./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e277983cfe4b30513b023d34f2b840358d8a25fd7a5c39241cadd105379bfb92 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 13:01:32,428 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 13:01:32,492 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-20 13:01:32,497 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 13:01:32,497 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 13:01:32,532 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 13:01:32,532 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 13:01:32,533 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 13:01:32,533 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 13:01:32,534 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 13:01:32,534 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 13:01:32,535 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 13:01:32,535 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 13:01:32,536 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 13:01:32,536 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 13:01:32,537 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 13:01:32,537 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 13:01:32,537 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 13:01:32,538 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 13:01:32,538 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 13:01:32,538 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 13:01:32,539 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 13:01:32,539 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 13:01:32,539 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 13:01:32,540 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 13:01:32,540 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 13:01:32,540 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 13:01:32,541 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 13:01:32,541 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 13:01:32,541 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 13:01:32,542 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 13:01:32,542 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 13:01:32,542 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 13:01:32,543 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 13:01:32,543 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 13:01:32,543 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 13:01:32,544 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 13:01:32,544 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 13:01:32,544 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 13:01:32,545 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 13:01:32,545 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 13:01:32,546 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 13:01:32,546 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e277983cfe4b30513b023d34f2b840358d8a25fd7a5c39241cadd105379bfb92 [2024-11-20 13:01:32,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 13:01:32,867 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 13:01:32,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 13:01:32,873 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 13:01:32,873 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 13:01:32,874 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-1.i [2024-11-20 13:01:34,298 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 13:01:34,590 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 13:01:34,591 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-1.i [2024-11-20 13:01:34,614 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ace14b23c/b61b91c39bf748dc8a6c74d6052f322c/FLAG2d814312e [2024-11-20 13:01:34,871 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ace14b23c/b61b91c39bf748dc8a6c74d6052f322c [2024-11-20 13:01:34,873 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 13:01:34,876 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 13:01:34,878 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 13:01:34,880 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 13:01:34,885 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 13:01:34,885 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:01:34" (1/1) ... [2024-11-20 13:01:34,886 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3adba193 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:01:34, skipping insertion in model container [2024-11-20 13:01:34,887 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:01:34" (1/1) ... [2024-11-20 13:01:34,938 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 13:01:35,389 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/uthash-2.0.2/uthash_BER_nondet_test2-1.i[37435,37448] [2024-11-20 13:01:35,496 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 13:01:35,505 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 13:01:35,543 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/uthash-2.0.2/uthash_BER_nondet_test2-1.i[37435,37448] [2024-11-20 13:01:35,612 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 13:01:35,659 INFO L204 MainTranslator]: Completed translation [2024-11-20 13:01:35,659 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:01:35 WrapperNode [2024-11-20 13:01:35,659 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 13:01:35,660 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 13:01:35,660 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 13:01:35,660 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 13:01:35,666 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:01:35" (1/1) ... [2024-11-20 13:01:35,690 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:01:35" (1/1) ... [2024-11-20 13:01:35,750 INFO L138 Inliner]: procedures = 207, calls = 221, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1277 [2024-11-20 13:01:35,750 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 13:01:35,751 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 13:01:35,751 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 13:01:35,751 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 13:01:35,762 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:01:35" (1/1) ... [2024-11-20 13:01:35,762 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:01:35" (1/1) ... [2024-11-20 13:01:35,780 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:01:35" (1/1) ... [2024-11-20 13:01:35,856 INFO L175 MemorySlicer]: Split 206 memory accesses to 3 slices as follows [2, 34, 170]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 46 writes are split as follows [0, 4, 42]. [2024-11-20 13:01:35,856 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:01:35" (1/1) ... [2024-11-20 13:01:35,856 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:01:35" (1/1) ... [2024-11-20 13:01:35,900 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:01:35" (1/1) ... [2024-11-20 13:01:35,924 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:01:35" (1/1) ... [2024-11-20 13:01:35,937 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:01:35" (1/1) ... [2024-11-20 13:01:35,947 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:01:35" (1/1) ... [2024-11-20 13:01:35,960 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 13:01:35,962 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 13:01:35,962 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 13:01:35,962 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 13:01:35,963 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:01:35" (1/1) ... [2024-11-20 13:01:35,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 13:01:35,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:01:36,009 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) [2024-11-20 13:01:36,014 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 [2024-11-20 13:01:36,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-20 13:01:36,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-20 13:01:36,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-20 13:01:36,123 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-20 13:01:36,123 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-20 13:01:36,123 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-20 13:01:36,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-20 13:01:36,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-20 13:01:36,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-20 13:01:36,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-20 13:01:36,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-20 13:01:36,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 13:01:36,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 13:01:36,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-20 13:01:36,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 13:01:36,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 13:01:36,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-20 13:01:36,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-20 13:01:36,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 13:01:36,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-20 13:01:36,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-20 13:01:36,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-20 13:01:36,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 13:01:36,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 13:01:36,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-20 13:01:36,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 13:01:36,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 13:01:36,326 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 13:01:36,329 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 13:01:38,367 INFO L? ?]: Removed 294 outVars from TransFormulas that were not future-live. [2024-11-20 13:01:38,367 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 13:01:38,394 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 13:01:38,395 INFO L316 CfgBuilder]: Removed 54 assume(true) statements. [2024-11-20 13:01:38,395 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:01:38 BoogieIcfgContainer [2024-11-20 13:01:38,395 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 13:01:38,401 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 13:01:38,401 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 13:01:38,405 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 13:01:38,405 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 01:01:34" (1/3) ... [2024-11-20 13:01:38,406 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6892dc4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:01:38, skipping insertion in model container [2024-11-20 13:01:38,406 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:01:35" (2/3) ... [2024-11-20 13:01:38,407 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6892dc4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:01:38, skipping insertion in model container [2024-11-20 13:01:38,407 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:01:38" (3/3) ... [2024-11-20 13:01:38,408 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_nondet_test2-1.i [2024-11-20 13:01:38,425 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 13:01:38,426 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-20 13:01:38,503 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 13:01:38,509 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;@343160ce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 13:01:38,510 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-20 13:01:38,517 INFO L276 IsEmpty]: Start isEmpty. Operand has 366 states, 360 states have (on average 1.6194444444444445) internal successors, (583), 361 states have internal predecessors, (583), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 13:01:38,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-20 