./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 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/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.fs.icfgbuilder-eval-023d838-m [2024-11-09 18:34:20,830 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 18:34:20,896 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 18:34:20,900 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 18:34:20,900 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 18:34:20,915 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 18:34:20,916 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 18:34:20,916 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 18:34:20,916 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 18:34:20,917 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 18:34:20,917 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 18:34:20,917 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 18:34:20,918 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 18:34:20,918 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 18:34:20,918 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 18:34:20,918 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 18:34:20,919 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 18:34:20,919 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 18:34:20,919 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 18:34:20,919 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 18:34:20,920 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 18:34:20,923 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 18:34:20,924 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 18:34:20,924 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 18:34:20,926 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 18:34:20,926 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 18:34:20,927 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 18:34:20,927 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 18:34:20,927 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 18:34:20,927 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 18:34:20,927 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 18:34:20,927 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 18:34:20,928 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:34:20,928 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 18:34:20,928 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 18:34:20,928 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 18:34:20,928 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 18:34:20,928 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 18:34:20,928 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 18:34:20,928 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 18:34:20,929 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 18:34:20,929 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 18:34:20,929 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 15b0cbd6c91287c392a1dcce1e0a32a1c72d5f0acdee848dea776c36b74cf850 [2024-11-09 18:34:21,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 18:34:21,167 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 18:34:21,169 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 18:34:21,172 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 18:34:21,172 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 18:34:21,173 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memory-model/4SB.i [2024-11-09 18:34:22,401 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 18:34:22,583 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 18:34:22,584 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memory-model/4SB.i [2024-11-09 18:34:22,593 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/525475114/4895a86c87724225ba14162a5944e5b2/FLAG7920e3646 [2024-11-09 18:34:22,604 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/525475114/4895a86c87724225ba14162a5944e5b2 [2024-11-09 18:34:22,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 18:34:22,607 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 18:34:22,609 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 18:34:22,609 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 18:34:22,613 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 18:34:22,613 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:34:22" (1/1) ... [2024-11-09 18:34:22,614 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23bc1553 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:34:22, skipping insertion in model container [2024-11-09 18:34:22,614 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:34:22" (1/1) ... [2024-11-09 18:34:22,642 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 18:34:22,975 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] [2024-11-09 18:34:22,980 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:34:22,986 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 18:34:23,066 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] [2024-11-09 18:34:23,067 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:34:23,081 INFO L204 MainTranslator]: Completed translation [2024-11-09 18:34:23,081 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:34:23 WrapperNode [2024-11-09 18:34:23,081 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 18:34:23,082 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 18:34:23,082 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 18:34:23,082 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 18:34:23,087 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:34:23" (1/1) ... [2024-11-09 18:34:23,105 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:34:23" (1/1) ... [2024-11-09 18:34:23,172 INFO L138 Inliner]: procedures = 27, calls = 680, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 1631 [2024-11-09 18:34:23,173 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 18:34:23,173 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 18:34:23,173 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 18:34:23,174 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 18:34:23,183 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:34:23" (1/1) ... [2024-11-09 18:34:23,183 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:34:23" (1/1) ... [2024-11-09 18:34:23,200 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:34:23" (1/1) ... [2024-11-09 18:34:23,243 INFO L175 MemorySlicer]: Split 488 memory accesses to 16 slices as follows [10, 45, 12, 152, 11, 60, 13, 12, 3, 10, 10, 96, 13, 15, 13, 13]. 31 percent of accesses are in the largest equivalence class. The 36 initializations are split as follows [0, 0, 10, 0, 0, 0, 5, 5, 0, 1, 0, 0, 5, 0, 5, 5]. The 171 writes are split as follows [5, 15, 1, 80, 5, 20, 2, 2, 2, 3, 5, 20, 2, 5, 2, 2]. [2024-11-09 18:34:23,244 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:34:23" (1/1) ... [2024-11-09 18:34:23,244 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:34:23" (1/1) ... [2024-11-09 18:34:23,275 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:34:23" (1/1) ... [2024-11-09 18:34:23,280 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:34:23" (1/1) ... [2024-11-09 18:34:23,284 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:34:23" (1/1) ... [2024-11-09 18:34:23,290 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:34:23" (1/1) ... [2024-11-09 18:34:23,301 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 18:34:23,302 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 18:34:23,302 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 18:34:23,302 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 18:34:23,303 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:34:23" (1/1) ... [2024-11-09 18:34:23,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:34:23,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:34:23,333 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) [2024-11-09 18:34:23,335 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 [2024-11-09 18:34:23,376 INFO L130 BoogieDeclarations]: Found specification of procedure store_buffering_4_conditions [2024-11-09 18:34:23,377 INFO L138 BoogieDeclarations]: Found implementation of procedure store_buffering_4_conditions [2024-11-09 18:34:23,377 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_write [2024-11-09 18:34:23,377 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_write [2024-11-09 18:34:23,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_headerT [2024-11-09 18:34:23,378 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_nondet_headerT [2024-11-09 18:34:23,378 INFO L130 BoogieDeclarations]: Found specification of procedure stepWriteBuffer [2024-11-09 18:34:23,378 INFO L138 BoogieDeclarations]: Found implementation of procedure stepWriteBuffer [2024-11-09 18:34:23,378 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_read [2024-11-09 18:34:23,378 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_read [2024-11-09 18:34:23,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 18:34:23,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 18:34:23,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 18:34:23,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 18:34:23,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 18:34:23,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-09 18:34:23,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-09 18:34:23,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-09 18:34:23,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-09 18:34:23,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-09 18:34:23,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-09 18:34:23,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-09 18:34:23,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-09 18:34:23,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-09 18:34:23,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-11-09 18:34:23,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2024-11-09 18:34:23,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2024-11-09 18:34:23,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 18:34:23,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 18:34:23,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 18:34:23,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-09 18:34:23,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-09 18:34:23,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-09 18:34:23,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-09 18:34:23,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-09 18:34:23,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-09 18:34:23,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-09 18:34:23,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-09 18:34:23,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-09 18:34:23,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-09 18:34:23,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-11-09 18:34:23,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2024-11-09 18:34:23,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2024-11-09 18:34:23,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 18:34:23,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 18:34:23,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 18:34:23,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 18:34:23,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-09 18:34:23,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-09 18:34:23,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-09 18:34:23,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-09 18:34:23,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-09 18:34:23,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-09 18:34:23,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-09 18:34:23,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-09 18:34:23,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-09 18:34:23,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-09 18:34:23,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-09 18:34:23,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-09 18:34:23,384 INFO L130 BoogieDeclarations]: Found specification of procedure initWriteBuffer [2024-11-09 18:34:23,384 INFO L138 BoogieDeclarations]: Found implementation of procedure initWriteBuffer [2024-11-09 18:34:23,384 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_fence [2024-11-09 18:34:23,385 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_fence [2024-11-09 18:34:23,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 18:34:23,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 18:34:23,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 18:34:23,610 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 18:34:23,612 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 18:34:24,789 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L62: havoc __VERIFIER_nondet_operations_#t~nondet1#1; [2024-11-09 18:34:24,789 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L71: havoc #t~mem7#1;havoc #t~mem8#1;havoc #t~mem9#1;havoc #t~mem10#1;havoc #t~mem11#1;call ULTIMATE.dealloc(~#result~0#1.base, ~#result~0#1.offset);havoc ~#result~0#1.base, ~#result~0#1.offset; [2024-11-09 18:34:25,413 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L59: havoc __VERIFIER_nondet_step_#t~nondet0#1; [2024-11-09 18:34:25,413 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L95: call ULTIMATE.dealloc(main_~#sharedMemory~0#1.base, main_~#sharedMemory~0#1.offset);havoc main_~#sharedMemory~0#1.base, main_~#sharedMemory~0#1.offset;call ULTIMATE.dealloc(main_~#wrBuffer0~0#1.base, main_~#wrBuffer0~0#1.offset);havoc main_~#wrBuffer0~0#1.base, main_~#wrBuffer0~0#1.offset;call ULTIMATE.dealloc(main_~#wrBuffer1~0#1.base, main_~#wrBuffer1~0#1.offset);havoc main_~#wrBuffer1~0#1.base, main_~#wrBuffer1~0#1.offset;call ULTIMATE.dealloc(main_~#wrBuffer2~0#1.base, main_~#wrBuffer2~0#1.offset);havoc main_~#wrBuffer2~0#1.base, main_~#wrBuffer2~0#1.offset;call ULTIMATE.dealloc(main_~#wrBuffer3~0#1.base, main_~#wrBuffer3~0#1.offset);havoc main_~#wrBuffer3~0#1.base, main_~#wrBuffer3~0#1.offset;call ULTIMATE.dealloc(main_~#g_history~0#1.base, main_~#g_history~0#1.offset);havoc main_~#g_history~0#1.base, main_~#g_history~0#1.offset;call ULTIMATE.dealloc(main_~#global_time~0#1.base, main_~#global_time~0#1.offset);havoc main_~#global_time~0#1.base, main_~#global_time~0#1.offset;call ULTIMATE.dealloc(main_~#litmus_input~0#1.base, main_~#litmus_input~0#1.offset);havoc main_~#litmus_input~0#1.base, main_~#litmus_input~0#1.offset;call ULTIMATE.dealloc(main_~#input_action~0#1.base, main_~#input_action~0#1.offset);havoc main_~#input_action~0#1.base, main_~#input_action~0#1.offset; [2024-11-09 18:34:25,500 INFO L? ?]: Removed 214 outVars from TransFormulas that were not future-live. [2024-11-09 18:34:25,500 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 18:34:25,523 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 18:34:25,526 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 18:34:25,527 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:34:25 BoogieIcfgContainer [2024-11-09 18:34:25,527 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 18:34:25,529 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 18:34:25,529 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 18:34:25,532 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 18:34:25,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:34:22" (1/3) ... [2024-11-09 18:34:25,533 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30e927c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:34:25, skipping insertion in model container [2024-11-09 18:34:25,533 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:34:23" (2/3) ... [2024-11-09 18:34:25,533 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30e927c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:34:25, skipping insertion in model container [2024-11-09 18:34:25,533 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:34:25" (3/3) ... [2024-11-09 18:34:25,534 INFO L112 eAbstractionObserver]: Analyzing ICFG 4SB.i [2024-11-09 18:34:25,549 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 18:34:25,549 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 18:34:25,616 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 18:34:25,623 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;@66b1bd01, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 18:34:25,624 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 18:34:25,628 INFO L276 IsEmpty]: Start isEmpty. Operand has 287 states, 252 states have (on average 1.5674603174603174) internal successors, (395), 257 states have internal predecessors, (395), 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) [2024-11-09 18:34:25,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-09 18:34:25,645 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:34:25,646 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] [2024-11-09 18:34:25,646 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:34:25,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:34:25,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1770782883, now seen corresponding path program 1 times [2024-11-09 18:34:25,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:34:25,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261184355] [2024-11-09 18:34:25,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:34:25,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:34:26,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:26,214 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-09 18:34:26,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:26,223 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-09 18:34:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:26,228 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-09 18:34:26,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:26,239 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-09 