./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/robot_0_unsafe.c-amalgamation.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d 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/robot_0_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 071462d6b02dde69246b0bcce17e111b803b38728d996210b9c456e9deaf3842 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 18:09:31,047 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 18:09:31,118 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 18:09:31,123 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 18:09:31,126 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 18:09:31,163 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 18:09:31,164 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 18:09:31,165 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 18:09:31,166 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 18:09:31,166 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 18:09:31,167 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 18:09:31,167 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 18:09:31,168 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 18:09:31,168 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 18:09:31,168 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 18:09:31,170 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 18:09:31,171 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 18:09:31,171 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 18:09:31,171 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 18:09:31,172 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 18:09:31,172 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 18:09:31,176 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 18:09:31,177 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 18:09:31,177 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 18:09:31,177 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 18:09:31,177 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 18:09:31,178 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 18:09:31,178 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 18:09:31,178 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 18:09:31,179 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 18:09:31,179 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 18:09:31,179 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 18:09:31,179 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 18:09:31,180 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 18:09:31,180 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 18:09:31,182 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 18:09:31,182 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 18:09:31,182 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 18:09:31,182 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 18:09:31,183 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 18:09:31,183 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 18:09:31,183 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 18:09:31,184 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 071462d6b02dde69246b0bcce17e111b803b38728d996210b9c456e9deaf3842 [2024-10-12 18:09:31,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 18:09:31,499 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 18:09:31,503 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 18:09:31,504 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 18:09:31,505 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 18:09:31,506 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/robot_0_unsafe.c-amalgamation.i [2024-10-12 18:09:33,067 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 18:09:33,518 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 18:09:33,519 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/robot_0_unsafe.c-amalgamation.i [2024-10-12 18:09:33,567 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/653cdd421/ebb81e2fe7e84aa1a542749cc8c6562c/FLAG9f105cace [2024-10-12 18:09:33,591 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/653cdd421/ebb81e2fe7e84aa1a542749cc8c6562c [2024-10-12 18:09:33,634 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 18:09:33,636 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 18:09:33,655 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 18:09:33,656 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 18:09:33,676 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 18:09:33,677 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:09:33" (1/1) ... [2024-10-12 18:09:33,678 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e3d7a50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:09:33, skipping insertion in model container [2024-10-12 18:09:33,678 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:09:33" (1/1) ... [2024-10-12 18:09:33,780 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 18:09:34,568 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/robot_0_unsafe.c-amalgamation.i[63907,63920] [2024-10-12 18:09:34,818 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 18:09:35,029 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 18:09:35,072 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/robot_0_unsafe.c-amalgamation.i[63907,63920] [2024-10-12 18:09:35,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 18:09:35,725 INFO L204 MainTranslator]: Completed translation [2024-10-12 18:09:35,726 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:09:35 WrapperNode [2024-10-12 18:09:35,726 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 18:09:35,728 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 18:09:35,728 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 18:09:35,729 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 18:09:35,736 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:09:35" (1/1) ... [2024-10-12 18:09:35,902 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:09:35" (1/1) ... [2024-10-12 18:09:36,438 INFO L138 Inliner]: procedures = 621, calls = 9239, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 9600 [2024-10-12 18:09:36,439 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 18:09:36,440 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 18:09:36,440 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 18:09:36,440 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 18:09:36,453 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:09:35" (1/1) ... [2024-10-12 18:09:36,454 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:09:35" (1/1) ... [2024-10-12 18:09:36,658 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:09:35" (1/1) ... [2024-10-12 18:09:36,762 INFO L175 MemorySlicer]: Split 9211 memory accesses to 14 slices as follows [2, 7, 321, 65, 4097, 65, 4097, 65, 321, 6, 73, 70, 6, 16]. 44 percent of accesses are in the largest equivalence class. The 9166 initializations are split as follows [2, 7, 320, 64, 4096, 64, 4096, 64, 320, 5, 64, 64, 0, 0]. The 12 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 3, 1, 5]. [2024-10-12 18:09:36,764 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:09:35" (1/1) ... [2024-10-12 18:09:36,765 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:09:35" (1/1) ... [2024-10-12 18:09:37,022 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:09:35" (1/1) ... [2024-10-12 18:09:37,045 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:09:35" (1/1) ... [2024-10-12 18:09:37,085 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:09:35" (1/1) ... [2024-10-12 18:09:37,116 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:09:35" (1/1) ... [2024-10-12 18:09:37,314 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 18:09:37,315 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 18:09:37,318 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 18:09:37,318 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 18:09:37,319 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:09:35" (1/1) ... [2024-10-12 18:09:37,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 18:09:37,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:09:37,356 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) [2024-10-12 18:09:37,359 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 [2024-10-12 18:09:37,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-10-12 18:09:37,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-10-12 18:09:37,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-10-12 18:09:37,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-10-12 