./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 3289d67d 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-3289d67-m [2024-11-16 03:03:01,599 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 03:03:01,653 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 03:03:01,658 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 03:03:01,658 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 03:03:01,690 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 03:03:01,698 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 03:03:01,699 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 03:03:01,699 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 03:03:01,700 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 03:03:01,700 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 03:03:01,701 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 03:03:01,701 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 03:03:01,703 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 03:03:01,703 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 03:03:01,703 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 03:03:01,703 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 03:03:01,704 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 03:03:01,704 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 03:03:01,704 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 03:03:01,705 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 03:03:01,707 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 03:03:01,707 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 03:03:01,707 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 03:03:01,707 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 03:03:01,707 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 03:03:01,707 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 03:03:01,708 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 03:03:01,708 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 03:03:01,708 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 03:03:01,708 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 03:03:01,708 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 03:03:01,708 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 03:03:01,709 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 03:03:01,709 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 03:03:01,709 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 03:03:01,709 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 03:03:01,709 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 03:03:01,709 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 03:03:01,709 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 03:03:01,709 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 03:03:01,710 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 03:03:01,711 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 15b0cbd6c91287c392a1dcce1e0a32a1c72d5f0acdee848dea776c36b74cf850 [2024-11-16 03:03:01,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 03:03:01,910 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 03:03:01,912 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 03:03:01,915 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 03:03:01,915 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 03:03:01,916 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memory-model/4SB.i [2024-11-16 03:03:03,054 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 03:03:03,246 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 03:03:03,247 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memory-model/4SB.i [2024-11-16 03:03:03,262 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b05ec6dd/aca9eaece0024c7eb5b92855c3dd8f27/FLAG2ebc9c5c6 [2024-11-16 03:03:03,627 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b05ec6dd/aca9eaece0024c7eb5b92855c3dd8f27 [2024-11-16 03:03:03,629 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 03:03:03,630 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 03:03:03,632 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 03:03:03,632 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 03:03:03,636 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 03:03:03,636 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:03:03" (1/1) ... [2024-11-16 03:03:03,637 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@377b89b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:03:03, skipping insertion in model container [2024-11-16 03:03:03,637 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:03:03" (1/1) ... [2024-11-16 03:03:03,672 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 03:03:03,913 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] [2024-11-16 03:03:03,917 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 03:03:03,926 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 03:03:04,037 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] [2024-11-16 03:03:04,038 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 03:03:04,080 INFO L204 MainTranslator]: Completed translation [2024-11-16 03:03:04,080 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:03:04 WrapperNode [2024-11-16 03:03:04,081 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 03:03:04,081 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 03:03:04,081 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 03:03:04,082 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 03:03:04,086 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:03:04" (1/1) ... [2024-11-16 03:03:04,133 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:03:04" (1/1) ... [2024-11-16 03:03:04,198 INFO L138 Inliner]: procedures = 27, calls = 680, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 1631 [2024-11-16 03:03:04,199 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 03:03:04,199 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 03:03:04,199 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 03:03:04,200 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 03:03:04,207 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:03:04" (1/1) ... [2024-11-16 03:03:04,208 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:03:04" (1/1) ... [2024-11-16 03:03:04,220 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:03:04" (1/1) ... [2024-11-16 03:03:04,260 INFO L175 MemorySlicer]: Split 488 memory accesses to 16 slices as follows [96, 10, 45, 12, 13, 11, 12, 3, 60, 13, 13, 152, 15, 13, 10, 10]. 31 percent of accesses are in the largest equivalence class. The 36 initializations are split as follows [0, 0, 0, 10, 5, 0, 5, 0, 0, 5, 5, 0, 0, 5, 1, 0]. The 171 writes are split as follows [20, 5, 15, 1, 2, 5, 2, 2, 20, 2, 2, 80, 5, 2, 3, 5]. [2024-11-16 03:03:04,260 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:03:04" (1/1) ... [2024-11-16 03:03:04,261 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:03:04" (1/1) ... [2024-11-16 03:03:04,305 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:03:04" (1/1) ... [2024-11-16 03:03:04,309 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:03:04" (1/1) ... [2024-11-16 03:03:04,316 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:03:04" (1/1) ... [2024-11-16 03:03:04,320 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:03:04" (1/1) ... [2024-11-16 03:03:04,332 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 03:03:04,333 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 03:03:04,334 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 03:03:04,334 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 03:03:04,335 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:03:04" (1/1) ... [2024-11-16 03:03:04,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 03:03:04,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:03:04,361 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) [2024-11-16 03:03:04,363 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 [2024-11-16 03:03:04,401 INFO L130 BoogieDeclarations]: Found specification of procedure store_buffering_4_conditions [2024-11-16 03:03:04,401 INFO L138 BoogieDeclarations]: Found implementation of procedure store_buffering_4_conditions [2024-11-16 03:03:04,401 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_write [2024-11-16 03:03:04,402 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_write [2024-11-16 03:03:04,402 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_headerT [2024-11-16 03:03:04,402 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_nondet_headerT [2024-11-16 03:03:04,402 INFO L130 BoogieDeclarations]: Found specification of procedure stepWriteBuffer [2024-11-16 03:03:04,403 INFO L138 BoogieDeclarations]: Found implementation of procedure stepWriteBuffer [2024-11-16 03:03:04,403 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_read [2024-11-16 03:03:04,403 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_read [2024-11-16 03:03:04,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 03:03:04,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 03:03:04,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 03:03:04,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 03:03:04,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-16 03:03:04,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-16 03:03:04,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-16 03:03:04,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-16 03:03:04,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-16 03:03:04,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-16 03:03:04,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-16 03:03:04,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-16 03:03:04,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-16 03:03:04,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-16 03:03:04,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-11-16 03:03:04,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2024-11-16 03:03:04,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2024-11-16 03:03:04,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 03:03:04,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 03:03:04,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 03:03:04,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-16 03:03:04,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-16 03:03:04,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-16 03:03:04,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-16 03:03:04,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-16 03:03:04,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-16 03:03:04,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-16 03:03:04,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-16 03:03:04,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-16 03:03:04,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-16 03:03:04,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-11-16 03:03:04,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2024-11-16 03:03:04,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2024-11-16 03:03:04,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 03:03:04,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 03:03:04,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 03:03:04,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-16 03:03:04,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-16 03:03:04,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-16 03:03:04,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-16 03:03:04,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-16 03:03:04,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-16 03:03:04,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-16 03:03:04,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-16 03:03:04,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-16 03:03:04,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-16 03:03:04,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-16 03:03:04,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-16 03:03:04,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-16 03:03:04,410 INFO L130 BoogieDeclarations]: Found specification of procedure initWriteBuffer [2024-11-16 03:03:04,410 INFO L138 BoogieDeclarations]: Found implementation of procedure initWriteBuffer [2024-11-16 03:03:04,410 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_fence [2024-11-16 03:03:04,410 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_fence [2024-11-16 03:03:04,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 03:03:04,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 03:03:04,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 03:03:04,598 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 03:03:04,599 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 03:03:05,391 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L62: havoc __VERIFIER_nondet_operations_#t~nondet1#1; [2024-11-16 03:03:05,392 INFO L1250 $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; [2024-11-16 03:03:05,880 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L59: havoc __VERIFIER_nondet_step_#t~nondet0#1; [2024-11-16 03:03:05,881 INFO L1250 $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; [2024-11-16 03:03:05,934 INFO L? ?]: Removed 214 outVars from TransFormulas that were not future-live. [2024-11-16 03:03:05,934 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 03:03:05,951 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 03:03:05,953 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 03:03:05,953 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 03:03:05 BoogieIcfgContainer [2024-11-16 03:03:05,953 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 03:03:05,955 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 03:03:05,955 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 03:03:05,957 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 03:03:05,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 03:03:03" (1/3) ... [2024-11-16 03:03:05,958 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d4463f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:03:05, skipping insertion in model container [2024-11-16 03:03:05,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:03:04" (2/3) ... [2024-11-16 03:03:05,959 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d4463f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:03:05, skipping insertion in model container [2024-11-16 03:03:05,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 03:03:05" (3/3) ... [2024-11-16 03:03:05,960 INFO L112 eAbstractionObserver]: Analyzing ICFG 4SB.i [2024-11-16 03:03:05,973 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 03:03:05,973 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 03:03:06,025 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 03:03:06,031 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;@4c9a90, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 03:03:06,033 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 03:03:06,039 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) [2024-11-16 03:03:06,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-16 03:03:06,049 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:03:06,049 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] [2024-11-16 03:03:06,050 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:03:06,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:03:06,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1770782883, now seen corresponding path program 1 times [2024-11-16 03:03:06,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:03:06,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312640699] [2024-11-16 03:03:06,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:03:06,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:03:06,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:06,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-16 03:03:06,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:06,635 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 03:03:06,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:06,645 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 03:03:06,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:06,653 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-16 03:03:06,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:06,665 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-16 03:03:06,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:06,777 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-16 03:03:06,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:06,857 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-16 