./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursified_loop-simple/recursified_nested_3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursified_loop-simple/recursified_nested_3.c -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 9a8e2b8a66923dd7d46d9db92fbd8b38c75eb8108da5237ec87b15cd1ae67985 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 02:13:05,983 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 02:13:06,056 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 02:13:06,062 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 02:13:06,062 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 02:13:06,094 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 02:13:06,095 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 02:13:06,095 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 02:13:06,096 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 02:13:06,097 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 02:13:06,097 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 02:13:06,098 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 02:13:06,098 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 02:13:06,099 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 02:13:06,101 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 02:13:06,101 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 02:13:06,102 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 02:13:06,102 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 02:13:06,102 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 02:13:06,102 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 02:13:06,103 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 02:13:06,107 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 02:13:06,107 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 02:13:06,108 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 02:13:06,108 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 02:13:06,108 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 02:13:06,108 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 02:13:06,108 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 02:13:06,109 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 02:13:06,109 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 02:13:06,109 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 02:13:06,109 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 02:13:06,109 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 02:13:06,110 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 02:13:06,110 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 02:13:06,110 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 02:13:06,110 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 02:13:06,110 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 02:13:06,111 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 02:13:06,111 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 02:13:06,112 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 02:13:06,113 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 02:13:06,113 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a8e2b8a66923dd7d46d9db92fbd8b38c75eb8108da5237ec87b15cd1ae67985 [2024-11-22 02:13:06,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 02:13:06,380 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 02:13:06,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 02:13:06,385 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 02:13:06,386 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 02:13:06,387 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_loop-simple/recursified_nested_3.c [2024-11-22 02:13:07,815 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 02:13:07,995 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 02:13:07,996 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_loop-simple/recursified_nested_3.c [2024-11-22 02:13:08,002 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd9632828/2ca98cad13e449f489dc2145a6f0cb9f/FLAGb945c13dc [2024-11-22 02:13:08,013 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd9632828/2ca98cad13e449f489dc2145a6f0cb9f [2024-11-22 02:13:08,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 02:13:08,016 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 02:13:08,018 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 02:13:08,018 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 02:13:08,024 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 02:13:08,025 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:13:08" (1/1) ... [2024-11-22 02:13:08,026 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25d4ff10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:08, skipping insertion in model container [2024-11-22 02:13:08,026 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:13:08" (1/1) ... [2024-11-22 02:13:08,046 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 02:13:08,296 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/recursified_loop-simple/recursified_nested_3.c[1963,1976] [2024-11-22 02:13:08,303 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 02:13:08,312 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 02:13:08,331 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/recursified_loop-simple/recursified_nested_3.c[1963,1976] [2024-11-22 02:13:08,332 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 02:13:08,352 INFO L204 MainTranslator]: Completed translation [2024-11-22 02:13:08,353 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:08 WrapperNode [2024-11-22 02:13:08,354 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 02:13:08,355 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 02:13:08,355 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 02:13:08,355 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 02:13:08,362 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:08" (1/1) ... [2024-11-22 02:13:08,369 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:08" (1/1) ... [2024-11-22 02:13:08,388 INFO L138 Inliner]: procedures = 14, calls = 40, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 52 [2024-11-22 02:13:08,388 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 02:13:08,389 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 02:13:08,389 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 02:13:08,389 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 02:13:08,403 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:08" (1/1) ... [2024-11-22 02:13:08,407 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:08" (1/1) ... [2024-11-22 02:13:08,409 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:08" (1/1) ... [2024-11-22 02:13:08,427 INFO L175 MemorySlicer]: Split 20 memory accesses to 4 slices as follows [2, 6, 6, 6]. 30 percent of accesses are in the largest equivalence class. The 5 initializations are split as follows [2, 1, 1, 1]. The 6 writes are split as follows [0, 2, 2, 2]. [2024-11-22 02:13:08,428 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:08" (1/1) ... [2024-11-22 02:13:08,428 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:08" (1/1) ... [2024-11-22 02:13:08,437 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:08" (1/1) ... [2024-11-22 02:13:08,439 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:08" (1/1) ... [2024-11-22 02:13:08,442 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:08" (1/1) ... [2024-11-22 02:13:08,443 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:08" (1/1) ... [2024-11-22 02:13:08,449 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 02:13:08,450 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 02:13:08,450 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 02:13:08,450 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 02:13:08,455 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:08" (1/1) ... [2024-11-22 02:13:08,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 02:13:08,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:13:08,487 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) [2024-11-22 02:13:08,489 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 [2024-11-22 02:13:08,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 02:13:08,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 02:13:08,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 02:13:08,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-22 02:13:08,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-22 02:13:08,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-22 02:13:08,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 02:13:08,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 02:13:08,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-22 02:13:08,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-22 02:13:08,533 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_23_to_23_0 [2024-11-22 02:13:08,534 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_23_to_23_0 [2024-11-22 02:13:08,534 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_22_to_23_0 [2024-11-22 02:13:08,534 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_22_to_23_0 [2024-11-22 02:13:08,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 02:13:08,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 02:13:08,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 02:13:08,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 02:13:08,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-22 02:13:08,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-22 02:13:08,534 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_21_to_22_0 [2024-11-22 02:13:08,535 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_21_to_22_0 [2024-11-22 02:13:08,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-22 02:13:08,604 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 02:13:08,606 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 02:13:08,739 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-11-22 02:13:08,739 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 02:13:08,752 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 02:13:08,752 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-22 02:13:08,752 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:13:08 BoogieIcfgContainer [2024-11-22 