18:09:37,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-10-12 18:09:37,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2024-10-12 18:09:37,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2024-10-12 18:09:37,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2024-10-12 18:09:37,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2024-10-12 18:09:37,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2024-10-12 18:09:37,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2024-10-12 18:09:37,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2024-10-12 18:09:37,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#12 [2024-10-12 18:09:37,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#13 [2024-10-12 18:09:37,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-12 18:09:37,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2024-10-12 18:09:37,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2024-10-12 18:09:37,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2024-10-12 18:09:37,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2024-10-12 18:09:37,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2024-10-12 18:09:37,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2024-10-12 18:09:37,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2024-10-12 18:09:37,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2024-10-12 18:09:37,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2024-10-12 18:09:37,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#9 [2024-10-12 18:09:37,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#10 [2024-10-12 18:09:37,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#11 [2024-10-12 18:09:37,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#12 [2024-10-12 18:09:37,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#13 [2024-10-12 18:09:37,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2024-10-12 18:09:37,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2024-10-12 18:09:37,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2024-10-12 18:09:37,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2024-10-12 18:09:37,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2024-10-12 18:09:37,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2024-10-12 18:09:37,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2024-10-12 18:09:37,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2024-10-12 18:09:37,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2024-10-12 18:09:37,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#9 [2024-10-12 18:09:37,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#10 [2024-10-12 18:09:37,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#11 [2024-10-12 18:09:37,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#12 [2024-10-12 18:09:37,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#13 [2024-10-12 18:09:37,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 18:09:37,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 18:09:37,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 18:09:37,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-12 18:09:37,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 18:09:37,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-12 18:09:37,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-12 18:09:37,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-12 18:09:37,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-12 18:09:37,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-12 18:09:37,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-12 18:09:37,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-12 18:09:37,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-12 18:09:37,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-12 18:09:37,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-12 18:09:37,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-10-12 18:09:37,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-10-12 18:09:37,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-10-12 18:09:37,699 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 18:09:37,700 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 18:09:55,746 INFO L? ?]: Removed 170 outVars from TransFormulas that were not future-live. [2024-10-12 18:09:55,746 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 18:09:56,221 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 18:09:56,221 INFO L314 CfgBuilder]: Removed 15 assume(true) statements. [2024-10-12 18:09:56,222 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:09:56 BoogieIcfgContainer [2024-10-12 18:09:56,222 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 18:09:56,226 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 18:09:56,226 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 18:09:56,230 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 18:09:56,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 06:09:33" (1/3) ... [2024-10-12 18:09:56,231 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52214bdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:09:56, skipping insertion in model container [2024-10-12 18:09:56,232 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:09:35" (2/3) ... [2024-10-12 18:09:56,233 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52214bdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:09:56, skipping insertion in model container [2024-10-12 18:09:56,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:09:56" (3/3) ... [2024-10-12 18:09:56,235 INFO L112 eAbstractionObserver]: Analyzing ICFG robot_0_unsafe.c-amalgamation.i [2024-10-12 18:09:56,255 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 18:09:56,255 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 18:09:56,328 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 18:09:56,336 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;@19478194, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 18:09:56,337 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 18:09:56,342 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 62 states have (on average 1.7903225806451613) internal successors, (111), 63 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) [2024-10-12 18:09:56,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-12 18:09:56,351 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:09:56,353 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] [2024-10-12 18:09:56,354 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:09:56,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:09:56,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1999498850, now seen corresponding path program 1 times [2024-10-12 18:09:56,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:09:56,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111908147] [2024-10-12 18:09:56,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:09:56,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:09:57,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:09:58,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:09:58,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:09:58,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111908147] [2024-10-12 18:09:58,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111908147] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:09:58,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:09:58,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 18:09:58,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413884063] [2024-10-12 18:09:58,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:09:58,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 18:09:58,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:09:58,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 18:09:58,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 18:09:58,223 INFO L87 Difference]: Start difference. First operand has 64 states, 62 states have (on average 1.7903225806451613) internal successors, (111), 63 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) 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) [2024-10-12 18:09:58,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:09:58,875 INFO L93 Difference]: Finished difference Result 125 states and 217 transitions. [2024-10-12 18:09:58,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 18:09:58,881 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 [2024-10-12 18:09:58,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:09:58,889 INFO L225 Difference]: With dead ends: 