03:03:06,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:03:06,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312640699] [2024-11-16 03:03:06,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312640699] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:03:06,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:03:06,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 03:03:06,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076318861] [2024-11-16 03:03:06,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:03:06,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 03:03:06,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:03:06,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 03:03:06,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:03:06,883 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) [2024-11-16 03:03:09,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:03:09,090 INFO L93 Difference]: Finished difference Result 573 states and 901 transitions. [2024-11-16 03:03:09,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 03:03:09,093 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 [2024-11-16 03:03:09,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:03:09,103 INFO L225 Difference]: With dead ends: 573 [2024-11-16 03:03:09,104 INFO L226 Difference]: Without dead ends: 275 [2024-11-16 03:03:09,108 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 [2024-11-16 03:03:09,110 INFO L432 NwaCegarLoop]: 355 mSDtfsCounter, 67 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s 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, 2.1s IncrementalHoareTripleChecker+Time [2024-11-16 03:03:09,112 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 904 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-16 03:03:09,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2024-11-16 03:03:09,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 272. [2024-11-16 03:03:09,150 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) [2024-11-16 03:03:09,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 363 transitions. [2024-11-16 03:03:09,155 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 363 transitions. Word has length 74 [2024-11-16 03:03:09,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:03:09,155 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 363 transitions. [2024-11-16 03:03:09,155 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) [2024-11-16 03:03:09,155 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 363 transitions. [2024-11-16 03:03:09,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-16 03:03:09,159 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:03:09,159 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] [2024-11-16 03:03:09,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 03:03:09,159 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:03:09,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:03:09,160 INFO L85 PathProgramCache]: Analyzing trace with hash 422461651, now seen corresponding path program 1 times [2024-11-16 03:03:09,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:03:09,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308192364] [2024-11-16 03:03:09,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:03:09,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:03:09,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:09,423 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 03:03:09,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:09,435 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-16 03:03:09,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:09,439 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-16 03:03:09,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:09,444 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-16 03:03:09,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:09,452 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-16 03:03:09,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:09,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-11-16 03:03:09,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:09,585 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-16 03:03:09,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:03:09,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308192364] [2024-11-16 03:03:09,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308192364] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:03:09,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509376912] [2024-11-16 03:03:09,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:03:09,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:03:09,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:03:09,588 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) [2024-11-16 03:03:09,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 03:03:09,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:09,925 INFO L255 TraceCheckSpWp]: Trace formula consists of 642 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 03:03:09,932 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:03:09,956 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-16 03:03:09,956 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:03:09,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509376912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:03:09,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:03:09,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-16 03:03:09,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477813641] [2024-11-16 03:03:09,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:03:09,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:03:09,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:03:09,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:03:09,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 03:03:09,959 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) [2024-11-16 03:03:09,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:03:09,976 INFO L93 Difference]: Finished difference Result 275 states and 365 transitions. [2024-11-16 03:03:09,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:03:09,977 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 [2024-11-16 03:03:09,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:03:09,978 INFO L225 Difference]: With dead ends: 275 [2024-11-16 03:03:09,981 INFO L226 Difference]: Without dead ends: 272 [2024-11-16 03:03:09,981 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 [2024-11-16 03:03:09,982 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 [2024-11-16 03:03:09,982 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] [2024-11-16 03:03:09,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-11-16 03:03:10,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2024-11-16 03:03:10,001 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) [2024-11-16 03:03:10,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 362 transitions. [2024-11-16 03:03:10,003 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 362 transitions. Word has length 85 [2024-11-16 03:03:10,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:03:10,004 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 362 transitions. [2024-11-16 03:03:10,004 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) [2024-11-16 03:03:10,004 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 362 transitions. [2024-11-16 03:03:10,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-16 03:03:10,006 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:03:10,006 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] [2024-11-16 03:03:10,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-16 03:03:10,210 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 [2024-11-16 03:03:10,211 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:03:10,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:03:10,212 INFO L85 PathProgramCache]: Analyzing trace with hash 422460690, now seen corresponding path program 1 times [2024-11-16 03:03:10,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:03:10,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097523359] [2024-11-16 03:03:10,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:03:10,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:03:10,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:10,475 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 03:03:10,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:10,489 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-16 03:03:10,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:10,492 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-16 03:03:10,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:10,500 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-16 03:03:10,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:10,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-16 03:03:10,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:10,599 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-11-16 03:03:10,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:10,655 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-16 03:03:10,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:03:10,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097523359] [2024-11-16 03:03:10,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097523359] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:03:10,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959136610] [2024-11-16 03:03:10,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:03:10,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:03:10,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:03:10,657 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) [2024-11-16 03:03:10,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 03:03:11,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:11,008 INFO L255 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 03:03:11,011 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:03:11,027 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-16 03:03:11,027 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:03:11,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959136610] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:03:11,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:03:11,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-16 03:03:11,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869657943] [2024-11-16 03:03:11,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:03:11,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:03:11,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:03:11,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:03:11,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 03:03:11,029 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) [2024-11-16 03:03:11,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:03:11,042 INFO L93 Difference]: Finished difference Result 542 states and 722 transitions. [2024-11-16 03:03:11,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:03:11,042 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 [2024-11-16 03:03:11,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:03:11,044 INFO L225 Difference]: With dead ends: 542 [2024-11-16 03:03:11,044 INFO L226 Difference]: Without dead ends: 274 [2024-11-16 03:03:11,045 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 [2024-11-16 03:03:11,045 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 [2024-11-16 03:03:11,046 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] [2024-11-16 03:03:11,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-11-16 03:03:11,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2024-11-16 03:03:11,055 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) [2024-11-16 03:03:11,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 364 transitions. [2024-11-16 03:03:11,056 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 364 transitions. Word has length 85 [2024-11-16 03:03:11,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:03:11,056 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 364 transitions. [2024-11-16 03:03:11,057 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) [2024-11-16 03:03:11,057 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 364 transitions. [2024-11-16 03:03:11,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-16 03:03:11,058 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:03:11,058 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] [2024-11-16 03:03:11,072 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 03:03:11,259 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 [2024-11-16 03:03:11,259 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:03:11,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:03:11,260 INFO L85 PathProgramCache]: Analyzing trace with hash -813165261, now seen corresponding path program 1 times [2024-11-16 03:03:11,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:03:11,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310831978] [2024-11-16 03:03:11,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:03:11,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:03:11,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:11,519 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 03:03:11,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:11,528 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-16 03:03:11,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:11,531 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-16 03:03:11,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:11,535 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-16 03:03:11,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:11,546 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-16 03:03:11,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:11,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-16 03:03:11,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:11,721 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-16 03:03:11,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:03:11,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310831978] [2024-11-16 03:03:11,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310831978] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:03:11,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290530520] [2024-11-16 03:03:11,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:03:11,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:03:11,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:03:11,724 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) [2024-11-16 03:03:11,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 03:03:12,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:12,076 INFO L255 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 03:03:12,078 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:03:12,087 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-16 03:03:12,087 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:03:12,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290530520] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:03:12,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:03:12,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 7 [2024-11-16 03:03:12,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965397905] [2024-11-16 03:03:12,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:03:12,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:03:12,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:03:12,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:03:12,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 03:03:12,089 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) [2024-11-16 03:03:12,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:03:12,105 INFO L93 Difference]: Finished difference Result 541 states and 724 transitions. [2024-11-16 03:03:12,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:03:12,106 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 [2024-11-16 03:03:12,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:03:12,107 INFO L225 Difference]: With dead ends: 541 [2024-11-16 03:03:12,107 INFO L226 Difference]: Without dead ends: 276 [2024-11-16 03:03:12,108 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 [2024-11-16 03:03:12,109 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 [2024-11-16 03:03:12,109 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] [2024-11-16 03:03:12,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2024-11-16 03:03:12,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2024-11-16 