./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/memory-model/4SB.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/memory-model/4SB.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 15b0cbd6c91287c392a1dcce1e0a32a1c72d5f0acdee848dea776c36b74cf850 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-21 21:16:48,578 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-21 21:16:48,653 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-21 21:16:48,661 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-21 21:16:48,662 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-21 21:16:48,684 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-21 21:16:48,685 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-21 21:16:48,685 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-21 21:16:48,686 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-21 21:16:48,686 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-21 21:16:48,686 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-21 21:16:48,687 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-21 21:16:48,687 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-21 21:16:48,687 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-21 21:16:48,688 INFO L153 SettingsManager]: * Use SBE=true [2024-11-21 21:16:48,688 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-21 21:16:48,688 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-21 21:16:48,689 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-21 21:16:48,689 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-21 21:16:48,689 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-21 21:16:48,690 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-21 21:16:48,693 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-21 21:16:48,694 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-21 21:16:48,694 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-21 21:16:48,694 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-21 21:16:48,695 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-21 21:16:48,695 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-21 21:16:48,695 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-21 21:16:48,695 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-21 21:16:48,695 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-21 21:16:48,696 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-21 21:16:48,696 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-21 21:16:48,696 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 21:16:48,696 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-21 21:16:48,697 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-21 21:16:48,697 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-21 21:16:48,700 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-21 21:16:48,701 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-21 21:16:48,701 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-21 21:16:48,701 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-21 21:16:48,701 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-21 21:16:48,702 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-21 21:16:48,702 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 15b0cbd6c91287c392a1dcce1e0a32a1c72d5f0acdee848dea776c36b74cf850 [2024-11-21 21:16:48,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-21 21:16:48,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-21 21:16:48,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-21 21:16:48,967 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-21 21:16:48,967 INFO L274 PluginConnector]: CDTParser initialized [2024-11-21 21:16:48,968 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memory-model/4SB.i [2024-11-21 21:16:50,366 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-21 21:16:50,570 INFO L384 CDTParser]: Found 1 translation units. [2024-11-21 21:16:50,573 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memory-model/4SB.i [2024-11-21 21:16:50,585 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed3ad353a/39c601c5777343a28bc1f8d55821c2e4/FLAG83ce8cc2c [2024-11-21 21:16:50,602 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed3ad353a/39c601c5777343a28bc1f8d55821c2e4 [2024-11-21 21:16:50,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-21 21:16:50,606 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-21 21:16:50,609 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-21 21:16:50,609 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-21 21:16:50,616 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-21 21:16:50,616 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:16:50" (1/1) ... [2024-11-21 21:16:50,617 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35a69a4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:16:50, skipping insertion in model container [2024-11-21 21:16:50,617 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:16:50" (1/1) ... [2024-11-21 21:16:50,681 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-21 21:16:51,022 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memory-model/4SB.i[21105,21118] [2024-11-21 21:16:51,032 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 21:16:51,046 INFO L200 MainTranslator]: Completed pre-run [2024-11-21 21:16:51,157 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memory-model/4SB.i[21105,21118] [2024-11-21 21:16:51,162 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 21:16:51,185 INFO L204 MainTranslator]: Completed translation [2024-11-21 21:16:51,185 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:16:51 WrapperNode [2024-11-21 21:16:51,186 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-21 21:16:51,187 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-21 21:16:51,187 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-21 21:16:51,187 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-21 21:16:51,193 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:16:51" (1/1) ... [2024-11-21 21:16:51,236 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:16:51" (1/1) ... [2024-11-21 21:16:51,322 INFO L138 Inliner]: procedures = 27, calls = 680, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 1638 [2024-11-21 21:16:51,323 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-21 21:16:51,324 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-21 21:16:51,324 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-21 21:16:51,324 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-21 21:16:51,334 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:16:51" (1/1) ... [2024-11-21 21:16:51,334 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:16:51" (1/1) ... [2024-11-21 21:16:51,352 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:16:51" (1/1) ... [2024-11-21 21:16:51,403 INFO L175 MemorySlicer]: Split 488 memory accesses to 16 slices as follows [152, 13, 13, 13, 13, 10, 15, 60, 10, 96, 3, 10, 12, 11, 45, 12]. 31 percent of accesses are in the largest equivalence class. The 36 initializations are split as follows [0, 5, 5, 5, 5, 0, 0, 0, 0, 0, 0, 1, 10, 0, 0, 5]. The 171 writes are split as follows [80, 2, 2, 2, 2, 5, 5, 20, 5, 20, 2, 3, 1, 5, 15, 2]. [2024-11-21 21:16:51,406 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:16:51" (1/1) ... [2024-11-21 21:16:51,406 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:16:51" (1/1) ... [2024-11-21 21:16:51,473 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:16:51" (1/1) ... [2024-11-21 21:16:51,484 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:16:51" (1/1) ... [2024-11-21 21:16:51,491 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:16:51" (1/1) ... [2024-11-21 21:16:51,497 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:16:51" (1/1) ... [2024-11-21 21:16:51,512 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-21 21:16:51,513 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-21 21:16:51,514 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-21 21:16:51,514 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-21 21:16:51,515 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:16:51" (1/1) ... [2024-11-21 21:16:51,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 21:16:51,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:16:51,550 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-21 21:16:51,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-21 21:16:51,599 INFO L130 BoogieDeclarations]: Found specification of procedure store_buffering_4_conditions [2024-11-21 21:16:51,599 INFO L138 BoogieDeclarations]: Found implementation of procedure store_buffering_4_conditions [2024-11-21 21:16:51,599 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_write [2024-11-21 21:16:51,600 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_write [2024-11-21 21:16:51,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_headerT [2024-11-21 21:16:51,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_nondet_headerT [2024-11-21 21:16:51,600 INFO L130 BoogieDeclarations]: Found specification of procedure stepWriteBuffer [2024-11-21 21:16:51,600 INFO L138 BoogieDeclarations]: Found implementation of procedure stepWriteBuffer [2024-11-21 21:16:51,601 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_read [2024-11-21 21:16:51,601 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_read [2024-11-21 21:16:51,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-21 21:16:51,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-21 21:16:51,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-21 21:16:51,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-21 21:16:51,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-21 21:16:51,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-21 21:16:51,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-21 21:16:51,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-21 21:16:51,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-21 21:16:51,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-21 21:16:51,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-21 21:16:51,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-21 21:16:51,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-21 21:16:51,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-21 21:16:51,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-11-21 21:16:51,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2024-11-21 21:16:51,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2024-11-21 21:16:51,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-21 21:16:51,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-21 21:16:51,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-21 21:16:51,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-21 21:16:51,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-21 21:16:51,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-21 21:16:51,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-21 21:16:51,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-21 21:16:51,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-21 21:16:51,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-21 21:16:51,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-21 21:16:51,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-21 21:16:51,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-21 21:16:51,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-11-21 21:16:51,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2024-11-21 21:16:51,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2024-11-21 21:16:51,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-21 21:16:51,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-21 21:16:51,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-21 21:16:51,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-21 21:16:51,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-21 21:16:51,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-21 21:16:51,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-21 21:16:51,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-21 21:16:51,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-21 21:16:51,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-21 21:16:51,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-21 21:16:51,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-21 21:16:51,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-21 21:16:51,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-21 21:16:51,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-21 21:16:51,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-21 21:16:51,610 INFO L130 BoogieDeclarations]: Found specification of procedure initWriteBuffer [2024-11-21 21:16:51,610 INFO L138 BoogieDeclarations]: Found implementation of procedure initWriteBuffer [2024-11-21 21:16:51,610 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_fence [2024-11-21 21:16:51,610 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_fence [2024-11-21 21:16:51,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-21 21:16:51,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-21 21:16:51,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-21 21:16:51,823 INFO L238 CfgBuilder]: Building ICFG [2024-11-21 21:16:51,829 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-21 21:16:53,536 INFO L? ?]: Removed 214 outVars from TransFormulas that were not future-live. [2024-11-21 21:16:53,536 INFO L287 CfgBuilder]: Performing block encoding [2024-11-21 21:16:53,554 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-21 21:16:53,554 INFO L316 CfgBuilder]: Removed 18 assume(true) statements. [2024-11-21 21:16:53,555 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:16:53 BoogieIcfgContainer [2024-11-21 21:16:53,555 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-21 21:16:53,556 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-21 21:16:53,557 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-21 21:16:53,559 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-21 21:16:53,560 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:16:50" (1/3) ... [2024-11-21 21:16:53,560 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ab9e40b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:16:53, skipping insertion in model container [2024-11-21 21:16:53,561 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:16:51" (2/3) ... [2024-11-21 21:16:53,561 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ab9e40b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:16:53, skipping insertion in model container [2024-11-21 21:16:53,561 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:16:53" (3/3) ... [2024-11-21 21:16:53,562 INFO L112 eAbstractionObserver]: Analyzing ICFG 4SB.i [2024-11-21 21:16:53,578 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-21 21:16:53,578 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-21 21:16:53,653 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-21 21:16:53,660 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;@19aebf1d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-21 21:16:53,660 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-21 21:16:53,665 INFO L276 IsEmpty]: Start isEmpty. Operand has 282 states, 247 states have (on average 1.5789473684210527) internal successors, (390), 252 states have internal predecessors, (390), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-21 21:16:53,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-21 21:16:53,684 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:16:53,685 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:16:53,685 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:16:53,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:16:53,691 INFO L85 PathProgramCache]: Analyzing trace with hash -992657394, now seen corresponding path program 1 times [2024-11-21 21:16:53,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:16:53,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301310896] [2024-11-21 21:16:53,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:16:53,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:16:54,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:16:54,490 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-21 21:16:54,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:16:54,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301310896] [2024-11-21 21:16:54,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301310896] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:16:54,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 21:16:54,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 21:16:54,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24225496] [2024-11-21 21:16:54,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:16:54,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:16:54,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:16:54,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:16:54,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 21:16:54,521 INFO L87 Difference]: Start difference. First operand has 282 states, 247 states have (on average 1.5789473684210527) internal successors, (390), 252 states have internal predecessors, (390), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:16:54,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:16:54,610 INFO L93 Difference]: Finished difference Result 562 states and 890 transitions. [2024-11-21 21:16:54,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:16:54,618 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), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 74 [2024-11-21 21:16:54,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:16:54,631 INFO L225 Difference]: With dead ends: 562 [2024-11-21 21:16:54,633 INFO L226 Difference]: Without dead ends: 269 [2024-11-21 21:16:54,638 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 21:16:54,641 INFO L432 NwaCegarLoop]: 384 mSDtfsCounter, 1 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 21:16:54,641 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 764 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 21:16:54,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2024-11-21 21:16:54,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 268. [2024-11-21 21:16:54,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 234 states have (on average 1.311965811965812) internal successors, (307), 238 states have internal predecessors, (307), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-21 21:16:54,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 359 transitions. [2024-11-21 21:16:54,695 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 359 transitions. Word has length 74 [2024-11-21 21:16:54,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:16:54,695 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 359 transitions. [2024-11-21 21:16:54,696 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), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:16:54,696 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 359 transitions. [2024-11-21 21:16:54,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-21 21:16:54,701 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:16:54,701 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:16:54,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-21 21:16:54,702 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:16:54,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:16:54,702 INFO L85 PathProgramCache]: Analyzing trace with hash 456113258, now seen corresponding path program 1 times [2024-11-21 21:16:54,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:16:54,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683041665] [2024-11-21 21:16:54,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:16:54,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:16:54,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:16:55,172 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-21 21:16:55,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:16:55,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683041665] [2024-11-21 21:16:55,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683041665] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:16:55,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097182027] [2024-11-21 21:16:55,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:16:55,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:16:55,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:16:55,178 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 21:16:55,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-21 21:16:55,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:16:55,812 INFO L255 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-21 21:16:55,819 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:16:55,849 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-21 21:16:55,852 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:16:55,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097182027] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:16:55,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:16:55,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-21 21:16:55,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563830734] [2024-11-21 21:16:55,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:16:55,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:16:55,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:16:55,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:16:55,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:16:55,858 INFO L87 Difference]: Start difference. First operand 268 states and 359 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-21 21:16:55,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:16:55,892 INFO L93 Difference]: Finished difference Result 530 states and 715 transitions. [2024-11-21 21:16:55,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:16:55,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 77 [2024-11-21 21:16:55,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:16:55,895 INFO L225 Difference]: With dead ends: 530 [2024-11-21 21:16:55,895 INFO L226 Difference]: Without dead ends: 270 [2024-11-21 21:16:55,896 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:16:55,897 INFO L432 NwaCegarLoop]: 356 mSDtfsCounter, 1 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 21:16:55,898 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 709 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 21:16:55,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2024-11-21 21:16:55,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 269. [2024-11-21 21:16:55,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 235 states have (on average 1.3106382978723403) internal successors, (308), 239 states have internal predecessors, (308), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-21 21:16:55,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 360 transitions. [2024-11-21 21:16:55,924 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 360 transitions. Word has length 77 [2024-11-21 21:16:55,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:16:55,925 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 360 transitions. [2024-11-21 21:16:55,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-21 21:16:55,925 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 360 transitions. [2024-11-21 21:16:55,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-21 21:16:55,928 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:16:55,928 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:16:55,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-21 21:16:56,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:16:56,129 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:16:56,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:16:56,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1437341938, now seen corresponding path program 1 times [2024-11-21 21:16:56,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:16:56,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471538016] [2024-11-21 