125 [2024-10-12 18:09:58,890 INFO L226 Difference]: Without dead ends: 62 [2024-10-12 18:09:58,893 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 [2024-10-12 18:09:58,897 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 18:09:58,898 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 18:09:58,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-10-12 18:09:58,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-10-12 18:09:58,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.4426229508196722) internal successors, (88), 61 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) [2024-10-12 18:09:58,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 88 transitions. [2024-10-12 18:09:58,934 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 88 transitions. Word has length 39 [2024-10-12 18:09:58,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:09:58,935 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 88 transitions. [2024-10-12 18:09:58,936 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) [2024-10-12 18:09:58,936 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 88 transitions. [2024-10-12 18:09:58,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-12 18:09:58,939 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:09:58,939 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] [2024-10-12 18:09:58,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 18:09:58,940 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:09:58,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:09:58,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1543540249, now seen corresponding path program 1 times [2024-10-12 18:09:58,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:09:58,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066169564] [2024-10-12 18:09:58,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:09:58,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:09:59,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:10:00,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:10:00,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:10:00,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066169564] [2024-10-12 18:10:00,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066169564] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:10:00,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:10:00,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 18:10:00,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615695411] [2024-10-12 18:10:00,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:10:00,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 18:10:00,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:10:00,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 18:10:00,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 18:10:00,584 INFO L87 Difference]: Start difference. First operand 62 states and 88 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) [2024-10-12 18:10:01,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:10:01,238 INFO L93 Difference]: Finished difference Result 116 states and 165 transitions. [2024-10-12 18:10:01,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 18:10:01,239 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 [2024-10-12 18:10:01,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:10:01,240 INFO L225 Difference]: With dead ends: 116 [2024-10-12 18:10:01,240 INFO L226 Difference]: Without dead ends: 62 [2024-10-12 18:10:01,241 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 [2024-10-12 18:10:01,242 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 18:10:01,243 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 126 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 18:10:01,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-10-12 18:10:01,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-10-12 18:10:01,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.4262295081967213) internal successors, (87), 61 states have internal predecessors, (87), 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) [2024-10-12 18:10:01,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 87 transitions. [2024-10-12 18:10:01,251 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 87 transitions. Word has length 39 [2024-10-12 18:10:01,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:10:01,251 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 87 transitions. [2024-10-12 18:10:01,252 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) [2024-10-12 18:10:01,252 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 87 transitions. [2024-10-12 18:10:01,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-12 18:10:01,253 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:10:01,253 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] [2024-10-12 18:10:01,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 18:10:01,254 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:10:01,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:10:01,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1268780635, now seen corresponding path program 1 times [2024-10-12 18:10:01,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:10:01,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314402927] [2024-10-12 18:10:01,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:10:01,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:10:01,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:10:03,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:10:03,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:10:03,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314402927] [2024-10-12 18:10:03,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314402927] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:10:03,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:10:03,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 18:10:03,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562723998] [2024-10-12 18:10:03,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:10:03,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 18:10:03,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:10:03,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 18:10:03,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 18:10:03,435 INFO L87 Difference]: Start difference. First operand 62 states and 87 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) [2024-10-12 18:10:04,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:10:04,020 INFO L93 Difference]: Finished difference Result 102 states and 145 transitions. [2024-10-12 18:10:04,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 18:10:04,022 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 [2024-10-12 18:10:04,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:10:04,023 INFO L225 Difference]: With dead ends: 102 [2024-10-12 18:10:04,023 INFO L226 Difference]: Without dead ends: 65 [2024-10-12 18:10:04,024 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 [2024-10-12 18:10:04,025 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 3 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 18:10:04,025 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 123 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 18:10:04,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-10-12 18:10:04,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2024-10-12 18:10:04,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 62 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) [2024-10-12 18:10:04,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 88 transitions. [2024-10-12 18:10:04,034 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 88 transitions. Word has length 39 [2024-10-12 18:10:04,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:10:04,034 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 88 transitions. [2024-10-12 18:10:04,035 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) [2024-10-12 18:10:04,035 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 88 transitions. [2024-10-12 18:10:04,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-10-12 18:10:04,036 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:10:04,036 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] [2024-10-12 18:10:04,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 18:10:04,036 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:10:04,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:10:04,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1666113522, now