18:34:26,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:26,255 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-09 18:34:26,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:26,350 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-09 18:34:26,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:26,497 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-09 18:34:26,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:34:26,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261184355] [2024-11-09 18:34:26,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261184355] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:34:26,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:34:26,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 18:34:26,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353028507] [2024-11-09 18:34:26,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:34:26,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:34:26,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:34:26,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:34:26,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:34:26,535 INFO L87 Difference]: Start difference. First operand has 287 states, 252 states have (on average 1.5674603174603174) internal successors, (395), 257 states have internal predecessors, (395), 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 4 states, 4 states have (on average 12.0) internal successors, (48), 2 states have internal predecessors, (48), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-09 18:34:27,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:34:27,931 INFO L93 Difference]: Finished difference Result 573 states and 901 transitions. [2024-11-09 18:34:27,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 18:34:27,933 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 2 states have internal predecessors, (48), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 74 [2024-11-09 18:34:27,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:34:27,945 INFO L225 Difference]: With dead ends: 573 [2024-11-09 18:34:27,945 INFO L226 Difference]: Without dead ends: 275 [2024-11-09 18:34:27,950 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:34:27,952 INFO L432 NwaCegarLoop]: 355 mSDtfsCounter, 67 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-09 18:34:27,955 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 904 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-09 18:34:27,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2024-11-09 18:34:28,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 272. [2024-11-09 18:34:28,007 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) [2024-11-09 18:34:28,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 363 transitions. [2024-11-09 18:34:28,016 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 363 transitions. Word has length 74 [2024-11-09 18:34:28,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:34:28,017 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 363 transitions. [2024-11-09 18:34:28,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 2 states have internal predecessors, (48), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-09 18:34:28,017 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 363 transitions. [2024-11-09 18:34:28,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-09 18:34:28,020 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:34:28,020 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 18:34:28,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 18:34:28,020 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:34:28,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:34:28,021 INFO L85 PathProgramCache]: Analyzing trace with hash 422461651, now seen corresponding path program 1 times [2024-11-09 18:34:28,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:34:28,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933513658] [2024-11-09 18:34:28,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:34:28,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:34:28,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:28,346 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-09 18:34:28,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:28,363 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 18:34:28,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:28,369 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-09 18:34:28,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:28,376 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-09 18:34:28,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:28,385 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-09 18:34:28,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:28,454 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-11-09 18:34:28,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:28,532 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-09 18:34:28,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:34:28,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933513658] [2024-11-09 18:34:28,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933513658] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:34:28,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538360127] [2024-11-09 18:34:28,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:34:28,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:34:28,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:34:28,536 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) [2024-11-09 18:34:28,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 18:34:28,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:28,914 INFO L255 TraceCheckSpWp]: Trace formula consists of 642 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 18:34:28,923 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:34:28,970 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-09 18:34:28,970 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:34:28,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538360127] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:34:28,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:34:28,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-09 18:34:28,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240652809] [2024-11-09 18:34:28,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:34:28,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:34:28,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:34:28,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:34:28,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 18:34:28,973 INFO L87 Difference]: Start difference. First operand 272 states and 363 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-11-09 18:34:28,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:34:28,991 INFO L93 Difference]: Finished difference Result 275 states and 365 transitions. [2024-11-09 18:34:28,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:34:28,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 85 [2024-11-09 18:34:28,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:34:28,996 INFO L225 Difference]: With dead ends: 275 [2024-11-09 18:34:28,996 INFO L226 Difference]: Without dead ends: 272 [2024-11-09 18:34:28,996 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 18:34:28,997 INFO L432 NwaCegarLoop]: 363 mSDtfsCounter, 0 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:34:28,997 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 721 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:34:28,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-11-09 18:34:29,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2024-11-09 18:34:29,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 238 states have (on average 1.3025210084033614) internal successors, (310), 242 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) [2024-11-09 18:34:29,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 362 transitions. [2024-11-09 18:34:29,010 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 362 transitions. Word has length 85 [2024-11-09 18:34:29,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:34:29,014 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 362 transitions. [2024-11-09 18:34:29,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-11-09 18:34:29,015 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 362 transitions. [2024-11-09 18:34:29,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-09 18:34:29,016 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:34:29,016 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 18:34:29,033 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 18:34:29,217 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 [2024-11-09 18:34:29,218 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:34:29,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:34:29,218 INFO L85 PathProgramCache]: Analyzing trace with hash 422460690, now seen corresponding path program 1 times [2024-11-09 18:34:29,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:34:29,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548620659] [2024-11-09 18:34:29,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:34:29,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:34:29,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:29,442 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-09 18:34:29,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:29,456 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 18:34:29,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:29,462 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-09 18:34:29,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:29,477 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-09 18:34:29,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:29,487 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-09 18:34:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:29,568 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-11-09 18:34:29,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:29,661 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-09 18:34:29,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:34:29,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548620659] [2024-11-09 18:34:29,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548620659] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:34:29,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744955825] [2024-11-09 18:34:29,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:34:29,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:34:29,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:34:29,663 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) [2024-11-09 18:34:29,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 18:34:30,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:30,035 INFO L255 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 18:34:30,038 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:34:30,053 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-09 18:34:30,053 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:34:30,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744955825] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:34:30,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:34:30,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-09 18:34:30,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351153815] [2024-11-09 18:34:30,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:34:30,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:34:30,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:34:30,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:34:30,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 18:34:30,055 INFO L87 Difference]: Start difference. First operand 272 states and 362 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-11-09 18:34:30,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:34:30,074 INFO L93 Difference]: Finished difference Result 542 states and 722 transitions. [2024-11-09 18:34:30,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:34:30,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 85 [2024-11-09 18:34:30,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:34:30,076 INFO L225 Difference]: With dead ends: 542 [2024-11-09 18:34:30,076 INFO L226 Difference]: Without dead ends: 274 [2024-11-09 18:34:30,077 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 18:34:30,081 INFO L432 NwaCegarLoop]: 361 mSDtfsCounter, 0 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 718 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 [2024-11-09 18:34:30,082 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 718 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:34:30,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-11-09 18:34:30,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2024-11-09 18:34:30,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 240 states have (on average 1.3) internal successors, (312), 244 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) [2024-11-09 18:34:30,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 364 transitions. [2024-11-09 18:34:30,100 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 364 transitions. Word has length 85 [2024-11-09 18:34:30,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:34:30,100 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 364 transitions. [2024-11-09 18:34:30,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-11-09 18:34:30,101 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 364 transitions. [2024-11-09 18:34:30,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-09 18:34:30,102 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:34:30,102 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2024-11-09 18:34:30,119 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 18:34:30,306 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 [2024-11-09 18:34:30,307 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:34:30,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:34:30,308 INFO L85 PathProgramCache]: Analyzing trace with hash -813165261, now seen corresponding path program 1 times [2024-11-09 18:34:30,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:34:30,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134544005] [2024-11-09 18:34:30,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:34:30,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:34:30,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:30,554 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 18:34:30,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:30,567 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-09 18:34:30,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:30,570 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-09 18:34:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:30,581 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-09 18:34:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:30,591 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-09 18:34:30,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:30,665 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-09 18:34:30,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:30,793 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-09 18:34:30,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:34:30,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134544005] [2024-11-09 18:34:30,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134544005] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:34:30,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670021650] [2024-11-09 18:34:30,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:34:30,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:34:30,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:34:30,795 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) [2024-11-09 18:34:30,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 18:34:31,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:31,274 INFO L255 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 18:34:31,277 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:34:31,286 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 18:34:31,287 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:34:31,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670021650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:34:31,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:34:31,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 7 [2024-11-09 18:34:31,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369259718] [2024-11-09 18:34:31,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:34:31,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:34:31,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:34:31,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:34:31,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 18:34:31,289 INFO L87 Difference]: Start difference. First operand 274 states and 364 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-11-09 18:34:31,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:34:31,305 INFO L93 Difference]: Finished difference Result 541 states and 724 transitions. [2024-11-09 18:34:31,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:34:31,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 87 [2024-11-09 18:34:31,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:34:31,307 INFO L225 Difference]: With dead ends: 541 [2024-11-09 18:34:31,307 INFO L226 Difference]: Without dead ends: 276 [2024-11-09 18:34:31,308 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 18:34:31,309 INFO L432 NwaCegarLoop]: 361 mSDtfsCounter, 0 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:34:31,309 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 719 