02:13:08,753 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 02:13:08,755 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 02:13:08,755 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 02:13:08,758 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 02:13:08,758 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:13:08" (1/3) ... [2024-11-22 02:13:08,759 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e59eb9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:13:08, skipping insertion in model container [2024-11-22 02:13:08,759 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:08" (2/3) ... [2024-11-22 02:13:08,759 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e59eb9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:13:08, skipping insertion in model container [2024-11-22 02:13:08,759 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:13:08" (3/3) ... [2024-11-22 02:13:08,761 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_nested_3.c [2024-11-22 02:13:08,775 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 02:13:08,775 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 02:13:08,818 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 02:13:08,823 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;@3dd5d7d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 02:13:08,823 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 02:13:08,826 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 26 states have internal predecessors, (29), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-22 02:13:08,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-22 02:13:08,833 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:13:08,834 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:13:08,835 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:13:08,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:13:08,841 INFO L85 PathProgramCache]: Analyzing trace with hash 58732503, now seen corresponding path program 1 times [2024-11-22 02:13:08,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:13:08,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579242537] [2024-11-22 02:13:08,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:13:08,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:13:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:13:09,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:13:09,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:13:09,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579242537] [2024-11-22 02:13:09,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579242537] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:13:09,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:13:09,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 02:13:09,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980942924] [2024-11-22 02:13:09,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:13:09,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 02:13:09,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:13:09,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 02:13:09,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 02:13:09,503 INFO L87 Difference]: Start difference. First operand has 33 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 26 states have internal predecessors, (29), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 02:13:09,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:13:09,677 INFO L93 Difference]: Finished difference Result 46 states and 57 transitions. [2024-11-22 02:13:09,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 02:13:09,681 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-11-22 02:13:09,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:13:09,688 INFO L225 Difference]: With dead ends: 46 [2024-11-22 02:13:09,689 INFO L226 Difference]: Without dead ends: 31 [2024-11-22 02:13:09,691 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-22 02:13:09,695 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 14 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:13:09,697 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 59 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:13:09,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-22 02:13:09,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-22 02:13:09,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 20 states have (on average 1.25) internal successors, (25), 23 states have internal predecessors, (25), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-22 02:13:09,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2024-11-22 02:13:09,732 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 13 [2024-11-22 02:13:09,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:13:09,732 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2024-11-22 02:13:09,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 02:13:09,733 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2024-11-22 02:13:09,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-22 02:13:09,734 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:13:09,734 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:13:09,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 02:13:09,735 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:13:09,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:13:09,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1518425104, now seen corresponding path program 1 times [2024-11-22 02:13:09,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:13:09,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258382910] [2024-11-22 02:13:09,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:13:09,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:13:09,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:13:10,035 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 02:13:10,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:13:10,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258382910] [2024-11-22 02:13:10,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258382910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:13:10,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:13:10,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 02:13:10,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530319331] [2024-11-22 02:13:10,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:13:10,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 02:13:10,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:13:10,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 02:13:10,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 02:13:10,040 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 1 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 02:13:10,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:13:10,151 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2024-11-22 02:13:10,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 02:13:10,152 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 1 states have call predecessors, (3), 3 states have call successors, (3) Word has length 24 [2024-11-22 02:13:10,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:13:10,153 INFO L225 Difference]: With dead ends: 61 [2024-11-22 02:13:10,154 INFO L226 Difference]: Without dead ends: 33 [2024-11-22 02:13:10,154 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-22 02:13:10,155 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 10 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:13:10,156 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 82 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:13:10,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-22 02:13:10,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-22 02:13:10,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 24 states have internal predecessors, (26), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-22 02:13:10,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2024-11-22 02:13:10,164 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 24 [2024-11-22 02:13:10,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:13:10,164 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2024-11-22 02:13:10,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 1 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 02:13:10,165 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2024-11-22 02:13:10,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-22 02:13:10,166 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:13:10,166 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-22 02:13:10,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 02:13:10,167 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:13:10,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:13:10,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1549340056, now seen corresponding path program 1 times [2024-11-22 02:13:10,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:13:10,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554073446] [2024-11-22 02:13:10,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:13:10,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:13:10,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:13:10,361 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 02:13:10,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:13:10,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554073446] [2024-11-22 02:13:10,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554073446] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:13:10,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:13:10,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 02:13:10,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752343597] [2024-11-22 02:13:10,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:13:10,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 02:13:10,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:13:10,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 02:13:10,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 02:13:10,366 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 1 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-22 02:13:10,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:13:10,445 INFO