seen corresponding path program 1 times [2024-10-12 18:10:04,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:10:04,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297377716] [2024-10-12 18:10:04,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:10:04,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:10:04,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:10:06,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:10:06,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:10:06,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297377716] [2024-10-12 18:10:06,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297377716] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:10:06,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402348455] [2024-10-12 18:10:06,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:10:06,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:10:06,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:10:06,215 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) [2024-10-12 18:10:06,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 18:10:08,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:10:08,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 9774 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-12 18:10:08,831 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:10:08,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:10:08,869 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:10:08,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 18:10:08,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402348455] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 18:10:08,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 18:10:08,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-12 18:10:08,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470800860] [2024-10-12 18:10:08,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:10:08,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 18:10:08,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:10:08,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 18:10:08,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 18:10:08,898 INFO L87 Difference]: Start difference. First operand 63 states and 88 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2024-10-12 18:10:09,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:10:09,378 INFO L93 Difference]: Finished difference Result 91 states and 128 transitions. [2024-10-12 18:10:09,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 18:10:09,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 42 [2024-10-12 18:10:09,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:10:09,380 INFO L225 Difference]: With dead ends: 91 [2024-10-12 18:10:09,380 INFO L226 Difference]: Without dead ends: 64 [2024-10-12 18:10:09,381 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 18:10:09,382 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 3 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 18:10:09,382 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 122 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 18:10:09,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-10-12 18:10:09,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-10-12 18:10:09,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.4126984126984128) internal successors, (89), 63 states have internal predecessors, (89), 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) [2024-10-12 18:10:09,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 89 transitions. [2024-10-12 18:10:09,388 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 89 transitions. Word has length 42 [2024-10-12 18:10:09,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:10:09,388 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 89 transitions. [2024-10-12 18:10:09,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2024-10-12 18:10:09,389 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 89 transitions. [2024-10-12 18:10:09,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-12 18:10:09,390 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:10:09,390 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] [2024-10-12 18:10:09,433 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 18:10:09,591 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 [2024-10-12 18:10:09,592 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:10:09,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:10:09,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1881213728, now seen corresponding path program 1 times [2024-10-12 18:10:09,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:10:09,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956395076] [2024-10-12 18:10:09,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:10:09,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:10:10,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:10:11,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 18:10:11,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:10:11,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956395076] [2024-10-12 18:10:11,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956395076] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:10:11,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749982914] [2024-10-12 18:10:11,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:10:11,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:10:11,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:10:11,684 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) [2024-10-12 18:10:11,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 18:10:13,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:10:13,905 INFO L255 TraceCheckSpWp]: Trace formula consists of 9792 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-12 18:10:13,913 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:10:13,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 18:10:13,927 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:10:13,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 18:10:13,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749982914] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 18:10:13,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 18:10:13,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-12 18:10:13,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736558740] [2024-10-12 18:10:13,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:10:13,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 18:10:13,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:10:13,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 18:10:13,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 18:10:13,949 INFO L87 Difference]: Start difference. First operand 64 states and 89 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2024-10-12 18:10:14,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:10:14,430 INFO L93 Difference]: Finished difference Result 82 states and 114 transitions. [2024-10-12 18:10:14,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 18:10:14,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 45 [2024-10-12 18:10:14,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:10:14,432 INFO L225 Difference]: With dead ends: 82 [2024-10-12 18:10:14,432 INFO L226 Difference]: Without dead ends: 65 [2024-10-12 18:10:14,432 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 18:10:14,433 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 3 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 18:10:14,434 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 122 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 18:10:14,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-10-12 18:10:14,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2024-10-12 18:10:14,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.40625) internal successors, (90), 64 states have internal predecessors, (90), 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) [2024-10-12 18:10:14,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 90 transitions. [2024-10-12 18:10:14,442 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 90 transitions. Word has length 45 [2024-10-12 18:10:14,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:10:14,442 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 90 transitions. [2024-10-12 18:10:14,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2024-10-12 18:10:14,443 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 