03:03:12,116 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) [2024-11-16 03:03:12,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 366 transitions. [2024-11-16 03:03:12,117 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 366 transitions. Word has length 87 [2024-11-16 03:03:12,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:03:12,117 INFO L471 AbstractCegarLoop]: Abstraction has 276 states and 366 transitions. [2024-11-16 03:03:12,118 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) [2024-11-16 03:03:12,118 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 366 transitions. [2024-11-16 03:03:12,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-16 03:03:12,119 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:03:12,119 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] [2024-11-16 03:03:12,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 03:03:12,319 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 [2024-11-16 03:03:12,320 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:03:12,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:03:12,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1705632525, now seen corresponding path program 1 times [2024-11-16 03:03:12,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:03:12,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908480269] [2024-11-16 03:03:12,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:03:12,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:03:12,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:12,529 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 03:03:12,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:12,566 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 03:03:12,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:12,570 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-16 03:03:12,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:12,574 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-16 03:03:12,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:12,583 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-16 03:03:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:12,641 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-16 03:03:12,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:12,714 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-16 03:03:12,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:03:12,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908480269] [2024-11-16 03:03:12,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908480269] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:03:12,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876204310] [2024-11-16 03:03:12,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:03:12,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:03:12,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:03:12,717 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) [2024-11-16 03:03:12,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 03:03:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:13,081 INFO L255 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 03:03:13,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:03:13,095 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-16 03:03:13,096 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:03:13,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876204310] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:03:13,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:03:13,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-16 03:03:13,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840870818] [2024-11-16 03:03:13,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:03:13,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:03:13,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:03:13,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:03:13,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-16 03:03:13,097 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) [2024-11-16 03:03:13,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:03:13,125 INFO L93 Difference]: Finished difference Result 529 states and 703 transitions. [2024-11-16 03:03:13,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:03:13,127 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 [2024-11-16 03:03:13,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:03:13,129 INFO L225 Difference]: With dead ends: 529 [2024-11-16 03:03:13,130 INFO L226 Difference]: Without dead ends: 284 [2024-11-16 03:03:13,130 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 [2024-11-16 03:03:13,131 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 [2024-11-16 03:03:13,134 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] [2024-11-16 03:03:13,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2024-11-16 03:03:13,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 278. [2024-11-16 03:03:13,143 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) [2024-11-16 03:03:13,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 368 transitions. [2024-11-16 03:03:13,146 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 368 transitions. Word has length 95 [2024-11-16 03:03:13,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:03:13,147 INFO L471 AbstractCegarLoop]: Abstraction has 278 states and 368 transitions. [2024-11-16 03:03:13,148 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) [2024-11-16 03:03:13,148 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 368 transitions. [2024-11-16 03:03:13,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-16 03:03:13,150 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:03:13,150 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] [2024-11-16 03:03:13,170 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 03:03:13,351 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 [2024-11-16 03:03:13,351 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:03:13,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:03:13,351 INFO L85 PathProgramCache]: Analyzing trace with hash 658088283, now seen corresponding path program 1 times [2024-11-16 03:03:13,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:03:13,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465491018] [2024-11-16 03:03:13,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:03:13,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:03:13,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:13,584 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 03:03:13,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:13,604 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 03:03:13,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:13,609 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-16 03:03:13,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:13,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-16 03:03:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:13,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-16 03:03:13,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:13,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-16 03:03:13,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:13,769 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-16 03:03:13,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:03:13,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465491018] [2024-11-16 03:03:13,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465491018] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:03:13,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889710737] [2024-11-16 03:03:13,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:03:13,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:03:13,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:03:13,772 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) [2024-11-16 03:03:13,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 03:03:14,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:14,153 INFO L255 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 03:03:14,155 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:03:14,169 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-16 03:03:14,169 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:03:14,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889710737] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:03:14,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:03:14,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-16 03:03:14,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111280725] [2024-11-16 03:03:14,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:03:14,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:03:14,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:03:14,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:03:14,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-16 03:03:14,170 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) [2024-11-16 03:03:14,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:03:14,203 INFO L93 Difference]: Finished difference Result 522 states and 693 transitions. [2024-11-16 03:03:14,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:03:14,204 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 [2024-11-16 03:03:14,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:03:14,206 INFO L225 Difference]: With dead ends: 522 [2024-11-16 03:03:14,206 INFO L226 Difference]: Without dead ends: 286 [2024-11-16 03:03:14,206 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 [2024-11-16 03:03:14,207 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 [2024-11-16 03:03:14,207 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] [2024-11-16 03:03:14,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2024-11-16 03:03:14,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 280. [2024-11-16 03:03:14,216 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) [2024-11-16 03:03:14,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 370 transitions. [2024-11-16 03:03:14,217 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 370 transitions. Word has length 99 [2024-11-16 03:03:14,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:03:14,217 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 370 transitions. [2024-11-16 03:03:14,218 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) [2024-11-16 03:03:14,218 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 370 transitions. [2024-11-16 03:03:14,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-16 03:03:14,219 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:03:14,219 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] [2024-11-16 03:03:14,237 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 03:03:14,423 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 [2024-11-16 03:03:14,424 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:03:14,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:03:14,424 INFO L85 PathProgramCache]: Analyzing trace with hash -441934413, now seen corresponding path program 1 times [2024-11-16 03:03:14,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:03:14,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458130634] [2024-11-16 03:03:14,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:03:14,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:03:14,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:14,609 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 03:03:14,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:14,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 03:03:14,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:14,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-16 03:03:14,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:14,634 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-16 03:03:14,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:14,642 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-16 03:03:14,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:14,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-16 03:03:14,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:14,760 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-16 03:03:14,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:03:14,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458130634] [2024-11-16 03:03:14,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458130634] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:03:14,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217096638] [2024-11-16 03:03:14,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:03:14,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:03:14,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:03:14,762 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) [2024-11-16 03:03:14,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 03:03:15,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:15,131 INFO L255 TraceCheckSpWp]: Trace formula consists of 735 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 03:03:15,133 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:03:15,146 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-11-16 03:03:15,147 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:03:15,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217096638] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:03:15,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:03:15,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-16 03:03:15,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604850871] [2024-11-16 03:03:15,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:03:15,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:03:15,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:03:15,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:03:15,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-16 03:03:15,148 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) [2024-11-16 03:03:15,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:03:15,174 INFO L93 Difference]: Finished difference Result 515 states and 683 transitions. [2024-11-16 03:03:15,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:03:15,175 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 [2024-11-16 03:03:15,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:03:15,176 INFO L225 Difference]: With dead ends: 515 [2024-11-16 03:03:15,176 INFO L226 Difference]: Without dead ends: 288 [2024-11-16 03:03:15,177 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 [2024-11-16 03:03:15,177 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 [2024-11-16 03:03:15,178 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] [2024-11-16 03:03:15,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-11-16 03:03:15,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 282. [2024-11-16 03:03:15,182 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) [2024-11-16 03:03:15,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 372 transitions. [2024-11-16 03:03:15,184 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 372 transitions. Word has length 103 [2024-11-16 03:03:15,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:03:15,184 INFO L471 AbstractCegarLoop]: Abstraction has 282 states and 372 transitions. [2024-11-16 03:03:15,184 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) [2024-11-16 03:03:15,184 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 372 transitions. [2024-11-16 03:03:15,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-16 03:03:15,185 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:03:15,185 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] [2024-11-16 03:03:15,199 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 03:03:15,389 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 [2024-11-16 03:03:15,390 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:03:15,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:03:15,390 INFO L85 PathProgramCache]: Analyzing trace with hash 295094299, now seen corresponding path program 1 times [2024-11-16 03:03:15,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:03:15,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215251821] [2024-11-16 03:03:15,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:03:15,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:03:15,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:15,586 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 03:03:15,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:15,603 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 03:03:15,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:15,608 