L93 Difference]: Finished difference Result 65 states and 83 transitions. [2024-11-22 02:13:10,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 02:13:10,446 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 1 states have call predecessors, (5), 3 states have call successors, (5) Word has length 35 [2024-11-22 02:13:10,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:13:10,447 INFO L225 Difference]: With dead ends: 65 [2024-11-22 02:13:10,447 INFO L226 Difference]: Without dead ends: 35 [2024-11-22 02:13:10,448 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-22 02:13:10,449 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 8 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:13:10,449 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 96 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:13:10,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-22 02:13:10,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-11-22 02:13:10,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 25 states have internal predecessors, (27), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-22 02:13:10,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2024-11-22 02:13:10,455 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 35 [2024-11-22 02:13:10,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:13:10,456 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2024-11-22 02:13:10,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 1 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-22 02:13:10,456 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2024-11-22 02:13:10,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-22 02:13:10,457 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:13:10,458 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-22 02:13:10,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 02:13:10,458 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:13:10,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:13:10,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1995545220, now seen corresponding path program 1 times [2024-11-22 02:13:10,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:13:10,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533287500] [2024-11-22 02:13:10,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:13:10,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:13:10,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:13:10,829 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 02:13:10,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:13:10,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533287500] [2024-11-22 02:13:10,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533287500] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:13:10,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909854200] [2024-11-22 02:13:10,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:13:10,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:13:10,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:13:10,834 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) [2024-11-22 02:13:10,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 02:13:10,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:13:10,945 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-22 02:13:10,960 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:13:11,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-22 02:13:11,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-22 02:13:11,172 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-22 02:13:11,173 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:13:11,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-22 02:13:11,640 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-22 02:13:11,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909854200] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:13:11,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:13:11,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2024-11-22 02:13:11,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23697983] [2024-11-22 02:13:11,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:13:11,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-22 02:13:11,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:13:11,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-22 02:13:11,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2024-11-22 02:13:11,645 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand has 22 states, 17 states have (on average 3.0) internal successors, (51), 18 states have internal predecessors, (51), 10 states have call successors, (15), 5 states have call predecessors, (15), 8 states have return successors, (15), 9 states have call predecessors, (15), 10 states have call successors, (15) [2024-11-22 02:13:12,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:13:12,193 INFO L93 Difference]: Finished difference Result 80 states and 102 transitions. [2024-11-22 02:13:12,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-22 02:13:12,194 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 17 states have (on average 3.0) internal successors, (51), 18 states have internal predecessors, (51), 10 states have call successors, (15), 5 states have call predecessors, (15), 8 states have return successors, (15), 9 states have call predecessors, (15), 10 states have call successors, (15) Word has length 40 [2024-11-22 02:13:12,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:13:12,196 INFO L225 Difference]: With dead ends: 80 [2024-11-22 02:13:12,196 INFO L226 Difference]: Without dead ends: 46 [2024-11-22 02:13:12,197 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=147, Invalid=845, Unknown=0, NotChecked=0, Total=992 [2024-11-22 02:13:12,198 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 38 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 02:13:12,199 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 165 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 02:13:12,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-22 02:13:12,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2024-11-22 02:13:12,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 29 states have internal predecessors, (33), 6 states have call successors, (6), 4 states have call predecessors, (6), 8 states have return successors, (12), 9 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-22 02:13:12,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2024-11-22 02:13:12,212 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 40 [2024-11-22 02:13:12,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:13:12,212 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2024-11-22 02:13:12,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 17 states have (on average 3.0) internal successors, (51), 18 states have internal predecessors, (51), 10 states have call successors, (15), 5 states have call predecessors, (15), 8 states have return successors, (15), 9 states have call predecessors, (15), 10 states have call successors, (15) [2024-11-22 02:13:12,213 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2024-11-22 02:13:12,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-22 02:13:12,214 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:13:12,214 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-11-22 02:13:12,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 02:13:12,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:13:12,419 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:13:12,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:13:12,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1008547690, now seen corresponding path program 1 times [2024-11-22 02:13:12,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:13:12,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994661999] [2024-11-22 02:13:12,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:13:12,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:13:12,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:13:12,472 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-22 02:13:12,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:13:12,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994661999] [2024-11-22 02:13:12,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994661999] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:13:12,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:13:12,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 02:13:12,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609090973] [2024-11-22 02:13:12,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:13:12,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 02:13:12,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:13:12,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 02:13:12,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 02:13:12,474 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2024-11-22 02:13:12,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:13:12,491 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2024-11-22 02:13:12,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 02:13:12,492 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 45 [2024-11-22 02:13:12,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:13:12,493 INFO L225 Difference]: With dead ends: 49 [2024-11-22 02:13:12,493 INFO L226 Difference]: Without dead ends: 46 [2024-11-22 02:13:12,493 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 02:13:12,494 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 1 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:13:12,495 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 93 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:13:12,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-22 02:13:12,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2024-11-22 02:13:12,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 31 states have internal predecessors, (35), 6 states have call successors, (6), 4 states have call predecessors, (6), 8 states have return successors, (12), 9 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-22 02:13:12,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2024-11-22 02:13:12,507 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 