90 transitions. [2024-10-12 18:10:14,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-10-12 18:10:14,444 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:10:14,444 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] [2024-10-12 18:10:14,502 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 18:10:14,644 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 [2024-10-12 18:10:14,645 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:10:14,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:10:14,646 INFO L85 PathProgramCache]: Analyzing trace with hash -655161778, now seen corresponding path program 1 times [2024-10-12 18:10:14,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:10:14,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139828054] [2024-10-12 18:10:14,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:10:14,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:10:15,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:10:16,644 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 18:10:16,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:10:16,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139828054] [2024-10-12 18:10:16,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139828054] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:10:16,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830820980] [2024-10-12 18:10:16,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:10:16,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:10:16,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:10:16,652 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) [2024-10-12 18:10:16,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 18:10:18,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:10:18,747 INFO L255 TraceCheckSpWp]: Trace formula consists of 9810 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-12 18:10:18,755 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:10:18,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 18:10:18,775 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 18:10:18,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830820980] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:10:18,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 18:10:18,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-10-12 18:10:18,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107289684] [2024-10-12 18:10:18,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:10:18,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 18:10:18,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:10:18,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 18:10:18,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 18:10:18,779 INFO L87 Difference]: Start difference. First operand 65 states and 90 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-10-12 18:10:19,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:10:19,303 INFO L93 Difference]: Finished difference Result 114 states and 160 transitions. [2024-10-12 18:10:19,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 18:10:19,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2024-10-12 18:10:19,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:10:19,305 INFO L225 Difference]: With dead ends: 114 [2024-10-12 18:10:19,306 INFO L226 Difference]: Without dead ends: 70 [2024-10-12 18:10:19,306 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 18:10:19,307 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 6 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 18:10:19,307 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 124 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 18:10:19,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-10-12 18:10:19,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2024-10-12 18:10:19,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.4) internal successors, (91), 65 states have internal predecessors, (91), 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) [2024-10-12 18:10:19,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 91 transitions. [2024-10-12 18:10:19,314 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 91 transitions. Word has length 48 [2024-10-12 18:10:19,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:10:19,314 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 91 transitions. [2024-10-12 18:10:19,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-10-12 18:10:19,315 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 91 transitions. [2024-10-12 18:10:19,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-12 18:10:19,316 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:10:19,316 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] [2024-10-12 18:10:19,361 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-12 18:10:19,517 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 [2024-10-12 18:10:19,517 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:10:19,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:10:19,518 INFO L85 PathProgramCache]: Analyzing trace with hash 787380296, now seen corresponding path program 1 times [2024-10-12 18:10:19,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:10:19,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360654592] [2024-10-12 18:10:19,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:10:19,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:10:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:10:21,349 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 18:10:21,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:10:21,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360654592] [2024-10-12 18:10:21,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360654592] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:10:21,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999928354] [2024-10-12 18:10:21,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:10:21,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:10:21,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:10:21,354 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) [2024-10-12 18:10:21,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 18:10:23,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:10:23,169 INFO L255 TraceCheckSpWp]: Trace formula consists of 9816 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-12 18:10:23,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:10:23,214 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 18:10:23,215 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:10:23,233 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 18:10:23,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999928354] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 18:10:23,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 18:10:23,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-12 18:10:23,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009083180] [2024-10-12 18:10:23,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:10:23,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 18:10:23,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:10:23,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 18:10:23,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 18:10:23,236 INFO L87 Difference]: Start difference. First operand 66 states and 91 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2024-10-12 18:10:23,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:10:23,735 INFO L93 Difference]: Finished difference Result 100 states and 139 transitions. [2024-10-12 18:10:23,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 18:10:23,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2024-10-12 18:10:23,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:10:23,737 INFO L225 Difference]: With dead ends: 100 [2024-10-12 18:10:23,737 INFO L226 Difference]: Without dead ends: 67 [2024-10-12 18:10:23,737 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 18:10:23,738 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 6 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 18:10:23,738 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 122 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 18:10:23,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-10-12 18:10:23,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-10-12 18:10:23,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.393939393939394) internal successors, (92), 66 states have internal predecessors, (92), 