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:34:31,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2024-11-09 18:34:31,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2024-11-09 18:34:31,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 242 states have (on average 1.2975206611570247) internal successors, (314), 246 states have internal predecessors, (314), 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) [2024-11-09 18:34:31,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 366 transitions. [2024-11-09 18:34:31,321 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 366 transitions. Word has length 87 [2024-11-09 18:34:31,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:34:31,321 INFO L471 AbstractCegarLoop]: Abstraction has 276 states and 366 transitions. [2024-11-09 18:34:31,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-11-09 18:34:31,322 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 366 transitions. [2024-11-09 18:34:31,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-09 18:34:31,323 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:34:31,323 INFO L215 NwaCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 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] [2024-11-09 18:34:31,342 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 18:34:31,524 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 [2024-11-09 18:34:31,524 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:34:31,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:34:31,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1705632525, now seen corresponding path program 1 times [2024-11-09 18:34:31,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:34:31,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622596117] [2024-11-09 18:34:31,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:34:31,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:34:31,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:31,861 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 18:34:31,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:31,886 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-09 18:34:31,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:31,893 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 18:34:31,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:31,900 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-09 18:34:31,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:31,914 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-09 18:34:32,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:32,015 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-09 18:34:32,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:32,115 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-09 18:34:32,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:34:32,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622596117] [2024-11-09 18:34:32,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622596117] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:34:32,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287080834] [2024-11-09 18:34:32,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:34:32,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:34:32,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:34:32,122 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) [2024-11-09 18:34:32,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 18:34:32,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:32,628 INFO L255 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 18:34:32,631 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:34:32,650 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-09 18:34:32,650 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:34:32,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287080834] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:34:32,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:34:32,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-09 18:34:32,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593370777] [2024-11-09 18:34:32,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:34:32,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:34:32,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:34:32,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:34:32,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-09 18:34:32,652 INFO L87 Difference]: Start difference. First operand 276 states and 366 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-11-09 18:34:32,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:34:32,687 INFO L93 Difference]: Finished difference Result 529 states and 703 transitions. [2024-11-09 18:34:32,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:34:32,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 95 [2024-11-09 18:34:32,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:34:32,690 INFO L225 Difference]: With dead ends: 529 [2024-11-09 18:34:32,690 INFO L226 Difference]: Without dead ends: 284 [2024-11-09 18:34:32,691 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-09 18:34:32,692 INFO L432 NwaCegarLoop]: 357 mSDtfsCounter, 6 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 710 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 [2024-11-09 18:34:32,692 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 710 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:34:32,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2024-11-09 18:34:32,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 278. [2024-11-09 18:34:32,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 244 states have (on average 1.2950819672131149) internal successors, (316), 248 states have internal predecessors, (316), 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) [2024-11-09 18:34:32,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 368 transitions. [2024-11-09 18:34:32,702 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 368 transitions. Word has length 95 [2024-11-09 18:34:32,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:34:32,702 INFO L471 AbstractCegarLoop]: Abstraction has 278 states and 368 transitions. [2024-11-09 18:34:32,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-11-09 18:34:32,703 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 368 transitions. [2024-11-09 18:34:32,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-09 18:34:32,704 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:34:32,704 INFO L215 NwaCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:34:32,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 18:34:32,905 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 [2024-11-09 18:34:32,905 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:34:32,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:34:32,906 INFO L85 PathProgramCache]: Analyzing trace with hash 658088283, now seen corresponding path program 1 times [2024-11-09 18:34:32,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:34:32,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399856635] [2024-11-09 18:34:32,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:34:32,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:34:33,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:33,310 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 18:34:33,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:33,336 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-09 18:34:33,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:33,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 18:34:33,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:33,351 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-09 18:34:33,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:33,366 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-09 18:34:33,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:33,541 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-09 18:34:33,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:33,650 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-09 18:34:33,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:34:33,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399856635] [2024-11-09 18:34:33,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399856635] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:34:33,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740834484] [2024-11-09 18:34:33,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:34:33,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:34:33,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:34:33,653 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) [2024-11-09 18:34:33,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 18:34:34,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:34,204 INFO L255 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 18:34:34,207 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:34:34,223 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-09 18:34:34,223 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:34:34,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740834484] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:34:34,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:34:34,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-09 18:34:34,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550902608] [2024-11-09 18:34:34,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:34:34,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:34:34,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:34:34,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:34:34,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-09 18:34:34,226 INFO L87 Difference]: Start difference. First operand 278 states and 368 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2024-11-09 18:34:34,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:34:34,258 INFO L93 Difference]: Finished difference Result 522 states and 693 transitions. [2024-11-09 18:34:34,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:34:34,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 99 [2024-11-09 18:34:34,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:34:34,261 INFO L225 Difference]: With dead ends: 522 [2024-11-09 18:34:34,261 INFO L226 Difference]: Without dead ends: 286 [2024-11-09 18:34:34,262 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-09 18:34:34,262 INFO L432 NwaCegarLoop]: 357 mSDtfsCounter, 6 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 709 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 [2024-11-09 18:34:34,262 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 709 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:34:34,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2024-11-09 18:34:34,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 280. [2024-11-09 18:34:34,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 246 states have (on average 1.2926829268292683) internal successors, (318), 250 states have internal predecessors, (318), 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) [2024-11-09 18:34:34,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 370 transitions. [2024-11-09 18:34:34,274 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 370 transitions. Word has length 99 [2024-11-09 18:34:34,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:34:34,275 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 370 transitions. [2024-11-09 18:34:34,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2024-11-09 18:34:34,275 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 370 transitions. [2024-11-09 18:34:34,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-09 18:34:34,277 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:34:34,277 INFO L215 NwaCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 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] [2024-11-09 18:34:34,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 18:34:34,477 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 [2024-11-09 18:34:34,478 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:34:34,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:34:34,479 INFO L85 PathProgramCache]: Analyzing trace with hash -441934413, now seen corresponding path program 1 times [2024-11-09 18:34:34,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:34:34,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728484815] [2024-11-09 18:34:34,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:34:34,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:34:34,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:34,797 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 18:34:34,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:34,820 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-09 18:34:34,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:34,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 18:34:34,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:34,832 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-09 18:34:34,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:34,846 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-09 18:34:34,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:34,943 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-09 18:34:35,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:35,029 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-09 18:34:35,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:34:35,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728484815] [2024-11-09 18:34:35,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728484815] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:34:35,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246473002] [2024-11-09 18:34:35,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:34:35,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:34:35,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:34:35,032 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) [2024-11-09 18:34:35,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 18:34:35,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:35,582 INFO L255 TraceCheckSpWp]: Trace formula consists of 735 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 18:34:35,584 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:34:35,598 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-11-09 18:34:35,598 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:34:35,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246473002] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:34:35,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:34:35,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-09 18:34:35,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193833873] [2024-11-09 18:34:35,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:34:35,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:34:35,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:34:35,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:34:35,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-09 18:34:35,601 INFO L87 Difference]: Start difference. First operand 280 states and 370 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2024-11-09 18:34:35,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:34:35,634 INFO L93 Difference]: Finished difference Result 515 states and 683 transitions. [2024-11-09 18:34:35,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:34:35,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 103 [2024-11-09 18:34:35,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:34:35,636 INFO L225 Difference]: With dead ends: 515 [2024-11-09 18:34:35,637 INFO L226 Difference]: Without dead ends: 288 [2024-11-09 18:34:35,637 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-09 18:34:35,638 INFO L432 NwaCegarLoop]: 357 mSDtfsCounter, 6 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 709 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 [2024-11-09 18:34:35,638 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 709 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:34:35,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-11-09 18:34:35,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 282. [2024-11-09 18:34:35,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 248 states have (on average 1.2903225806451613) internal successors, (320), 252 states have internal predecessors, (320), 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) [2024-11-09 18:34:35,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 372 transitions. [2024-11-09 18:34:35,647 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 372 transitions. Word has length 103 [2024-11-09 18:34:35,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:34:35,647 INFO L471 AbstractCegarLoop]: Abstraction has 282 states and 372 transitions. [2024-11-09 18:34:35,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2024-11-09 18:34:35,647 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 372 transitions. [2024-11-09 18:34:35,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-09 18:34:35,649 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:34:35,649 INFO L215 NwaCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 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] [2024-11-09 18:34:35,669 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 18:34:35,850 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 [2024-11-09 18:34:35,850 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:34:35,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:34:35,851 INFO L85 PathProgramCache]: Analyzing trace with hash 295094299, now seen corresponding path program 1 times [2024-11-09 18:34:35,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:34:35,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30286678] [2024-11-09 