45 [2024-11-22 02:13:12,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:13:12,508 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2024-11-22 02:13:12,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2024-11-22 02:13:12,508 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2024-11-22 02:13:12,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-22 02:13:12,509 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:13:12,509 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-11-22 02:13:12,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 02:13:12,510 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:13:12,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:13:12,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1008545768, now seen corresponding path program 1 times [2024-11-22 02:13:12,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:13:12,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139992023] [2024-11-22 02:13:12,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:13:12,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:13:12,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:13:12,950 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-22 02:13:12,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:13:12,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139992023] [2024-11-22 02:13:12,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139992023] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:13:12,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607519926] [2024-11-22 02:13:12,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:13:12,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:13:12,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:13:12,953 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) [2024-11-22 02:13:12,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 02:13:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:13:13,047 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-22 02:13:13,050 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:13:13,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-22 02:13:13,230 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-22 02:13:13,231 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:13:13,694 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-22 02:13:13,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607519926] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:13:13,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:13:13,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 10] total 27 [2024-11-22 02:13:13,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12738549] [2024-11-22 02:13:13,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:13:13,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-22 02:13:13,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:13:13,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-22 02:13:13,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=605, Unknown=0, NotChecked=0, Total=702 [2024-11-22 02:13:13,697 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand has 27 states, 20 states have (on average 2.55) internal successors, (51), 23 states have internal predecessors, (51), 11 states have call successors, (16), 5 states have call predecessors, (16), 9 states have return successors, (16), 8 states have call predecessors, (16), 11 states have call successors, (16) [2024-11-22 02:13:14,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:13:14,147 INFO L93 Difference]: Finished difference Result 85 states and 106 transitions. [2024-11-22 02:13:14,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-22 02:13:14,148 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 20 states have (on average 2.55) internal successors, (51), 23 states have internal predecessors, (51), 11 states have call successors, (16), 5 states have call predecessors, (16), 9 states have return successors, (16), 8 states have call predecessors, (16), 11 states have call successors, (16) Word has length 45 [2024-11-22 02:13:14,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:13:14,149 INFO L225 Difference]: With dead ends: 85 [2024-11-22 02:13:14,149 INFO L226 Difference]: Without dead ends: 45 [2024-11-22 02:13:14,150 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=210, Invalid=1196, Unknown=0, NotChecked=0, Total=1406 [2024-11-22 02:13:14,150 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 58 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 02:13:14,151 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 164 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 02:13:14,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-22 02:13:14,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-11-22 02:13:14,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 31 states have internal predecessors, (34), 6 states have call successors, (6), 4 states have call predecessors, (6), 9 states have return successors, (12), 9 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-22 02:13:14,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2024-11-22 02:13:14,158 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 45 [2024-11-22 02:13:14,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:13:14,158 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2024-11-22 02:13:14,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 20 states have (on average 2.55) internal successors, (51), 23 states have internal predecessors, (51), 11 states have call successors, (16), 5 states have call predecessors, (16), 9 states have return successors, (16), 8 states have call predecessors, (16), 11 states have call successors, (16) [2024-11-22 02:13:14,159 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2024-11-22 02:13:14,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-22 02:13:14,160 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:13:14,160 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 4, 4, 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] [2024-11-22 02:13:14,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 02:13:14,360 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,SelfDestructingSolverStorable5 [2024-11-22 02:13:14,361 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:13:14,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:13:14,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1357665073, now seen corresponding path program 2 times [2024-11-22 02:13:14,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:13:14,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782346568] [2024-11-22 02:13:14,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:13:14,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:13:14,394 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:13:14,394 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:13:15,196 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 10 proven. 97 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-22 02:13:15,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:13:15,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782346568] [2024-11-22 02:13:15,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782346568] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:13:15,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753266837] [2024-11-22 02:13:15,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:13:15,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:13:15,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:13:15,200 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) [2024-11-22 02:13:15,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 02:13:15,329 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:13:15,330 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:13:15,332 INFO L255 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-22 02:13:15,337 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:13:15,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-22 02:13:15,529 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 85 proven. 15 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-22 02:13:15,530 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:13:17,134 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 6 proven. 109 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-22 02:13:17,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753266837] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:13:17,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:13:17,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 18] total 32 [2024-11-22 02:13:17,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131578287] [2024-11-22 02:13:17,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:13:17,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-22 02:13:17,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:13:17,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-22 02:13:17,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=795, Unknown=0, NotChecked=0, Total=992 [2024-11-22 02:13:17,140 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand has 32 states, 24 states have (on average 2.6666666666666665) internal successors, (64), 27 states have internal predecessors, (64), 10 states have call successors, (21), 7 states have call predecessors, (21), 11 states have return successors, (26), 9 states have call predecessors, (26), 10 states have call successors, (26) [2024-11-22 02:13:17,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:13:17,458 INFO L93 Difference]: Finished difference Result 89 states and 109 transitions. [2024-11-22 02:13:17,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 02:13:17,459 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 24 states have (on average 2.6666666666666665) internal successors, (64), 27 states have internal predecessors, (64), 10 states have call successors, (21), 7 states have call predecessors, (21), 11 states have return successors, (26), 9 states have call predecessors, (26), 10 states have call successors, (26) Word has length 87 [2024-11-22 02:13:17,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:13:17,460 INFO L225 Difference]: With dead ends: 89 [2024-11-22 02:13:17,460 INFO L226 Difference]: Without dead ends: 