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) [2024-10-12 18:10:23,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 92 transitions. [2024-10-12 18:10:23,744 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 92 transitions. Word has length 51 [2024-10-12 18:10:23,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:10:23,744 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 92 transitions. [2024-10-12 18:10:23,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2024-10-12 18:10:23,745 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 92 transitions. [2024-10-12 18:10:23,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-12 18:10:23,745 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:10:23,746 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] [2024-10-12 18:10:23,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-12 18:10:23,946 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 [2024-10-12 18:10:23,946 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:10:23,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:10:23,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1651793648, now seen corresponding path program 1 times [2024-10-12 18:10:23,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:10:23,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530043769] [2024-10-12 18:10:23,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:10:23,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:10:24,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:10:25,502 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 18:10:25,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:10:25,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530043769] [2024-10-12 18:10:25,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530043769] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:10:25,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761957855] [2024-10-12 18:10:25,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:10:25,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:10:25,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:10:25,504 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) [2024-10-12 18:10:25,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 18:10:27,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:10:27,516 INFO L255 TraceCheckSpWp]: Trace formula consists of 9822 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-12 18:10:27,522 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:10:27,553 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 18:10:27,553 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:10:27,570 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 18:10:27,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761957855] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 18:10:27,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 18:10:27,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-12 18:10:27,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764967175] [2024-10-12 18:10:27,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:10:27,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 18:10:27,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:10:27,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 18:10:27,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 18:10:27,573 INFO L87 Difference]: Start difference. First operand 67 states and 92 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2024-10-12 18:10:28,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:10:28,025 INFO L93 Difference]: Finished difference Result 90 states and 124 transitions. [2024-10-12 18:10:28,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 18:10:28,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 54 [2024-10-12 18:10:28,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:10:28,026 INFO L225 Difference]: With dead ends: 90 [2024-10-12 18:10:28,026 INFO L226 Difference]: Without dead ends: 68 [2024-10-12 18:10:28,026 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 18:10:28,027 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 6 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 18:10:28,027 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 122 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 18:10:28,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-10-12 18:10:28,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2024-10-12 18:10:28,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.3880597014925373) internal successors, (93), 67 states have internal predecessors, (93), 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) [2024-10-12 18:10:28,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 93 transitions. [2024-10-12 18:10:28,036 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 93 transitions. Word has length 54 [2024-10-12 18:10:28,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:10:28,037 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 93 transitions. [2024-10-12 18:10:28,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2024-10-12 18:10:28,037 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 93 transitions. [2024-10-12 18:10:28,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-12 18:10:28,038 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:10:28,038 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] [2024-10-12 18:10:28,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-12 18:10:28,238 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 [2024-10-12 18:10:28,239 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:10:28,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:10:28,239 INFO L85 PathProgramCache]: Analyzing trace with hash 152863130, now seen corresponding path program 1 times [2024-10-12 18:10:28,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:10:28,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139624470] [2024-10-12 18:10:28,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:10:28,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:10:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:10:29,766 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 18:10:29,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:10:29,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139624470] [2024-10-12 18:10:29,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139624470] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:10:29,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798933215] [2024-10-12 18:10:29,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:10:29,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:10:29,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:10:29,770 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) [2024-10-12 18:10:29,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-12 18:10:31,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:10:31,774 INFO L255 TraceCheckSpWp]: Trace formula consists of 9828 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-12 18:10:31,780 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:10:31,805 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 18:10:31,805 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:10:31,823 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 18:10:31,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798933215] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 18:10:31,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 18:10:31,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-12 18:10:31,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488048207] [2024-10-12 18:10:31,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:10:31,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 18:10:31,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:10:31,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 18:10:31,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 18:10:31,826 INFO L87 Difference]: Start difference. First operand 68 states and 93 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2024-10-12 18:10:32,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:10:32,370 INFO L93 Difference]: Finished difference Result 80 states and 109 transitions. [2024-10-12 18:10:32,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 18:10:32,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 57 [2024-10-12 18:10:32,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:10:32,372 INFO L225 Difference]: With dead ends: 80 [2024-10-12 18:10:32,372 INFO L226 Difference]: Without dead ends: 69 [2024-10-12 