21:16:56,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:16:56,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:16:56,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:16:56,444 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-21 21:16:56,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:16:56,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471538016] [2024-11-21 21:16:56,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471538016] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:16:56,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377931649] [2024-11-21 21:16:56,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:16:56,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:16:56,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:16:56,450 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 21:16:56,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-21 21:16:56,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:16:56,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 710 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-21 21:16:56,968 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:16:56,988 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-11-21 21:16:56,992 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:16:56,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377931649] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:16:56,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:16:56,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-21 21:16:56,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913398440] [2024-11-21 21:16:56,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:16:56,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:16:56,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:16:56,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:16:56,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:16:56,995 INFO L87 Difference]: Start difference. First operand 269 states and 360 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-21 21:16:57,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:16:57,046 INFO L93 Difference]: Finished difference Result 517 states and 693 transitions. [2024-11-21 21:16:57,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:16:57,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 85 [2024-11-21 21:16:57,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:16:57,050 INFO L225 Difference]: With dead ends: 517 [2024-11-21 21:16:57,052 INFO L226 Difference]: Without dead ends: 276 [2024-11-21 21:16:57,053 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:16:57,054 INFO L432 NwaCegarLoop]: 353 mSDtfsCounter, 6 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 21:16:57,056 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 702 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 21:16:57,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2024-11-21 21:16:57,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 270. [2024-11-21 21:16:57,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 236 states have (on average 1.3093220338983051) internal successors, (309), 240 states have internal predecessors, (309), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-21 21:16:57,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 361 transitions. [2024-11-21 21:16:57,086 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 361 transitions. Word has length 85 [2024-11-21 21:16:57,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:16:57,087 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 361 transitions. [2024-11-21 21:16:57,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-21 21:16:57,087 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 361 transitions. [2024-11-21 21:16:57,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-21 21:16:57,089 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:16:57,090 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:16:57,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-21 21:16:57,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-21 21:16:57,298 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:16:57,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:16:57,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1782099748, now seen corresponding path program 1 times [2024-11-21 21:16:57,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:16:57,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521232435] [2024-11-21 21:16:57,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:16:57,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:16:57,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:16:57,616 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-21 21:16:57,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:16:57,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521232435] [2024-11-21 21:16:57,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521232435] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:16:57,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828373991] [2024-11-21 21:16:57,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:16:57,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:16:57,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:16:57,621 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 21:16:57,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-21 21:16:58,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:16:58,165 INFO L255 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-21 21:16:58,171 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:16:58,186 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-21 21:16:58,187 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:16:58,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828373991] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:16:58,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:16:58,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-21 21:16:58,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861534204] [2024-11-21 21:16:58,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:16:58,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:16:58,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:16:58,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:16:58,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:16:58,193 INFO L87 Difference]: Start difference. First operand 270 states and 361 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-21 21:16:58,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:16:58,231 INFO L93 Difference]: Finished difference Result 510 states and 683 transitions. [2024-11-21 21:16:58,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:16:58,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 88 [2024-11-21 21:16:58,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:16:58,236 INFO L225 Difference]: With dead ends: 510 [2024-11-21 21:16:58,236 INFO L226 Difference]: Without dead ends: 277 [2024-11-21 21:16:58,236 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:16:58,237 INFO L432 NwaCegarLoop]: 357 mSDtfsCounter, 6 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 21:16:58,238 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 705 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 21:16:58,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2024-11-21 21:16:58,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 271. [2024-11-21 21:16:58,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 237 states have (on average 1.3080168776371308) internal successors, (310), 241 states have internal predecessors, (310), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-21 21:16:58,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 362 transitions. [2024-11-21 21:16:58,248 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 362 transitions. Word has length 88 [2024-11-21 21:16:58,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:16:58,249 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 362 transitions. [2024-11-21 21:16:58,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-21 21:16:58,249 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 362 transitions. [2024-11-21 21:16:58,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-21 21:16:58,251 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:16:58,251 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:16:58,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-21 21:16:58,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:16:58,452 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:16:58,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:16:58,452 INFO L85 PathProgramCache]: Analyzing trace with hash 2144473698, now seen corresponding path program 1 times [2024-11-21 21:16:58,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:16:58,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975105101] [2024-11-21 21:16:58,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:16:58,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:16:58,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:16:58,780 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-21 21:16:58,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:16:58,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975105101] [2024-11-21 21:16:58,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975105101] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:16:58,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601263158] [2024-11-21 21:16:58,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:16:58,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:16:58,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:16:58,784 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 21:16:58,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-21 21:16:59,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:16:59,304 INFO L255 TraceCheckSpWp]: Trace formula consists of 718 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-21 21:16:59,307 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:16:59,325 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-21 21:16:59,326 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:16:59,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601263158] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:16:59,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:16:59,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-21 21:16:59,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952184023] [2024-11-21 21:16:59,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:16:59,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:16:59,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:16:59,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:16:59,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:16:59,328 INFO L87 Difference]: Start difference. First operand 271 states and 362 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-21 21:16:59,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:16:59,358 INFO L93 Difference]: Finished difference Result 503 states and 673 transitions. [2024-11-21 21:16:59,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:16:59,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 91 [2024-11-21 21:16:59,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:16:59,362 INFO L225 Difference]: With dead ends: 503 [2024-11-21 21:16:59,362 INFO L226 Difference]: Without dead ends: 278 [2024-11-21 21:16:59,363 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:16:59,364 INFO L432 NwaCegarLoop]: 357 mSDtfsCounter, 6 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 21:16:59,364 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 705 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 21:16:59,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2024-11-21 21:16:59,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 272. [2024-11-21 21:16:59,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 238 states have (on average 1.3067226890756303) internal successors, (311), 242 states have internal predecessors, (311), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-21 21:16:59,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 363 transitions. [2024-11-21 21:16:59,380 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 363 transitions. Word has length 91 [2024-11-21 21:16:59,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:16:59,383 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 363 transitions. [2024-11-21 21:16:59,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-21 21:16:59,383 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 363 transitions. [2024-11-21 21:16:59,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-21 21:16:59,384 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:16:59,385 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:16:59,395 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-21 21:16:59,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:16:59,585 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:16:59,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:16:59,586 INFO L85 PathProgramCache]: Analyzing trace with hash 686702796, now seen corresponding path program 1 times [2024-11-21 21:16:59,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:16:59,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642011965] [2024-11-21 21:16:59,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:16:59,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:16:59,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:16:59,909 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-21 21:16:59,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:16:59,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642011965] [2024-11-21 21:16:59,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642011965] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:16:59,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462122339] [2024-11-21 21:16:59,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:16:59,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:16:59,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:16:59,912 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 21:16:59,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-21 21:17:00,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:00,434 INFO L255 TraceCheckSpWp]: Trace formula consists of 722 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-21 21:17:00,437 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:17:00,448 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-21 21:17:00,448 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:17:00,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462122339] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:17:00,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:17:00,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-21 21:17:00,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634859913] [2024-11-21 21:17:00,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:17:00,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:17:00,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:00,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:17:00,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:17:00,451 INFO L87 Difference]: Start difference. First operand 272 states and 363 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-21 21:17:00,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:00,482 INFO L93 Difference]: Finished difference Result 492 states and 660 transitions. [2024-11-21 21:17:00,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:17:00,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 94 [2024-11-21 21:17:00,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:00,485 INFO L225 Difference]: With dead ends: 492 [2024-11-21 21:17:00,486 INFO L226 Difference]: Without dead ends: 279 [2024-11-21 21:17:00,488 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:17:00,489 INFO L432 NwaCegarLoop]: 353 mSDtfsCounter, 6 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 21:17:00,489 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 701 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 21:17:00,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2024-11-21 21:17:00,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 273. [2024-11-21 21:17:00,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 239 states have (on average 1.3054393305439331) internal successors, (312), 243 states have internal predecessors, (312), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-21 21:17:00,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 364 transitions. [2024-11-21 21:17:00,498 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 364 transitions. Word has length 94 [2024-11-21 21:17:00,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:00,498 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 364 transitions. [2024-11-21 21:17:00,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-21 21:17:00,498 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 364 transitions. [2024-11-21 21:17:00,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-21 21:17:00,500 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:00,500 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:17:00,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-21 21:17:00,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:00,701 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:00,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:00,701 INFO L85 PathProgramCache]: Analyzing trace with hash -261696558, now seen corresponding path program 1 times [2024-11-21 21:17:00,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:00,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510146243] [2024-11-21 21:17:00,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:00,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:00,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:00,945 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-21 21:17:00,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:00,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510146243] [2024-11-21 21:17:00,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510146243] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:17:00,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450049818] [2024-11-21 21:17:00,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:00,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:00,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:17:00,949 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) [2024-11-21 21:17:00,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-21 21:17:01,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:01,366 INFO L255 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-21 21:17:01,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:17:01,381 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-21 21:17:01,382 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:17:01,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450049818] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:17:01,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:17:01,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-21 21:17:01,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401322488] [2024-11-21 21:17:01,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:17:01,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:17:01,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:01,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:17:01,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:17:01,384 INFO L87 Difference]: Start difference. First operand 273 states and 364 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:01,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:01,499 INFO L93 Difference]: Finished difference Result 341 states and 471 transitions. [2024-11-21 21:17:01,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:17:01,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 97 [2024-11-21 21:17:01,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:01,502 INFO L225 Difference]: With dead ends: 341 [2024-11-21 21:17:01,502 INFO L226 Difference]: Without dead ends: 331 [2024-11-21 21:17:01,502 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:17:01,503 INFO L432 NwaCegarLoop]: 313 mSDtfsCounter, 93 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 21:17:01,503 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 623 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 21:17:01,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2024-11-21 21:17:01,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 274. [2024-11-21 21:17:01,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 240 states have (on average 1.3041666666666667) internal successors, (313), 244 states have internal predecessors, (313), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-21 21:17:01,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 365 transitions. [2024-11-21 21:17:01,511 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 365 transitions. Word has length 97 [2024-11-21 21:17:01,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:01,512 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 365 transitions. [2024-11-21 21:17:01,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:01,512 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 365 transitions. [2024-11-21 21:17:01,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-21 21:17:01,513 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:01,513 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:17:01,523 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-21 21:17:01,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:01,714 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:01,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:01,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1945761786, now seen corresponding path program 1 times [2024-11-21 21:17:01,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:01,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767043188] [2024-11-21 21:17:01,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:01,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:01,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:02,035 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-21 21:17:02,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:02,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767043188] [2024-11-21 21:17:02,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767043188] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:17:02,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997967034] [2024-11-21 21:17:02,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:02,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:02,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:17:02,040 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) [2024-11-21 21:17:02,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-21 21:17:02,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:02,577 INFO L255 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 21:17:02,580 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:17:02,606 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-21 21:17:02,606 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:17:02,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997967034] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:17:02,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:17:02,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-21 21:17:02,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520766003] [2024-11-21 21:17:02,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:17:02,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:17:02,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:02,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:17:02,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:17:02,609 INFO L87 Difference]: Start difference. First operand 274 states and 365 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:02,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:02,625 