49 [2024-11-22 02:13:17,461 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 158 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=298, Invalid=1184, Unknown=0, NotChecked=0, Total=1482 [2024-11-22 02:13:17,461 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 21 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 02:13:17,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 332 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 02:13:17,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-22 02:13:17,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-11-22 02:13:17,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 33 states have internal predecessors, (36), 6 states have call successors, (6), 4 states have call predecessors, (6), 11 states have return successors, (14), 11 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-22 02:13:17,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2024-11-22 02:13:17,469 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 87 [2024-11-22 02:13:17,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:13:17,470 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2024-11-22 02:13:17,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 24 states have (on average 2.6666666666666665) internal successors, (64), 27 states have internal predecessors, (64), 10 states have call successors, (21), 7 states have call predecessors, (21), 11 states have return successors, (26), 9 states have call predecessors, (26), 10 states have call successors, (26) [2024-11-22 02:13:17,470 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2024-11-22 02:13:17,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-22 02:13:17,471 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:13:17,471 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 10, 4, 4, 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] [2024-11-22 02:13:17,484 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 02:13:17,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:13:17,676 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:13:17,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:13:17,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1630787441, now seen corresponding path program 3 times [2024-11-22 02:13:17,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:13:17,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959193212] [2024-11-22 02:13:17,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:13:17,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:13:17,706 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-22 02:13:17,707 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:13:18,040 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2024-11-22 02:13:18,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:13:18,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959193212] [2024-11-22 02:13:18,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959193212] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:13:18,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261539502] [2024-11-22 02:13:18,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:13:18,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:13:18,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:13:18,042 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) [2024-11-22 02:13:18,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 02:13:18,156 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-22 02:13:18,156 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:13:18,158 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-22 02:13:18,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:13:18,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-22 02:13:18,475 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2024-11-22 02:13:18,475 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:13:19,386 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2024-11-22 02:13:19,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261539502] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:13:19,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:13:19,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 14] total 34 [2024-11-22 02:13:19,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120654152] [2024-11-22 02:13:19,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:13:19,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-22 02:13:19,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:13:19,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-22 02:13:19,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=975, Unknown=0, NotChecked=0, Total=1122 [2024-11-22 02:13:19,389 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand has 34 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 30 states have internal predecessors, (61), 16 states have call successors, (20), 6 states have call predecessors, (20), 10 states have return successors, (20), 15 states have call predecessors, (20), 16 states have call successors, (20) [2024-11-22 02:13:20,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:13:20,179 INFO L93 Difference]: Finished difference Result 84 states and 104 transitions. [2024-11-22 02:13:20,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-22 02:13:20,180 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 30 states have internal predecessors, (61), 16 states have call successors, (20), 6 states have call predecessors, (20), 10 states have return successors, (20), 15 states have call predecessors, (20), 16 states have call successors, (20) Word has length 107 [2024-11-22 02:13:20,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:13:20,181 INFO L225 Difference]: With dead ends: 84 [2024-11-22 02:13:20,181 INFO L226 Difference]: Without dead ends: 75 [2024-11-22 02:13:20,183 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 514 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=408, Invalid=2454, Unknown=0, NotChecked=0, Total=2862 [2024-11-22 02:13:20,184 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 50 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 02:13:20,184 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 274 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 02:13:20,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-22 02:13:20,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 67. [2024-11-22 02:13:20,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 42 states have (on average 1.1666666666666667) internal successors, (49), 43 states have internal predecessors, (49), 7 states have call successors, (7), 5 states have call predecessors, (7), 17 states have return successors, (28), 18 states have call predecessors, (28), 7 states have call successors, (28) [2024-11-22 02:13:20,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 84 transitions. [2024-11-22 02:13:20,196 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 84 transitions. Word has length 107 [2024-11-22 02:13:20,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:13:20,196 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 84 transitions. [2024-11-22 02:13:20,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 30 states have internal predecessors, (61), 16 states have call successors, (20), 6 states have call predecessors, (20), 10 states have return successors, (20), 15 states have call predecessors, (20), 16 states have call successors, (20) [2024-11-22 02:13:20,197 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 84 transitions. [2024-11-22 02:13:20,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-22 02:13:20,199 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:13:20,199 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 15, 15, 15, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:13:20,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-22 02:13:20,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:13:20,399 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:13:20,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:13:20,400 INFO L85 PathProgramCache]: Analyzing trace with hash -179007914, now seen corresponding path program 1 times [2024-11-22 02:13:20,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:13:20,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677025094] [2024-11-22 02:13:20,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:13:20,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:13:20,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:13:20,958 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 30 proven. 25 refuted. 0 times theorem prover too weak. 764 trivial. 0 not checked. [2024-11-22 02:13:20,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:13:20,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677025094] [2024-11-22 02:13:20,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677025094] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:13:20,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652853939] [2024-11-22 02:13:20,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:13:20,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:13:20,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:13:20,962 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) [2024-11-22 02:13:20,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 02:13:21,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:13:21,146 INFO L255 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-22 02:13:21,153 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:13:21,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-22 02:13:21,291 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 410 proven. 3 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2024-11-22 02:13:21,292 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:13:22,217 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 30 proven. 