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-16 03:03:15,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:15,611 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-16 03:03:15,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:15,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-16 03:03:15,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:15,741 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-11-16 03:03:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:15,809 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-16 03:03:15,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:03:15,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215251821] [2024-11-16 03:03:15,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215251821] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:03:15,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612162199] [2024-11-16 03:03:15,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:03:15,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:03:15,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:03:15,811 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) [2024-11-16 03:03:15,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 03:03:16,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:16,226 INFO L255 TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 03:03:16,228 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:03:16,243 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-16 03:03:16,243 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:03:16,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612162199] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:03:16,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:03:16,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-16 03:03:16,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648231672] [2024-11-16 03:03:16,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:03:16,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:03:16,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:03:16,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:03:16,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-16 03:03:16,245 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) [2024-11-16 03:03:16,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:03:16,271 INFO L93 Difference]: Finished difference Result 504 states and 670 transitions. [2024-11-16 03:03:16,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:03:16,272 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 [2024-11-16 03:03:16,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:03:16,273 INFO L225 Difference]: With dead ends: 504 [2024-11-16 03:03:16,273 INFO L226 Difference]: Without dead ends: 290 [2024-11-16 03:03:16,274 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 [2024-11-16 03:03:16,274 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 [2024-11-16 03:03:16,274 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] [2024-11-16 03:03:16,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2024-11-16 03:03:16,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 284. [2024-11-16 03:03:16,280 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) [2024-11-16 03:03:16,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 374 transitions. [2024-11-16 03:03:16,282 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 374 transitions. Word has length 107 [2024-11-16 03:03:16,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:03:16,282 INFO L471 AbstractCegarLoop]: Abstraction has 284 states and 374 transitions. [2024-11-16 03:03:16,283 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) [2024-11-16 03:03:16,283 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 374 transitions. [2024-11-16 03:03:16,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-16 03:03:16,284 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:03:16,284 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] [2024-11-16 03:03:16,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-16 03:03:16,484 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 [2024-11-16 03:03:16,485 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:03:16,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:03:16,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1038687859, now seen corresponding path program 1 times [2024-11-16 03:03:16,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:03:16,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077566093] [2024-11-16 03:03:16,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:03:16,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:03:16,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:16,671 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 03:03:16,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:16,688 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 03:03:16,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:16,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-16 03:03:16,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:16,696 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-16 03:03:16,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:16,704 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-16 03:03:16,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:16,775 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-11-16 03:03:16,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:16,833 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-16 03:03:16,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:03:16,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077566093] [2024-11-16 03:03:16,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077566093] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:03:16,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362455212] [2024-11-16 03:03:16,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:03:16,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:03:16,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:03:16,835 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) [2024-11-16 03:03:16,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 03:03:17,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:17,273 INFO L255 TraceCheckSpWp]: Trace formula consists of 745 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 03:03:17,275 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:03:17,286 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-11-16 03:03:17,286 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:03:17,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362455212] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:03:17,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:03:17,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-16 03:03:17,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103459565] [2024-11-16 03:03:17,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:03:17,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:03:17,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:03:17,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:03:17,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-16 03:03:17,287 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) [2024-11-16 03:03:17,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:03:17,372 INFO L93 Difference]: Finished difference Result 353 states and 481 transitions. [2024-11-16 03:03:17,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:03:17,372 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 [2024-11-16 03:03:17,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:03:17,374 INFO L225 Difference]: With dead ends: 353 [2024-11-16 03:03:17,374 INFO L226 Difference]: Without dead ends: 343 [2024-11-16 03:03:17,374 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 [2024-11-16 03:03:17,374 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 [2024-11-16 03:03:17,375 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] [2024-11-16 03:03:17,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2024-11-16 03:03:17,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 286. [2024-11-16 03:03:17,380 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) [2024-11-16 03:03:17,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 376 transitions. [2024-11-16 03:03:17,382 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 376 transitions. Word has length 111 [2024-11-16 03:03:17,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:03:17,382 INFO L471 AbstractCegarLoop]: Abstraction has 286 states and 376 transitions. [2024-11-16 03:03:17,382 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) [2024-11-16 03:03:17,382 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 376 transitions. [2024-11-16 03:03:17,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-16 03:03:17,384 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:03:17,384 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] [2024-11-16 03:03:17,398 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-16 03:03:17,584 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 [2024-11-16 03:03:17,585 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:03:17,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:03:17,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1009855898, now seen corresponding path program 1 times [2024-11-16 03:03:17,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:03:17,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042760978] [2024-11-16 03:03:17,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:03:17,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:03:17,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:17,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 03:03:17,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:17,837 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 03:03:17,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:17,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-16 03:03:17,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:17,845 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-16 03:03:17,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:17,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-16 03:03:17,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:17,917 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-11-16 03:03:17,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:18,003 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-16 03:03:18,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:03:18,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042760978] [2024-11-16 03:03:18,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042760978] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:03:18,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689836987] [2024-11-16 03:03:18,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:03:18,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:03:18,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:03:18,005 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) [2024-11-16 03:03:18,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 03:03:18,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:18,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 03:03:18,472 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:03:18,496 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-11-16 03:03:18,496 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:03:18,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689836987] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:03:18,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:03:18,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-16 03:03:18,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056269196] [2024-11-16 03:03:18,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:03:18,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:03:18,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:03:18,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:03:18,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-16 03:03:18,498 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) [2024-11-16 03:03:18,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:03:18,510 INFO L93 Difference]: Finished difference Result 355 states and 483 transitions. [2024-11-16 03:03:18,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:03:18,511 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 [2024-11-16 03:03:18,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:03:18,512 INFO L225 Difference]: With dead ends: 355 [2024-11-16 03:03:18,512 INFO L226 Difference]: Without dead ends: 345 [2024-11-16 03:03:18,513 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 [2024-11-16 03:03:18,513 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 [2024-11-16 03:03:18,513 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] [2024-11-16 03:03:18,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2024-11-16 03:03:18,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 343. [2024-11-16 03:03:18,520 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) [2024-11-16 03:03:18,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 469 transitions. [2024-11-16 03:03:18,521 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 469 transitions. Word has length 122 [2024-11-16 03:03:18,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:03:18,522 INFO L471 AbstractCegarLoop]: Abstraction has 343 states and 469 transitions. [2024-11-16 03:03:18,522 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) [2024-11-16 03:03:18,522 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 469 transitions. [2024-11-16 03:03:18,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-16 03:03:18,523 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:03:18,523 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] [2024-11-16 03:03:18,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-16 03:03:18,724 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 [2024-11-16 03:03:18,724 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:03:18,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:03:18,725 INFO L85 PathProgramCache]: Analyzing trace with hash -937213256, now seen corresponding path program 1 times [2024-11-16 03:03:18,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:03:18,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129721043] [2024-11-16 03:03:18,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:03:18,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:03:18,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:18,934 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 03:03:18,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:18,954 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 03:03:18,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:18,957 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-16 03:03:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:18,960 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-16 03:03:18,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:18,970 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-16 03:03:19,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:19,037 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-11-16 03:03:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:19,094 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-16 03:03:19,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:03:19,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129721043] [2024-11-16 03:03:19,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129721043] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:03:19,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749008165] [2024-11-16 03:03:19,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:03:19,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:03:19,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:03:19,096 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) [2024-11-16 03:03:19,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-16 03:03:19,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:19,569 INFO L255 TraceCheckSpWp]: Trace formula consists of 858 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 03:03:19,572 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:03:19,616 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-11-16 03:03:19,616 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:03:19,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749008165] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:03:19,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:03:19,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-16 