INFO L93 Difference]: Finished difference Result 342 states and 472 transitions. [2024-11-21 21:17:02,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:17:02,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 107 [2024-11-21 21:17:02,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:02,629 INFO L225 Difference]: With dead ends: 342 [2024-11-21 21:17:02,629 INFO L226 Difference]: Without dead ends: 332 [2024-11-21 21:17:02,629 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:17:02,630 INFO L432 NwaCegarLoop]: 356 mSDtfsCounter, 83 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 21:17:02,631 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 710 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 21:17:02,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2024-11-21 21:17:02,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 331. [2024-11-21 21:17:02,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 297 states have (on average 1.367003367003367) internal successors, (406), 301 states have internal predecessors, (406), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-21 21:17:02,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 458 transitions. [2024-11-21 21:17:02,641 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 458 transitions. Word has length 107 [2024-11-21 21:17:02,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:02,642 INFO L471 AbstractCegarLoop]: Abstraction has 331 states and 458 transitions. [2024-11-21 21:17:02,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:02,643 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 458 transitions. [2024-11-21 21:17:02,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-21 21:17:02,644 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:02,644 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:17:02,655 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-21 21:17:02,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:02,846 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:02,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:02,846 INFO L85 PathProgramCache]: Analyzing trace with hash -815947690, now seen corresponding path program 1 times [2024-11-21 21:17:02,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:02,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941656517] [2024-11-21 21:17:02,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:02,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:02,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:03,084 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-21 21:17:03,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:03,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941656517] [2024-11-21 21:17:03,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941656517] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:17:03,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789234405] [2024-11-21 21:17:03,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:03,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:03,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:17:03,087 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) [2024-11-21 21:17:03,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-21 21:17:03,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:03,649 INFO L255 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 21:17:03,652 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:17:03,684 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-21 21:17:03,684 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:17:03,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789234405] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:17:03,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:17:03,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-21 21:17:03,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098897216] [2024-11-21 21:17:03,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:17:03,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:17:03,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:03,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:17:03,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:17:03,687 INFO L87 Difference]: Start difference. First operand 331 states and 458 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:03,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:03,701 INFO L93 Difference]: Finished difference Result 457 states and 659 transitions. [2024-11-21 21:17:03,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:17:03,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 113 [2024-11-21 21:17:03,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:03,704 INFO L225 Difference]: With dead ends: 457 [2024-11-21 21:17:03,704 INFO L226 Difference]: Without dead ends: 447 [2024-11-21 21:17:03,704 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:17:03,705 INFO L432 NwaCegarLoop]: 356 mSDtfsCounter, 77 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 21:17:03,705 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 710 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 21:17:03,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2024-11-21 21:17:03,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2024-11-21 21:17:03,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 413 states have (on average 1.4382566585956416) internal successors, (594), 417 states have internal predecessors, (594), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-21 21:17:03,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 646 transitions. [2024-11-21 21:17:03,717 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 646 transitions. Word has length 113 [2024-11-21 21:17:03,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:03,717 INFO L471 AbstractCegarLoop]: Abstraction has 447 states and 646 transitions. [2024-11-21 21:17:03,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:03,717 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 646 transitions. [2024-11-21 21:17:03,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-21 21:17:03,719 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:03,719 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:17:03,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-21 21:17:03,920 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,SelfDestructingSolverStorable8 [2024-11-21 21:17:03,920 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:03,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:03,921 INFO L85 PathProgramCache]: Analyzing trace with hash -449081176, now seen corresponding path program 1 times [2024-11-21 21:17:03,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:03,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853327341] [2024-11-21 21:17:03,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:03,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:04,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:04,165 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-21 21:17:04,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:04,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853327341] [2024-11-21 21:17:04,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853327341] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:17:04,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404359524] [2024-11-21 21:17:04,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:04,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:04,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:17:04,168 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) [2024-11-21 21:17:04,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-21 21:17:04,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:04,702 INFO L255 TraceCheckSpWp]: Trace formula consists of 877 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 21:17:04,706 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:17:04,731 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-21 21:17:04,732 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:17:04,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404359524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:17:04,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:17:04,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-21 21:17:04,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115478968] [2024-11-21 21:17:04,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:17:04,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 21:17:04,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:04,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 21:17:04,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-21 21:17:04,734 INFO L87 Difference]: Start difference. First operand 447 states and 646 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:04,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:04,759 INFO L93 Difference]: Finished difference Result 701 states and 1051 transitions. [2024-11-21 21:17:04,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 21:17:04,759 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 151 [2024-11-21 21:17:04,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:04,762 INFO L225 Difference]: With dead ends: 701 [2024-11-21 21:17:04,762 INFO L226 Difference]: Without dead ends: 459 [2024-11-21 21:17:04,762 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-21 21:17:04,763 INFO L432 NwaCegarLoop]: 355 mSDtfsCounter, 1 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 21:17:04,763 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1055 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 21:17:04,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2024-11-21 21:17:04,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 455. [2024-11-21 21:17:04,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 421 states have (on average 1.4299287410926367) internal successors, (602), 425 states have internal predecessors, (602), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-21 21:17:04,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 654 transitions. [2024-11-21 21:17:04,774 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 654 transitions. Word has length 151 [2024-11-21 21:17:04,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:04,775 INFO L471 AbstractCegarLoop]: Abstraction has 455 states and 654 transitions. [2024-11-21 21:17:04,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:04,775 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 654 transitions. [2024-11-21 21:17:04,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-21 21:17:04,777 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:04,777 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:17:04,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-21 21:17:04,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-21 21:17:04,978 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:04,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:04,978 INFO L85 PathProgramCache]: Analyzing trace with hash 252518698, now seen corresponding path program 1 times [2024-11-21 21:17:04,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:04,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317218784] [2024-11-21 21:17:04,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:04,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:05,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:05,258 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-21 21:17:05,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:05,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317218784] [2024-11-21 21:17:05,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317218784] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:17:05,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075526641] [2024-11-21 21:17:05,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:05,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:05,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:17:05,262 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 21:17:05,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-21 21:17:05,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:05,885 INFO L255 TraceCheckSpWp]: Trace formula consists of 874 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 21:17:05,888 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:17:05,904 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-21 21:17:05,904 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:17:05,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075526641] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:17:05,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:17:05,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-21 21:17:05,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652016885] [2024-11-21 21:17:05,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:17:05,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 21:17:05,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:05,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 21:17:05,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-21 21:17:05,907 INFO L87 Difference]: Start difference. First operand 455 states and 654 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:05,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:05,931 INFO L93 Difference]: Finished difference Result 717 states and 1067 transitions. [2024-11-21 21:17:05,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 21:17:05,932 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 151 [2024-11-21 21:17:05,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:05,934 INFO L225 Difference]: With dead ends: 717 [2024-11-21 21:17:05,934 INFO L226 Difference]: Without dead ends: 467 [2024-11-21 21:17:05,935 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-21 21:17:05,935 INFO L432 NwaCegarLoop]: 355 mSDtfsCounter, 1 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 21:17:05,935 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1055 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 21:17:05,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2024-11-21 21:17:05,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 463. [2024-11-21 21:17:05,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 429 states have (on average 1.421911421911422) internal successors, (610), 433 states have internal predecessors, (610), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-21 21:17:05,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 662 transitions. [2024-11-21 21:17:05,947 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 662 transitions. Word has length 151 [2024-11-21 21:17:05,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:05,947 INFO L471 AbstractCegarLoop]: Abstraction has 463 states and 662 transitions. [2024-11-21 21:17:05,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:05,948 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 662 transitions. [2024-11-21 21:17:05,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-21 21:17:05,950 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:05,950 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:17:05,960 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-21 21:17:06,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-21 21:17:06,151 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:06,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:06,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1638722092, now seen corresponding path program 1 times [2024-11-21 21:17:06,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:06,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123204976] [2024-11-21 21:17:06,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:06,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:06,401 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-21 21:17:06,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:06,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123204976] [2024-11-21 21:17:06,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123204976] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:17:06,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419822855] [2024-11-21 21:17:06,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:06,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:06,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:17:06,405 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 21:17:06,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-21 21:17:06,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:06,923 INFO L255 TraceCheckSpWp]: Trace formula consists of 871 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 21:17:06,926 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:17:06,946 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-21 21:17:06,946 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:17:06,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419822855] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:17:06,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:17:06,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-21 21:17:06,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040839122] [2024-11-21 21:17:06,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:17:06,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 21:17:06,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:06,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 21:17:06,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-21 21:17:06,948 INFO L87 Difference]: Start difference. First operand 463 states and 662 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:06,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:06,979 INFO L93 Difference]: Finished difference Result 733 states and 1087 transitions. [2024-11-21 21:17:06,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 21:17:06,980 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 151 [2024-11-21 21:17:06,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:06,982 INFO L225 Difference]: With dead ends: 733 [2024-11-21 21:17:06,983 INFO L226 Difference]: Without dead ends: 475 [2024-11-21 21:17:06,983 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-21 21:17:06,984 INFO L432 NwaCegarLoop]: 355 mSDtfsCounter, 1 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 21:17:06,984 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1057 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 21:17:06,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2024-11-21 21:17:06,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 475. [2024-11-21 21:17:06,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 441 states have (on average 1.4104308390022675) internal successors, (622), 445 states have internal predecessors, (622), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-21 21:17:06,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 674 transitions. [2024-11-21 21:17:06,994 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 674 transitions. Word has length 151 [2024-11-21 21:17:06,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:06,995 INFO L471 AbstractCegarLoop]: Abstraction has 475 states and 674 transitions. [2024-11-21 21:17:06,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:06,995 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 674 transitions. [2024-11-21 21:17:06,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-21 21:17:06,997 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:06,997 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:17:07,008 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-21 21:17:07,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-21 21:17:07,202 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:07,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:07,202 INFO L85 PathProgramCache]: Analyzing trace with hash -733017170, now seen corresponding path program 1 times [2024-11-21 21:17:07,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:07,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549930285] [2024-11-21 21:17:07,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:07,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:07,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:07,434 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-21 21:17:07,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:07,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549930285] [2024-11-21 21:17:07,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549930285] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:17:07,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034683848] [2024-11-21 21:17:07,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:07,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:07,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:17:07,438 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 21:17:07,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-21 21:17:07,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:07,960 INFO L255 TraceCheckSpWp]: Trace formula consists of 868 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 21:17:07,963 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:17:07,979 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-21 21:17:07,979 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:17:07,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034683848] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:17:07,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:17:07,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-21 21:17:07,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096708362] [2024-11-21 21:17:07,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:17:07,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 21:17:07,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:07,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 21:17:07,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-21 21:17:07,981 INFO L87 Difference]: Start difference. First operand 475 states and 674 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:08,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:08,016 INFO L93 Difference]: Finished difference Result 757 states and 1107 transitions. [2024-11-21 21:17:08,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 21:17:08,016 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 151 [2024-11-21 21:17:08,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:08,019 INFO L225 Difference]: With dead ends: 757 [2024-11-21 21:17:08,019 INFO L226 Difference]: Without dead ends: 487 [2024-11-21 21:17:08,019 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-21 21:17:08,020 INFO L432 NwaCegarLoop]: 355 mSDtfsCounter, 1 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 21:17:08,021 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1055 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 21:17:08,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2024-11-21 21:17:08,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 483. [2024-11-21 21:17:08,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 449 states have (on average 1.4031180400890868) internal successors, (630), 453 states have internal predecessors, (630), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-21 21:17:08,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 682 transitions. [2024-11-21 21:17:08,035 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 682 transitions. Word has length 151 [2024-11-21 21:17:08,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:08,035 INFO L471 AbstractCegarLoop]: Abstraction has 483 states and 682 transitions. [2024-11-21 21:17:08,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:08,036 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 682 transitions. [2024-11-21 21:17:08,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-21 21:17:08,038 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:08,038 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:17:08,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-21 21:17:08,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-21 21:17:08,239 