26 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2024-11-22 02:13:22,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652853939] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:13:22,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:13:22,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 22 [2024-11-22 02:13:22,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123461620] [2024-11-22 02:13:22,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:13:22,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-22 02:13:22,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:13:22,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-22 02:13:22,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2024-11-22 02:13:22,220 INFO L87 Difference]: Start difference. First operand 67 states and 84 transitions. Second operand has 22 states, 16 states have (on average 3.6875) internal successors, (59), 19 states have internal predecessors, (59), 11 states have call successors, (21), 5 states have call predecessors, (21), 7 states have return successors, (22), 8 states have call predecessors, (22), 11 states have call successors, (22) [2024-11-22 02:13:22,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:13:22,433 INFO L93 Difference]: Finished difference Result 117 states and 149 transitions. [2024-11-22 02:13:22,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 02:13:22,434 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 16 states have (on average 3.6875) internal successors, (59), 19 states have internal predecessors, (59), 11 states have call successors, (21), 5 states have call predecessors, (21), 7 states have return successors, (22), 8 states have call predecessors, (22), 11 states have call successors, (22) Word has length 154 [2024-11-22 02:13:22,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:13:22,435 INFO L225 Difference]: With dead ends: 117 [2024-11-22 02:13:22,435 INFO L226 Difference]: Without dead ends: 55 [2024-11-22 02:13:22,436 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=150, Invalid=552, Unknown=0, NotChecked=0, Total=702 [2024-11-22 02:13:22,437 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 28 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:13:22,437 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 213 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:13:22,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-22 02:13:22,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2024-11-22 02:13:22,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 36 states have internal predecessors, (39), 6 states have call successors, (6), 4 states have call predecessors, (6), 14 states have return successors, (17), 14 states have call predecessors, (17), 6 states have call successors, (17) [2024-11-22 02:13:22,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2024-11-22 02:13:22,449 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 154 [2024-11-22 02:13:22,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:13:22,450 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2024-11-22 02:13:22,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 16 states have (on average 3.6875) internal successors, (59), 19 states have internal predecessors, (59), 11 states have call successors, (21), 5 states have call predecessors, (21), 7 states have return successors, (22), 8 states have call predecessors, (22), 11 states have call successors, (22) [2024-11-22 02:13:22,450 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2024-11-22 02:13:22,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2024-11-22 02:13:22,453 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:13:22,454 INFO L215 NwaCegarLoop]: trace histogram [54, 54, 45, 45, 45, 12, 12, 9, 9, 9, 9, 9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:13:22,463 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 02:13:22,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:13:22,655 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:13:22,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:13:22,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1278376404, now seen corresponding path program 4 times [2024-11-22 02:13:22,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:13:22,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572530690] [2024-11-22 02:13:22,655 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:13:22,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:13:22,721 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:13:22,721 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:13:25,531 INFO L134 CoverageAnalysis]: Checked inductivity of 7119 backedges. 20 proven. 1431 refuted. 0 times theorem prover too weak. 5668 trivial. 0 not checked. [2024-11-22 02:13:25,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:13:25,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572530690] [2024-11-22 02:13:25,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572530690] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:13:25,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058281692] [2024-11-22 02:13:25,532 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:13:25,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:13:25,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:13:25,537 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) [2024-11-22 02:13:25,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 02:13:25,872 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:13:25,872 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:13:25,886 INFO L255 TraceCheckSpWp]: Trace formula consists of 1584 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-22 02:13:25,895 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:13:25,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-22 02:13:26,145 INFO L134 CoverageAnalysis]: Checked inductivity of 7119 backedges. 1390 proven. 35 refuted. 0 times theorem prover too weak. 5694 trivial. 0 not checked. [2024-11-22 02:13:26,146 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:13:29,367 INFO L134 CoverageAnalysis]: Checked inductivity of 7119 backedges. 12 proven. 1466 refuted. 0 times theorem prover too weak. 5641 trivial. 0 not checked. [2024-11-22 02:13:29,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058281692] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:13:29,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:13:29,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 26] total 42 [2024-11-22 02:13:29,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421878873] [2024-11-22 02:13:29,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:13:29,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-22 02:13:29,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:13:29,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-22 02:13:29,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=1391, Unknown=0, NotChecked=0, Total=1722 [2024-11-22 02:13:29,374 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand has 42 states, 32 states have (on average 2.25) internal successors, (72), 35 states have internal predecessors, (72), 12 states have call successors, (23), 9 states have call predecessors, (23), 15 states have return successors, (32), 13 states have call predecessors, (32), 12 states have call successors, (32) [2024-11-22 02:13:29,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:13:29,803 INFO L93 Difference]: Finished difference Result 107 states and 129 transitions. [2024-11-22 02:13:29,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 02:13:29,803 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 32 states have (on average 2.25) internal successors, (72), 35 states have internal predecessors, (72), 12 states have call successors, (23), 9 states have call predecessors, (23), 15 states have return successors, (32), 13 states have call predecessors, (32), 12 states have call successors, (32) Word has length 370 [2024-11-22 02:13:29,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:13:29,805 INFO L225 Difference]: With dead ends: 107 [2024-11-22 02:13:29,807 INFO L226 Difference]: Without dead ends: 57 [2024-11-22 02:13:29,808 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 772 GetRequests, 720 SyntacticMatches, 4 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=486, Invalid=1964, Unknown=0, NotChecked=0, Total=2450 [2024-11-22 02:13:29,809 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 54 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 02:13:29,810 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 438 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 02:13:29,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-22 02:13:29,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-11-22 02:13:29,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 37 states have internal predecessors, (40), 6 states have call successors, (6), 4 states have call predecessors, (6), 15 states have return successors, (18), 15 states have call predecessors, (18), 6 states have call successors, (18) [2024-11-22 02:13:29,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2024-11-22 02:13:29,824 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 370 [2024-11-22 02:13:29,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:13:29,825 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2024-11-22 02:13:29,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 32 states have (on average 2.25) internal successors, (72), 35 states have internal predecessors, (72), 12 states have call successors, (23), 9 states have call predecessors, (23), 15 states have return successors, (32), 13 states have call predecessors, (32), 12 states have call successors, (32) [2024-11-22 02:13:29,825 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2024-11-22 02:13:29,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2024-11-22 02:13:29,832 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:13:29,832 INFO L215 NwaCegarLoop]: trace histogram [63, 63, 54, 54, 54, 12, 12, 9, 9, 9, 9, 9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:13:29,844 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 02:13:30,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:13:30,034 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:13:30,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:13:30,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1564459760, now seen corresponding path program 5 times [2024-11-22 02:13:30,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:13:30,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712433991] [2024-11-22 02:13:30,035 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 02:13:30,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:13:30,414 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-22 02:13:30,415 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:13:34,662 INFO L134 CoverageAnalysis]: Checked inductivity of 9648 backedges. 