03:03:19,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713952388] [2024-11-16 03:03:19,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:03:19,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:03:19,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:03:19,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:03:19,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-16 03:03:19,618 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) [2024-11-16 03:03:19,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:03:19,633 INFO L93 Difference]: Finished difference Result 471 states and 671 transitions. [2024-11-16 03:03:19,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:03:19,634 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 [2024-11-16 03:03:19,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:03:19,636 INFO L225 Difference]: With dead ends: 471 [2024-11-16 03:03:19,636 INFO L226 Difference]: Without dead ends: 461 [2024-11-16 03:03:19,636 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 [2024-11-16 03:03:19,636 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 [2024-11-16 03:03:19,637 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] [2024-11-16 03:03:19,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2024-11-16 03:03:19,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 461. [2024-11-16 03:03:19,643 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) [2024-11-16 03:03:19,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 659 transitions. [2024-11-16 03:03:19,644 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 659 transitions. Word has length 150 [2024-11-16 03:03:19,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:03:19,644 INFO L471 AbstractCegarLoop]: Abstraction has 461 states and 659 transitions. [2024-11-16 03:03:19,645 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) [2024-11-16 03:03:19,645 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 659 transitions. [2024-11-16 03:03:19,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-16 03:03:19,646 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:03:19,646 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] [2024-11-16 03:03:19,661 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-16 03:03:19,846 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 [2024-11-16 03:03:19,847 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:03:19,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:03:19,847 INFO L85 PathProgramCache]: Analyzing trace with hash 2138554625, now seen corresponding path program 1 times [2024-11-16 03:03:19,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:03:19,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057671359] [2024-11-16 03:03:19,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:03:19,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:03:19,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:20,034 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 03:03:20,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:20,051 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 03:03:20,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:20,054 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-16 03:03:20,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:20,057 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-16 03:03:20,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:20,065 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-16 03:03:20,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:20,126 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-11-16 03:03:20,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:20,185 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-16 03:03:20,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:03:20,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057671359] [2024-11-16 03:03:20,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057671359] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:03:20,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486268236] [2024-11-16 03:03:20,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:03:20,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:03:20,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:03:20,187 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) [2024-11-16 03:03:20,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-16 03:03:20,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:20,662 INFO L255 TraceCheckSpWp]: Trace formula consists of 889 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 03:03:20,664 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:03:20,726 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-11-16 03:03:20,726 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:03:20,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486268236] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:03:20,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:03:20,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-16 03:03:20,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156991547] [2024-11-16 03:03:20,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:03:20,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:03:20,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:03:20,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:03:20,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-16 03:03:20,728 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) [2024-11-16 03:03:20,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:03:20,738 INFO L93 Difference]: Finished difference Result 707 states and 1051 transitions. [2024-11-16 03:03:20,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:03:20,739 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 [2024-11-16 03:03:20,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:03:20,741 INFO L225 Difference]: With dead ends: 707 [2024-11-16 03:03:20,741 INFO L226 Difference]: Without dead ends: 697 [2024-11-16 03:03:20,742 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 [2024-11-16 03:03:20,742 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 [2024-11-16 03:03:20,742 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] [2024-11-16 03:03:20,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2024-11-16 03:03:20,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 697. [2024-11-16 03:03:20,751 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) [2024-11-16 03:03:20,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1039 transitions. [2024-11-16 03:03:20,753 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1039 transitions. Word has length 161 [2024-11-16 03:03:20,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:03:20,753 INFO L471 AbstractCegarLoop]: Abstraction has 697 states and 1039 transitions. [2024-11-16 03:03:20,754 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) [2024-11-16 03:03:20,754 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1039 transitions. [2024-11-16 03:03:20,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-11-16 03:03:20,755 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:03:20,755 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] [2024-11-16 03:03:20,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-16 03:03:20,956 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 [2024-11-16 03:03:20,956 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:03:20,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:03:20,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1004373677, now seen corresponding path program 1 times [2024-11-16 03:03:20,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:03:20,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156890691] [2024-11-16 03:03:20,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:03:20,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:03:21,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:21,163 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 03:03:21,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:21,183 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 03:03:21,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:21,187 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-16 03:03:21,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:21,190 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-16 03:03:21,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:21,199 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-16 03:03:21,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:21,264 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-11-16 03:03:21,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:21,330 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-16 03:03:21,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:03:21,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156890691] [2024-11-16 03:03:21,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156890691] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:03:21,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010577650] [2024-11-16 03:03:21,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:03:21,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:03:21,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:03:21,334 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) [2024-11-16 03:03:21,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-16 03:03:21,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:21,895 INFO L255 TraceCheckSpWp]: Trace formula consists of 961 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 03:03:21,898 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:03:21,982 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2024-11-16 03:03:21,982 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:03:21,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010577650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:03:21,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:03:21,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-16 03:03:21,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876074476] [2024-11-16 03:03:21,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:03:21,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:03:21,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:03:21,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:03:21,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-16 03:03:21,984 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) [2024-11-16 03:03:21,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:03:21,998 INFO L93 Difference]: Finished difference Result 1179 states and 1811 transitions. [2024-11-16 03:03:21,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:03:21,999 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 [2024-11-16 03:03:21,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:03:22,002 INFO L225 Difference]: With dead ends: 1179 [2024-11-16 03:03:22,002 INFO L226 Difference]: Without dead ends: 1169 [2024-11-16 03:03:22,003 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 [2024-11-16 03:03:22,003 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 [2024-11-16 03:03:22,003 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] [2024-11-16 03:03:22,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2024-11-16 03:03:22,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1169. [2024-11-16 03:03:22,020 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) [2024-11-16 03:03:22,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1169 states to 1169 states and 1799 transitions. [2024-11-16 03:03:22,023 INFO L78 Accepts]: Start accepts. Automaton has 1169 states and 1799 transitions. Word has length 186 [2024-11-16 03:03:22,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:03:22,024 INFO L471 AbstractCegarLoop]: Abstraction has 1169 states and 1799 transitions. [2024-11-16 03:03:22,024 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) [2024-11-16 03:03:22,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1169 states and 1799 transitions. [2024-11-16 03:03:22,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-16 03:03:22,027 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:03:22,027 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] [2024-11-16 03:03:22,041 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-16 03:03:22,227 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 [2024-11-16 03:03:22,228 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:03:22,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:03:22,228 INFO L85 PathProgramCache]: Analyzing trace with hash 50915901, now seen corresponding path program 1 times [2024-11-16 03:03:22,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:03:22,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004295560] [2024-11-16 03:03:22,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:03:22,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:03:22,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:22,424 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 03:03:22,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:22,439 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 03:03:22,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:22,442 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-16 03:03:22,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:22,445 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-16 03:03:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:22,453 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-16 03:03:22,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:22,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-11-16 03:03:22,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:22,571 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-16 03:03:22,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:03:22,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004295560] [2024-11-16 03:03:22,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004295560] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:03:22,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452718799] [2024-11-16 03:03:22,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:03:22,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:03:22,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:03:22,573 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) [2024-11-16 03:03:22,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-16 03:03:23,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:23,100 INFO L255 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 03:03:23,103 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:03:23,190 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2024-11-16 03:03:23,191 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:03:23,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452718799] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:03:23,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:03:23,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-16 03:03:23,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300039666] [2024-11-16 03:03:23,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:03:23,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:03:23,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:03:23,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:03:23,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-16 03:03:23,194 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) [2024-11-16 03:03:23,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:03:23,211 INFO L93 Difference]: Finished difference Result 2123 states and 3331 transitions. [2024-11-16 03:03:23,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:03:23,211 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 [2024-11-16 03:03:23,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:03:23,218 INFO L225 Difference]: With dead ends: 2123 [2024-11-16 03:03:23,218 INFO L226 Difference]: Without dead ends: 2113 [2024-11-16 03:03:23,219 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 [2024-11-16 03:03:23,219 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 [2024-11-16 03:03:23,219 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] [2024-11-16 03:03:23,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2113 states. [2024-11-16 03:03:23,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2113 to 2113. [2024-11-16 03:03:23,249 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) [2024-11-16 03:03:23,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2113 states to 2113 states and 3319 transitions. [2024-11-16 