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:08,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:08,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1756511792, now seen corresponding path program 1 times [2024-11-21 21:17:08,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:08,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295912841] [2024-11-21 21:17:08,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:08,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:08,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:08,499 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-21 21:17:08,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:08,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295912841] [2024-11-21 21:17:08,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295912841] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:17:08,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060254972] [2024-11-21 21:17:08,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:08,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:08,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:17:08,502 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 21:17:08,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-21 21:17:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:09,123 INFO L255 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 21:17:09,126 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:17:09,146 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-21 21:17:09,147 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:17:09,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060254972] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:17:09,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:17:09,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-21 21:17:09,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969844464] [2024-11-21 21:17:09,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:17:09,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 21:17:09,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:09,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 21:17:09,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-21 21:17:09,149 INFO L87 Difference]: Start difference. First operand 483 states and 682 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:09,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:09,174 INFO L93 Difference]: Finished difference Result 773 states and 1127 transitions. [2024-11-21 21:17:09,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 21:17:09,175 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 151 [2024-11-21 21:17:09,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:09,177 INFO L225 Difference]: With dead ends: 773 [2024-11-21 21:17:09,177 INFO L226 Difference]: Without dead ends: 495 [2024-11-21 21:17:09,178 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-21 21:17:09,178 INFO L432 NwaCegarLoop]: 355 mSDtfsCounter, 1 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 21:17:09,179 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1057 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 21:17:09,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2024-11-21 21:17:09,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 495. [2024-11-21 21:17:09,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 461 states have (on average 1.3926247288503253) internal successors, (642), 465 states have internal predecessors, (642), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-21 21:17:09,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 694 transitions. [2024-11-21 21:17:09,190 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 694 transitions. Word has length 151 [2024-11-21 21:17:09,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:09,190 INFO L471 AbstractCegarLoop]: Abstraction has 495 states and 694 transitions. [2024-11-21 21:17:09,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:09,190 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 694 transitions. [2024-11-21 21:17:09,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-21 21:17:09,192 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:09,192 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:17:09,203 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-21 21:17:09,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-21 21:17:09,393 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:09,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:09,393 INFO L85 PathProgramCache]: Analyzing trace with hash -2115753678, now seen corresponding path program 1 times [2024-11-21 21:17:09,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:09,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431577426] [2024-11-21 21:17:09,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:09,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:09,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:09,648 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-21 21:17:09,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:09,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431577426] [2024-11-21 21:17:09,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431577426] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:17:09,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894289592] [2024-11-21 21:17:09,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:09,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:09,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:17:09,651 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 21:17:09,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-21 21:17:10,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:10,299 INFO L255 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 21:17:10,303 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:17:10,323 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-21 21:17:10,323 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:17:10,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894289592] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:17:10,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:17:10,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-21 21:17:10,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556541820] [2024-11-21 21:17:10,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:17:10,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 21:17:10,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:10,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 21:17:10,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-21 21:17:10,326 INFO L87 Difference]: Start difference. First operand 495 states and 694 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:10,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:10,353 INFO L93 Difference]: Finished difference Result 797 states and 1147 transitions. [2024-11-21 21:17:10,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 21:17:10,354 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 151 [2024-11-21 21:17:10,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:10,356 INFO L225 Difference]: With dead ends: 797 [2024-11-21 21:17:10,356 INFO L226 Difference]: Without dead ends: 507 [2024-11-21 21:17:10,357 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-21 21:17:10,358 INFO L432 NwaCegarLoop]: 355 mSDtfsCounter, 1 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 21:17:10,358 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1055 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 21:17:10,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2024-11-21 21:17:10,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 503. [2024-11-21 21:17:10,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 469 states have (on average 1.3859275053304905) internal successors, (650), 473 states have internal predecessors, (650), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-21 21:17:10,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 702 transitions. [2024-11-21 21:17:10,371 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 702 transitions. Word has length 151 [2024-11-21 21:17:10,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:10,371 INFO L471 AbstractCegarLoop]: Abstraction has 503 states and 702 transitions. [2024-11-21 21:17:10,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:10,371 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 702 transitions. [2024-11-21 21:17:10,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-21 21:17:10,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:10,373 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:17:10,385 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-21 21:17:10,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:10,574 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:10,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:10,575 INFO L85 PathProgramCache]: Analyzing trace with hash 899349940, now seen corresponding path program 1 times [2024-11-21 21:17:10,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:10,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046230491] [2024-11-21 21:17:10,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:10,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:10,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:10,797 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-21 21:17:10,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:10,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046230491] [2024-11-21 21:17:10,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046230491] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:17:10,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188593887] [2024-11-21 21:17:10,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:10,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:10,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:17:10,801 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 21:17:10,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-21 21:17:11,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:11,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 21:17:11,372 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:17:11,388 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-21 21:17:11,388 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:17:11,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188593887] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:17:11,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:17:11,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-21 21:17:11,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009108257] [2024-11-21 21:17:11,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:17:11,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 21:17:11,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:11,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 21:17:11,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-21 21:17:11,390 INFO L87 Difference]: Start difference. First operand 503 states and 702 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:11,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:11,414 INFO L93 Difference]: Finished difference Result 813 states and 1167 transitions. [2024-11-21 21:17:11,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 21:17:11,414 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 151 [2024-11-21 21:17:11,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:11,417 INFO L225 Difference]: With dead ends: 813 [2024-11-21 21:17:11,417 INFO L226 Difference]: Without dead ends: 515 [2024-11-21 21:17:11,417 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-21 21:17:11,418 INFO L432 NwaCegarLoop]: 355 mSDtfsCounter, 1 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 21:17:11,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1057 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 21:17:11,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2024-11-21 21:17:11,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 515. [2024-11-21 21:17:11,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 481 states have (on average 1.3762993762993763) internal successors, (662), 485 states have internal predecessors, (662), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-21 21:17:11,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 714 transitions. [2024-11-21 21:17:11,429 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 714 transitions. Word has length 151 [2024-11-21 21:17:11,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:11,429 INFO L471 AbstractCegarLoop]: Abstraction has 515 states and 714 transitions. [2024-11-21 21:17:11,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:11,430 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 714 transitions. [2024-11-21 21:17:11,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-21 21:17:11,431 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:11,431 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:17:11,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-21 21:17:11,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-21 21:17:11,633 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:11,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:11,633 INFO L85 PathProgramCache]: Analyzing trace with hash -527405776, now seen corresponding path program 1 times [2024-11-21 21:17:11,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:11,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178690676] [2024-11-21 21:17:11,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:11,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:11,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:11,878 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-21 21:17:11,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:11,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178690676] [2024-11-21 21:17:11,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178690676] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:17:11,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650797818] [2024-11-21 21:17:11,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:11,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:11,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:17:11,882 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 21:17:11,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-21 21:17:12,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:12,454 INFO L255 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 21:17:12,457 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:17:12,536 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-21 21:17:12,536 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:17:12,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650797818] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:17:12,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:17:12,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-21 21:17:12,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077323748] [2024-11-21 21:17:12,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:17:12,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:17:12,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:12,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:17:12,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:17:12,537 INFO L87 Difference]: Start difference. First operand 515 states and 714 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:12,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:12,553 INFO L93 Difference]: Finished difference Result 825 states and 1171 transitions. [2024-11-21 21:17:12,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:17:12,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 151 [2024-11-21 21:17:12,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:12,557 INFO L225 Difference]: With dead ends: 825 [2024-11-21 21:17:12,557 INFO L226 Difference]: Without dead ends: 815 [2024-11-21 21:17:12,558 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:17:12,558 INFO L432 NwaCegarLoop]: 357 mSDtfsCounter, 54 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 21:17:12,558 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 711 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 21:17:12,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2024-11-21 21:17:12,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 815. [2024-11-21 21:17:12,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 781 states have (on average 1.416133162612036) internal successors, (1106), 785 states have internal predecessors, (1106), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-21 21:17:12,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1158 transitions. [2024-11-21 21:17:12,573 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1158 transitions. Word has length 151 [2024-11-21 21:17:12,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:12,573 INFO L471 AbstractCegarLoop]: Abstraction has 815 states and 1158 transitions. [2024-11-21 21:17:12,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:12,574 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1158 transitions. [2024-11-21 21:17:12,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-21 21:17:12,576 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:12,576 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:17:12,587 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-21 21:17:12,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-21 21:17:12,777 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:12,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:12,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1251872156, now seen corresponding path program 1 times [2024-11-21 21:17:12,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:12,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863449083] [2024-11-21 21:17:12,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:12,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:12,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:13,019 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-21 21:17:13,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:13,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863449083] [2024-11-21 21:17:13,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863449083] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:17:13,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175832798] [2024-11-21 21:17:13,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:13,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:13,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:17:13,023 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 21:17:13,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-21 21:17:13,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:13,609 INFO L255 TraceCheckSpWp]: Trace formula consists of 895 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 21:17:13,611 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:17:13,705 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-21 21:17:13,705 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:17:13,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175832798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:17:13,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:17:13,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-21 21:17:13,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031103117] [2024-11-21 21:17:13,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:17:13,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:17:13,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:13,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:17:13,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:17:13,707 INFO L87 Difference]: Start difference. First operand 815 states and 1158 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:13,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:13,723 INFO L93 Difference]: Finished difference Result 1425 states and 2059 transitions. [2024-11-21 21:17:13,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:17:13,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 161 [2024-11-21 21:17:13,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:13,728 INFO L225 Difference]: With dead ends: 1425 [2024-11-21 21:17:13,729 INFO L226 Difference]: Without dead ends: 1415 [2024-11-21 21:17:13,729 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:17:13,730 INFO L432 NwaCegarLoop]: 356 mSDtfsCounter, 53 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 21:17:13,730 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 709 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 21:17:13,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1415 states. [2024-11-21 21:17:13,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1415 to 1415. [2024-11-21 21:17:13,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1415 states, 1381 states have (on average 1.443881245474294) internal successors, (1994), 1385 states have internal predecessors, (1994), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-21 21:17:13,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 2046 transitions. [2024-11-21 21:17:13,753 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 2046 transitions. Word has length 161 [2024-11-21 21:17:13,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:13,753 INFO L471 AbstractCegarLoop]: Abstraction has 1415 states and 2046 transitions. [2024-11-21 21:17:13,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:13,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 2046 transitions. [2024-11-21 21:17:13,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-21 21:17:13,757 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:13,757 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:17:13,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-21 21:17:13,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-21 21:17:13,958 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:13,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:13,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1779724118, now seen corresponding path program 1 times [2024-11-21 21:17:13,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:13,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645637272] [2024-11-21 21:17:13,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:13,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:14,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:14,227 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-11-21 21:17:14,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:14,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645637272] [2024-11-21 21:17:14,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645637272] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:17:14,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060995787] [2024-11-21 21:17:14,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:14,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:14,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:17:14,230 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 21:17:14,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-21 21:17:14,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:14,857 INFO L255 TraceCheckSpWp]: Trace formula consists of 992 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 21:17:14,859 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:17:14,876 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-21 21:17:14,876 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:17:14,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060995787] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:17:14,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:17:14,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-21 21:17:14,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994175271] [2024-11-21 21:17:14,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:17:14,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 