13:01:38,524 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:01:38,524 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:01:38,525 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:01:38,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:01:38,530 INFO L85 PathProgramCache]: Analyzing trace with hash -271903450, now seen corresponding path program 1 times [2024-11-20 13:01:38,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:01:38,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153216436] [2024-11-20 13:01:38,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:01:38,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:01:38,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:38,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:01:38,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:01:38,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153216436] [2024-11-20 13:01:38,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153216436] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:01:38,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:01:38,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 13:01:38,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883179849] [2024-11-20 13:01:38,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:01:38,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-20 13:01:38,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:01:38,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-20 13:01:38,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-20 13:01:38,772 INFO L87 Difference]: Start difference. First operand has 366 states, 360 states have (on average 1.6194444444444445) internal successors, (583), 361 states have internal predecessors, (583), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:01:38,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:01:38,853 INFO L93 Difference]: Finished difference Result 729 states and 1174 transitions. [2024-11-20 13:01:38,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-20 13:01:38,856 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-20 13:01:38,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:01:38,867 INFO L225 Difference]: With dead ends: 729 [2024-11-20 13:01:38,867 INFO L226 Difference]: Without dead ends: 362 [2024-11-20 13:01:38,871 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-20 13:01:38,875 INFO L432 NwaCegarLoop]: 530 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 13:01:38,877 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 13:01:38,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2024-11-20 13:01:38,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2024-11-20 13:01:38,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 357 states have (on average 1.453781512605042) internal successors, (519), 357 states have internal predecessors, (519), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 13:01:38,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 525 transitions. [2024-11-20 13:01:38,933 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 525 transitions. Word has length 11 [2024-11-20 13:01:38,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:01:38,934 INFO L471 AbstractCegarLoop]: Abstraction has 362 states and 525 transitions. [2024-11-20 13:01:38,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:01:38,935 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 525 transitions. [2024-11-20 13:01:38,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-20 13:01:38,939 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:01:38,939 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:01:38,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 13:01:38,940 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:01:38,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:01:38,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1335073267, now seen corresponding path program 1 times [2024-11-20 13:01:38,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:01:38,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414681618] [2024-11-20 13:01:38,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:01:38,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:01:39,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:39,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:01:39,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:01:39,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414681618] [2024-11-20 13:01:39,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414681618] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:01:39,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:01:39,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 13:01:39,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108237641] [2024-11-20 13:01:39,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:01:39,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 13:01:39,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:01:39,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 13:01:39,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 13:01:39,450 INFO L87 Difference]: Start difference. First operand 362 states and 525 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:01:39,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:01:39,587 INFO L93 Difference]: Finished difference Result 479 states and 693 transitions. [2024-11-20 13:01:39,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 13:01:39,588 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-20 13:01:39,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:01:39,590 INFO L225 Difference]: With dead ends: 479 [2024-11-20 13:01:39,590 INFO L226 Difference]: Without dead ends: 320 [2024-11-20 13:01:39,591 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-20 13:01:39,595 INFO L432 NwaCegarLoop]: 423 mSDtfsCounter, 30 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 13:01:39,596 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1250 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 13:01:39,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-11-20 13:01:39,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2024-11-20 13:01:39,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 315 states have (on average 1.403174603174603) internal successors, (442), 315 states have internal predecessors, (442), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 13:01:39,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 448 transitions. [2024-11-20 13:01:39,612 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 448 transitions. Word has length 66 [2024-11-20 13:01:39,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:01:39,612 INFO L471 AbstractCegarLoop]: Abstraction has 320 states and 448 transitions. [2024-11-20 13:01:39,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:01:39,612 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 448 transitions. [2024-11-20 13:01:39,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-20 13:01:39,616 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:01:39,616 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:01:39,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 13:01:39,616 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:01:39,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:01:39,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1779429657, now seen corresponding path program 1 times [2024-11-20 13:01:39,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:01:39,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521724418] [2024-11-20 13:01:39,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:01:39,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:01:39,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:40,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:01:40,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:01:40,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521724418] [2024-11-20 13:01:40,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521724418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:01:40,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:01:40,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 13:01:40,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430202722] [2024-11-20 13:01:40,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:01:40,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 13:01:40,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:01:40,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 13:01:40,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-20 13:01:40,140 INFO L87 Difference]: Start difference. First operand 320 states and 448 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:01:40,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:01:40,308 INFO L93 Difference]: Finished difference Result 752 states and 1048 transitions. [2024-11-20 13:01:40,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 13:01:40,309 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-20 13:01:40,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:01:40,313 INFO L225 Difference]: With dead ends: 752 [2024-11-20 13:01:40,313 INFO L226 Difference]: Without dead ends: 632 [2024-11-20 13:01:40,316 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-20 13:01:40,318 INFO L432 NwaCegarLoop]: 472 mSDtfsCounter, 428 mSDsluCounter, 1367 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 1839 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 13:01:40,321 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 1839 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 13:01:40,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2024-11-20 13:01:40,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 322. [2024-11-20 13:01:40,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 317 states have (on average 1.4006309148264984) internal successors, (444), 317 states have internal predecessors, (444), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 13:01:40,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 450 transitions. [2024-11-20 13:01:40,343 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 450 transitions. Word has length 66 [2024-11-20 13:01:40,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:01:40,343 INFO L471 AbstractCegarLoop]: Abstraction has 322 states and 450 transitions. [2024-11-20 13:01:40,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:01:40,344 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 450 transitions. [2024-11-20 13:01:40,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-20 13:01:40,348 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:01:40,348 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:01:40,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 13:01:40,349 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:01:40,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:01:40,350 INFO L85 PathProgramCache]: Analyzing trace with hash 857389398, now seen corresponding path program 1 times [2024-11-20 13:01:40,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:01:40,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063521039] [2024-11-20 13:01:40,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:01:40,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:01:40,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:40,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:01:40,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:01:40,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063521039] [2024-11-20 13:01:40,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063521039] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:01:40,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:01:40,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 13:01:40,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893159143] [2024-11-20 