18:34:35,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:34:35,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:34:36,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:36,133 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 18:34:36,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:36,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-09 18:34:36,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:36,164 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 18:34:36,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:36,170 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-09 18:34:36,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:36,183 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-09 18:34:36,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:36,296 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-11-09 18:34:36,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:36,433 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-09 18:34:36,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:34:36,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30286678] [2024-11-09 18:34:36,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30286678] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:34:36,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65824917] [2024-11-09 18:34:36,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:34:36,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:34:36,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:34:36,439 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) [2024-11-09 18:34:36,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 18:34:37,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:37,063 INFO L255 TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 18:34:37,066 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:34:37,081 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-09 18:34:37,081 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:34:37,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65824917] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:34:37,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:34:37,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-09 18:34:37,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953748606] [2024-11-09 18:34:37,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:34:37,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:34:37,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:34:37,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:34:37,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-09 18:34:37,083 INFO L87 Difference]: Start difference. First operand 282 states and 372 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2024-11-09 18:34:37,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:34:37,127 INFO L93 Difference]: Finished difference Result 504 states and 670 transitions. [2024-11-09 18:34:37,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:34:37,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 107 [2024-11-09 18:34:37,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:34:37,132 INFO L225 Difference]: With dead ends: 504 [2024-11-09 18:34:37,133 INFO L226 Difference]: Without dead ends: 290 [2024-11-09 18:34:37,133 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-09 18:34:37,135 INFO L432 NwaCegarLoop]: 357 mSDtfsCounter, 6 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 709 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 [2024-11-09 18:34:37,135 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 709 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:34:37,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2024-11-09 18:34:37,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 284. [2024-11-09 18:34:37,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 250 states have (on average 1.288) internal successors, (322), 254 states have internal predecessors, (322), 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) [2024-11-09 18:34:37,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 374 transitions. [2024-11-09 18:34:37,149 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 374 transitions. Word has length 107 [2024-11-09 18:34:37,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:34:37,150 INFO L471 AbstractCegarLoop]: Abstraction has 284 states and 374 transitions. [2024-11-09 18:34:37,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2024-11-09 18:34:37,150 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 374 transitions. [2024-11-09 18:34:37,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-09 18:34:37,151 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:34:37,151 INFO L215 NwaCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 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] [2024-11-09 18:34:37,181 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 18:34:37,352 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 [2024-11-09 18:34:37,353 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:34:37,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:34:37,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1038687859, now seen corresponding path program 1 times [2024-11-09 18:34:37,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:34:37,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277100901] [2024-11-09 18:34:37,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:34:37,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:34:37,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:37,677 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 18:34:37,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:37,699 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-09 18:34:37,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:37,704 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 18:34:37,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:37,710 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-09 18:34:37,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:37,722 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-09 18:34:37,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:37,830 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-11-09 18:34:37,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:37,906 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-09 18:34:37,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:34:37,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277100901] [2024-11-09 18:34:37,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277100901] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:34:37,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368044902] [2024-11-09 18:34:37,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:34:37,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:34:37,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:34:37,909 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) [2024-11-09 18:34:37,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 18:34:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:38,468 INFO L255 TraceCheckSpWp]: Trace formula consists of 745 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 18:34:38,471 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:34:38,485 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-11-09 18:34:38,485 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:34:38,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368044902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:34:38,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:34:38,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-09 18:34:38,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576249178] [2024-11-09 18:34:38,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:34:38,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:34:38,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:34:38,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:34:38,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-09 18:34:38,487 INFO L87 Difference]: Start difference. First operand 284 states and 374 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-11-09 18:34:38,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:34:38,607 INFO L93 Difference]: Finished difference Result 353 states and 481 transitions. [2024-11-09 18:34:38,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:34:38,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 111 [2024-11-09 18:34:38,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:34:38,609 INFO L225 Difference]: With dead ends: 353 [2024-11-09 18:34:38,609 INFO L226 Difference]: Without dead ends: 343 [2024-11-09 18:34:38,610 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-09 18:34:38,610 INFO L432 NwaCegarLoop]: 317 mSDtfsCounter, 93 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 631 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 [2024-11-09 18:34:38,610 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 631 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:34:38,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2024-11-09 18:34:38,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 286. [2024-11-09 18:34:38,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 252 states have (on average 1.2857142857142858) internal successors, (324), 256 states have internal predecessors, (324), 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) [2024-11-09 18:34:38,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 376 transitions. [2024-11-09 18:34:38,619 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 376 transitions. Word has length 111 [2024-11-09 18:34:38,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:34:38,619 INFO L471 AbstractCegarLoop]: Abstraction has 286 states and 376 transitions. [2024-11-09 18:34:38,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-11-09 18:34:38,620 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 376 transitions. [2024-11-09 18:34:38,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-09 18:34:38,621 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:34:38,621 INFO L215 NwaCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 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] [2024-11-09 18:34:38,641 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 18:34:38,821 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 [2024-11-09 18:34:38,822 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:34:38,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:34:38,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1009855898, now seen corresponding path program 1 times [2024-11-09 18:34:38,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:34:38,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694846641] [2024-11-09 18:34:38,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:34:38,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:34:39,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:39,137 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 18:34:39,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:39,159 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-09 18:34:39,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:39,164 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 18:34:39,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:39,170 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-09 18:34:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:39,184 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-09 18:34:39,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:39,274 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-11-09 18:34:39,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:39,363 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-09 18:34:39,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:34:39,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694846641] [2024-11-09 18:34:39,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694846641] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:34:39,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93947621] [2024-11-09 18:34:39,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:34:39,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:34:39,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:34:39,366 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) [2024-11-09 18:34:39,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 18:34:39,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:39,955 INFO L255 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 18:34:39,958 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:34:39,987 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-11-09 18:34:39,987 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:34:39,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93947621] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:34:39,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:34:39,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-09 18:34:39,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684340638] [2024-11-09 18:34:39,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:34:39,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:34:39,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:34:39,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:34:39,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-09 18:34:39,990 INFO L87 Difference]: Start difference. First operand 286 states and 376 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2024-11-09 18:34:40,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:34:40,005 INFO L93 Difference]: Finished difference Result 355 states and 483 transitions. [2024-11-09 18:34:40,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:34:40,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 122 [2024-11-09 18:34:40,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:34:40,009 INFO L225 Difference]: With dead ends: 355 [2024-11-09 18:34:40,009 INFO L226 Difference]: Without dead ends: 345 [2024-11-09 18:34:40,010 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-09 18:34:40,010 INFO L432 NwaCegarLoop]: 360 mSDtfsCounter, 83 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 718 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 [2024-11-09 18:34:40,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 718 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:34:40,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2024-11-09 18:34:40,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 343. [2024-11-09 18:34:40,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 309 states have (on average 1.3495145631067962) internal successors, (417), 313 states have internal predecessors, (417), 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) [2024-11-09 18:34:40,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 469 transitions. [2024-11-09 18:34:40,026 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 469 transitions. Word has length 122 [2024-11-09 18:34:40,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:34:40,026 INFO L471 AbstractCegarLoop]: Abstraction has 343 states and 469 transitions. [2024-11-09 18:34:40,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2024-11-09 18:34:40,026 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 469 transitions. [2024-11-09 18:34:40,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-09 18:34:40,028 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:34:40,028 INFO L215 NwaCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 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] [2024-11-09 18:34:40,049 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 18:34:40,229 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 [2024-11-09 18:34:40,229 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:34:40,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:34:40,230 INFO L85 PathProgramCache]: Analyzing trace with hash -937213256, now seen corresponding path program 1 times [2024-11-09 18:34:40,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:34:40,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762659988] [2024-11-09 18:34:40,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:34:40,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:34:40,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:40,541 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 18:34:40,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:40,569 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-09 18:34:40,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:40,574 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 18:34:40,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:40,580 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-09 18:34:40,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:40,594 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-09 18:34:40,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:40,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-11-09 18:34:40,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:40,785 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-09 18:34:40,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:34:40,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762659988] [2024-11-09 18:34:40,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762659988] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:34:40,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674172050] [2024-11-09 18:34:40,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:34:40,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:34:40,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:34:40,790 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) [2024-11-09 18:34:40,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 18:34:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:41,404 INFO L255 TraceCheckSpWp]: Trace formula consists of 858 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 18:34:41,408 