21:17:14,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:14,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 21:17:14,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-21 21:17:14,878 INFO L87 Difference]: Start difference. First operand 1415 states and 2046 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:14,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:14,906 INFO L93 Difference]: Finished difference Result 2673 states and 3915 transitions. [2024-11-21 21:17:14,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 21:17:14,906 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 205 [2024-11-21 21:17:14,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:14,911 INFO L225 Difference]: With dead ends: 2673 [2024-11-21 21:17:14,911 INFO L226 Difference]: Without dead ends: 1463 [2024-11-21 21:17:14,912 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-21 21:17:14,913 INFO L432 NwaCegarLoop]: 355 mSDtfsCounter, 1 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 21:17:14,913 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1057 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 21:17:14,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2024-11-21 21:17:14,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1463. [2024-11-21 21:17:14,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1463 states, 1429 states have (on average 1.4289713086074178) internal successors, (2042), 1433 states have internal predecessors, (2042), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-21 21:17:14,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1463 states to 1463 states and 2094 transitions. [2024-11-21 21:17:14,937 INFO L78 Accepts]: Start accepts. Automaton has 1463 states and 2094 transitions. Word has length 205 [2024-11-21 21:17:14,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:14,937 INFO L471 AbstractCegarLoop]: Abstraction has 1463 states and 2094 transitions. [2024-11-21 21:17:14,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:14,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1463 states and 2094 transitions. [2024-11-21 21:17:14,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-21 21:17:14,941 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:14,941 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:17:14,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-21 21:17:15,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:15,142 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:15,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:15,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1335823444, now seen corresponding path program 1 times [2024-11-21 21:17:15,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:15,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465821521] [2024-11-21 21:17:15,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:15,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:15,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:15,453 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-11-21 21:17:15,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:15,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465821521] [2024-11-21 21:17:15,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465821521] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:17:15,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211750568] [2024-11-21 21:17:15,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:15,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:15,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:17:15,457 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 21:17:15,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-21 21:17:16,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:16,131 INFO L255 TraceCheckSpWp]: Trace formula consists of 995 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 21:17:16,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:17:16,334 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2024-11-21 21:17:16,334 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:17:16,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211750568] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:17:16,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:17:16,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-21 21:17:16,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514063132] [2024-11-21 21:17:16,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:17:16,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:17:16,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:16,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:17:16,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:17:16,336 INFO L87 Difference]: Start difference. First operand 1463 states and 2094 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:16,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:16,358 INFO L93 Difference]: Finished difference Result 2721 states and 3931 transitions. [2024-11-21 21:17:16,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:17:16,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 205 [2024-11-21 21:17:16,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:16,368 INFO L225 Difference]: With dead ends: 2721 [2024-11-21 21:17:16,369 INFO L226 Difference]: Without dead ends: 2711 [2024-11-21 21:17:16,370 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:17:16,371 INFO L432 NwaCegarLoop]: 356 mSDtfsCounter, 43 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 21:17:16,371 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 710 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 21:17:16,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2711 states. [2024-11-21 21:17:16,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2711 to 2711. [2024-11-21 21:17:16,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2711 states, 2677 states have (on average 1.4441539036234592) internal successors, (3866), 2681 states have internal predecessors, (3866), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-21 21:17:16,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 3918 transitions. [2024-11-21 21:17:16,422 INFO L78 Accepts]: Start accepts. Automaton has 2711 states and 3918 transitions. Word has length 205 [2024-11-21 21:17:16,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:16,425 INFO L471 AbstractCegarLoop]: Abstraction has 2711 states and 3918 transitions. [2024-11-21 21:17:16,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:16,425 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 3918 transitions. [2024-11-21 21:17:16,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-11-21 21:17:16,431 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:16,431 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:17:16,443 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-21 21:17:16,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:16,632 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:16,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:16,632 INFO L85 PathProgramCache]: Analyzing trace with hash 850952836, now seen corresponding path program 1 times [2024-11-21 21:17:16,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:16,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896672316] [2024-11-21 21:17:16,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:16,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:16,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:16,893 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2024-11-21 21:17:16,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:16,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896672316] [2024-11-21 21:17:16,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896672316] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:17:16,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318953013] [2024-11-21 21:17:16,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:16,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:16,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:17:16,897 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 21:17:16,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-21 21:17:17,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:17,715 INFO L255 TraceCheckSpWp]: Trace formula consists of 1066 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 21:17:17,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:17:17,864 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-21 21:17:17,864 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:17:17,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318953013] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:17:17,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:17:17,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-21 21:17:17,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393057593] [2024-11-21 21:17:17,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:17:17,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:17:17,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:17,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:17:17,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:17:17,866 INFO L87 Difference]: Start difference. First operand 2711 states and 3918 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:17,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:17,891 INFO L93 Difference]: Finished difference Result 5217 states and 7579 transitions. [2024-11-21 21:17:17,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:17:17,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 229 [2024-11-21 21:17:17,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:17,904 INFO L225 Difference]: With dead ends: 5217 [2024-11-21 21:17:17,905 INFO L226 Difference]: Without dead ends: 5207 [2024-11-21 21:17:17,906 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:17:17,906 INFO L432 NwaCegarLoop]: 356 mSDtfsCounter, 38 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 21:17:17,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 709 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 21:17:17,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5207 states. [2024-11-21 21:17:17,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5207 to 5207. [2024-11-21 21:17:17,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5207 states, 5173 states have (on average 1.4525420452348734) internal successors, (7514), 5177 states have internal predecessors, (7514), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-21 21:17:17,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5207 states to 5207 states and 7566 transitions. [2024-11-21 21:17:17,982 INFO L78 Accepts]: Start accepts. Automaton has 5207 states and 7566 transitions. Word has length 229 [2024-11-21 21:17:17,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:17,983 INFO L471 AbstractCegarLoop]: Abstraction has 5207 states and 7566 transitions. [2024-11-21 21:17:17,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:17,983 INFO L276 IsEmpty]: Start isEmpty. Operand 5207 states and 7566 transitions. [2024-11-21 21:17:17,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2024-11-21 21:17:17,995 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:17,995 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:17:18,007 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-21 21:17:18,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-21 21:17:18,196 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:18,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:18,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1195580372, now seen corresponding path program 1 times [2024-11-21 21:17:18,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:18,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699496493] [2024-11-21 21:17:18,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:18,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:18,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:18,491 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2024-11-21 21:17:18,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:18,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699496493] [2024-11-21 21:17:18,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699496493] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:17:18,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192070119] [2024-11-21 21:17:18,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:18,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:18,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:17:18,494 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 21:17:18,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-21 21:17:19,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:19,245 INFO L255 TraceCheckSpWp]: Trace formula consists of 1143 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 21:17:19,249 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:17:19,415 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2024-11-21 21:17:19,415 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:17:19,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192070119] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:17:19,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:17:19,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-21 21:17:19,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489194297] [2024-11-21 21:17:19,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:17:19,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:17:19,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:19,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:17:19,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:17:19,417 INFO L87 Difference]: Start difference. First operand 5207 states and 7566 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:19,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:19,464 INFO L93 Difference]: Finished difference Result 10209 states and 14875 transitions. [2024-11-21 21:17:19,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:17:19,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 259 [2024-11-21 21:17:19,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:19,502 INFO L225 Difference]: With dead ends: 10209 [2024-11-21 21:17:19,502 INFO L226 Difference]: Without dead ends: 10199 [2024-11-21 21:17:19,508 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:17:19,509 INFO L432 NwaCegarLoop]: 356 mSDtfsCounter, 34 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 21:17:19,509 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 710 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 21:17:19,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10199 states. [2024-11-21 21:17:19,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10199 to 10199. [2024-11-21 21:17:19,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10199 states, 10165 states have (on average 1.456960157402853) internal successors, (14810), 10169 states have internal predecessors, (14810), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-21 21:17:19,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10199 states to 10199 states and 14862 transitions. [2024-11-21 21:17:19,672 INFO L78 Accepts]: Start accepts. Automaton has 10199 states and 14862 transitions. Word has length 259 [2024-11-21 21:17:19,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:19,672 INFO L471 AbstractCegarLoop]: Abstraction has 10199 states and 14862 transitions. [2024-11-21 21:17:19,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:19,673 INFO L276 IsEmpty]: Start isEmpty. Operand 10199 states and 14862 transitions. [2024-11-21 21:17:19,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2024-11-21 21:17:19,689 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:19,689 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:17:19,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-21 21:17:19,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-21 21:17:19,891 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:19,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:19,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1898362062, now seen corresponding path program 1 times [2024-11-21 21:17:19,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:19,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341191754] [2024-11-21 21:17:19,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:19,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:20,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:20,190 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2024-11-21 21:17:20,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:20,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341191754] [2024-11-21 21:17:20,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341191754] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:17:20,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331528286] [2024-11-21 21:17:20,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:20,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:20,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:17:20,193 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 21:17:20,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-21 21:17:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:21,019 INFO L255 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 21:17:21,024 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:17:21,043 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 241 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2024-11-21 21:17:21,044 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:17:21,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331528286] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:17:21,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:17:21,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-21 21:17:21,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632002621] [2024-11-21 21:17:21,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:17:21,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 21:17:21,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:21,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 21:17:21,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-21 21:17:21,046 INFO L87 Difference]: Start difference. First operand 10199 states and 14862 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:21,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:21,119 INFO L93 Difference]: Finished difference Result 20577 states and 30107 transitions. [2024-11-21 21:17:21,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 21:17:21,120 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 311 [2024-11-21 21:17:21,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:21,138 INFO L225 Difference]: With dead ends: 20577 [2024-11-21 21:17:21,138 INFO L226 Difference]: Without dead ends: 10583 [2024-11-21 21:17:21,151 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-21 21:17:21,152 INFO L432 NwaCegarLoop]: 355 mSDtfsCounter, 1 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 21:17:21,153 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1057 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 21:17:21,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10583 states. [2024-11-21 21:17:21,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10583 to 10583. [2024-11-21 21:17:21,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10583 states, 10549 states have (on average 1.4403260972604037) internal successors, (15194), 10553 states have internal predecessors, (15194), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-21 21:17:21,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10583 states to 10583 states and 15246 transitions. [2024-11-21 21:17:21,305 INFO L78 Accepts]: Start accepts. Automaton has 10583 states and 15246 transitions. Word has length 311 [2024-11-21 21:17:21,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:21,305 INFO L471 AbstractCegarLoop]: Abstraction has 10583 states and 15246 transitions. [2024-11-21 21:17:21,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:21,306 INFO L276 IsEmpty]: Start isEmpty. Operand 10583 states and 15246 transitions. [2024-11-21 21:17:21,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2024-11-21 21:17:21,324 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:21,324 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:17:21,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-21 21:17:21,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:21,526 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:21,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:21,526 INFO L85 PathProgramCache]: Analyzing trace with hash 451781196, now seen corresponding path program 1 times [2024-11-21 21:17:21,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:21,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854262594] [2024-11-21 21:17:21,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:21,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:21,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:21,818 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2024-11-21 21:17:21,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:21,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854262594] [2024-11-21 21:17:21,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854262594] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:17:21,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43975153] [2024-11-21 21:17:21,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:21,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:21,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:17:21,822 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 21:17:21,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-21 21:17:22,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:22,716 INFO L255 TraceCheckSpWp]: Trace formula consists of 1260 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 21:17:22,721 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:17:22,969 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2024-11-21 21:17:22,969 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:17:22,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43975153] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:17:22,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:17:22,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-21 21:17:22,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811601705] [2024-11-21 21:17:22,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:17:22,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:17:22,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:22,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:17:22,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:17:22,972 INFO L87 Difference]: Start difference. First operand 10583 states and 15246 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:23,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:23,087 INFO L93 Difference]: Finished difference Result 20961 states and 30235 transitions. [2024-11-21 21:17:23,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:17:23,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 311 [2024-11-21 21:17:23,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:23,125 INFO L225 Difference]: With dead ends: 20961 [2024-11-21 21:17:23,125 INFO L226 Difference]: Without dead ends: 20951 [2024-11-21 21:17:23,136 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:17:23,137 INFO L432 NwaCegarLoop]: 356 mSDtfsCounter, 23 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 21:17:23,137 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 709 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 21:17:23,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20951 states. [2024-11-21 21:17:23,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20951 to 20951. [2024-11-21 21:17:23,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20951 states, 20917 states have (on average 1.4423674523115169) internal successors, (30170), 20921 states have internal predecessors, (30170), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-21 21:17:23,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20951 states to 20951 states and 30222 transitions. [2024-11-21 21:17:23,430 INFO L78 Accepts]: Start accepts. Automaton has 20951 states and 30222 transitions. Word has length 311 [2024-11-21 21:17:23,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:23,431 INFO L471 AbstractCegarLoop]: Abstraction has 20951 states and 30222 transitions. [2024-11-21 21:17:23,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:23,431 INFO L276 IsEmpty]: Start isEmpty. Operand 20951 states and 30222 transitions. [2024-11-21 21:17:23,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2024-11-21 21:17:23,465 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:23,466 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:17:23,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-21 21:17:23,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:23,667 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:23,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:23,667 INFO L85 PathProgramCache]: Analyzing trace with hash 672270370, now seen corresponding path program 1 times [2024-11-21 21:17:23,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:23,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769123392] [2024-11-21 21:17:23,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:23,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:23,973 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 733 trivial. 