13:01:40,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:01:40,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 13:01:40,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:01:40,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 13:01:40,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 13:01:40,640 INFO L87 Difference]: Start difference. First operand 322 states and 450 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:01:40,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:01:40,734 INFO L93 Difference]: Finished difference Result 597 states and 829 transitions. [2024-11-20 13:01:40,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 13:01:40,736 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2024-11-20 13:01:40,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:01:40,739 INFO L225 Difference]: With dead ends: 597 [2024-11-20 13:01:40,739 INFO L226 Difference]: Without dead ends: 280 [2024-11-20 13:01:40,740 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-20 13:01:40,741 INFO L432 NwaCegarLoop]: 340 mSDtfsCounter, 30 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 13:01:40,741 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1001 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 13:01:40,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-11-20 13:01:40,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2024-11-20 13:01:40,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 275 states have (on average 1.3345454545454545) internal successors, (367), 275 states have internal predecessors, (367), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 13:01:40,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 373 transitions. [2024-11-20 13:01:40,756 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 373 transitions. Word has length 142 [2024-11-20 13:01:40,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:01:40,757 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 373 transitions. [2024-11-20 13:01:40,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:01:40,758 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 373 transitions. [2024-11-20 13:01:40,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-20 13:01:40,764 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:01:40,764 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:01:40,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 13:01:40,764 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:01:40,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:01:40,765 INFO L85 PathProgramCache]: Analyzing trace with hash -172432950, now seen corresponding path program 1 times [2024-11-20 13:01:40,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:01:40,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989418237] [2024-11-20 13:01:40,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:01:40,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:01:40,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:40,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:01:40,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:01:40,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989418237] [2024-11-20 13:01:40,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989418237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:01:40,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:01:40,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 13:01:40,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278722994] [2024-11-20 13:01:40,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:01:40,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 13:01:40,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:01:40,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 13:01:40,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 13:01:40,986 INFO L87 Difference]: Start difference. First operand 280 states and 373 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:01:41,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:01:41,061 INFO L93 Difference]: Finished difference Result 738 states and 988 transitions. [2024-11-20 13:01:41,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 13:01:41,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2024-11-20 13:01:41,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:01:41,064 INFO L225 Difference]: With dead ends: 738 [2024-11-20 13:01:41,064 INFO L226 Difference]: Without dead ends: 463 [2024-11-20 13:01:41,065 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 13:01:41,066 INFO L432 NwaCegarLoop]: 469 mSDtfsCounter, 178 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 13:01:41,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 813 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 13:01:41,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2024-11-20 13:01:41,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 461. [2024-11-20 13:01:41,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 456 states have (on average 1.3399122807017543) internal successors, (611), 456 states have internal predecessors, (611), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 13:01:41,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 617 transitions. [2024-11-20 13:01:41,080 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 617 transitions. Word has length 142 [2024-11-20 13:01:41,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:01:41,080 INFO L471 AbstractCegarLoop]: Abstraction has 461 states and 617 transitions. [2024-11-20 13:01:41,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:01:41,081 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 617 transitions. [2024-11-20 13:01:41,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-20 13:01:41,082 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:01:41,083 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:01:41,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 13:01:41,083 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:01:41,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:01:41,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1229457117, now seen corresponding path program 1 times [2024-11-20 13:01:41,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:01:41,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849155603] [2024-11-20 13:01:41,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:01:41,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:01:41,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:41,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-20 13:01:41,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:41,365 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-20 13:01:41,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:41,373 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 13:01:41,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:01:41,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849155603] [2024-11-20 13:01:41,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849155603] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:01:41,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:01:41,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 13:01:41,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609447171] [2024-11-20 13:01:41,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:01:41,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 13:01:41,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:01:41,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 13:01:41,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 13:01:41,378 INFO L87 Difference]: Start difference. First operand 461 states and 617 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:01:41,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:01:41,704 INFO L93 Difference]: Finished difference Result 890 states and 1201 transitions. [2024-11-20 13:01:41,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 13:01:41,705 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 157 [2024-11-20 13:01:41,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:01:41,710 INFO L225 Difference]: With dead ends: 890 [2024-11-20 13:01:41,710 INFO L226 Difference]: Without dead ends: 464 [2024-11-20 13:01:41,711 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 13:01:41,713 INFO L432 NwaCegarLoop]: 352 mSDtfsCounter, 3 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 13:01:41,715 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 984 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 13:01:41,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2024-11-20 13:01:41,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 461. [2024-11-20 13:01:41,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 456 states have (on average 1.3267543859649122) internal successors, (605), 456 states have internal predecessors, (605), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 13:01:41,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 611 transitions. [2024-11-20 13:01:41,734 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 611 transitions. Word has length 157 [2024-11-20 13:01:41,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:01:41,734 INFO L471 AbstractCegarLoop]: Abstraction has 461 states and 611 transitions. [2024-11-20 13:01:41,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:01:41,735 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 611 transitions. [2024-11-20 13:01:41,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-20 13:01:41,738 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:01:41,738 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:01:41,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 13:01:41,739 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:01:41,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:01:41,740 INFO L85 PathProgramCache]: Analyzing trace with hash -522860511, now seen corresponding path program 1 times [2024-11-20 13:01:41,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:01:41,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031297214] [2024-11-20 13:01:41,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:01:41,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:01:41,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:42,093 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-20 13:01:42,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:42,099 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-20 13:01:42,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:42,103 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 13:01:42,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:01:42,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031297214] [2024-11-20 13:01:42,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031297214] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:01:42,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:01:42,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 13:01:42,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11465801] [2024-11-20 13:01:42,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:01:42,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 13:01:42,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:01:42,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 13:01:42,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-20 13:01:42,106 INFO L87 Difference]: Start difference. First operand 461 states and 611 transitions. Second operand has 6 states, 6 states have (on average 25.0) internal successors, (150), 5 states have internal predecessors, (150), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:01:42,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:01:42,881 INFO L93 Difference]: Finished difference Result 912 states and 1215 transitions. [2024-11-20 13:01:42,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 13:01:42,882 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 5 states