03:03:23,254 INFO L78 Accepts]: Start accepts. Automaton has 2113 states and 3319 transitions. Word has length 203 [2024-11-16 03:03:23,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:03:23,254 INFO L471 AbstractCegarLoop]: Abstraction has 2113 states and 3319 transitions. [2024-11-16 03:03:23,254 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) [2024-11-16 03:03:23,254 INFO L276 IsEmpty]: Start isEmpty. Operand 2113 states and 3319 transitions. [2024-11-16 03:03:23,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2024-11-16 03:03:23,258 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:03:23,258 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] [2024-11-16 03:03:23,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-16 03:03:23,458 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 [2024-11-16 03:03:23,459 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:03:23,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:03:23,459 INFO L85 PathProgramCache]: Analyzing trace with hash 341063054, now seen corresponding path program 1 times [2024-11-16 03:03:23,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:03:23,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17029137] [2024-11-16 03:03:23,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:03:23,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:03:23,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:23,677 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 03:03:23,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:23,694 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 03:03:23,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:23,697 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-16 03:03:23,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:23,700 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-16 03:03:23,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:23,712 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-16 03:03:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:23,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-11-16 03:03:23,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:23,862 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2024-11-16 03:03:23,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:03:23,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17029137] [2024-11-16 03:03:23,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17029137] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:03:23,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042173591] [2024-11-16 03:03:23,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:03:23,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:03:23,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:03:23,864 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) [2024-11-16 03:03:23,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-16 03:03:24,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:24,388 INFO L255 TraceCheckSpWp]: Trace formula consists of 1100 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 03:03:24,391 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:03:24,496 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2024-11-16 03:03:24,496 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:03:24,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042173591] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:03:24,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:03:24,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-16 03:03:24,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892134502] [2024-11-16 03:03:24,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:03:24,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:03:24,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:03:24,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:03:24,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-16 03:03:24,497 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) [2024-11-16 03:03:24,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:03:24,520 INFO L93 Difference]: Finished difference Result 4011 states and 6371 transitions. [2024-11-16 03:03:24,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:03:24,521 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 [2024-11-16 03:03:24,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:03:24,531 INFO L225 Difference]: With dead ends: 4011 [2024-11-16 03:03:24,531 INFO L226 Difference]: Without dead ends: 4001 [2024-11-16 03:03:24,532 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 [2024-11-16 03:03:24,532 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 [2024-11-16 03:03:24,533 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] [2024-11-16 03:03:24,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4001 states. [2024-11-16 03:03:24,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4001 to 4001. [2024-11-16 03:03:24,572 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) [2024-11-16 03:03:24,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4001 states to 4001 states and 6359 transitions. [2024-11-16 03:03:24,581 INFO L78 Accepts]: Start accepts. Automaton has 4001 states and 6359 transitions. Word has length 234 [2024-11-16 03:03:24,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:03:24,581 INFO L471 AbstractCegarLoop]: Abstraction has 4001 states and 6359 transitions. [2024-11-16 03:03:24,581 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) [2024-11-16 03:03:24,581 INFO L276 IsEmpty]: Start isEmpty. Operand 4001 states and 6359 transitions. [2024-11-16 03:03:24,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2024-11-16 03:03:24,587 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:03:24,587 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] [2024-11-16 03:03:24,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-16 03:03:24,788 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 [2024-11-16 03:03:24,788 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:03:24,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:03:24,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1407440576, now seen corresponding path program 1 times [2024-11-16 03:03:24,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:03:24,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4947152] [2024-11-16 03:03:24,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:03:24,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:03:24,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:25,053 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 03:03:25,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:25,068 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 03:03:25,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:25,071 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-16 03:03:25,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:25,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-16 03:03:25,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:25,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-16 03:03:25,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:25,138 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-11-16 03:03:25,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:25,198 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2024-11-16 03:03:25,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:03:25,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4947152] [2024-11-16 03:03:25,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4947152] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:03:25,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273239115] [2024-11-16 03:03:25,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:03:25,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:03:25,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:03:25,200 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) [2024-11-16 03:03:25,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-16 03:03:25,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:25,803 INFO L255 TraceCheckSpWp]: Trace formula consists of 1254 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 03:03:25,808 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:03:26,007 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2024-11-16 03:03:26,008 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:03:26,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273239115] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:03:26,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:03:26,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-16 03:03:26,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323348311] [2024-11-16 03:03:26,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:03:26,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:03:26,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:03:26,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:03:26,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-16 03:03:26,009 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) [2024-11-16 03:03:26,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:03:26,060 INFO L93 Difference]: Finished difference Result 7787 states and 12451 transitions. [2024-11-16 03:03:26,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:03:26,061 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 [2024-11-16 03:03:26,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:03:26,081 INFO L225 Difference]: With dead ends: 7787 [2024-11-16 03:03:26,081 INFO L226 Difference]: Without dead ends: 7777 [2024-11-16 03:03:26,084 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 [2024-11-16 03:03:26,085 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 [2024-11-16 03:03:26,085 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] [2024-11-16 03:03:26,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7777 states. [2024-11-16 03:03:26,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7777 to 7777. [2024-11-16 03:03:26,202 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) [2024-11-16 03:03:26,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7777 states to 7777 states and 12439 transitions. [2024-11-16 03:03:26,217 INFO L78 Accepts]: Start accepts. Automaton has 7777 states and 12439 transitions. Word has length 287 [2024-11-16 03:03:26,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:03:26,218 INFO L471 AbstractCegarLoop]: Abstraction has 7777 states and 12439 transitions. [2024-11-16 03:03:26,218 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) [2024-11-16 03:03:26,218 INFO L276 IsEmpty]: Start isEmpty. Operand 7777 states and 12439 transitions. [2024-11-16 03:03:26,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2024-11-16 03:03:26,232 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:03:26,233 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] [2024-11-16 03:03:26,251 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-16 03:03:26,433 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 [2024-11-16 03:03:26,433 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:03:26,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:03:26,434 INFO L85 PathProgramCache]: Analyzing trace with hash -2087389806, now seen corresponding path program 1 times [2024-11-16 03:03:26,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:03:26,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518242870] [2024-11-16 03:03:26,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:03:26,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:03:26,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:26,706 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 03:03:26,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:26,720 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 03:03:26,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:26,724 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-16 03:03:26,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:26,726 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-16 03:03:26,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:26,735 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-16 03:03:26,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:26,796 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-11-16 03:03:26,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:26,892 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2024-11-16 03:03:26,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:03:26,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518242870] [2024-11-16 03:03:26,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518242870] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:03:26,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081779086] [2024-11-16 03:03:26,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:03:26,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:03:26,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:03:26,893 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) [2024-11-16 03:03:26,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-16 03:03:27,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:27,501 INFO L255 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 03:03:27,505 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:03:27,693 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2024-11-16 03:03:27,693 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:03:27,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081779086] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:03:27,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:03:27,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-16 03:03:27,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719412261] [2024-11-16 03:03:27,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:03:27,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:03:27,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:03:27,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:03:27,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-16 03:03:27,695 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) [2024-11-16 03:03:27,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:03:27,754 INFO L93 Difference]: Finished difference Result 15339 states and 24611 transitions. [2024-11-16 03:03:27,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:03:27,754 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 [2024-11-16 03:03:27,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:03:27,782 INFO L225 Difference]: With dead ends: 15339 [2024-11-16 03:03:27,782 INFO L226 Difference]: Without dead ends: 15329 [2024-11-16 03:03:27,788 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 [2024-11-16 03:03:27,789 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 [2024-11-16 03:03:27,789 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] [2024-11-16 03:03:27,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15329 states. [2024-11-16 03:03:27,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15329 to 15329. [2024-11-16 03:03:27,961 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) [2024-11-16 03:03:27,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15329 states to 15329 states and 24599 transitions. [2024-11-16 03:03:27,981 INFO L78 Accepts]: Start accepts. Automaton has 15329 states and 24599 transitions. Word has length 332 [2024-11-16 03:03:27,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:03:27,982 INFO L471 AbstractCegarLoop]: Abstraction has 15329 states and 24599 transitions. [2024-11-16 03:03:27,983 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) [2024-11-16 03:03:27,983 INFO L276 IsEmpty]: Start isEmpty. Operand 15329 states and 24599 transitions. [2024-11-16 03:03:28,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2024-11-16 03:03:28,005 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:03:28,005 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] [2024-11-16 03:03:28,021 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-16 03:03:28,205 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 [2024-11-16 03:03:28,206 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:03:28,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:03:28,206 INFO L85 PathProgramCache]: Analyzing trace with hash 227501918, now seen corresponding path program 1 times [2024-11-16 03:03:28,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:03:28,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823163626] [2024-11-16 03:03:28,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:03:28,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:03:28,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:28,555 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 03:03:28,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:28,571 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 03:03:28,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:28,574 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-16 03:03:28,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:28,577 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-16 03:03:28,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:28,585 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-16 03:03:28,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:28,644 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-11-16 03:03:28,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:28,697 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-16 03:03:28,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:03:28,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823163626] [2024-11-16 03:03:28,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823163626] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:03:28,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599711965] [2024-11-16 03:03:28,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:03:28,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:03:28,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:03:28,699 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) [2024-11-16 03:03:28,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-16 03:03:29,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:29,375 INFO L255 TraceCheckSpWp]: Trace formula consists of 1557 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 03:03:29,379 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:03:29,405 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 795 trivial. 