0 not checked. [2024-11-21 21:17:23,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:23,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769123392] [2024-11-21 21:17:23,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769123392] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:17:23,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739220650] [2024-11-21 21:17:23,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:23,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:23,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:17:23,976 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 21:17:23,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-21 21:17:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:24,852 INFO L255 TraceCheckSpWp]: Trace formula consists of 1386 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-21 21:17:24,855 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:17:24,867 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 318 proven. 0 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked. [2024-11-21 21:17:24,867 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:17:24,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739220650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:17:24,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:17:24,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-21 21:17:24,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408956706] [2024-11-21 21:17:24,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:17:24,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:17:24,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:24,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:17:24,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:17:24,869 INFO L87 Difference]: Start difference. First operand 20951 states and 30222 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:24,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:24,965 INFO L93 Difference]: Finished difference Result 31585 states and 45723 transitions. [2024-11-21 21:17:24,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:17:24,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 369 [2024-11-21 21:17:24,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:24,995 INFO L225 Difference]: With dead ends: 31585 [2024-11-21 21:17:24,995 INFO L226 Difference]: Without dead ends: 21207 [2024-11-21 21:17:25,016 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:17:25,021 INFO L432 NwaCegarLoop]: 357 mSDtfsCounter, 0 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 21:17:25,021 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 709 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 21:17:25,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21207 states. [2024-11-21 21:17:25,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21207 to 21207. [2024-11-21 21:17:25,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21207 states, 21173 states have (on average 1.4370188447551127) internal successors, (30426), 21177 states have internal predecessors, (30426), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-21 21:17:25,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21207 states to 21207 states and 30478 transitions. [2024-11-21 21:17:25,287 INFO L78 Accepts]: Start accepts. Automaton has 21207 states and 30478 transitions. Word has length 369 [2024-11-21 21:17:25,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:25,287 INFO L471 AbstractCegarLoop]: Abstraction has 21207 states and 30478 transitions. [2024-11-21 21:17:25,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:25,288 INFO L276 IsEmpty]: Start isEmpty. Operand 21207 states and 30478 transitions. [2024-11-21 21:17:25,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2024-11-21 21:17:25,314 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:25,315 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:17:25,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-21 21:17:25,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-21 21:17:25,516 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:25,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:25,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1654892000, now seen corresponding path program 1 times [2024-11-21 21:17:25,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:25,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676048718] [2024-11-21 21:17:25,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:25,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:25,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:25,820 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 733 trivial. 0 not checked. [2024-11-21 21:17:25,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:25,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676048718] [2024-11-21 21:17:25,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676048718] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:17:25,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491793768] [2024-11-21 21:17:25,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:25,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:25,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:17:25,823 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 21:17:25,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-21 21:17:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:26,761 INFO L255 TraceCheckSpWp]: Trace formula consists of 1389 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 21:17:26,764 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:17:26,783 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 733 trivial. 0 not checked. [2024-11-21 21:17:26,783 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 21:17:26,839 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 733 trivial. 0 not checked. [2024-11-21 21:17:26,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491793768] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 21:17:26,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 21:17:26,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-21 21:17:26,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348691139] [2024-11-21 21:17:26,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 21:17:26,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-21 21:17:26,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:26,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-21 21:17:26,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-21 21:17:26,842 INFO L87 Difference]: Start difference. First operand 21207 states and 30478 transitions. Second operand has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 1 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-21 21:17:26,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:26,981 INFO L93 Difference]: Finished difference Result 42415 states and 60959 transitions. [2024-11-21 21:17:26,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-21 21:17:26,982 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 1 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 369 [2024-11-21 21:17:26,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:27,012 INFO L225 Difference]: With dead ends: 42415 [2024-11-21 21:17:27,012 INFO L226 Difference]: Without dead ends: 21213 [2024-11-21 21:17:27,042 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 740 GetRequests, 735 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-21 21:17:27,043 INFO L432 NwaCegarLoop]: 356 mSDtfsCounter, 2 mSDsluCounter, 1056 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1412 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 21:17:27,043 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1412 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 21:17:27,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21213 states. [2024-11-21 21:17:27,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21213 to 21213. [2024-11-21 21:17:27,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21213 states, 21179 states have (on average 1.436895037537183) internal successors, (30432), 21183 states have internal predecessors, (30432), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-21 21:17:27,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21213 states to 21213 states and 30484 transitions. [2024-11-21 21:17:27,296 INFO L78 Accepts]: Start accepts. Automaton has 21213 states and 30484 transitions. Word has length 369 [2024-11-21 21:17:27,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:27,296 INFO L471 AbstractCegarLoop]: Abstraction has 21213 states and 30484 transitions. [2024-11-21 21:17:27,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 1 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-21 21:17:27,296 INFO L276 IsEmpty]: Start isEmpty. Operand 21213 states and 30484 transitions. [2024-11-21 21:17:27,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2024-11-21 21:17:27,320 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:27,320 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:17:27,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-21 21:17:27,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-21 21:17:27,521 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:27,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:27,522 INFO L85 PathProgramCache]: Analyzing trace with hash 226629946, now seen corresponding path program 2 times [2024-11-21 21:17:27,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:27,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845413002] [2024-11-21 21:17:27,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 21:17:27,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:27,752 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 21:17:27,752 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:17:27,970 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 724 trivial. 0 not checked. [2024-11-21 21:17:27,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:27,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845413002] [2024-11-21 21:17:27,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845413002] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:17:27,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135675595] [2024-11-21 21:17:27,971 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 21:17:27,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:27,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:17:27,974 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 21:17:27,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-21 21:17:30,281 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 21:17:30,281 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:17:30,287 INFO L255 TraceCheckSpWp]: Trace formula consists of 1434 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-21 21:17:30,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:17:30,329 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 733 trivial. 0 not checked. [2024-11-21 21:17:30,330 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 21:17:30,407 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 733 trivial. 0 not checked. [2024-11-21 21:17:30,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135675595] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 21:17:30,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 21:17:30,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-21 21:17:30,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492963339] [2024-11-21 21:17:30,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 21:17:30,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-21 21:17:30,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:30,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-21 21:17:30,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-21 21:17:30,410 INFO L87 Difference]: Start difference. First operand 21213 states and 30484 transitions. Second operand has 14 states, 14 states have (on average 12.714285714285714) internal successors, (178), 14 states have internal predecessors, (178), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-21 21:17:30,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:30,572 INFO L93 Difference]: Finished difference Result 42429 states and 60981 transitions. [2024-11-21 21:17:30,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-21 21:17:30,573 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 12.714285714285714) internal successors, (178), 14 states have internal predecessors, (178), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 375 [2024-11-21 21:17:30,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:30,604 INFO L225 Difference]: With dead ends: 42429 [2024-11-21 21:17:30,605 INFO L226 Difference]: Without dead ends: 21227 [2024-11-21 21:17:30,632 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 752 GetRequests, 740 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-21 21:17:30,633 INFO L432 NwaCegarLoop]: 354 mSDtfsCounter, 3 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1405 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 21:17:30,633 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1405 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 21:17:30,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21227 states. [2024-11-21 21:17:30,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21227 to 21227. [2024-11-21 21:17:30,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21227 states, 21193 states have (on average 1.4366064266503091) internal successors, (30446), 21197 states have internal predecessors, (30446), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-21 21:17:30,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21227 states to 21227 states and 30498 transitions. [2024-11-21 21:17:30,881 INFO L78 Accepts]: Start accepts. Automaton has 21227 states and 30498 transitions. Word has length 375 [2024-11-21 21:17:30,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:30,881 INFO L471 AbstractCegarLoop]: Abstraction has 21227 states and 30498 transitions. [2024-11-21 21:17:30,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.714285714285714) internal successors, (178), 14 states have internal predecessors, (178), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-21 21:17:30,882 INFO L276 IsEmpty]: Start isEmpty. Operand 21227 states and 30498 transitions. [2024-11-21 21:17:30,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2024-11-21 21:17:30,905 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:30,906 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:17:30,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-21 21:17:31,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-21 21:17:31,107 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:31,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:31,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1355133066, now seen corresponding path program 3 times [2024-11-21 21:17:31,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:31,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650456302] [2024-11-21 21:17:31,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 21:17:31,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:31,305 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-21 21:17:31,306 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:17:31,565 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 802 trivial. 0 not checked. [2024-11-21 21:17:31,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:31,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650456302] [2024-11-21 21:17:31,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650456302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:17:31,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 21:17:31,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-21 21:17:31,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582543194] [2024-11-21 21:17:31,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:17:31,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-21 21:17:31,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:31,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-21 21:17:31,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:17:31,568 INFO L87 Difference]: Start difference. First operand 21227 states and 30498 transitions. Second operand has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:31,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:31,979 INFO L93 Difference]: Finished difference Result 58869 states and 84015 transitions. [2024-11-21 21:17:31,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-21 21:17:31,980 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 395 [2024-11-21 21:17:31,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:32,035 INFO L225 Difference]: With dead ends: 58869 [2024-11-21 21:17:32,036 INFO L226 Difference]: Without dead ends: 37867 [2024-11-21 21:17:32,067 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-21 21:17:32,068 INFO L432 NwaCegarLoop]: 323 mSDtfsCounter, 70 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-21 21:17:32,068 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 1241 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-21 21:17:32,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37867 states. [2024-11-21 21:17:32,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37867 to 22763. [2024-11-21 21:17:32,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22763 states, 22729 states have (on average 1.4408904923225836) internal successors, (32750), 22733 states have internal predecessors, (32750), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-21 21:17:32,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22763 states to 22763 states and 32802 transitions. [2024-11-21 21:17:32,531 INFO L78 Accepts]: Start accepts. Automaton has 22763 states and 32802 transitions. Word has length 395 [2024-11-21 21:17:32,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:32,532 INFO L471 AbstractCegarLoop]: Abstraction has 22763 states and 32802 transitions. [2024-11-21 21:17:32,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:32,533 INFO L276 IsEmpty]: Start isEmpty. Operand 22763 states and 32802 transitions. [2024-11-21 21:17:32,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2024-11-21 21:17:32,566 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:32,567 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:17:32,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-21 21:17:32,567 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:32,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:32,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1214584456, now seen corresponding path program 1 times [2024-11-21 21:17:32,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:32,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654003451] [2024-11-21 21:17:32,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:32,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:32,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:33,085 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 892 trivial. 0 not checked. [2024-11-21 21:17:33,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:33,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654003451] [2024-11-21 21:17:33,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654003451] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:17:33,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951521848] [2024-11-21 21:17:33,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:33,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:33,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:17:33,088 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 21:17:33,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-21 21:17:34,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:34,008 INFO L255 TraceCheckSpWp]: Trace formula consists of 1581 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 21:17:34,012 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:17:34,032 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 808 trivial. 0 not checked. [2024-11-21 21:17:34,032 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:17:34,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951521848] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:17:34,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:17:34,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-21 21:17:34,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512263396] [2024-11-21 21:17:34,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:17:34,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 21:17:34,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:34,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 21:17:34,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-21 21:17:34,035 INFO L87 Difference]: Start difference. First operand 22763 states and 32802 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:34,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:34,141 INFO L93 Difference]: Finished difference Result 45557 states and 65583 transitions. [2024-11-21 21:17:34,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 21:17:34,141 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 395 [2024-11-21 21:17:34,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:34,173 INFO L225 Difference]: With dead ends: 45557 [2024-11-21 21:17:34,174 INFO L226 Difference]: Without dead ends: 23019 [2024-11-21 21:17:34,198 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-21 21:17:34,199 INFO L432 NwaCegarLoop]: 358 mSDtfsCounter, 0 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1060 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 21:17:34,199 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1060 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 21:17:34,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23019 states. [2024-11-21 21:17:34,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23019 to 22763. [2024-11-21 21:17:34,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22763 states, 22729 states have (on average 1.4296273483215276) internal successors, (32494), 22733 states have internal predecessors, (32494), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-21 21:17:34,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22763 states to 22763 states and 32546 transitions. [2024-11-21 21:17:34,572 INFO L78 Accepts]: Start accepts. Automaton has 22763 states and 32546 transitions. Word has length 395 [2024-11-21 21:17:34,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:34,573 INFO L471 AbstractCegarLoop]: Abstraction has 22763 states and 32546 transitions. [2024-11-21 21:17:34,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:34,573 INFO L276 IsEmpty]: Start isEmpty. Operand 22763 states and 32546 transitions. [2024-11-21 21:17:34,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2024-11-21 21:17:34,598 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:34,599 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:17:34,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-21 21:17:34,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-21 21:17:34,800 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:34,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:34,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1274944506, now seen corresponding path program 1 times [2024-11-21 21:17:34,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:34,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846007620] [2024-11-21 21:17:34,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:34,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:35,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:35,215 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 892 trivial. 