have internal predecessors, (150), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 157 [2024-11-20 13:01:42,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:01:42,885 INFO L225 Difference]: With dead ends: 912 [2024-11-20 13:01:42,885 INFO L226 Difference]: Without dead ends: 543 [2024-11-20 13:01:42,886 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-20 13:01:42,887 INFO L432 NwaCegarLoop]: 429 mSDtfsCounter, 773 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 1387 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-20 13:01:42,887 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 1387 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-20 13:01:42,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2024-11-20 13:01:42,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 367. [2024-11-20 13:01:42,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 362 states have (on average 1.3176795580110496) internal successors, (477), 362 states have internal predecessors, (477), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 13:01:42,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 483 transitions. [2024-11-20 13:01:42,902 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 483 transitions. Word has length 157 [2024-11-20 13:01:42,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:01:42,903 INFO L471 AbstractCegarLoop]: Abstraction has 367 states and 483 transitions. [2024-11-20 13:01:42,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 5 states have internal predecessors, (150), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:01:42,904 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 483 transitions. [2024-11-20 13:01:42,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-20 13:01:42,905 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:01:42,905 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:01:42,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-20 13:01:42,906 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:01:42,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:01:42,906 INFO L85 PathProgramCache]: Analyzing trace with hash 121977805, now seen corresponding path program 1 times [2024-11-20 13:01:42,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:01:42,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793114442] [2024-11-20 13:01:42,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:01:42,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:01:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:43,580 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-20 13:01:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:43,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-20 13:01:43,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:43,649 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 13:01:43,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:01:43,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793114442] [2024-11-20 13:01:43,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793114442] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:01:43,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725360482] [2024-11-20 13:01:43,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:01:43,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:01:43,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:01:43,658 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) [2024-11-20 13:01:43,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 13:01:44,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:44,040 INFO L255 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-20 13:01:44,052 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:01:44,103 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 [2024-11-20 13:01:44,924 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-20 13:01:44,925 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 13:01:44,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725360482] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:01:44,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 13:01:44,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2024-11-20 13:01:44,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163111081] [2024-11-20 13:01:44,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:01:44,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 13:01:44,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:01:44,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 13:01:44,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-20 13:01:44,930 INFO L87 Difference]: Start difference. First operand 367 states and 483 transitions. Second operand has 10 states, 10 states have (on average 15.9) internal successors, (159), 10 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:01:45,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:01:45,754 INFO L93 Difference]: Finished difference Result 668 states and 880 transitions. [2024-11-20 13:01:45,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 13:01:45,755 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.9) internal successors, (159), 10 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 167 [2024-11-20 13:01:45,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:01:45,759 INFO L225 Difference]: With dead ends: 668 [2024-11-20 13:01:45,759 INFO L226 Difference]: Without dead ends: 551 [2024-11-20 13:01:45,760 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2024-11-20 13:01:45,760 INFO L432 NwaCegarLoop]: 357 mSDtfsCounter, 359 mSDsluCounter, 1466 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 1823 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-20 13:01:45,761 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 1823 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-20 13:01:45,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2024-11-20 13:01:45,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 404. [2024-11-20 13:01:45,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 399 states have (on average 1.2982456140350878) internal successors, (518), 399 states have internal predecessors, (518), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 13:01:45,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 524 transitions. [2024-11-20 13:01:45,778 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 524 transitions. Word has length 167 [2024-11-20 13:01:45,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:01:45,778 INFO L471 AbstractCegarLoop]: Abstraction has 404 states and 524 transitions. [2024-11-20 13:01:45,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.9) internal successors, (159), 10 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:01:45,779 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 524 transitions. [2024-11-20 13:01:45,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-20 13:01:45,781 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:01:45,781 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:01:45,794 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 13:01:45,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:01:45,986 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:01:45,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:01:45,986 INFO L85 PathProgramCache]: Analyzing trace with hash -469270385, now seen corresponding path program 1 times [2024-11-20 13:01:45,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:01:45,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486891779] [2024-11-20 13:01:45,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:01:45,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:01:46,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:46,505 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-20 13:01:46,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:46,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-20 13:01:46,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:46,543 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 13:01:46,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:01:46,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486891779] [2024-11-20 13:01:46,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486891779] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:01:46,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182692752] [2024-11-20 13:01:46,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:01:46,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:01:46,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:01:46,548 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) [2024-11-20 13:01:46,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 13:01:46,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:46,951 INFO L255 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-20 13:01:46,962 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:01:46,967 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 [2024-11-20 13:01:46,988 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 16 treesize of output 17 [2024-11-20 13:01:47,849 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 13:01:47,849 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 13:01:47,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182692752] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:01:47,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 13:01:47,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 14 [2024-11-20 13:01:47,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491120411] [2024-11-20 13:01:47,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:01:47,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 13:01:47,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:01:47,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 13:01:47,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-11-20 13:01:47,851 INFO L87 Difference]: Start difference. First operand 404 states and 524 transitions. Second operand has 11 states, 11 states have (on average 14.636363636363637) internal successors, (161), 11 states have internal predecessors, (161), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:01:48,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:01:48,965 INFO L93 Difference]: Finished difference Result 898 states and 1186 transitions. [2024-11-20 13:01:48,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 13:01:48,966 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.636363636363637) internal successors, (161), 11 states have internal predecessors, (161), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 168 [2024-11-20 13:01:48,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:01:48,969 INFO L225 Difference]: With dead ends: 898 [2024-11-20 13:01:48,969 INFO L226 Difference]: Without dead ends: 539 [2024-11-20 13:01:48,970 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2024-11-20 13:01:48,972 INFO L432 NwaCegarLoop]: 336 mSDtfsCounter, 454 mSDsluCounter, 1419 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 1755 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-20 13:01:48,972 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 1755 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-20 13:01:48,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2024-11-20 13:01:48,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 404. [2024-11-20 13:01:48,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 399 states have (on average 1.2957393483709274) internal successors, (517), 399 states have internal predecessors, (517), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 13:01:48,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 523 transitions. [2024-11-20 13:01:48,992 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 523 transitions. Word has length 168 [2024-11-20 13:01:48,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:01:48,992 INFO L471 AbstractCegarLoop]: Abstraction has 404 states and 