0 not checked. [2024-11-16 03:03:29,405 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 03:03:29,455 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 795 trivial. 0 not checked. [2024-11-16 03:03:29,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599711965] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 03:03:29,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 03:03:29,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2024-11-16 03:03:29,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448947083] [2024-11-16 03:03:29,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 03:03:29,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 03:03:29,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:03:29,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 03:03:29,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-16 03:03:29,458 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) [2024-11-16 03:03:30,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-16 03:03:32,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-16 03:03:35,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:03:35,957 INFO L93 Difference]: Finished difference Result 30660 states and 49207 transitions. [2024-11-16 03:03:35,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 03:03:35,958 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 [2024-11-16 03:03:35,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:03:35,978 INFO L225 Difference]: With dead ends: 30660 [2024-11-16 03:03:35,978 INFO L226 Difference]: Without dead ends: 15337 [2024-11-16 03:03:35,993 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 [2024-11-16 03:03:35,994 INFO L432 NwaCegarLoop]: 325 mSDtfsCounter, 66 mSDsluCounter, 1969 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s 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, 6.3s IncrementalHoareTripleChecker+Time [2024-11-16 03:03:35,994 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 2294 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2024-11-16 03:03:36,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15337 states. [2024-11-16 03:03:36,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15337 to 15337. [2024-11-16 03:03:36,139 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) [2024-11-16 03:03:36,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15337 states to 15337 states and 24607 transitions. [2024-11-16 03:03:36,157 INFO L78 Accepts]: Start accepts. Automaton has 15337 states and 24607 transitions. Word has length 391 [2024-11-16 03:03:36,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:03:36,157 INFO L471 AbstractCegarLoop]: Abstraction has 15337 states and 24607 transitions. [2024-11-16 03:03:36,157 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) [2024-11-16 03:03:36,157 INFO L276 IsEmpty]: Start isEmpty. Operand 15337 states and 24607 transitions. [2024-11-16 03:03:36,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2024-11-16 03:03:36,176 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:03:36,177 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] [2024-11-16 03:03:36,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-16 03:03:36,377 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 [2024-11-16 03:03:36,378 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:03:36,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:03:36,378 INFO L85 PathProgramCache]: Analyzing trace with hash -300263423, now seen corresponding path program 2 times [2024-11-16 03:03:36,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:03:36,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644434980] [2024-11-16 03:03:36,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:03:36,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:03:36,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:36,669 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-16 03:03:36,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:36,674 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-16 03:03:36,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:36,677 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-16 03:03:36,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:36,680 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-16 03:03:36,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:36,687 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-16 03:03:36,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:36,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-11-16 03:03:36,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:36,900 INFO L134 CoverageAnalysis]: Checked inductivity of 891 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 889 trivial. 0 not checked. [2024-11-16 03:03:36,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:03:36,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644434980] [2024-11-16 03:03:36,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644434980] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:03:36,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952910067] [2024-11-16 03:03:36,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 03:03:36,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:03:36,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:03:36,902 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) [2024-11-16 03:03:36,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-16 03:03:39,231 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 03:03:39,232 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 03:03:39,239 INFO L255 TraceCheckSpWp]: Trace formula consists of 1669 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 03:03:39,245 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:03:39,300 INFO L134 CoverageAnalysis]: Checked inductivity of 891 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 871 trivial. 0 not checked. [2024-11-16 03:03:39,300 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 03:03:39,399 INFO L134 CoverageAnalysis]: Checked inductivity of 891 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 871 trivial. 0 not checked. [2024-11-16 03:03:39,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952910067] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 03:03:39,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 03:03:39,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 16 [2024-11-16 03:03:39,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256027032] [2024-11-16 03:03:39,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 03:03:39,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-16 03:03:39,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:03:39,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-16 03:03:39,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2024-11-16 03:03:39,402 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) [2024-11-16 03:03:46,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:03:46,082 INFO L93 Difference]: Finished difference Result 30688 states and 49238 transitions. [2024-11-16 03:03:46,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-16 03:03:46,083 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 [2024-11-16 03:03:46,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:03:46,104 INFO L225 Difference]: With dead ends: 30688 [2024-11-16 03:03:46,104 INFO L226 Difference]: Without dead ends: 15363 [2024-11-16 03:03:46,121 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 [2024-11-16 03:03:46,121 INFO L432 NwaCegarLoop]: 320 mSDtfsCounter, 74 mSDsluCounter, 2515 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s 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, 6.6s IncrementalHoareTripleChecker+Time [2024-11-16 03:03:46,121 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 2835 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2024-11-16 03:03:46,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15363 states. [2024-11-16 03:03:46,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15363 to 15357. [2024-11-16 03:03:46,266 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) [2024-11-16 03:03:46,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15357 states to 15357 states and 24629 transitions. [2024-11-16 03:03:46,286 INFO L78 Accepts]: Start accepts. Automaton has 15357 states and 24629 transitions. Word has length 405 [2024-11-16 03:03:46,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:03:46,286 INFO L471 AbstractCegarLoop]: Abstraction has 15357 states and 24629 transitions. [2024-11-16 03:03:46,286 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) [2024-11-16 03:03:46,286 INFO L276 IsEmpty]: Start isEmpty. Operand 15357 states and 24629 transitions. [2024-11-16 03:03:46,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2024-11-16 03:03:46,306 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:03:46,306 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] [2024-11-16 03:03:46,324 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-16 03:03:46,506 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 [2024-11-16 03:03:46,507 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:03:46,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:03:46,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1365309679, now seen corresponding path program 3 times [2024-11-16 03:03:46,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:03:46,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643633808] [2024-11-16 03:03:46,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:03:46,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:03:46,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:46,855 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-16 03:03:46,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:46,860 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-16 03:03:46,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:46,863 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-16 03:03:46,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:46,866 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-16 03:03:46,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:46,873 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-16 03:03:46,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:46,932 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-11-16 03:03:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:03:46,994 INFO L134 CoverageAnalysis]: Checked inductivity of 987 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 985 trivial. 0 not checked. [2024-11-16 03:03:46,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:03:46,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643633808] [2024-11-16 03:03:46,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643633808] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:03:46,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569525745] [2024-11-16 03:03:46,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 03:03:46,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:03:46,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:03:46,996 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) [2024-11-16 03:03:46,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-16 03:03:50,759 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-16 03:03:50,759 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 03:03:50,764 INFO L255 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-16 03:03:50,775 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:03:51,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 436 treesize of output 145 [2024-11-16 03:03:51,873 INFO L134 CoverageAnalysis]: Checked inductivity of 987 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 985 trivial. 0 not checked. [2024-11-16 03:03:51,873 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:03:51,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569525745] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:03:51,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:03:51,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-11-16 03:03:51,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853189937] [2024-11-16 03:03:51,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:03:51,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 03:03:51,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:03:51,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 03:03:51,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-16 03:03:51,875 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) [2024-11-16 03:03:53,133 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 [] [2024-11-16 03:03:54,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-16 03:03:56,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-16 03:03:58,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-16 03:03:59,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-16 03:04:00,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:04:00,532 INFO L93 Difference]: Finished difference Result 30633 states and 49169 transitions. [2024-11-16 03:04:00,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 03:04:00,533 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 [2024-11-16 03:04:00,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:04:00,561 INFO L225 Difference]: With dead ends: 30633 [2024-11-16 03:04:00,561 INFO L226 Difference]: Without dead ends: 15506 [2024-11-16 03:04:00,577 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 427 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-16 03:04:00,578 INFO L432 NwaCegarLoop]: 334 mSDtfsCounter, 248 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 1665 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2024-11-16 03:04:00,578 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 1665 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2024-11-16 03:04:00,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15506 states. [2024-11-16 03:04:00,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15506 to 15446. [2024-11-16 03:04:00,742 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) [2024-11-16 03:04:00,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15446 states to 15446 states and 24748 transitions. [2024-11-16 03:04:00,762 INFO L78 Accepts]: Start accepts. Automaton has 15446 states and 24748 transitions. Word has length 421 [2024-11-16 03:04:00,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:04:00,762 INFO L471 AbstractCegarLoop]: Abstraction has 15446 states and 24748 transitions. [2024-11-16 03:04:00,762 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) [2024-11-16 03:04:00,762 INFO L276 IsEmpty]: Start isEmpty. Operand 15446 states and 24748 transitions. [2024-11-16 03:04:00,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2024-11-16 03:04:00,825 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:04:00,826 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] [2024-11-16 03:04:00,844 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-16 03:04:01,026 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 [2024-11-16 03:04:01,026 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:04:01,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:04:01,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1014497336, now seen corresponding path program 1 times [2024-11-16 03:04:01,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:04:01,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209279120] [2024-11-16 03:04:01,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:04:01,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:04:01,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:04:01,364 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-16 03:04:01,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:04:01,367 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-16 03:04:01,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:04:01,370 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-16 03:04:01,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:04:01,373 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-16 03:04:01,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:04:01,383 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-16 03:04:01,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:04:01,436 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-11-16 03:04:01,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:04:01,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-11-16 03:04:01,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:04:01,517 INFO L134 CoverageAnalysis]: Checked inductivity of 989 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 987 trivial. 