0 not checked. [2024-11-21 21:17:35,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:35,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846007620] [2024-11-21 21:17:35,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846007620] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:17:35,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463466245] [2024-11-21 21:17:35,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:35,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:35,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:17:35,219 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 21:17:35,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-21 21:17:36,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:36,166 INFO L255 TraceCheckSpWp]: Trace formula consists of 1578 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 21:17:36,170 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:17:36,189 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 820 trivial. 0 not checked. [2024-11-21 21:17:36,189 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:17:36,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463466245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:17:36,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:17:36,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-21 21:17:36,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34791486] [2024-11-21 21:17:36,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:17:36,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 21:17:36,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:36,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 21:17:36,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-21 21:17:36,192 INFO L87 Difference]: Start difference. First operand 22763 states and 32546 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:36,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:36,320 INFO L93 Difference]: Finished difference Result 46069 states and 66095 transitions. [2024-11-21 21:17:36,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 21:17:36,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 395 [2024-11-21 21:17:36,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:36,352 INFO L225 Difference]: With dead ends: 46069 [2024-11-21 21:17:36,352 INFO L226 Difference]: Without dead ends: 23531 [2024-11-21 21:17:36,377 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-21 21:17:36,377 INFO L432 NwaCegarLoop]: 358 mSDtfsCounter, 0 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 21:17:36,378 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1061 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 21:17:36,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23531 states. [2024-11-21 21:17:36,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23531 to 23531. [2024-11-21 21:17:36,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23531 states, 23497 states have (on average 1.3937949525471336) internal successors, (32750), 23501 states have internal predecessors, (32750), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-21 21:17:36,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23531 states to 23531 states and 32802 transitions. [2024-11-21 21:17:36,651 INFO L78 Accepts]: Start accepts. Automaton has 23531 states and 32802 transitions. Word has length 395 [2024-11-21 21:17:36,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:36,652 INFO L471 AbstractCegarLoop]: Abstraction has 23531 states and 32802 transitions. [2024-11-21 21:17:36,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:36,652 INFO L276 IsEmpty]: Start isEmpty. Operand 23531 states and 32802 transitions. [2024-11-21 21:17:36,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2024-11-21 21:17:36,756 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:36,756 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:17:36,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-21 21:17:36,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:36,957 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:36,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:36,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1697646332, now seen corresponding path program 1 times [2024-11-21 21:17:36,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:36,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676286949] [2024-11-21 21:17:36,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:36,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:37,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:37,343 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 892 trivial. 0 not checked. [2024-11-21 21:17:37,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:37,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676286949] [2024-11-21 21:17:37,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676286949] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:17:37,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068849469] [2024-11-21 21:17:37,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:37,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:37,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:17:37,346 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 21:17:37,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-21 21:17:38,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:38,324 INFO L255 TraceCheckSpWp]: Trace formula consists of 1575 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-21 21:17:38,328 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:17:38,434 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 793 trivial. 0 not checked. [2024-11-21 21:17:38,435 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 21:17:38,613 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 793 trivial. 0 not checked. [2024-11-21 21:17:38,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068849469] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 21:17:38,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 21:17:38,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 13, 13] total 18 [2024-11-21 21:17:38,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558846072] [2024-11-21 21:17:38,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 21:17:38,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-21 21:17:38,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:38,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-21 21:17:38,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=181, Unknown=0, NotChecked=0, Total=306 [2024-11-21 21:17:38,615 INFO L87 Difference]: Start difference. First operand 23531 states and 32802 transitions. Second operand has 18 states, 18 states have (on average 10.722222222222221) internal successors, (193), 18 states have internal predecessors, (193), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-21 21:17:38,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:38,854 INFO L93 Difference]: Finished difference Result 47060 states and 65610 transitions. [2024-11-21 21:17:38,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-21 21:17:38,855 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.722222222222221) internal successors, (193), 18 states have internal predecessors, (193), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 395 [2024-11-21 21:17:38,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:38,880 INFO L225 Difference]: With dead ends: 47060 [2024-11-21 21:17:38,880 INFO L226 Difference]: Without dead ends: 23552 [2024-11-21 21:17:38,900 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 792 GetRequests, 768 SyntacticMatches, 8 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=181, Unknown=0, NotChecked=0, Total=306 [2024-11-21 21:17:38,900 INFO L432 NwaCegarLoop]: 351 mSDtfsCounter, 15 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2435 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 21:17:38,901 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2435 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 21:17:38,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23552 states. [2024-11-21 21:17:39,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23552 to 23546. [2024-11-21 21:17:39,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23546 states, 23511 states have (on average 1.3936029943430734) internal successors, (32765), 23515 states have internal predecessors, (32765), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-21 21:17:39,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23546 states to 23546 states and 32819 transitions. [2024-11-21 21:17:39,168 INFO L78 Accepts]: Start accepts. Automaton has 23546 states and 32819 transitions. Word has length 395 [2024-11-21 21:17:39,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:39,169 INFO L471 AbstractCegarLoop]: Abstraction has 23546 states and 32819 transitions. [2024-11-21 21:17:39,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.722222222222221) internal successors, (193), 18 states have internal predecessors, (193), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-21 21:17:39,169 INFO L276 IsEmpty]: Start isEmpty. Operand 23546 states and 32819 transitions. [2024-11-21 21:17:39,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2024-11-21 21:17:39,193 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:39,194 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:17:39,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-21 21:17:39,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:39,395 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:39,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:39,396 INFO L85 PathProgramCache]: Analyzing trace with hash -133336574, now seen corresponding path program 2 times [2024-11-21 21:17:39,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:39,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785480224] [2024-11-21 21:17:39,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 21:17:39,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:39,681 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 21:17:39,682 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:17:39,876 INFO L134 CoverageAnalysis]: Checked inductivity of 993 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 992 trivial. 0 not checked. [2024-11-21 21:17:39,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:39,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785480224] [2024-11-21 21:17:39,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785480224] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:17:39,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788718732] [2024-11-21 21:17:39,877 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 21:17:39,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:39,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:17:39,880 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 21:17:39,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-21 21:17:42,089 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 21:17:42,090 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:17:42,097 INFO L255 TraceCheckSpWp]: Trace formula consists of 1639 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-21 21:17:42,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:17:42,128 INFO L134 CoverageAnalysis]: Checked inductivity of 993 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 985 trivial. 0 not checked. [2024-11-21 21:17:42,129 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 21:17:42,187 INFO L134 CoverageAnalysis]: Checked inductivity of 993 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 988 trivial. 0 not checked. [2024-11-21 21:17:42,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788718732] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 21:17:42,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 21:17:42,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 10 [2024-11-21 21:17:42,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955240638] [2024-11-21 21:17:42,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 21:17:42,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-21 21:17:42,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:42,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-21 21:17:42,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-21 21:17:42,189 INFO L87 Difference]: Start difference. First operand 23546 states and 32819 transitions. Second operand has 10 states, 10 states have (on average 17.0) internal successors, (170), 10 states have internal predecessors, (170), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-21 21:17:42,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:42,368 INFO L93 Difference]: Finished difference Result 47069 states and 65621 transitions. [2024-11-21 21:17:42,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-21 21:17:42,369 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.0) internal successors, (170), 10 states have internal predecessors, (170), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 406 [2024-11-21 21:17:42,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:42,390 INFO L225 Difference]: With dead ends: 47069 [2024-11-21 21:17:42,390 INFO L226 Difference]: Without dead ends: 23587 [2024-11-21 21:17:42,410 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 814 GetRequests, 806 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-21 21:17:42,411 INFO L432 NwaCegarLoop]: 348 mSDtfsCounter, 52 mSDsluCounter, 1379 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 1727 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 21:17:42,411 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 1727 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 21:17:42,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23587 states. [2024-11-21 21:17:42,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23587 to 23581. [2024-11-21 21:17:42,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23581 states, 23541 states have (on average 1.3933137929569688) internal successors, (32800), 23545 states have internal predecessors, (32800), 32 states have call successors, (32), 7 states have call predecessors, (32), 7 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-21 21:17:42,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23581 states to 23581 states and 32864 transitions. [2024-11-21 21:17:42,662 INFO L78 Accepts]: Start accepts. Automaton has 23581 states and 32864 transitions. Word has length 406 [2024-11-21 21:17:42,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:42,662 INFO L471 AbstractCegarLoop]: Abstraction has 23581 states and 32864 transitions. [2024-11-21 21:17:42,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.0) internal successors, (170), 10 states have internal predecessors, (170), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-21 21:17:42,662 INFO L276 IsEmpty]: Start isEmpty. Operand 23581 states and 32864 transitions. [2024-11-21 21:17:42,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2024-11-21 21:17:42,689 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:42,689 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:17:42,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-21 21:17:42,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-21 21:17:42,890 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:42,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:42,891 INFO L85 PathProgramCache]: Analyzing trace with hash -729813116, now seen corresponding path program 3 times [2024-11-21 21:17:42,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:42,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847858740] [2024-11-21 21:17:42,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 21:17:42,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:43,106 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-21 21:17:43,107 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:17:43,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2024-11-21 21:17:43,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:43,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847858740] [2024-11-21 21:17:43,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847858740] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:17:43,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 21:17:43,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-21 21:17:43,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745660577] [2024-11-21 21:17:43,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:17:43,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-21 21:17:43,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:43,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-21 21:17:43,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-21 21:17:43,621 INFO L87 Difference]: Start difference. First operand 23581 states and 32864 transitions. Second operand has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:44,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:44,114 INFO L93 Difference]: Finished difference Result 67879 states and 94317 transitions. [2024-11-21 21:17:44,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-21 21:17:44,115 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 421 [2024-11-21 21:17:44,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:44,181 INFO L225 Difference]: With dead ends: 67879 [2024-11-21 21:17:44,181 INFO L226 Difference]: Without dead ends: 44573 [2024-11-21 21:17:44,217 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-11-21 21:17:44,218 INFO L432 NwaCegarLoop]: 314 mSDtfsCounter, 219 mSDsluCounter, 1213 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-21 21:17:44,219 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 1527 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-21 21:17:44,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44573 states. [2024-11-21 21:17:44,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44573 to 26653. [2024-11-21 21:17:44,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26653 states, 26613 states have (on average 1.3960094690564762) internal successors, (37152), 26617 states have internal predecessors, (37152), 32 states have call successors, (32), 7 states have call predecessors, (32), 7 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-21 21:17:44,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26653 states to 26653 states and 37216 transitions. [2024-11-21 21:17:44,753 INFO L78 Accepts]: Start accepts. Automaton has 26653 states and 37216 transitions. Word has length 421 [2024-11-21 21:17:44,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:44,754 INFO L471 AbstractCegarLoop]: Abstraction has 26653 states and 37216 transitions. [2024-11-21 21:17:44,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:44,754 INFO L276 IsEmpty]: Start isEmpty. Operand 26653 states and 37216 transitions. [2024-11-21 21:17:44,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2024-11-21 21:17:44,798 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:44,798 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:17:44,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-21 21:17:44,799 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:44,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:44,799 INFO L85 PathProgramCache]: Analyzing trace with hash -28213242, now seen corresponding path program 1 times [2024-11-21 21:17:44,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:44,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561910329] [2024-11-21 21:17:44,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:44,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:45,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:45,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1042 trivial. 0 not checked. [2024-11-21 21:17:45,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:45,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561910329] [2024-11-21 21:17:45,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561910329] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:17:45,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89278472] [2024-11-21 21:17:45,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:45,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:45,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:17:45,251 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 21:17:45,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-21 21:17:46,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:46,444 INFO L255 TraceCheckSpWp]: Trace formula consists of 1656 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 21:17:46,448 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:17:46,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 917 trivial. 0 not checked. [2024-11-21 21:17:46,461 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:17:46,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89278472] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:17:46,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:17:46,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-21 21:17:46,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72698270] [2024-11-21 21:17:46,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:17:46,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 21:17:46,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:46,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 21:17:46,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-21 21:17:46,463 INFO L87 Difference]: Start difference. First operand 26653 states and 37216 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:46,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:46,573 INFO L93 Difference]: Finished difference Result 53287 states and 74349 transitions. [2024-11-21 21:17:46,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 21:17:46,573 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 421 [2024-11-21 21:17:46,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:46,600 INFO L225 Difference]: With dead ends: 53287 [2024-11-21 21:17:46,600 INFO L226 Difference]: Without dead ends: 26909 [2024-11-21 21:17:46,622 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-21 21:17:46,622 INFO L432 NwaCegarLoop]: 358 mSDtfsCounter, 0 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1060 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 21:17:46,622 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1060 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 21:17:46,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26909 states. [2024-11-21 21:17:46,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26909 to 26653. [2024-11-21 21:17:46,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26653 states, 26613 states have (on average 1.3863901100965694) internal successors, (36896), 26617 states have internal predecessors, (36896), 32 states have call successors, (32), 7 states have call predecessors, (32), 7 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-21 21:17:46,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26653 states to 26653 states and 36960 transitions. [2024-11-21 21:17:46,861 INFO L78 Accepts]: Start accepts. Automaton has 26653 states and 36960 transitions. Word has length 421 [2024-11-21 21:17:46,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:46,862 INFO L471 AbstractCegarLoop]: Abstraction has 26653 states and 36960 transitions. [2024-11-21 21:17:46,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:46,862 INFO L276 IsEmpty]: Start isEmpty. Operand 26653 states and 36960 transitions. [2024-11-21 21:17:46,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2024-11-21 21:17:46,953 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:46,953 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:17:46,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-21 21:17:47,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:47,154 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:47,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:47,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1357990152, now seen corresponding path program 1 times [2024-11-21 21:17:47,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:47,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731495888] [2024-11-21 21:17:47,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:47,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:47,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:47,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1042 trivial. 