523 transitions. [2024-11-20 13:01:48,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.636363636363637) internal successors, (161), 11 states have internal predecessors, (161), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:01:48,992 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 523 transitions. [2024-11-20 13:01:48,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-20 13:01:48,994 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:01:48,994 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:01:49,006 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-20 13:01:49,198 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,SelfDestructingSolverStorable8 [2024-11-20 13:01:49,199 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:01:49,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:01:49,199 INFO L85 PathProgramCache]: Analyzing trace with hash -585979606, now seen corresponding path program 1 times [2024-11-20 13:01:49,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:01:49,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375835228] [2024-11-20 13:01:49,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:01:49,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:01:49,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:49,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-20 13:01:49,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:49,649 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-20 13:01:49,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:49,653 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 13:01:49,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:01:49,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375835228] [2024-11-20 13:01:49,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375835228] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:01:49,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414369377] [2024-11-20 13:01:49,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:01:49,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:01:49,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:01:49,656 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) [2024-11-20 13:01:49,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 13:01:50,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:50,247 INFO L255 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-20 13:01:50,253 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:01:50,315 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 13:01:50,319 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 13:01:50,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414369377] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:01:50,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 13:01:50,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-20 13:01:50,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753739961] [2024-11-20 13:01:50,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:01:50,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 13:01:50,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:01:50,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 13:01:50,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 13:01:50,322 INFO L87 Difference]: Start difference. First operand 404 states and 523 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:01:50,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:01:50,475 INFO L93 Difference]: Finished difference Result 763 states and 998 transitions. [2024-11-20 13:01:50,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 13:01:50,475 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 169 [2024-11-20 13:01:50,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:01:50,477 INFO L225 Difference]: With dead ends: 763 [2024-11-20 13:01:50,477 INFO L226 Difference]: Without dead ends: 404 [2024-11-20 13:01:50,478 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 13:01:50,478 INFO L432 NwaCegarLoop]: 348 mSDtfsCounter, 17 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 13:01:50,480 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 915 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 13:01:50,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2024-11-20 13:01:50,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 404. [2024-11-20 13:01:50,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 399 states have (on average 1.2907268170426065) internal successors, (515), 399 states have internal predecessors, (515), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 13:01:50,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 521 transitions. [2024-11-20 13:01:50,497 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 521 transitions. Word has length 169 [2024-11-20 13:01:50,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:01:50,498 INFO L471 AbstractCegarLoop]: Abstraction has 404 states and 521 transitions. [2024-11-20 13:01:50,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:01:50,498 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 521 transitions. [2024-11-20 13:01:50,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-20 13:01:50,500 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:01:50,500 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:01:50,514 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-20 13:01:50,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:01:50,704 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:01:50,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:01:50,704 INFO L85 PathProgramCache]: Analyzing trace with hash 999668084, now seen corresponding path program 1 times [2024-11-20 13:01:50,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:01:50,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624568944] [2024-11-20 13:01:50,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:01:50,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:01:50,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:51,098 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-20 13:01:51,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:51,102 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-20 13:01:51,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:51,105 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 13:01:51,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:01:51,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624568944] [2024-11-20 13:01:51,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624568944] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:01:51,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:01:51,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 13:01:51,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050328369] [2024-11-20 13:01:51,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:01:51,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 13:01:51,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:01:51,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 13:01:51,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-20 13:01:51,107 INFO L87 Difference]: Start difference. First operand 404 states and 521 transitions. Second operand has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 6 states have internal predecessors, (163), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:01:51,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:01:51,506 INFO L93 Difference]: Finished difference Result 769 states and 1006 transitions. [2024-11-20 13:01:51,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 13:01:51,506 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 6 states have internal predecessors, (163), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 170 [2024-11-20 13:01:51,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:01:51,509 INFO L225 Difference]: With dead ends: 769 [2024-11-20 13:01:51,509 INFO L226 Difference]: Without dead ends: 413 [2024-11-20 13:01:51,510 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-20 13:01:51,511 INFO L432 NwaCegarLoop]: 346 mSDtfsCounter, 11 mSDsluCounter, 1130 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 13:01:51,511 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1476 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-20 13:01:51,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2024-11-20 13:01:51,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 410. [2024-11-20 13:01:51,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 405 states have (on average 1.2864197530864196) internal successors, (521), 405 states have internal predecessors, (521), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 13:01:51,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 527 transitions. [2024-11-20 13:01:51,550 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 527 transitions. Word has length 170 [2024-11-20 13:01:51,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:01:51,550 INFO L471 AbstractCegarLoop]: Abstraction has 410 states and 527 transitions. [2024-11-20 13:01:51,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 6 states have internal predecessors, (163), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:01:51,551 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 527 transitions. [2024-11-20 13:01:51,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-20 13:01:51,553 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:01:51,553 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:01:51,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-20 13:01:51,554 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:01:51,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:01:51,554 INFO L85 PathProgramCache]: Analyzing trace with hash 501112657, now seen corresponding path program 1 times [2024-11-20 13:01:51,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:01:51,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599183040] [2024-11-20 13:01:51,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:01:51,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:01:51,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:51,993 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-20 13:01:51,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:51,998 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-20 13:01:52,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:52,002 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 13:01:52,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:01:52,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599183040] [2024-11-20 13:01:52,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599183040] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:01:52,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:01:52,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 13:01:52,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457697218] [2024-11-20 13:01:52,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:01:52,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 13:01:52,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:01:52,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 13:01:52,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-20 13:01:52,004 INFO L87 Difference]: Start difference. First operand 410 states and 527 transitions. Second operand has 8 states, 8 states have (on average 20.5) internal successors, (164), 7 states have internal predecessors, (164), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:01:53,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:01:53,041 INFO L93 Difference]: Finished difference Result 775 states and 1010 transitions. [2024-11-20 13:01:53,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 13:01:53,042 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.5) internal successors, (164), 7 states have internal predecessors, (164), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 