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:34:41,483 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-11-09 18:34:41,484 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:34:41,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674172050] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:34:41,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:34:41,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-09 18:34:41,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293743751] [2024-11-09 18:34:41,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:34:41,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:34:41,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:34:41,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:34:41,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-09 18:34:41,487 INFO L87 Difference]: Start difference. First operand 343 states and 469 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2024-11-09 18:34:41,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:34:41,503 INFO L93 Difference]: Finished difference Result 471 states and 671 transitions. [2024-11-09 18:34:41,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:34:41,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 150 [2024-11-09 18:34:41,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:34:41,507 INFO L225 Difference]: With dead ends: 471 [2024-11-09 18:34:41,507 INFO L226 Difference]: Without dead ends: 461 [2024-11-09 18:34:41,507 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-09 18:34:41,508 INFO L432 NwaCegarLoop]: 361 mSDtfsCounter, 55 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 719 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 [2024-11-09 18:34:41,509 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 719 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:34:41,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2024-11-09 18:34:41,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 461. [2024-11-09 18:34:41,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 427 states have (on average 1.4215456674473068) internal successors, (607), 431 states have internal predecessors, (607), 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) [2024-11-09 18:34:41,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 659 transitions. [2024-11-09 18:34:41,525 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 659 transitions. Word has length 150 [2024-11-09 18:34:41,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:34:41,526 INFO L471 AbstractCegarLoop]: Abstraction has 461 states and 659 transitions. [2024-11-09 18:34:41,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2024-11-09 18:34:41,526 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 659 transitions. [2024-11-09 18:34:41,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-09 18:34:41,530 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:34:41,530 INFO L215 NwaCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1] [2024-11-09 18:34:41,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 18:34:41,731 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 [2024-11-09 18:34:41,731 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:34:41,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:34:41,732 INFO L85 PathProgramCache]: Analyzing trace with hash 2138554625, now seen corresponding path program 1 times [2024-11-09 18:34:41,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:34:41,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985480398] [2024-11-09 18:34:41,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:34:41,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:34:42,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:42,115 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 18:34:42,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:42,136 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-09 18:34:42,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:42,142 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 18:34:42,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:42,148 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-09 18:34:42,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:42,160 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-09 18:34:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:42,246 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-11-09 18:34:42,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:42,339 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-09 18:34:42,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:34:42,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985480398] [2024-11-09 18:34:42,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985480398] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:34:42,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587764530] [2024-11-09 18:34:42,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:34:42,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:34:42,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:34:42,342 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) [2024-11-09 18:34:42,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 18:34:42,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:42,991 INFO L255 TraceCheckSpWp]: Trace formula consists of 889 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 18:34:42,996 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:34:43,075 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-11-09 18:34:43,075 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:34:43,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587764530] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:34:43,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:34:43,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-09 18:34:43,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092597645] [2024-11-09 18:34:43,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:34:43,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:34:43,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:34:43,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:34:43,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-09 18:34:43,077 INFO L87 Difference]: Start difference. First operand 461 states and 659 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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) [2024-11-09 18:34:43,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:34:43,093 INFO L93 Difference]: Finished difference Result 707 states and 1051 transitions. [2024-11-09 18:34:43,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:34:43,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 [2024-11-09 18:34:43,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:34:43,097 INFO L225 Difference]: With dead ends: 707 [2024-11-09 18:34:43,097 INFO L226 Difference]: Without dead ends: 697 [2024-11-09 18:34:43,098 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-09 18:34:43,098 INFO L432 NwaCegarLoop]: 360 mSDtfsCounter, 54 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 718 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 [2024-11-09 18:34:43,098 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 718 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:34:43,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2024-11-09 18:34:43,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 697. [2024-11-09 18:34:43,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 663 states have (on average 1.48868778280543) internal successors, (987), 667 states have internal predecessors, (987), 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) [2024-11-09 18:34:43,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1039 transitions. [2024-11-09 18:34:43,114 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1039 transitions. Word has length 161 [2024-11-09 18:34:43,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:34:43,114 INFO L471 AbstractCegarLoop]: Abstraction has 697 states and 1039 transitions. [2024-11-09 18:34:43,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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) [2024-11-09 18:34:43,114 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1039 transitions. [2024-11-09 18:34:43,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-11-09 18:34:43,117 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:34:43,117 INFO L215 NwaCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2024-11-09 18:34:43,143 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 18:34:43,317 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 [2024-11-09 18:34:43,318 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:34:43,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:34:43,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1004373677, now seen corresponding path program 1 times [2024-11-09 18:34:43,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:34:43,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403287986] [2024-11-09 18:34:43,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:34:43,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:34:43,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:43,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 18:34:43,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:43,642 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-09 18:34:43,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:43,647 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 18:34:43,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:43,653 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-09 18:34:43,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:43,664 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-09 18:34:43,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:43,740 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-11-09 18:34:43,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:43,857 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-09 18:34:43,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:34:43,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403287986] [2024-11-09 18:34:43,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403287986] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:34:43,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091262368] [2024-11-09 18:34:43,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:34:43,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:34:43,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:34:43,863 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) [2024-11-09 18:34:43,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 18:34:44,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:44,505 INFO L255 TraceCheckSpWp]: Trace formula consists of 961 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 18:34:44,508 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:34:44,619 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2024-11-09 18:34:44,620 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:34:44,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091262368] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:34:44,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:34:44,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-09 18:34:44,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970496479] [2024-11-09 18:34:44,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:34:44,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:34:44,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:34:44,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:34:44,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-09 18:34:44,622 INFO L87 Difference]: Start difference. First operand 697 states and 1039 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2024-11-09 18:34:44,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:34:44,647 INFO L93 Difference]: Finished difference Result 1179 states and 1811 transitions. [2024-11-09 18:34:44,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:34:44,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 186 [2024-11-09 18:34:44,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:34:44,653 INFO L225 Difference]: With dead ends: 1179 [2024-11-09 18:34:44,654 INFO L226 Difference]: Without dead ends: 1169 [2024-11-09 18:34:44,654 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-09 18:34:44,656 INFO L432 NwaCegarLoop]: 360 mSDtfsCounter, 53 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 718 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 [2024-11-09 18:34:44,656 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 718 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:34:44,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2024-11-09 18:34:44,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1169. [2024-11-09 18:34:44,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1169 states, 1135 states have (on average 1.5392070484581497) internal successors, (1747), 1139 states have internal predecessors, (1747), 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) [2024-11-09 18:34:44,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1169 states to 1169 states and 1799 transitions. [2024-11-09 18:34:44,683 INFO L78 Accepts]: Start accepts. Automaton has 1169 states and 1799 transitions. Word has length 186 [2024-11-09 18:34:44,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:34:44,684 INFO L471 AbstractCegarLoop]: Abstraction has 1169 states and 1799 transitions. [2024-11-09 18:34:44,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2024-11-09 18:34:44,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1169 states and 1799 transitions. [2024-11-09 18:34:44,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-09 18:34:44,689 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:34:44,689 INFO L215 NwaCegarLoop]: trace histogram [8, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:34:44,713 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 18:34:44,889 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 [2024-11-09 18:34:44,890 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:34:44,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:34:44,890 INFO L85 PathProgramCache]: Analyzing trace with hash 50915901, now seen corresponding path program 1 times [2024-11-09 18:34:44,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:34:44,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776174857] [2024-11-09 18:34:44,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:34:44,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:34:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:45,218 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 18:34:45,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:45,239 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-09 18:34:45,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:45,244 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 18:34:45,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:45,250 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-09 18:34:45,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:45,261 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-09 18:34:45,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:45,370 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-11-09 18:34:45,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:45,459 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-09 18:34:45,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:34:45,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776174857] [2024-11-09 18:34:45,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776174857] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:34:45,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789550953] [2024-11-09 18:34:45,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:34:45,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:34:45,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:34:45,462 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) [2024-11-09 18:34:45,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 18:34:46,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:46,165 INFO L255 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 18:34:46,169 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:34:46,300 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2024-11-09 18:34:46,300 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:34:46,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789550953] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:34:46,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:34:46,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-09 18:34:46,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060324475] [2024-11-09 18:34:46,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:34:46,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:34:46,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:34:46,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:34:46,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-09 18:34:46,302 INFO L87 Difference]: Start difference. First operand 1169 states and 1799 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2024-11-09 18:34:46,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:34:46,333 INFO L93 Difference]: Finished difference Result 2123 states and 3331 transitions. [2024-11-09 18:34:46,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:34:46,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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 203 [2024-11-09 18:34:46,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:34:46,342 INFO L225 Difference]: With dead ends: 2123 [2024-11-09 18:34:46,343 INFO L226 Difference]: Without dead ends: 2113 [2024-11-09 18:34:46,344 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-09 18:34:46,345 INFO L432 NwaCegarLoop]: 360 mSDtfsCounter, 52 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 