0 not checked. [2024-11-16 03:04:01,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:04:01,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209279120] [2024-11-16 03:04:01,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209279120] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:04:01,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309601908] [2024-11-16 03:04:01,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:04:01,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:04:01,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:04:01,519 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) [2024-11-16 03:04:01,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-16 03:04:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:04:02,322 INFO L255 TraceCheckSpWp]: Trace formula consists of 1938 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-16 03:04:02,326 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:04:02,421 INFO L134 CoverageAnalysis]: Checked inductivity of 989 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 879 trivial. 0 not checked. [2024-11-16 03:04:02,421 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 03:04:02,589 INFO L134 CoverageAnalysis]: Checked inductivity of 989 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 879 trivial. 0 not checked. [2024-11-16 03:04:02,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309601908] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 03:04:02,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 03:04:02,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13, 13] total 21 [2024-11-16 03:04:02,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881962769] [2024-11-16 03:04:02,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 03:04:02,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-16 03:04:02,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:04:02,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-16 03:04:02,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2024-11-16 03:04:02,593 INFO L87 Difference]: Start difference. First operand 15446 states and 24748 transitions. Second operand has 21 states, 21 states have (on average 9.904761904761905) internal successors, (208), 18 states have internal predecessors, (208), 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) [2024-11-16 03:04:09,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-16 03:04:11,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:04:11,638 INFO L93 Difference]: Finished difference Result 30890 states and 49502 transitions. [2024-11-16 03:04:11,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-16 03:04:11,638 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 9.904761904761905) internal successors, (208), 18 states have internal predecessors, (208), 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 437 [2024-11-16 03:04:11,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:04:11,656 INFO L225 Difference]: With dead ends: 30890 [2024-11-16 03:04:11,656 INFO L226 Difference]: Without dead ends: 15468 [2024-11-16 03:04:11,672 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 893 GetRequests, 864 SyntacticMatches, 8 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2024-11-16 03:04:11,672 INFO L432 NwaCegarLoop]: 327 mSDtfsCounter, 75 mSDsluCounter, 3059 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 3386 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2024-11-16 03:04:11,672 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 3386 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2024-11-16 03:04:11,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15468 states. [2024-11-16 03:04:11,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15468 to 15462. [2024-11-16 03:04:11,828 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) [2024-11-16 03:04:11,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15462 states to 15462 states and 24766 transitions. [2024-11-16 03:04:11,847 INFO L78 Accepts]: Start accepts. Automaton has 15462 states and 24766 transitions. Word has length 437 [2024-11-16 03:04:11,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:04:11,847 INFO L471 AbstractCegarLoop]: Abstraction has 15462 states and 24766 transitions. [2024-11-16 03:04:11,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 9.904761904761905) internal successors, (208), 18 states have internal predecessors, (208), 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) [2024-11-16 03:04:11,848 INFO L276 IsEmpty]: Start isEmpty. Operand 15462 states and 24766 transitions. [2024-11-16 03:04:11,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2024-11-16 03:04:11,863 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:04:11,863 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] [2024-11-16 03:04:11,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-16 03:04:12,064 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 [2024-11-16 03:04:12,065 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:04:12,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:04:12,065 INFO L85 PathProgramCache]: Analyzing trace with hash 637961492, now seen corresponding path program 2 times [2024-11-16 03:04:12,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:04:12,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965485036] [2024-11-16 03:04:12,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:04:12,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:04:12,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:04:12,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-16 03:04:12,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:04:12,422 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-16 03:04:12,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:04:12,425 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-16 03:04:12,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:04:12,431 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-16 03:04:12,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:04:12,438 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-11-16 03:04:12,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:04:12,501 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-11-16 03:04:12,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:04:12,562 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-11-16 03:04:12,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:04:12,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1095 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1093 trivial. 0 not checked. [2024-11-16 03:04:12,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:04:12,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965485036] [2024-11-16 03:04:12,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965485036] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:04:12,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534473243] [2024-11-16 03:04:12,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 03:04:12,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:04:12,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:04:12,575 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) [2024-11-16 03:04:12,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-16 03:04:15,031 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 03:04:15,031 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 03:04:15,041 INFO L255 TraceCheckSpWp]: Trace formula consists of 2007 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 03:04:15,046 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:04:15,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1095 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 1084 trivial. 0 not checked. [2024-11-16 03:04:15,077 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 03:04:15,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1095 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1087 trivial. 0 not checked. [2024-11-16 03:04:15,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534473243] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 03:04:15,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 03:04:15,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 13 [2024-11-16 03:04:15,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977472956] [2024-11-16 03:04:15,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 03:04:15,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 03:04:15,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:04:15,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 03:04:15,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-16 03:04:15,139 INFO L87 Difference]: Start difference. First operand 15462 states and 24766 transitions. Second operand has 13 states, 13 states have (on average 14.615384615384615) internal successors, (190), 10 states have internal predecessors, (190), 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) [2024-11-16 03:04:21,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:04:21,432 INFO L93 Difference]: Finished difference Result 30901 states and 49515 transitions. [2024-11-16 03:04:21,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 03:04:21,433 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 14.615384615384615) internal successors, (190), 10 states have internal predecessors, (190), 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 449 [2024-11-16 03:04:21,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:04:21,451 INFO L225 Difference]: With dead ends: 30901 [2024-11-16 03:04:21,451 INFO L226 Difference]: Without dead ends: 15508 [2024-11-16 03:04:21,465 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 917 GetRequests, 904 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-11-16 03:04:21,466 INFO L432 NwaCegarLoop]: 316 mSDtfsCounter, 115 mSDsluCounter, 2109 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 2425 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-11-16 03:04:21,466 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 2425 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 710 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2024-11-16 03:04:21,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15508 states. [2024-11-16 03:04:21,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15508 to 15502. [2024-11-16 03:04:21,614 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) [2024-11-16 03:04:21,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15502 states to 15502 states and 24816 transitions. [2024-11-16 03:04:21,634 INFO L78 Accepts]: Start accepts. Automaton has 15502 states and 24816 transitions. Word has length 449 [2024-11-16 03:04:21,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:04:21,634 INFO L471 AbstractCegarLoop]: Abstraction has 15502 states and 24816 transitions. [2024-11-16 03:04:21,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.615384615384615) internal successors, (190), 10 states have internal predecessors, (190), 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) [2024-11-16 03:04:21,634 INFO L276 IsEmpty]: Start isEmpty. Operand 15502 states and 24816 transitions. [2024-11-16 03:04:21,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2024-11-16 03:04:21,649 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:04:21,649 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] [2024-11-16 03:04:21,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-16 03:04:21,850 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 [2024-11-16 03:04:21,851 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:04:21,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:04:21,851 INFO L85 PathProgramCache]: Analyzing trace with hash 94818460, now seen corresponding path program 3 times [2024-11-16 03:04:21,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:04:21,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133764601] [2024-11-16 03:04:21,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:04:21,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:04:22,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:04:22,262 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-16 03:04:22,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:04:22,265 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-16 03:04:22,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:04:22,268 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-16 03:04:22,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:04:22,271 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-16 03:04:22,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:04:22,277 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-11-16 03:04:22,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:04:22,320 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-11-16 03:04:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:04:22,386 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-11-16 03:04:22,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:04:22,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1165 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1163 trivial. 0 not checked. [2024-11-16 03:04:22,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:04:22,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133764601] [2024-11-16 03:04:22,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133764601] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:04:22,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852403970] [2024-11-16 03:04:22,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 03:04:22,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:04:22,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:04:22,398 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) [2024-11-16 03:04:22,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-16 03:04:24,705 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-16 03:04:24,705 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 03:04:24,710 INFO L255 TraceCheckSpWp]: Trace formula consists of 832 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-16 03:04:24,716 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:04:25,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 300 treesize of output 350 [2024-11-16 03:04:28,403 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 03:04:28,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 39 select indices, 39 select index equivalence classes, 741 disjoint index pairs (out of 741 index pairs), introduced 39 new quantified variables, introduced 741 case distinctions, treesize of input 289 treesize of output 384 [2024-11-16 03:04:29,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1165 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1161 trivial. 0 not checked. [2024-11-16 03:04:29,764 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 03:04:35,687 WARN L286 SmtUtils]: Spent 5.84s on a formula simplification that was a NOOP. DAG size: 169 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)