18:10:32,372 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 18:10:32,373 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 6 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 18:10:32,373 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 122 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 18:10:32,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-10-12 18:10:32,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-10-12 18:10:32,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.3823529411764706) internal successors, (94), 68 states have internal predecessors, (94), 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) [2024-10-12 18:10:32,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 94 transitions. [2024-10-12 18:10:32,379 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 94 transitions. Word has length 57 [2024-10-12 18:10:32,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:10:32,379 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 94 transitions. [2024-10-12 18:10:32,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2024-10-12 18:10:32,379 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 94 transitions. [2024-10-12 18:10:32,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-12 18:10:32,380 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:10:32,380 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, 1, 1] [2024-10-12 18:10:32,442 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-12 18:10:32,581 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 [2024-10-12 18:10:32,582 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:10:32,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:10:32,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1209571778, now seen corresponding path program 1 times [2024-10-12 18:10:32,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:10:32,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346664118] [2024-10-12 18:10:32,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:10:32,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:10:32,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:10:33,954 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 18:10:33,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:10:33,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346664118] [2024-10-12 18:10:33,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346664118] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:10:33,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210207586] [2024-10-12 18:10:33,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:10:33,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:10:33,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:10:33,958 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) [2024-10-12 18:10:33,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-12 18:10:35,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:10:35,910 INFO L255 TraceCheckSpWp]: Trace formula consists of 9834 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 18:10:35,916 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:10:35,927 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 18:10:35,927 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:10:35,972 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 18:10:35,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210207586] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:10:35,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:10:35,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-10-12 18:10:35,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208216396] [2024-10-12 18:10:35,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:10:35,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 18:10:35,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:10:35,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 18:10:35,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-10-12 18:10:35,974 INFO L87 Difference]: Start difference. First operand 69 states and 94 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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) [2024-10-12 18:10:36,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:10:36,692 INFO L93 Difference]: Finished difference Result 120 states and 167 transitions. [2024-10-12 18:10:36,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 18:10:36,692 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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 60 [2024-10-12 18:10:36,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:10:36,694 INFO L225 Difference]: With dead ends: 120 [2024-10-12 18:10:36,694 INFO L226 Difference]: Without dead ends: 78 [2024-10-12 18:10:36,695 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-10-12 18:10:36,695 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 15 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 18:10:36,696 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 247 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 18:10:36,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-10-12 18:10:36,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-10-12 18:10:36,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.3766233766233766) internal successors, (106), 77 states have internal predecessors, (106), 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) [2024-10-12 18:10:36,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 106 transitions. [2024-10-12 18:10:36,708 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 106 transitions. Word has length 60 [2024-10-12 18:10:36,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:10:36,708 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 106 transitions. [2024-10-12 18:10:36,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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) [2024-10-12 18:10:36,708 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 106 transitions. [2024-10-12 18:10:36,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-12 18:10:36,709 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:10:36,709 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:10:36,754 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-12 18:10:36,910 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 [2024-10-12 18:10:36,910 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:10:36,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:10:36,911 INFO L85 PathProgramCache]: Analyzing trace with hash 829702057, now seen corresponding path program 2 times [2024-10-12 18:10:36,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:10:36,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794915181] [2024-10-12 18:10:36,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:10:36,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:10:37,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:10:38,918 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 18:10:38,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:10:38,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794915181] [2024-10-12 18:10:38,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794915181] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:10:38,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244071900] [2024-10-12 18:10:38,919 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 18:10:38,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:10:38,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:10:38,921 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) [2024-10-12 18:10:38,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-12 18:10:40,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 18:10:40,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:10:40,947 INFO L255 TraceCheckSpWp]: Trace formula consists of 9888 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 18:10:40,955 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:10:41,006 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-12 18:10:41,006 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:10:41,037 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-12 18:10:41,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244071900] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:10:41,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:10:41,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 4] total 11 [2024-10-12 18:10:41,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602394620] [2024-10-12 