717 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 [2024-11-09 18:34:46,346 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 717 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:34:46,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2113 states. [2024-11-09 18:34:46,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2113 to 2113. [2024-11-09 18:34:46,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2113 states, 2079 states have (on average 1.5714285714285714) internal successors, (3267), 2083 states have internal predecessors, (3267), 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) [2024-11-09 18:34:46,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2113 states to 2113 states and 3319 transitions. [2024-11-09 18:34:46,395 INFO L78 Accepts]: Start accepts. Automaton has 2113 states and 3319 transitions. Word has length 203 [2024-11-09 18:34:46,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:34:46,396 INFO L471 AbstractCegarLoop]: Abstraction has 2113 states and 3319 transitions. [2024-11-09 18:34:46,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2024-11-09 18:34:46,397 INFO L276 IsEmpty]: Start isEmpty. Operand 2113 states and 3319 transitions. [2024-11-09 18:34:46,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2024-11-09 18:34:46,402 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:34:46,402 INFO L215 NwaCegarLoop]: trace histogram [8, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2024-11-09 18:34:46,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-09 18:34:46,603 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 [2024-11-09 18:34:46,604 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:34:46,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:34:46,604 INFO L85 PathProgramCache]: Analyzing trace with hash 341063054, now seen corresponding path program 1 times [2024-11-09 18:34:46,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:34:46,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800268724] [2024-11-09 18:34:46,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:34:46,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:34:46,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:46,953 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 18:34:46,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:46,977 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-09 18:34:46,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:46,987 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 18:34:46,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:46,998 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-09 18:34:47,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:47,020 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-09 18:34:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:47,121 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-11-09 18:34:47,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:47,283 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2024-11-09 18:34:47,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:34:47,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800268724] [2024-11-09 18:34:47,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800268724] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:34:47,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831875016] [2024-11-09 18:34:47,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:34:47,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:34:47,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:34:47,286 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) [2024-11-09 18:34:47,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 18:34:48,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:48,100 INFO L255 TraceCheckSpWp]: Trace formula consists of 1100 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 18:34:48,105 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:34:48,243 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2024-11-09 18:34:48,243 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:34:48,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831875016] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:34:48,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:34:48,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-09 18:34:48,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512088896] [2024-11-09 18:34:48,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:34:48,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:34:48,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:34:48,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:34:48,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-09 18:34:48,245 INFO L87 Difference]: Start difference. First operand 2113 states and 3319 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2024-11-09 18:34:48,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:34:48,283 INFO L93 Difference]: Finished difference Result 4011 states and 6371 transitions. [2024-11-09 18:34:48,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:34:48,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 234 [2024-11-09 18:34:48,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:34:48,299 INFO L225 Difference]: With dead ends: 4011 [2024-11-09 18:34:48,299 INFO L226 Difference]: Without dead ends: 4001 [2024-11-09 18:34:48,303 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-09 18:34:48,304 INFO L432 NwaCegarLoop]: 360 mSDtfsCounter, 51 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 718 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 [2024-11-09 18:34:48,304 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 718 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:34:48,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4001 states. [2024-11-09 18:34:48,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4001 to 4001. [2024-11-09 18:34:48,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4001 states, 3967 states have (on average 1.589866397781699) internal successors, (6307), 3971 states have internal predecessors, (6307), 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) [2024-11-09 18:34:48,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4001 states to 4001 states and 6359 transitions. [2024-11-09 18:34:48,389 INFO L78 Accepts]: Start accepts. Automaton has 4001 states and 6359 transitions. Word has length 234 [2024-11-09 18:34:48,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:34:48,390 INFO L471 AbstractCegarLoop]: Abstraction has 4001 states and 6359 transitions. [2024-11-09 18:34:48,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2024-11-09 18:34:48,390 INFO L276 IsEmpty]: Start isEmpty. Operand 4001 states and 6359 transitions. [2024-11-09 18:34:48,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2024-11-09 18:34:48,398 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:34:48,398 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 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, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 18:34:48,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-09 18:34:48,599 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 [2024-11-09 18:34:48,600 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:34:48,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:34:48,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1407440576, now seen corresponding path program 1 times [2024-11-09 18:34:48,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:34:48,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069609690] [2024-11-09 18:34:48,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:34:48,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:34:48,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:49,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 18:34:49,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:49,134 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-09 18:34:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:49,140 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 18:34:49,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:49,145 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-09 18:34:49,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:49,158 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-09 18:34:49,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:49,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-11-09 18:34:49,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:49,370 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2024-11-09 18:34:49,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:34:49,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069609690] [2024-11-09 18:34:49,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069609690] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:34:49,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98193012] [2024-11-09 18:34:49,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:34:49,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:34:49,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:34:49,373 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) [2024-11-09 18:34:49,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 18:34:50,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:50,135 INFO L255 TraceCheckSpWp]: Trace formula consists of 1254 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 18:34:50,140 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:34:50,368 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2024-11-09 18:34:50,368 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:34:50,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98193012] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:34:50,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:34:50,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-09 18:34:50,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605250965] [2024-11-09 18:34:50,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:34:50,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:34:50,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:34:50,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:34:50,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-09 18:34:50,370 INFO L87 Difference]: Start difference. First operand 4001 states and 6359 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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) [2024-11-09 18:34:50,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:34:50,430 INFO L93 Difference]: Finished difference Result 7787 states and 12451 transitions. [2024-11-09 18:34:50,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:34:50,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 287 [2024-11-09 18:34:50,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:34:50,455 INFO L225 Difference]: With dead ends: 7787 [2024-11-09 18:34:50,455 INFO L226 Difference]: Without dead ends: 7777 [2024-11-09 18:34:50,460 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-09 18:34:50,461 INFO L432 NwaCegarLoop]: 360 mSDtfsCounter, 36 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 717 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 [2024-11-09 18:34:50,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 717 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:34:50,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7777 states. [2024-11-09 18:34:50,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7777 to 7777. [2024-11-09 18:34:50,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7777 states, 7743 states have (on average 1.599767531964355) internal successors, (12387), 7747 states have internal predecessors, (12387), 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) [2024-11-09 18:34:50,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7777 states to 7777 states and 12439 transitions. [2024-11-09 18:34:50,618 INFO L78 Accepts]: Start accepts. Automaton has 7777 states and 12439 transitions. Word has length 287 [2024-11-09 18:34:50,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:34:50,620 INFO L471 AbstractCegarLoop]: Abstraction has 7777 states and 12439 transitions. [2024-11-09 18:34:50,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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) [2024-11-09 18:34:50,620 INFO L276 IsEmpty]: Start isEmpty. Operand 7777 states and 12439 transitions. [2024-11-09 18:34:50,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2024-11-09 18:34:50,636 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:34:50,637 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2024-11-09 18:34:50,663 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-09 18:34:50,837 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 [2024-11-09 18:34:50,838 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:34:50,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:34:50,838 INFO L85 PathProgramCache]: Analyzing trace with hash -2087389806, now seen corresponding path program 1 times [2024-11-09 18:34:50,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:34:50,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634796867] [2024-11-09 18:34:50,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:34:50,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:34:51,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:51,226 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 18:34:51,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:51,248 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-09 18:34:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:51,253 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 18:34:51,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:51,258 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-09 18:34:51,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:51,268 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-09 18:34:51,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:51,396 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-11-09 18:34:51,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:51,468 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2024-11-09 18:34:51,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:34:51,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634796867] [2024-11-09 18:34:51,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634796867] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:34:51,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651068530] [2024-11-09 18:34:51,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:34:51,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:34:51,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:34:51,473 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) [2024-11-09 18:34:51,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 18:34:52,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:52,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 18:34:52,325 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:34:52,579 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2024-11-09 18:34:52,579 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:34:52,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651068530] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:34:52,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:34:52,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-09 18:34:52,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362001798] [2024-11-09 18:34:52,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:34:52,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:34:52,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:34:52,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:34:52,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-09 18:34:52,581 INFO L87 Difference]: Start difference. First operand 7777 states and 12439 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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) [2024-11-09 18:34:52,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:34:52,657 INFO L93 Difference]: Finished difference Result 15339 states and 24611 transitions. [2024-11-09 18:34:52,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:34:52,657 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 332 [2024-11-09 18:34:52,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:34:52,713 INFO L225 Difference]: With dead ends: 15339 [2024-11-09 18:34:52,714 INFO L226 Difference]: Without dead ends: 15329 [2024-11-09 18:34:52,723 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-09 18:34:52,723 INFO L432 NwaCegarLoop]: 360 mSDtfsCounter, 35 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 717 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 [2024-11-09 18:34:52,724 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 717 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:34:52,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15329 states. [2024-11-09 18:34:52,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15329 to 15329. [2024-11-09 18:34:52,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15329 states, 15295 states have (on average 1.604903563255966) internal successors, (24547), 15299 states have internal predecessors, (24547), 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) [2024-11-09 18:34:53,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15329 states to 15329 states and 24599 transitions. [2024-11-09 18:34:53,034 INFO L78 Accepts]: Start accepts. Automaton has 15329 states and 24599 transitions. Word has length 332 [2024-11-09 18:34:53,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:34:53,035 INFO L471 AbstractCegarLoop]: Abstraction has 15329 states and 24599 transitions. [2024-11-09 18:34:53,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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) [2024-11-09 18:34:53,036 INFO L276 IsEmpty]: Start isEmpty. Operand 15329 states and 24599 