429 proven. 631 refuted. 0 times theorem prover too weak. 8588 trivial. 0 not checked. [2024-11-22 02:13:34,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:13:34,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712433991] [2024-11-22 02:13:34,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712433991] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:13:34,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896823904] [2024-11-22 02:13:34,663 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 02:13:34,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:13:34,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:13:34,666 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) [2024-11-22 02:13:34,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 02:13:51,475 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-22 02:13:51,476 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:13:51,499 INFO L255 TraceCheckSpWp]: Trace formula consists of 1596 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-22 02:13:51,506 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:13:51,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-22 02:13:51,806 INFO L134 CoverageAnalysis]: Checked inductivity of 9648 backedges. 4366 proven. 15 refuted. 0 times theorem prover too weak. 5267 trivial. 0 not checked. [2024-11-22 02:13:51,806 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:13:54,347 INFO L134 CoverageAnalysis]: Checked inductivity of 9648 backedges. 6 proven. 221 refuted. 0 times theorem prover too weak. 9421 trivial. 0 not checked. [2024-11-22 02:13:54,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896823904] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:13:54,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:13:54,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 11, 18] total 44 [2024-11-22 02:13:54,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736955392] [2024-11-22 02:13:54,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:13:54,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-22 02:13:54,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:13:54,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-22 02:13:54,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=1607, Unknown=0, NotChecked=0, Total=1892 [2024-11-22 02:13:54,351 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand has 44 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 38 states have internal predecessors, (79), 21 states have call successors, (31), 8 states have call predecessors, (31), 13 states have return successors, (34), 16 states have call predecessors, (34), 21 states have call successors, (34) [2024-11-22 02:13:54,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:13:54,751 INFO L93 Difference]: Finished difference Result 111 states and 129 transitions. [2024-11-22 02:13:54,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 02:13:54,752 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 38 states have internal predecessors, (79), 21 states have call successors, (31), 8 states have call predecessors, (31), 13 states have return successors, (34), 16 states have call predecessors, (34), 21 states have call successors, (34) Word has length 415 [2024-11-22 02:13:54,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:13:54,753 INFO L225 Difference]: With dead ends: 111 [2024-11-22 02:13:54,753 INFO L226 Difference]: Without dead ends: 59 [2024-11-22 02:13:54,754 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 884 GetRequests, 830 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=452, Invalid=2628, Unknown=0, NotChecked=0, Total=3080 [2024-11-22 02:13:54,755 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 47 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 02:13:54,755 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 264 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 02:13:54,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-22 02:13:54,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-11-22 02:13:54,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 38 states have internal predecessors, (41), 6 states have call successors, (6), 4 states have call predecessors, (6), 16 states have return successors, (19), 16 states have call predecessors, (19), 6 states have call successors, (19) [2024-11-22 02:13:54,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2024-11-22 02:13:54,763 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 415 [2024-11-22 02:13:54,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:13:54,764 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2024-11-22 02:13:54,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 38 states have internal predecessors, (79), 21 states have call successors, (31), 8 states have call predecessors, (31), 13 states have return successors, (34), 16 states have call predecessors, (34), 21 states have call successors, (34) [2024-11-22 02:13:54,764 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2024-11-22 02:13:54,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2024-11-22 02:13:54,771 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:13:54,772 INFO L215 NwaCegarLoop]: trace histogram [84, 84, 72, 72, 72, 15, 15, 12, 12, 12, 12, 12, 12, 12, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:13:54,804 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-22 02:13:54,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:13:54,973 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:13:54,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:13:54,973 INFO L85 PathProgramCache]: Analyzing trace with hash -269020316, now seen corresponding path program 6 times [2024-11-22 02:13:54,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:13:54,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670256554] [2024-11-22 02:13:54,973 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 02:13:54,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:13:55,026 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-22 02:13:55,026 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:13:55,706 INFO L134 CoverageAnalysis]: Checked inductivity of 17151 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 17124 trivial. 0 not checked. [2024-11-22 02:13:55,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:13:55,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670256554] [2024-11-22 02:13:55,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670256554] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:13:55,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694897355] [2024-11-22 02:13:55,707 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 02:13:55,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:13:55,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:13:55,709 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) [2024-11-22 02:13:55,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 02:13:55,986 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-22 02:13:55,987 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:13:55,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-22 02:13:55,998 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:13:56,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-22 02:13:56,239 INFO L134 CoverageAnalysis]: Checked inductivity of 17151 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 17136 trivial. 0 not checked. [2024-11-22 02:13:56,239 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:13:58,805 INFO L134 CoverageAnalysis]: Checked inductivity of 17151 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 17118 trivial. 0 not checked. [2024-11-22 02:13:58,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694897355] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:13:58,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:13:58,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11, 18] total 40 [2024-11-22 02:13:58,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79089472] [2024-11-22 02:13:58,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:13:58,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-22 02:13:58,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:13:58,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-22 02:13:58,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=1296, Unknown=0, NotChecked=0, Total=1560 [2024-11-22 02:13:58,808 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand has 40 states, 30 states have (on average 1.9) internal successors, (57), 35 states have internal predecessors, (57), 18 states have call successors, (20), 6 states have call predecessors, (20), 12 states have return successors, (22), 18 states have call predecessors, (22), 18 states have call successors, (22) [2024-11-22 02:13:59,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:13:59,223 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2024-11-22 02:13:59,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 02:13:59,223 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 30 states have (on average 1.9) internal successors, (57), 35 states have internal predecessors, (57), 18 states have call successors, (20), 6 states have call predecessors, (20), 12 states have return successors, (22), 18 states have call predecessors, (22), 18 states have call successors, (22) Word has length 538 [2024-11-22 02:13:59,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:13:59,226 INFO L225 Difference]: With dead ends: 72 [2024-11-22 02:13:59,227 INFO L226 Difference]: Without dead ends: 63 [2024-11-22 02:13:59,227 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1101 GetRequests, 1056 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 621 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=384, Invalid=1778, Unknown=0, NotChecked=0, Total=2162 [2024-11-22 02:13:59,228 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 69 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 02:13:59,228 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 223 