171 [2024-11-20 13:01:53,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:01:53,045 INFO L225 Difference]: With dead ends: 775 [2024-11-20 13:01:53,045 INFO L226 Difference]: Without dead ends: 423 [2024-11-20 13:01:53,046 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-20 13:01:53,047 INFO L432 NwaCegarLoop]: 336 mSDtfsCounter, 15 mSDsluCounter, 1643 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1979 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-20 13:01:53,047 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1979 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-20 13:01:53,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2024-11-20 13:01:53,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 418. [2024-11-20 13:01:53,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 413 states have (on average 1.2857142857142858) internal successors, (531), 413 states have internal predecessors, (531), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 13:01:53,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 537 transitions. [2024-11-20 13:01:53,066 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 537 transitions. Word has length 171 [2024-11-20 13:01:53,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:01:53,066 INFO L471 AbstractCegarLoop]: Abstraction has 418 states and 537 transitions. [2024-11-20 13:01:53,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.5) internal successors, (164), 7 states have internal predecessors, (164), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:01:53,066 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 537 transitions. [2024-11-20 13:01:53,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-20 13:01:53,068 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:01:53,068 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:01:53,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-20 13:01:53,068 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:01:53,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:01:53,069 INFO L85 PathProgramCache]: Analyzing trace with hash -839661331, now seen corresponding path program 1 times [2024-11-20 13:01:53,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:01:53,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149605315] [2024-11-20 13:01:53,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:01:53,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:01:53,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:53,456 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-20 13:01:53,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:53,483 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-20 13:01:53,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:53,486 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 13:01:53,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:01:53,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149605315] [2024-11-20 13:01:53,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149605315] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:01:53,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139633016] [2024-11-20 13:01:53,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:01:53,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:01:53,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:01:53,490 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) [2024-11-20 13:01:53,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 13:01:53,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:53,878 INFO L255 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 13:01:53,883 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:01:53,982 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-20 13:01:53,983 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 13:01:53,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139633016] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:01:53,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 13:01:53,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-20 13:01:53,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511941756] [2024-11-20 13:01:53,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:01:53,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 13:01:53,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:01:53,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 13:01:53,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-20 13:01:53,985 INFO L87 Difference]: Start difference. First operand 418 states and 537 transitions. Second operand has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:01:54,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:01:54,222 INFO L93 Difference]: Finished difference Result 535 states and 693 transitions. [2024-11-20 13:01:54,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 13:01:54,223 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 171 [2024-11-20 13:01:54,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:01:54,225 INFO L225 Difference]: With dead ends: 535 [2024-11-20 13:01:54,225 INFO L226 Difference]: Without dead ends: 418 [2024-11-20 13:01:54,226 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-20 13:01:54,226 INFO L432 NwaCegarLoop]: 338 mSDtfsCounter, 34 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1432 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 13:01:54,227 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 1432 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 13:01:54,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2024-11-20 13:01:54,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2024-11-20 13:01:54,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 413 states have (on average 1.2832929782082325) internal successors, (530), 413 states have internal predecessors, (530), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 13:01:54,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 536 transitions. [2024-11-20 13:01:54,243 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 536 transitions. Word has length 171 [2024-11-20 13:01:54,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:01:54,243 INFO L471 AbstractCegarLoop]: Abstraction has 418 states and 536 transitions. [2024-11-20 13:01:54,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:01:54,243 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 536 transitions. [2024-11-20 13:01:54,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-20 13:01:54,245 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:01:54,245 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:01:54,257 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-20 13:01:54,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:01:54,449 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:01:54,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:01:54,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1497347126, now seen corresponding path program 1 times [2024-11-20 13:01:54,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:01:54,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417739733] [2024-11-20 13:01:54,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:01:54,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:01:54,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:54,850 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-20 13:01:54,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:54,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-20 13:01:54,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:54,856 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-20 13:01:54,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:01:54,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417739733] [2024-11-20 13:01:54,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417739733] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:01:54,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:01:54,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 13:01:54,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067857408] [2024-11-20 13:01:54,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:01:54,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 13:01:54,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:01:54,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 13:01:54,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-20 13:01:54,859 INFO L87 Difference]: Start difference. First operand 418 states and 536 transitions. Second operand has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 6 states have internal predecessors, (164), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:01:55,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:01:55,228 INFO L93 Difference]: Finished difference Result 541 states and 702 transitions. [2024-11-20 13:01:55,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 13:01:55,229 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 6 states have internal predecessors, (164), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 172 [2024-11-20 13:01:55,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:01:55,232 INFO L225 Difference]: With dead ends: 541 [2024-11-20 13:01:55,232 INFO L226 Difference]: Without dead ends: 424 [2024-11-20 13:01:55,232 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-20 13:01:55,233 INFO L432 NwaCegarLoop]: 345 mSDtfsCounter, 11 mSDsluCounter, 1126 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1471 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 13:01:55,233 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1471 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 13:01:55,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2024-11-20 13:01:55,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 421. [2024-11-20 13:01:55,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 416 states have (on average 1.28125) internal successors, (533), 416 states have internal predecessors, (533), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 13:01:55,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 539 transitions. [2024-11-20 13:01:55,249 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 539 transitions. Word has length 172 [2024-11-20 13:01:55,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:01:55,250 INFO L471 AbstractCegarLoop]: Abstraction has 421 states and 539 transitions. [2024-11-20 13:01:55,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 6 states have internal predecessors, (164), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:01:55,250 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 539 transitions. [2024-11-20 13:01:55,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-20 13:01:55,252 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:01:55,252 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:01:55,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-20 13:01:55,252 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:01:55,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:01:55,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1434150470, now seen corresponding path program 1 times [2024-11-20 13:01:55,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:01:55,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710844893] [2024-11-20 13:01:55,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:01:55,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:01:55,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:55,658 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-20 13:01:55,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:55,661 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-20 13:01:55,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:55,664 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-20 13:01:55,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:01:55,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710844893] [2024-11-20 13:01:55,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710844893] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:01:55,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:01:55,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 13:01:55,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132471545] [2024-11-20 13:01:55,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:01:55,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 13:01:55,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:01:55,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 13:01:55,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-20 13:01:55,667 INFO L87 Difference]: Start difference. First operand 421 states and 539 transitions. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 7 states have internal predecessors, (165), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:01:56,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:01:56,685 INFO L93 Difference]: Finished difference Result 549 states and 711 transitions. [2024-11-20 13:01:56,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 13:01:56,685 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 7 states have internal predecessors, (165), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 173 [2024-11-20 13:01:56,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:01:56,689 INFO L225 Difference]: With dead ends: 549 [2024-11-20 13:01:56,690 INFO L226 Difference]: Without dead ends: 429 [2024-11-20 13:01:56,690 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-20 13:01:56,692 INFO L432 NwaCegarLoop]: 335 mSDtfsCounter, 15 mSDsluCounter, 1637 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1972 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-20 13:01:56,692 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1972 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-20 13:01:56,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2024-11-20 13:01:56,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 425. [2024-11-20 13:01:56,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 420 states have (on average 1.2809523809523808) internal successors, (538), 420 states have internal predecessors, (538), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 13:01:56,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 544 transitions. [2024-11-20 13:01:56,709 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 544 transitions. Word has length 173 [2024-11-20 13:01:56,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:01:56,709 INFO L471 AbstractCegarLoop]: Abstraction has 425 states and 544 transitions. [2024-11-20 13:01:56,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 7 states have internal predecessors, (165), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:01:56,710 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 544 transitions. [2024-11-20 13:01:56,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-20 13:01:56,711 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:01:56,712 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:01:56,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-20 13:01:56,712 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:01:56,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:01:56,713 INFO L85 PathProgramCache]: Analyzing trace with hash -320997590, now seen corresponding path program 1 times [2024-11-20 13:01:56,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:01:56,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639415023] [2024-11-20 13:01:56,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:01:56,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:01:56,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:57,093 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-20 13:01:57,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:57,122 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-20 13:01:57,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:57,127 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 13:01:57,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:01:57,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639415023] [2024-11-20 13:01:57,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639415023] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:01:57,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146434109] [2024-11-20 13:01:57,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:01:57,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:01:57,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:01:57,132 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) [2024-11-20 13:01:57,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 13:01:57,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:57,668 INFO L255 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-20 13:01:57,672 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:01:57,915 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 13:01:57,916 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 13:01:57,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146434109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:01:57,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 13:01:57,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2024-11-20 13:01:57,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916514752] [2024-11-20 13:01:57,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:01:57,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 13:01:57,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:01:57,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 13:01:57,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-20 13:01:57,918 INFO L87 Difference]: Start difference. First operand 425 states and 544 transitions. Second operand has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:01:58,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:01:58,595 INFO L93 Difference]: Finished difference Result 798 states and 1033 transitions. [2024-11-20 13:01:58,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 13:01:58,596 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 173 [2024-11-20 13:01:58,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:01:58,598 INFO L225 Difference]: With dead ends: 798 [2024-11-20 13:01:58,598 INFO L226 Difference]: Without dead ends: 435 [2024-11-20 13:01:58,598 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-20 13:01:58,599 INFO L432 NwaCegarLoop]: 341 mSDtfsCounter, 12 mSDsluCounter, 1344 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-20 13:01:58,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1685 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-20 13:01:58,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2024-11-20 13:01:58,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 431. [2024-11-20 13:01:58,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 426 states have (on average 1.2769953051643192) internal successors, (544), 426 states have internal predecessors, (544), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 13:01:58,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 550 transitions. [2024-11-20 13:01:58,615 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 550 transitions. Word has length 173 [2024-11-20 13:01:58,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:01:58,616 INFO L471 AbstractCegarLoop]: Abstraction has 431 states and 550 transitions. [2024-11-20 13:01:58,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:01:58,616 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 550 transitions. [2024-11-20 13:01:58,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-20 13:01:58,618 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:01:58,618 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:01:58,632 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-20 13:01:58,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-20 13:01:58,822 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:01:58,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:01:58,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1999439869, now seen corresponding path program 1 times [2024-11-20 13:01:58,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:01:58,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088638669] [2024-11-20 13:01:58,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:01:58,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:01:58,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:59,277 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-20 13:01:59,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:59,281 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-20 13:01:59,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:59,284 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 13:01:59,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:01:59,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088638669] [2024-11-20 13:01:59,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088638669] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:01:59,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:01:59,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 13:01:59,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448529460] [2024-11-20 13:01:59,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:01:59,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 13:01:59,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:01:59,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 13:01:59,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-20 13:01:59,287 INFO L87 Difference]: Start difference. First operand 431 states and 550 transitions. Second operand has 10 states, 10 states have (on average 16.7) internal successors, (167), 9 states have internal predecessors, (167), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:01:59,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:01:59,758 INFO L93 Difference]: Finished difference Result 815 states and 1052 transitions. [2024-11-20 13:01:59,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 13:01:59,758 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.7) internal successors, (167), 9 states have internal predecessors, (167), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 174 [2024-11-20 13:01:59,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:01:59,760 INFO L225 Difference]: With dead ends: 815 [2024-11-20 13:01:59,760 INFO L226 Difference]: Without dead ends: 454 [2024-11-20 13:01:59,761 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-20 13:01:59,761 INFO L432 NwaCegarLoop]: 335 mSDtfsCounter, 23 mSDsluCounter, 2003 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2338 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 13:01:59,762 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2338 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-20 13:01:59,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2024-11-20 13:01:59,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 445. [2024-11-20 13:01:59,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 440 states have (on average 1.2772727272727273) internal successors, (562), 440 states have internal predecessors, (562), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 13:01:59,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 568 transitions. [2024-11-20 13:01:59,780 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 568 transitions. Word has length 174 [2024-11-20 13:01:59,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:01:59,780 INFO L471 AbstractCegarLoop]: Abstraction has 445 states and 568 transitions. [2024-11-20 13:01:59,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.7) internal successors, (167), 9 states have internal predecessors, (167), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:01:59,781 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 568 