transitions. [2024-11-09 18:34:53,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2024-11-09 18:34:53,063 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:34:53,064 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:34:53,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-09 18:34:53,264 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 [2024-11-09 18:34:53,265 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:34:53,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:34:53,266 INFO L85 PathProgramCache]: Analyzing trace with hash 227501918, now seen corresponding path program 1 times [2024-11-09 18:34:53,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:34:53,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233842009] [2024-11-09 18:34:53,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:34:53,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:34:53,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:53,754 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 18:34:53,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:53,773 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-09 18:34:53,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:53,778 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 18:34:53,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:53,783 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-09 18:34:53,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:53,796 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-09 18:34:53,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:53,864 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-11-09 18:34:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:53,960 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-09 18:34:53,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:34:53,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233842009] [2024-11-09 18:34:53,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233842009] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:34:53,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662798989] [2024-11-09 18:34:53,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:34:53,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:34:53,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:34:53,963 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) [2024-11-09 18:34:53,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 18:34:54,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:34:54,847 INFO L255 TraceCheckSpWp]: Trace formula consists of 1557 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 18:34:54,852 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:34:54,899 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 795 trivial. 0 not checked. [2024-11-09 18:34:54,899 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:34:54,993 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 795 trivial. 0 not checked. [2024-11-09 18:34:54,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662798989] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:34:54,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:34:54,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2024-11-09 18:34:54,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771902465] [2024-11-09 18:34:54,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:34:54,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 18:34:54,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:34:54,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 18:34:54,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-09 18:34:54,995 INFO L87 Difference]: Start difference. First operand 15329 states and 24599 transitions. Second operand has 11 states, 11 states have (on average 14.454545454545455) internal successors, (159), 9 states have internal predecessors, (159), 1 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-09 18:35:00,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:35:00,639 INFO L93 Difference]: Finished difference Result 30660 states and 49207 transitions. [2024-11-09 18:35:00,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 18:35:00,639 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.454545454545455) internal successors, (159), 9 states have internal predecessors, (159), 1 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 391 [2024-11-09 18:35:00,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:35:00,738 INFO L225 Difference]: With dead ends: 30660 [2024-11-09 18:35:00,739 INFO L226 Difference]: Without dead ends: 15337 [2024-11-09 18:35:00,749 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 801 GetRequests, 789 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-09 18:35:00,750 INFO L432 NwaCegarLoop]: 325 mSDtfsCounter, 66 mSDsluCounter, 1969 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 2294 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-11-09 18:35:00,750 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 2294 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2024-11-09 18:35:00,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15337 states. [2024-11-09 18:35:00,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15337 to 15337. [2024-11-09 18:35:00,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15337 states, 15303 states have (on average 1.6045873358165066) internal successors, (24555), 15307 states have internal predecessors, (24555), 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) [2024-11-09 18:35:01,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15337 states to 15337 states and 24607 transitions. [2024-11-09 18:35:01,020 INFO L78 Accepts]: Start accepts. Automaton has 15337 states and 24607 transitions. Word has length 391 [2024-11-09 18:35:01,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:35:01,020 INFO L471 AbstractCegarLoop]: Abstraction has 15337 states and 24607 transitions. [2024-11-09 18:35:01,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.454545454545455) internal successors, (159), 9 states have internal predecessors, (159), 1 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-09 18:35:01,020 INFO L276 IsEmpty]: Start isEmpty. Operand 15337 states and 24607 transitions. [2024-11-09 18:35:01,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2024-11-09 18:35:01,048 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:35:01,048 INFO L215 NwaCegarLoop]: trace histogram [12, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 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, 4, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 18:35:01,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-09 18:35:01,249 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 [2024-11-09 18:35:01,249 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:35:01,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:35:01,250 INFO L85 PathProgramCache]: Analyzing trace with hash -300263423, now seen corresponding path program 2 times [2024-11-09 18:35:01,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:35:01,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706131782] [2024-11-09 18:35:01,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:35:01,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:35:01,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:35:01,659 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-09 18:35:01,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:35:01,664 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-09 18:35:01,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:35:01,668 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-09 18:35:01,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:35:01,673 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-09 18:35:01,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:35:01,682 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-09 18:35:01,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:35:01,755 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-11-09 18:35:01,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:35:01,830 INFO L134 CoverageAnalysis]: Checked inductivity of 891 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 889 trivial. 0 not checked. [2024-11-09 18:35:01,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:35:01,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706131782] [2024-11-09 18:35:01,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706131782] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:35:01,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997660238] [2024-11-09 18:35:01,831 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:35:01,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:35:01,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:35:01,834 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) [2024-11-09 18:35:01,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-09 18:35:04,686 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:35:04,686 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:35:04,695 INFO L255 TraceCheckSpWp]: Trace formula consists of 1669 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 18:35:04,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:35:04,748 INFO L134 CoverageAnalysis]: Checked inductivity of 891 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 871 trivial. 0 not checked. [2024-11-09 18:35:04,748 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:35:04,823 INFO L134 CoverageAnalysis]: Checked inductivity of 891 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 871 trivial. 0 not checked. [2024-11-09 18:35:04,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997660238] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:35:04,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:35:04,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 16 [2024-11-09 18:35:04,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143584265] [2024-11-09 18:35:04,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:35:04,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 18:35:04,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:35:04,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 18:35:04,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2024-11-09 18:35:04,825 INFO L87 Difference]: Start difference. First operand 15337 states and 24607 transitions. Second operand has 16 states, 16 states have (on average 11.0625) internal successors, (177), 14 states have internal predecessors, (177), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-09 18:35:10,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:35:10,928 INFO L93 Difference]: Finished difference Result 30688 states and 49238 transitions. [2024-11-09 18:35:10,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 18:35:10,928 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.0625) internal successors, (177), 14 states have internal predecessors, (177), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 405 [2024-11-09 18:35:10,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:35:10,949 INFO L225 Difference]: With dead ends: 30688 [2024-11-09 18:35:10,949 INFO L226 Difference]: Without dead ends: 15363 [2024-11-09 18:35:10,969 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 826 GetRequests, 811 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2024-11-09 18:35:10,969 INFO L432 NwaCegarLoop]: 320 mSDtfsCounter, 74 mSDsluCounter, 2515 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 2835 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:35:10,969 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 2835 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2024-11-09 18:35:10,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15363 states. [2024-11-09 18:35:11,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15363 to 15357. [2024-11-09 18:35:11,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15357 states, 15322 states have (on average 1.6039028847408954) internal successors, (24575), 15326 states have internal predecessors, (24575), 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) [2024-11-09 18:35:11,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15357 states to 15357 states and 24629 transitions. [2024-11-09 18:35:11,153 INFO L78 Accepts]: Start accepts. Automaton has 15357 states and 24629 transitions. Word has length 405 [2024-11-09 18:35:11,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:35:11,153 INFO L471 AbstractCegarLoop]: Abstraction has 15357 states and 24629 transitions. [2024-11-09 18:35:11,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.0625) internal successors, (177), 14 states have internal predecessors, (177), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-09 18:35:11,154 INFO L276 IsEmpty]: Start isEmpty. Operand 15357 states and 24629 transitions. [2024-11-09 18:35:11,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2024-11-09 18:35:11,175 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:35:11,175 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 10, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2024-11-09 18:35:11,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-09 18:35:11,375 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 [2024-11-09 18:35:11,376 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:35:11,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:35:11,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1365309679, now seen corresponding path program 3 times [2024-11-09 18:35:11,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:35:11,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336104397] [2024-11-09 18:35:11,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:35:11,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:35:11,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:35:11,718 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 18:35:11,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:35:11,723 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-09 18:35:11,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:35:11,728 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-09 18:35:11,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:35:11,733 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-09 18:35:11,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:35:11,741 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-09 18:35:11,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:35:11,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-11-09 18:35:11,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:35:11,928 INFO L134 CoverageAnalysis]: Checked inductivity of 987 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 985 trivial. 0 not checked. [2024-11-09 18:35:11,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:35:11,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336104397] [2024-11-09 18:35:11,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336104397] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:35:11,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92810623] [2024-11-09 18:35:11,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:35:11,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:35:11,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:35:11,931 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) [2024-11-09 18:35:11,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-09 18:35:18,149 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 18:35:18,149 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:35:18,158 INFO L255 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-09 18:35:18,170 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:35:19,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 520 treesize of output 19 [2024-11-09 18:35:19,465 INFO L134 CoverageAnalysis]: Checked inductivity of 987 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 985 trivial. 0 not checked. [2024-11-09 18:35:19,465 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:35:19,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92810623] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:35:19,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:35:19,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-11-09 18:35:19,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68788513] [2024-11-09 18:35:19,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:35:19,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 18:35:19,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:35:19,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 18:35:19,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-09 18:35:19,468 INFO L87 Difference]: Start difference. First operand 15357 states and 24629 transitions. Second operand has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 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) [2024-11-09 18:35:21,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 18:35:22,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 18:35:24,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 18:35:26,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:35:26,849 INFO L93 Difference]: Finished difference Result 30633 states and 49169 transitions. [2024-11-09 18:35:26,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 18:35:26,849 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 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 421 [2024-11-09 18:35:26,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:35:26,876 INFO L225 Difference]: With dead ends: 30633 [2024-11-09 18:35:26,877 INFO L226 Difference]: Without dead ends: 15506 [2024-11-09 18:35:26,896 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 427 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-09 18:35:26,898 INFO L432 NwaCegarLoop]: 329 mSDtfsCounter, 248 mSDsluCounter, 1326 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 1655 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:35:26,898 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 1655 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2024-11-09 18:35:26,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15506 states. [2024-11-09 18:35:27,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15506 to 15446. [2024-11-09 18:35:27,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15446 states, 15397 states have (on average 1.6020003896863024) internal successors, (24666), 15405 states have internal predecessors, (24666), 41 states have call successors, (41), 7 states have call predecessors, (41), 7 states have return successors, (41), 35 states have call predecessors, (41), 41 states have call successors, (41) [2024-11-09 18:35:27,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15446 states to 15446 states and 24748 transitions. [2024-11-09 18:35:27,112 INFO L78 Accepts]: Start accepts. Automaton has 15446 states and 24748 transitions. Word has length 421 [2024-11-09 18:35:27,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:35:27,113 INFO L471 AbstractCegarLoop]: Abstraction has 15446 states and 24748 transitions. [2024-11-09 18:35:27,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 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) [2024-11-09 18:35:27,113 INFO L276 IsEmpty]: Start isEmpty. Operand 15446 states and 24748 transitions. [2024-11-09 18:35:27,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2024-11-09 18:35:27,129 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:35:27,129 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 10, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2024-11-09 18:35:27,150 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-09 18:35:27,329 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 [2024-11-09 18:35:27,330 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:35:27,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:35:27,330 INFO L85 PathProgramCache]: Analyzing trace with hash -582342966, now seen corresponding path program 1 times [2024-11-09 18:35:27,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:35:27,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617793467] [2024-11-09 18:35:27,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:35:27,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:35:27,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:35:27,696 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 18:35:27,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:35:27,700 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-09 18:35:27,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:35:27,704 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-09 18:35:27,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:35:27,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-09 18:35:27,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:35:27,718 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-09 18:35:27,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:35:27,899 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-11-09 18:35:27,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:35:27,989 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-11-09 18:35:27,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:35:28,002 INFO L134 CoverageAnalysis]: Checked inductivity of 989 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 987 trivial. 0 not checked. [2024-11-09 18:35:28,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:35:28,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617793467] [2024-11-09 18:35:28,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617793467] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:35:28,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934073972] [2024-11-09 18:35:28,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:35:28,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:35:28,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:35:28,004 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) [2024-11-09 18:35:28,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-09 18:35:29,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:35:29,019 INFO L255 TraceCheckSpWp]: Trace formula consists of 1950 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 18:35:29,025 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:35:29,169 INFO L134 CoverageAnalysis]: Checked inductivity of 989 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 879 trivial. 0 not checked. [2024-11-09 18:35:29,169 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:35:29,387 INFO L134 CoverageAnalysis]: Checked inductivity of 989 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 879 trivial. 0 not checked. [2024-11-09 18:35:29,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934073972] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:35:29,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:35:29,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13, 13] total 21 [2024-11-09 18:35:29,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921780512] [2024-11-09 18:35:29,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:35:29,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 18:35:29,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:35:29,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 18:35:29,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2024-11-09 18:35:29,390 INFO L87 Difference]: Start difference. First operand 15446 states and 24748 transitions. Second operand has 21 states, 21 states have (on average 10.19047619047619) internal successors, (214), 18 states have internal predecessors, (214), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-09 18:35:31,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 18:35:37,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 18:35:39,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 18:35:40,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:35:40,710 INFO L93 Difference]: Finished difference Result 30890 states and 49502 transitions. [2024-11-09 18:35:40,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-09 18:35:40,710 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 10.19047619047619) internal successors, (214), 18 states have internal predecessors, (214), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 443 [2024-11-09 18:35:40,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:35:40,730 INFO L225 Difference]: With dead ends: 30890 [2024-11-09 18:35:40,731 INFO L226 Difference]: Without dead ends: 15468 [2024-11-09 18:35:40,746 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 905 GetRequests, 876 SyntacticMatches, 8 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2024-11-09 18:35:40,747 INFO L432 NwaCegarLoop]: 323 mSDtfsCounter, 75 mSDsluCounter, 3322 mSDsCounter, 0 mSdLazyCounter, 979 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 3645 SdHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:35:40,748 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 3645 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 979 Invalid, 0 Unknown, 0 Unchecked, 11.2s Time] [2024-11-09 18:35:40,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15468 states. [2024-11-09 18:35:40,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15468 to 15462. [2024-11-09 18:35:40,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15462 states, 15412 states have (on average 1.6014793667272256) internal successors, (24682), 15420 states have internal predecessors, (24682), 42 states have call successors, (42), 7 states have call predecessors, (42), 7 states have return successors, (42), 36 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-09 18:35:40,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15462 states to 15462 states and 24766 transitions. [2024-11-09 18:35:40,913 INFO L78 Accepts]: Start accepts. Automaton has 15462 states and 24766 transitions. Word has length 443 [2024-11-09 18:35:40,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:35:40,913 INFO L471 AbstractCegarLoop]: Abstraction has 15462 states and 24766 transitions. [2024-11-09 18:35:40,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 10.19047619047619) internal successors, (214), 18 states have internal predecessors, (214), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-09 18:35:40,914 INFO L276 IsEmpty]: Start isEmpty. Operand 15462 states and 24766 transitions. [2024-11-09 18:35:40,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2024-11-09 18:35:40,930 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:35:40,930 INFO L215 NwaCegarLoop]: trace histogram [15, 14, 12, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:35:40,948 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-09 18:35:41,130 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 [2024-11-09 18:35:41,131 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:35:41,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:35:41,131 INFO L85 PathProgramCache]: Analyzing trace with hash 281056934, now seen corresponding path program 2 times [2024-11-09 18:35:41,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:35:41,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944703376] [2024-11-09 18:35:41,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:35:41,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:35:41,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:35:41,552 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-09 18:35:41,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:35:41,556 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-09 18:35:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:35:41,560 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-09 18:35:41,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:35:41,565 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-09 18:35:41,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:35:41,573 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-11-09 18:35:41,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:35:41,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-11-09 18:35:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:35:41,721 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-11-09 18:35:41,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:35:41,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1095 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1093 trivial. 0 not checked. [2024-11-09 18:35:41,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:35:41,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944703376] [2024-11-09 18:35:41,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944703376] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:35:41,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154711267] [2024-11-09 18:35:41,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:35:41,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:35:41,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:35:41,737 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) [2024-11-09 18:35:41,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-09 18:35:43,979 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:35:43,979 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:35:43,991 INFO L255 TraceCheckSpWp]: Trace formula consists of 2019 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 18:35:43,996 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:35:44,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1095 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 1084 trivial. 0 not checked. [2024-11-09 18:35:44,032 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:35:44,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1095 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1087 trivial. 0 not checked. [2024-11-09 18:35:44,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154711267] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:35:44,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:35:44,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 13 [2024-11-09 18:35:44,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046826667] [2024-11-09 18:35:44,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:35:44,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 18:35:44,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:35:44,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 18:35:44,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-09 18:35:44,097 INFO L87 Difference]: Start difference. First operand 15462 states and 24766 transitions. Second operand has 13 states, 13 states have (on average 15.076923076923077) internal successors, (196), 10 states have internal predecessors, (196), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-09 18:35:48,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:35:48,684 INFO L93 Difference]: Finished difference Result 30901 states and 49515 transitions. [2024-11-09 18:35:48,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 18:35:48,687 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 15.076923076923077) internal successors, (196), 10 states have internal predecessors, (196), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 455 [2024-11-09 18:35:48,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:35:48,712 INFO L225 Difference]: With dead ends: 30901 [2024-11-09 18:35:48,712 INFO L226 Difference]: Without dead ends: 15508 [2024-11-09 18:35:48,730 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 929 GetRequests, 916 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-11-09 18:35:48,730 INFO L432 NwaCegarLoop]: 319 mSDtfsCounter, 117 mSDsluCounter, 1639 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 1958 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-09 18:35:48,731 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 1958 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-09 18:35:48,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15508 states. [2024-11-09 18:35:48,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15508 to 15502. [2024-11-09 18:35:48,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15502 states, 15447 states have (on average 1.600440214928465) internal successors, (24722), 15455 states have internal predecessors, (24722), 47 states have call successors, (47), 7 states have call predecessors, (47), 7 states have return successors, (47), 41 states have call predecessors, (47), 47 states have call successors, (47) [2024-11-09 18:35:48,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15502 states to 15502 states and 24816 transitions. [2024-11-09 18:35:48,959 INFO L78 Accepts]: Start accepts. Automaton has 15502 states and 24816 transitions. Word has length 455 [2024-11-09 18:35:48,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:35:48,959 INFO L471 AbstractCegarLoop]: Abstraction has 15502 states and 24816 transitions. [2024-11-09 18:35:48,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.076923076923077) internal successors, (196), 10 states have internal predecessors, (196), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-09 18:35:48,960 INFO L276 IsEmpty]: Start isEmpty. Operand 15502 states and 24816 transitions. [2024-11-09 18:35:48,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2024-11-09 18:35:48,980 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:35:48,980 INFO L215 NwaCegarLoop]: trace histogram [15, 14, 12, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 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, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:35:49,008 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-09 18:35:49,180 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 [2024-11-09 18:35:49,181 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:35:49,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:35:49,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1175198766, now seen corresponding path program 3 times [2024-11-09 18:35:49,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:35:49,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407155192] [2024-11-09 18:35:49,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:35:49,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:35:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:35:49,860 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-09 18:35:49,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:35:49,868 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-09 18:35:49,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:35:49,876 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-09 18:35:49,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:35:49,881 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-09 18:35:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:35:49,896 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-11-09 18:35:49,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:35:49,985 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-11-09 18:35:50,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:35:50,096 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-11-09 18:35:50,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:35:50,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1165 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1163 trivial. 0 not checked. [2024-11-09 18:35:50,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:35:50,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407155192] [2024-11-09 18:35:50,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407155192] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:35:50,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668550681] [2024-11-09 18:35:50,108 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:35:50,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:35:50,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:35:50,110 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) [2024-11-09 18:35:50,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process