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 02:13:59,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-22 02:13:59,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-11-22 02:13:59,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 38 states have (on average 1.131578947368421) internal successors, (43), 40 states have internal predecessors, (43), 6 states have call successors, (6), 4 states have call predecessors, (6), 18 states have return successors, (21), 18 states have call predecessors, (21), 6 states have call successors, (21) [2024-11-22 02:13:59,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2024-11-22 02:13:59,240 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 538 [2024-11-22 02:13:59,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:13:59,241 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2024-11-22 02:13:59,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 30 states have (on average 1.9) internal successors, (57), 35 states have internal predecessors, (57), 18 states have call successors, (20), 6 states have call predecessors, (20), 12 states have return successors, (22), 18 states have call predecessors, (22), 18 states have call successors, (22) [2024-11-22 02:13:59,242 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2024-11-22 02:13:59,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 889 [2024-11-22 02:13:59,268 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:13:59,268 INFO L215 NwaCegarLoop]: trace histogram [140, 140, 120, 120, 120, 25, 25, 20, 20, 20, 20, 20, 20, 20, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:13:59,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-22 02:13:59,469 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,SelfDestructingSolverStorable11 [2024-11-22 02:13:59,469 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:13:59,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:13:59,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1388661156, now seen corresponding path program 7 times [2024-11-22 02:13:59,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:13:59,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651329983] [2024-11-22 02:13:59,470 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 02:13:59,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:13:59,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:14:04,003 INFO L134 CoverageAnalysis]: Checked inductivity of 47920 backedges. 21 proven. 631 refuted. 0 times theorem prover too weak. 47268 trivial. 0 not checked. [2024-11-22 02:14:04,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:14:04,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651329983] [2024-11-22 02:14:04,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651329983] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:14:04,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865960335] [2024-11-22 02:14:04,004 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 02:14:04,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:14:04,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:14:04,008 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) [2024-11-22 02:14:04,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 02:14:04,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:14:04,727 INFO L255 TraceCheckSpWp]: Trace formula consists of 3692 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-22 02:14:04,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:14:04,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-22 02:14:05,044 INFO L134 CoverageAnalysis]: Checked inductivity of 47920 backedges. 15919 proven. 24 refuted. 0 times theorem prover too weak. 31977 trivial. 0 not checked. [2024-11-22 02:14:05,045 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:14:10,944 INFO L134 CoverageAnalysis]: Checked inductivity of 47920 backedges. 469 proven. 209 refuted. 0 times theorem prover too weak. 47242 trivial. 0 not checked. [2024-11-22 02:14:10,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865960335] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:14:10,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:14:10,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 22] total 40 [2024-11-22 02:14:10,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838396473] [2024-11-22 02:14:10,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:14:10,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-22 02:14:10,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:14:10,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-22 02:14:10,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=1247, Unknown=0, NotChecked=0, Total=1560 [2024-11-22 02:14:10,948 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand has 40 states, 30 states have (on average 2.566666666666667) internal successors, (77), 34 states have internal predecessors, (77), 18 states have call successors, (28), 8 states have call predecessors, (28), 13 states have return successors, (34), 17 states have call predecessors, (34), 18 states have call successors, (34) [2024-11-22 02:14:11,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:14:11,276 INFO L93 Difference]: Finished difference Result 125 states and 146 transitions. [2024-11-22 02:14:11,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 02:14:11,277 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 30 states have (on average 2.566666666666667) internal successors, (77), 34 states have internal predecessors, (77), 18 states have call successors, (28), 8 states have call predecessors, (28), 13 states have return successors, (34), 17 states have call predecessors, (34), 18 states have call successors, (34) Word has length 888 [2024-11-22 02:14:11,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:14:11,278 INFO L225 Difference]: With dead ends: 125 [2024-11-22 02:14:11,278 INFO L226 Difference]: Without dead ends: 67 [2024-11-22 02:14:11,279 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1805 GetRequests, 1757 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=443, Invalid=1719, Unknown=0, NotChecked=0, Total=2162 [2024-11-22 02:14:11,280 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 31 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 02:14:11,280 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 286 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 02:14:11,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-22 02:14:11,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-11-22 02:14:11,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 40 states have (on average 1.125) internal successors, (45), 42 states have internal predecessors, (45), 6 states have call successors, (6), 4 states have call predecessors, (6), 20 states have return successors, (23), 20 states have call predecessors, (23), 6 states have call successors, (23) [2024-11-22 02:14:11,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 74 transitions. [2024-11-22 02:14:11,289 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 74 transitions. Word has length 888 [2024-11-22 02:14:11,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:14:11,290 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 74 transitions. [2024-11-22 02:14:11,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 30 states have (on average 2.566666666666667) internal successors, (77), 34 states have internal predecessors, (77), 18 states have call successors, (28), 8 states have call predecessors, (28), 13 states have return successors, (34), 17 states have call predecessors, (34), 18 states have call successors, (34) [2024-11-22 02:14:11,290 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 74 transitions. [2024-11-22 02:14:11,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1299 [2024-11-22 02:14:11,299 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:14:11,300 INFO L215 NwaCegarLoop]: trace histogram [210, 210, 180, 180, 180, 35, 35, 30, 30, 30, 30, 30, 30, 30, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:14:11,315 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-22 02:14:11,500 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,SelfDestructingSolverStorable12 [2024-11-22 02:14:11,501 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:14:11,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:14:11,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1156230426, now seen corresponding path program 8 times [2024-11-22 02:14:11,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:14:11,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254866941] [2024-11-22 02:14:11,501 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:14:11,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:14:11,892 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:14:11,893 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:14:19,301 INFO L134 CoverageAnalysis]: Checked inductivity of 107665 backedges. 12 proven. 51 refuted. 0 times theorem prover too weak. 107602 trivial. 0 not checked. [2024-11-22 02:14:19,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:14:19,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254866941] [2024-11-22 02:14:19,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254866941] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:14:19,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397469382] [2024-11-22 02:14:19,302 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:14:19,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:14:19,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:14:19,303 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) [2024-11-22 02:14:19,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-22 02:14:20,369 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:14:20,369 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:14:20,391 INFO L255 TraceCheckSpWp]: Trace formula consists of 5312 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-22 02:14:20,415 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:14:20,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-22 02:14:20,736 INFO L134 CoverageAnalysis]: Checked inductivity of 107665 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 107630 trivial. 0 not checked. [2024-11-22 02:14:20,736 INFO L311 TraceCheckSpWp]: Computing backward predicates...