18:10:41,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:10:41,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-12 18:10:41,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:10:41,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-12 18:10:41,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-12 18:10:41,040 INFO L87 Difference]: Start difference. First operand 78 states and 106 transitions. Second operand has 11 states, 11 states have (on average 8.181818181818182) internal successors, (90), 11 states have internal predecessors, (90), 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) [2024-10-12 18:10:41,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:10:41,841 INFO L93 Difference]: Finished difference Result 134 states and 187 transitions. [2024-10-12 18:10:41,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-12 18:10:41,842 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.181818181818182) internal successors, (90), 11 states have internal predecessors, (90), 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 69 [2024-10-12 18:10:41,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:10:41,842 INFO L225 Difference]: With dead ends: 134 [2024-10-12 18:10:41,842 INFO L226 Difference]: Without dead ends: 92 [2024-10-12 18:10:41,843 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-10-12 18:10:41,844 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 27 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 18:10:41,844 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 320 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 18:10:41,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-10-12 18:10:41,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90. [2024-10-12 18:10:41,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.3707865168539326) internal successors, (122), 89 states have internal predecessors, (122), 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) [2024-10-12 18:10:41,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 122 transitions. [2024-10-12 18:10:41,849 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 122 transitions. Word has length 69 [2024-10-12 18:10:41,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:10:41,849 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 122 transitions. [2024-10-12 18:10:41,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.181818181818182) internal successors, (90), 11 states have internal predecessors, (90), 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) [2024-10-12 18:10:41,850 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 122 transitions. [2024-10-12 18:10:41,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-12 18:10:41,850 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:10:41,851 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:10:41,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-12 18:10:42,051 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 [2024-10-12 18:10:42,052 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:10:42,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:10:42,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1700687192, now seen corresponding path program 3 times [2024-10-12 18:10:42,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:10:42,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436168140] [2024-10-12 18:10:42,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:10:42,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:10:42,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:10:44,261 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-12 18:10:44,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:10:44,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436168140] [2024-10-12 18:10:44,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436168140] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:10:44,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400667178] [2024-10-12 18:10:44,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 18:10:44,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:10:44,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:10:44,263 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) [2024-10-12 18:10:44,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-12 18:10:46,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-12 18:10:46,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:10:46,272 INFO L255 TraceCheckSpWp]: Trace formula consists of 9834 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-12 18:10:46,279 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:10:46,307 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-10-12 18:10:46,307 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:10:46,346 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-10-12 18:10:46,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400667178] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:10:46,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:10:46,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 12 [2024-10-12 18:10:46,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002959884] [2024-10-12 18:10:46,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:10:46,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-12 18:10:46,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:10:46,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-12 18:10:46,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-10-12 18:10:46,348 INFO L87 Difference]: Start difference. First operand 90 states and 122 transitions. Second operand has 12 states, 12 states have (on average 8.5) internal successors, (102), 12 states have internal predecessors, (102), 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) [2024-10-12 18:10:47,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:10:47,549 INFO L93 Difference]: Finished difference Result 155 states and 215 transitions. [2024-10-12 18:10:47,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-12 18:10:47,550 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.5) internal successors, (102), 12 states have internal predecessors, (102), 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 [2024-10-12 18:10:47,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:10:47,551 INFO L225 Difference]: With dead ends: 155 [2024-10-12 18:10:47,551 INFO L226 Difference]: Without dead ends: 104 [2024-10-12 18:10:47,551 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-10-12 18:10:47,552 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 22 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-12 18:10:47,552 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 508 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-12 18:10:47,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-10-12 18:10:47,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 102. [2024-10-12 18:10:47,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.3663366336633664) internal successors, (138), 101 states have internal predecessors, (138), 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) [2024-10-12 18:10:47,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 138 transitions. [2024-10-12 18:10:47,567 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 138 transitions. Word has length 81 [2024-10-12 18:10:47,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:10:47,567 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 138 transitions. [2024-10-12 18:10:47,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.5) internal successors, (102), 12 states have internal predecessors, (102), 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) [2024-10-12 18:10:47,568 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 138 transitions. [2024-10-12 18:10:47,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-10-12 18:10:47,569 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:10:47,569 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:10:47,631 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-12 18:10:47,773 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 [2024-10-12 18:10:47,774 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:10:47,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:10:47,775 INFO L85 PathProgramCache]: Analyzing trace with hash 205873381, now seen corresponding path program 4 times [2024-10-12 18:10:47,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:10:47,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866024349] [2024-10-12 18:10:47,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:10:47,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms