256 INFO L255 TraceCheckSpWp]: Trace formula consists of 6165 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-23 23:04:42,259 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:04:42,317 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-10-23 23:04:42,317 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:04:42,379 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-10-23 23:04:42,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652954932] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 23:04:42,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 23:04:42,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 5] total 14 [2024-10-23 23:04:42,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497157770] [2024-10-23 23:04:42,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 23:04:42,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-23 23:04:42,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:04:42,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-23 23:04:42,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-10-23 23:04:42,382 INFO L87 Difference]: Start difference. First operand 87 states and 113 transitions. Second operand has 14 states, 14 states have (on average 8.571428571428571) internal successors, (120), 14 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:43,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:04:43,440 INFO L93 Difference]: Finished difference Result 155 states and 205 transitions. [2024-10-23 23:04:43,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-23 23:04:43,441 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.571428571428571) internal successors, (120), 14 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2024-10-23 23:04:43,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:04:43,442 INFO L225 Difference]: With dead ends: 155 [2024-10-23 23:04:43,442 INFO L226 Difference]: Without dead ends: 97 [2024-10-23 23:04:43,442 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-10-23 23:04:43,442 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 26 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-23 23:04:43,443 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 717 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-23 23:04:43,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-10-23 23:04:43,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2024-10-23 23:04:43,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.3085106382978724) internal successors, (123), 94 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:43,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 123 transitions. [2024-10-23 23:04:43,448 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 123 transitions. Word has length 86 [2024-10-23 23:04:43,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:04:43,448 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 123 transitions. [2024-10-23 23:04:43,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.571428571428571) internal successors, (120), 14 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:43,449 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 123 transitions. [2024-10-23 23:04:43,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-10-23 23:04:43,449 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:04:43,449 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 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] [2024-10-23 23:04:43,478 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-23 23:04:43,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-23 23:04:43,650 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:04:43,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:04:43,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1906087440, now seen corresponding path program 2 times [2024-10-23 23:04:43,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:04:43,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754309218] [2024-10-23 23:04:43,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:04:43,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:04:43,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:04:44,601 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-10-23 23:04:44,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:04:44,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754309218] [2024-10-23 23:04:44,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754309218] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:04:44,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975479460] [2024-10-23 23:04:44,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-23 23:04:44,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:04:44,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:04:44,604 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:04:44,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-23 23:04:45,863 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-23 23:04:45,864 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 23:04:45,894 INFO L255 TraceCheckSpWp]: Trace formula consists of 6211 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-23 23:04:45,897 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:04:46,010 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-23 23:04:46,010 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:04:46,128 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-10-23 23:04:46,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975479460] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 23:04:46,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 23:04:46,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 7] total 22 [2024-10-23 23:04:46,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199465022] [2024-10-23 23:04:46,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 23:04:46,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-23 23:04:46,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:04:46,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-23 23:04:46,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2024-10-23 23:04:46,133 INFO L87 Difference]: Start difference. First operand 95 states and 123 transitions. Second operand has 22 states, 22 states have (on average 6.181818181818182) internal successors, (136), 22 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:47,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:04:47,266 INFO L93 Difference]: Finished difference Result 181 states and 243 transitions. [2024-10-23 23:04:47,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-23 23:04:47,266 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.181818181818182) internal successors, (136), 22 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-10-23 23:04:47,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:04:47,267 INFO L225 Difference]: With dead ends: 181 [2024-10-23 23:04:47,267 INFO L226 Difference]: Without dead ends: 116 [2024-10-23 23:04:47,267 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2024-10-23 23:04:47,268 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 48 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-23 23:04:47,268 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 714 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-23 23:04:47,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-10-23 23:04:47,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 114. [2024-10-23 23:04:47,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.3097345132743363) internal successors, (148), 113 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:47,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 148 transitions. [2024-10-23 23:04:47,275 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 148 transitions. Word has length 94 [2024-10-23 23:04:47,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:04:47,275 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 148 transitions. [2024-10-23 23:04:47,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.181818181818182) internal successors, (136), 22 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:47,275 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 148 transitions. [2024-10-23 23:04:47,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-10-23 23:04:47,276 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:04:47,276 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 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] [2024-10-23 23:04:47,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-23 23:04:47,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:04:47,477 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:04:47,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:04:47,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1649604661, now seen corresponding path program 3 times [2024-10-23 23:04:47,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:04:47,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963256392] [2024-10-23 23:04:47,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:04:47,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:04:47,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:04:48,687 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-10-23 23:04:48,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:04:48,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963256392] [2024-10-23 23:04:48,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963256392] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:04:48,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910979372] [2024-10-23 23:04:48,687 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-23 23:04:48,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:04:48,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:04:48,689 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:04:48,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-23 23:04:50,862 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-23 23:04:50,862 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 23:04:50,895 INFO L255 TraceCheckSpWp]: Trace formula consists of 6098 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-10-23 23:04:50,901 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:04:50,995 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2024-10-23 23:04:50,995 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:04:51,090 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2024-10-23 23:04:51,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910979372] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 23:04:51,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 23:04:51,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 6] total 17 [2024-10-23 23:04:51,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064589704] [2024-10-23 23:04:51,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 23:04:51,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-23 23:04:51,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:04:51,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-23 23:04:51,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2024-10-23 23:04:51,092 INFO L87 Difference]: Start difference. First operand 114 states and 148 transitions. Second operand has 17 states, 17 states have (on average 6.529411764705882) internal successors, (111), 17 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:51,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:04:51,809 INFO L93 Difference]: Finished difference Result 227 states and 301 transitions. [2024-10-23 23:04:51,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-23 23:04:51,809 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.529411764705882) internal successors, (111), 17 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2024-10-23 23:04:51,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:04:51,810 INFO L225 Difference]: With dead ends: 227 [2024-10-23 23:04:51,810 INFO L226 Difference]: Without dead ends: 144 [2024-10-23 23:04:51,811 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2024-10-23 23:04:51,811 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 65 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-23 23:04:51,811 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 407 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-23 23:04:51,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-10-23 23:04:51,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 138. [2024-10-23 23:04:51,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 1.2992700729927007) internal successors, (178), 137 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:51,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 178 transitions. [2024-10-23 23:04:51,820 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 178 transitions. Word has length 113 [2024-10-23 23:04:51,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:04:51,821 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 178 transitions. [2024-10-23 23:04:51,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.529411764705882) internal successors, (111), 17 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:51,821 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 178 transitions. [2024-10-23 23:04:51,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-10-23 23:04:51,821 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:04:51,821 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 5, 5, 5, 4, 4, 4, 4, 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] [2024-10-23 23:04:51,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-23 23:04:52,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-23 23:04:52,022 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:04:52,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:04:52,022 INFO L85 PathProgramCache]: Analyzing trace with hash 829384748, now seen corresponding path program 4 times [2024-10-23 23:04:52,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:04:52,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021550487] [2024-10-23 23:04:52,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:04:52,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:04:52,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:04:53,172 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2024-10-23 23:04:53,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:04:53,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021550487] [2024-10-23 23:04:53,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021550487] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:04:53,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201434093] [2024-10-23 23:04:53,172 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-23 23:04:53,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:04:53,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:04:53,174 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:04:53,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-23 23:04:54,445 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-23 23:04:54,445 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 23:04:54,473 INFO L255 TraceCheckSpWp]: Trace formula consists of 6392 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-23 23:04:54,476 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:04:54,564 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2024-10-23 23:04:54,564 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:04:54,695 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2024-10-23 23:04:54,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201434093] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 23:04:54,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 23:04:54,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14, 8] total 21 [2024-10-23 23:04:54,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208266005] [2024-10-23 23:04:54,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 23:04:54,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-23 23:04:54,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:04:54,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-23 23:04:54,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2024-10-23 23:04:54,699 INFO L87 Difference]: Start difference. First operand 138 states and 178 transitions. Second operand has 21 states, 21 states have (on average 5.571428571428571) internal successors, (117), 21 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:55,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:04:55,843 INFO L93 Difference]: Finished difference Result 266 states and 353 transitions. [2024-10-23 23:04:55,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-23 23:04:55,843 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.571428571428571) internal successors, (117), 21 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2024-10-23 23:04:55,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:04:55,844 INFO L225 Difference]: With dead ends: 266 [2024-10-23 23:04:55,844 INFO L226 Difference]: Without dead ends: 160 [2024-10-23 23:04:55,845 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2024-10-23 23:04:55,846 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 60 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-23 23:04:55,846 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 645 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-23 23:04:55,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-10-23 23:04:55,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2024-10-23 23:04:55,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 1.3018867924528301) internal successors, (207), 159 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:55,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 207 transitions. [2024-10-23 23:04:55,856 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 207 transitions. Word has length 126 [2024-10-23 23:04:55,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:04:55,857 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 207 transitions. [2024-10-23 23:04:55,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.571428571428571) internal successors, (117), 21 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:04:55,857 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 207 transitions. [2024-10-23 23:04:55,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-10-23 23:04:55,858 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:04:55,858 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 10, 10, 7, 4, 4, 4, 4, 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] [2024-10-23 23:04:55,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-23 23:04:56,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:04:56,059 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:04:56,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:04:56,059 INFO L85 PathProgramCache]: Analyzing trace with hash 152356790, now seen corresponding path program 5 times [2024-10-23 23:04:56,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:04:56,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315947077] [2024-10-23 23:04:56,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:04:56,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:04:56,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:04:57,513 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 413 trivial. 0 not checked. [2024-10-23 23:04:57,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:04:57,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315947077] [2024-10-23 23:04:57,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315947077] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:04:57,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368836720] [2024-10-23 23:04:57,514 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-23 23:04:57,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:04:57,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:04:57,515 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:04:57,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process