0 not checked. [2024-11-21 21:17:47,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:47,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731495888] [2024-11-21 21:17:47,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731495888] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:17:47,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858074294] [2024-11-21 21:17:47,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:47,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:47,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:17:47,513 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 21:17:47,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-21 21:17:48,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:48,590 INFO L255 TraceCheckSpWp]: Trace formula consists of 1653 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 21:17:48,594 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:17:48,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 931 trivial. 0 not checked. [2024-11-21 21:17:48,608 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:17:48,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858074294] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:17:48,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:17:48,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-21 21:17:48,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361153177] [2024-11-21 21:17:48,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:17:48,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 21:17:48,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:48,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 21:17:48,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-21 21:17:48,610 INFO L87 Difference]: Start difference. First operand 26653 states and 36960 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:48,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:48,713 INFO L93 Difference]: Finished difference Result 53799 states and 74861 transitions. [2024-11-21 21:17:48,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 21:17:48,713 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 421 [2024-11-21 21:17:48,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:48,745 INFO L225 Difference]: With dead ends: 53799 [2024-11-21 21:17:48,745 INFO L226 Difference]: Without dead ends: 27421 [2024-11-21 21:17:48,766 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-21 21:17:48,767 INFO L432 NwaCegarLoop]: 358 mSDtfsCounter, 0 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 21:17:48,767 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1061 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 21:17:48,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27421 states. [2024-11-21 21:17:48,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27421 to 27421. [2024-11-21 21:17:48,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27421 states, 27381 states have (on average 1.3568532924290566) internal successors, (37152), 27385 states have internal predecessors, (37152), 32 states have call successors, (32), 7 states have call predecessors, (32), 7 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-21 21:17:49,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27421 states to 27421 states and 37216 transitions. [2024-11-21 21:17:49,009 INFO L78 Accepts]: Start accepts. Automaton has 27421 states and 37216 transitions. Word has length 421 [2024-11-21 21:17:49,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:49,010 INFO L471 AbstractCegarLoop]: Abstraction has 27421 states and 37216 transitions. [2024-11-21 21:17:49,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-21 21:17:49,010 INFO L276 IsEmpty]: Start isEmpty. Operand 27421 states and 37216 transitions. [2024-11-21 21:17:49,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2024-11-21 21:17:49,042 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:49,043 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:17:49,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-21 21:17:49,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:49,243 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:49,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:49,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1013749110, now seen corresponding path program 1 times [2024-11-21 21:17:49,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:49,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455167054] [2024-11-21 21:17:49,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:49,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:49,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:49,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1042 trivial. 0 not checked. [2024-11-21 21:17:49,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:49,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455167054] [2024-11-21 21:17:49,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455167054] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:17:49,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359189399] [2024-11-21 21:17:49,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:17:49,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:49,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:17:49,629 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 21:17:49,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-21 21:17:50,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:17:50,868 INFO L255 TraceCheckSpWp]: Trace formula consists of 1650 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-21 21:17:50,872 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:17:50,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 3 proven. 51 refuted. 0 times theorem prover too weak. 989 trivial. 0 not checked. [2024-11-21 21:17:50,929 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 21:17:51,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 992 trivial. 0 not checked. [2024-11-21 21:17:51,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359189399] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 21:17:51,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 21:17:51,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9, 9] total 18 [2024-11-21 21:17:51,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615608110] [2024-11-21 21:17:51,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 21:17:51,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-21 21:17:51,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:51,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-21 21:17:51,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=181, Unknown=0, NotChecked=0, Total=306 [2024-11-21 21:17:51,053 INFO L87 Difference]: Start difference. First operand 27421 states and 37216 transitions. Second operand has 18 states, 18 states have (on average 11.222222222222221) internal successors, (202), 18 states have internal predecessors, (202), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-21 21:17:51,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:51,407 INFO L93 Difference]: Finished difference Result 54819 states and 74419 transitions. [2024-11-21 21:17:51,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-21 21:17:51,407 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 11.222222222222221) internal successors, (202), 18 states have internal predecessors, (202), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 421 [2024-11-21 21:17:51,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:51,442 INFO L225 Difference]: With dead ends: 54819 [2024-11-21 21:17:51,442 INFO L226 Difference]: Without dead ends: 27490 [2024-11-21 21:17:51,471 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 844 GetRequests, 828 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=125, Invalid=181, Unknown=0, NotChecked=0, Total=306 [2024-11-21 21:17:51,471 INFO L432 NwaCegarLoop]: 351 mSDtfsCounter, 123 mSDsluCounter, 1407 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 1758 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-21 21:17:51,472 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 1758 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-21 21:17:51,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27490 states. [2024-11-21 21:17:51,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27490 to 27484. [2024-11-21 21:17:51,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27484 states, 27435 states have (on average 1.3564789502460362) internal successors, (37215), 27439 states have internal predecessors, (37215), 41 states have call successors, (41), 7 states have call predecessors, (41), 7 states have return successors, (41), 38 states have call predecessors, (41), 41 states have call successors, (41) [2024-11-21 21:17:51,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27484 states to 27484 states and 37297 transitions. [2024-11-21 21:17:51,778 INFO L78 Accepts]: Start accepts. Automaton has 27484 states and 37297 transitions. Word has length 421 [2024-11-21 21:17:51,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:51,779 INFO L471 AbstractCegarLoop]: Abstraction has 27484 states and 37297 transitions. [2024-11-21 21:17:51,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 11.222222222222221) internal successors, (202), 18 states have internal predecessors, (202), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-21 21:17:51,779 INFO L276 IsEmpty]: Start isEmpty. Operand 27484 states and 37297 transitions. [2024-11-21 21:17:51,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2024-11-21 21:17:51,803 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:51,803 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:17:51,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-11-21 21:17:52,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-21 21:17:52,004 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:52,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:52,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1788942344, now seen corresponding path program 2 times [2024-11-21 21:17:52,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:52,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888652565] [2024-11-21 21:17:52,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 21:17:52,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:52,231 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 21:17:52,232 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:17:52,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1283 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1282 trivial. 0 not checked. [2024-11-21 21:17:52,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:52,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888652565] [2024-11-21 21:17:52,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888652565] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:17:52,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500446434] [2024-11-21 21:17:52,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 21:17:52,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:17:52,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:17:52,437 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 21:17:52,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-21 21:17:57,083 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 21:17:57,084 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:17:57,093 INFO L255 TraceCheckSpWp]: Trace formula consists of 1686 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-21 21:17:57,097 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:17:57,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1283 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1275 trivial. 0 not checked. [2024-11-21 21:17:57,120 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 21:17:57,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1283 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1278 trivial. 0 not checked. [2024-11-21 21:17:57,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500446434] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 21:17:57,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 21:17:57,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 10 [2024-11-21 21:17:57,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659661533] [2024-11-21 21:17:57,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 21:17:57,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-21 21:17:57,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:57,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-21 21:17:57,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-21 21:17:57,169 INFO L87 Difference]: Start difference. First operand 27484 states and 37297 transitions. Second operand has 10 states, 10 states have (on average 17.8) internal successors, (178), 10 states have internal predecessors, (178), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-21 21:17:57,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:17:57,389 INFO L93 Difference]: Finished difference Result 54845 states and 74448 transitions. [2024-11-21 21:17:57,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-21 21:17:57,389 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.8) internal successors, (178), 10 states have internal predecessors, (178), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 448 [2024-11-21 21:17:57,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:17:57,415 INFO L225 Difference]: With dead ends: 54845 [2024-11-21 21:17:57,416 INFO L226 Difference]: Without dead ends: 27525 [2024-11-21 21:17:57,436 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 898 GetRequests, 890 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-21 21:17:57,436 INFO L432 NwaCegarLoop]: 355 mSDtfsCounter, 54 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1403 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 21:17:57,436 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 1403 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 21:17:57,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27525 states. [2024-11-21 21:17:57,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27525 to 27519. [2024-11-21 21:17:57,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27519 states, 27465 states have (on average 1.356271618423448) internal successors, (37250), 27469 states have internal predecessors, (37250), 46 states have call successors, (46), 7 states have call predecessors, (46), 7 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-21 21:17:57,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27519 states to 27519 states and 37342 transitions. [2024-11-21 21:17:57,791 INFO L78 Accepts]: Start accepts. Automaton has 27519 states and 37342 transitions. Word has length 448 [2024-11-21 21:17:57,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:17:57,791 INFO L471 AbstractCegarLoop]: Abstraction has 27519 states and 37342 transitions. [2024-11-21 21:17:57,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.8) internal successors, (178), 10 states have internal predecessors, (178), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-21 21:17:57,791 INFO L276 IsEmpty]: Start isEmpty. Operand 27519 states and 37342 transitions. [2024-11-21 21:17:57,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2024-11-21 21:17:57,814 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:17:57,814 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:17:57,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-11-21 21:17:58,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-21 21:17:58,015 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:17:58,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:17:58,016 INFO L85 PathProgramCache]: Analyzing trace with hash 9248666, now seen corresponding path program 3 times [2024-11-21 21:17:58,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:17:58,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719946534] [2024-11-21 21:17:58,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 21:17:58,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:17:58,222 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-21 21:17:58,223 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 21:17:58,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1331 trivial. 0 not checked. [2024-11-21 21:17:58,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:17:58,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719946534] [2024-11-21 21:17:58,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719946534] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:17:58,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 21:17:58,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-21 21:17:58,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068093465] [2024-11-21 21:17:58,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:17:58,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-21 21:17:58,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:17:58,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-21 21:17:58,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-21 21:17:58,712 INFO L87 Difference]: Start difference. First operand 27519 states and 37342 transitions. Second operand has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-21 21:17:59,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-21 21:18:02,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-21 21:18:05,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-21 21:18:06,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:18:06,149 INFO L93 Difference]: Finished difference Result 54952 states and 74590 transitions. [2024-11-21 21:18:06,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-21 21:18:06,150 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 463 [2024-11-21 21:18:06,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:18:06,178 INFO L225 Difference]: With dead ends: 54952 [2024-11-21 21:18:06,178 INFO L226 Difference]: Without dead ends: 27793 [2024-11-21 21:18:06,201 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-21 21:18:06,202 INFO L432 NwaCegarLoop]: 322 mSDtfsCounter, 344 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 1620 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2024-11-21 21:18:06,202 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 1620 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2024-11-21 21:18:06,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27793 states. [2024-11-21 21:18:06,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27793 to 27615. [2024-11-21 21:18:06,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27615 states, 27546 states have (on average 1.355804835547811) internal successors, (37347), 27554 states have internal predecessors, (37347), 61 states have call successors, (61), 7 states have call predecessors, (61), 7 states have return successors, (61), 55 states have call predecessors, (61), 61 states have call successors, (61) [2024-11-21 21:18:06,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27615 states to 27615 states and 37469 transitions. [2024-11-21 21:18:06,495 INFO L78 Accepts]: Start accepts. Automaton has 27615 states and 37469 transitions. Word has length 463 [2024-11-21 21:18:06,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:18:06,496 INFO L471 AbstractCegarLoop]: Abstraction has 27615 states and 37469 transitions. [2024-11-21 21:18:06,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-21 21:18:06,496 INFO L276 IsEmpty]: Start isEmpty. Operand 27615 states and 37469 transitions. [2024-11-21 21:18:06,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2024-11-21 21:18:06,529 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:18:06,529 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:18:06,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-21 21:18:06,530 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:18:06,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:18:06,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1536279133, now seen corresponding path program 1 times [2024-11-21 21:18:06,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:18:06,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800640436] [2024-11-21 21:18:06,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:18:06,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:18:06,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:18:07,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 1204 trivial. 0 not checked. [2024-11-21 21:18:07,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:18:07,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800640436] [2024-11-21 21:18:07,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800640436] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:18:07,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 21:18:07,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-21 21:18:07,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388580617] [2024-11-21 21:18:07,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:18:07,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-21 21:18:07,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:18:07,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-21 21:18:07,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-21 21:18:07,853 INFO L87 Difference]: Start difference. First operand 27615 states and 37469 transitions. Second operand has 8 states, 8 states have (on average 23.75) internal successors, (190), 8 states have internal predecessors, (190), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-21 21:18:08,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:18:08,629 INFO L93 Difference]: Finished difference Result 130602 states and 177351 transitions. [2024-11-21 21:18:08,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-21 21:18:08,630 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 23.75) internal successors, (190), 8 states have internal predecessors, (190), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 487 [2024-11-21 21:18:08,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:18:08,765 INFO L225 Difference]: With dead ends: 130602 [2024-11-21 21:18:08,767 INFO L226 Difference]: Without dead ends: 103456 [2024-11-21 21:18:08,823 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-11-21 21:18:08,824 INFO L432 NwaCegarLoop]: 338 mSDtfsCounter, 564 mSDsluCounter, 1567 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 1905 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-21 21:18:08,824 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [570 Valid, 1905 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-21 21:18:08,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103456 states.