transitions. [2024-11-20 13:01:59,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-20 13:01:59,782 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:01:59,783 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:01:59,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-20 13:01:59,783 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:01:59,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:01:59,784 INFO L85 PathProgramCache]: Analyzing trace with hash -431394854, now seen corresponding path program 1 times [2024-11-20 13:01:59,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:01:59,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75263886] [2024-11-20 13:01:59,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:01:59,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:01:59,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:02:00,387 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-20 13:02:00,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:02:00,391 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-20 13:02:00,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:02:00,393 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 13:02:00,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:02:00,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75263886] [2024-11-20 13:02:00,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75263886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:02:00,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:02:00,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-20 13:02:00,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991037011] [2024-11-20 13:02:00,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:02:00,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 13:02:00,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:02:00,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 13:02:00,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-20 13:02:00,396 INFO L87 Difference]: Start difference. First operand 445 states and 568 transitions. Second operand has 11 states, 11 states have (on average 15.272727272727273) internal successors, (168), 10 states have internal predecessors, (168), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:02:00,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:02:00,929 INFO L93 Difference]: Finished difference Result 839 states and 1085 transitions. [2024-11-20 13:02:00,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 13:02:00,929 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.272727272727273) internal successors, (168), 10 states have internal predecessors, (168), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 175 [2024-11-20 13:02:00,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:02:00,932 INFO L225 Difference]: With dead ends: 839 [2024-11-20 13:02:00,932 INFO L226 Difference]: Without dead ends: 466 [2024-11-20 13:02:00,932 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-11-20 13:02:00,933 INFO L432 NwaCegarLoop]: 342 mSDtfsCounter, 26 mSDsluCounter, 2269 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2611 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-20 13:02:00,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2611 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-20 13:02:00,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2024-11-20 13:02:00,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 451. [2024-11-20 13:02:00,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 446 states have (on average 1.2735426008968609) internal successors, (568), 446 states have internal predecessors, (568), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 13:02:00,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 574 transitions. [2024-11-20 13:02:00,952 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 574 transitions. Word has length 175 [2024-11-20 13:02:00,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:02:00,952 INFO L471 AbstractCegarLoop]: Abstraction has 451 states and 574 transitions. [2024-11-20 13:02:00,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.272727272727273) internal successors, (168), 10 states have internal predecessors, (168), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:02:00,952 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 574 transitions. [2024-11-20 13:02:00,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-20 13:02:00,954 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:02:00,955 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:02:00,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-20 13:02:00,955 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:02:00,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:02:00,956 INFO L85 PathProgramCache]: Analyzing trace with hash -2070629642, now seen corresponding path program 1 times [2024-11-20 13:02:00,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:02:00,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211233420] [2024-11-20 13:02:00,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:02:00,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:02:01,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:02:01,373 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-20 13:02:01,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:02:01,400 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-20 13:02:01,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:02:01,404 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 13:02:01,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:02:01,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211233420] [2024-11-20 13:02:01,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211233420] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:02:01,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783178867] [2024-11-20 13:02:01,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:02:01,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:02:01,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:02:01,408 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) [2024-11-20 13:02:01,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-20 13:02:01,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:02:01,835 INFO L255 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-20 13:02:01,839 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:02:01,933 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 13:02:01,934 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 13:02:01,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783178867] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:02:01,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 13:02:01,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2024-11-20 13:02:01,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905890484] [2024-11-20 13:02:01,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:02:01,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 13:02:01,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:02:01,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 13:02:01,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-20 13:02:01,936 INFO L87 Difference]: Start difference. First operand 451 states and 574 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:02:02,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:02:02,234 INFO L93 Difference]: Finished difference Result 836 states and 1074 transitions. [2024-11-20 13:02:02,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 13:02:02,235 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 175 [2024-11-20 13:02:02,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:02:02,237 INFO L225 Difference]: With dead ends: 836 [2024-11-20 13:02:02,237 INFO L226 Difference]: Without dead ends: 465 [2024-11-20 13:02:02,238 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-20 13:02:02,238 INFO L432 NwaCegarLoop]: 331 mSDtfsCounter, 40 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 1714 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 13:02:02,238 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 1714 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 13:02:02,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2024-11-20 13:02:02,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 455. [2024-11-20 13:02:02,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 450 states have (on average 1.271111111111111) internal successors, (572), 450 states have internal predecessors, (572), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 13:02:02,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 578 transitions. [2024-11-20 13:02:02,256 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 578 transitions. Word has length 175 [2024-11-20 13:02:02,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:02:02,256 INFO L471 AbstractCegarLoop]: Abstraction has 455 states and 578 transitions. [2024-11-20 13:02:02,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:02:02,256 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 578 transitions. [2024-11-20 13:02:02,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-20 13:02:02,259 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:02:02,260 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:02:02,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-20 13:02:02,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:02:02,461 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:02:02,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:02:02,462 INFO L85 PathProgramCache]: Analyzing trace with hash 338363919, now seen corresponding path program 1 times [2024-11-20 13:02:02,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:02:02,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455417501] [2024-11-20 13:02:02,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:02:02,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:02:02,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:02:02,820 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-20 13:02:02,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:02:02,848 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-20 13:02:02,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:02:02,851 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 13:02:02,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:02:02,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455417501] [2024-11-20 13:02:02,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455417501] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:02:02,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774281852] [2024-11-20 13:02:02,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:02:02,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:02:02,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:02:02,855 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) [2024-11-20 13:02:02,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-20 13:02:03,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:02:03,353 INFO L255 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-20 13:02:03,357 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:02:03,578 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-20 13:02:03,579 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 13:02:03,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774281852] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:02:03,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 13:02:03,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2024-11-20 13:02:03,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670565952] [2024-11-20 13:02:03,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:02:03,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 13:02:03,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:02:03,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 13:02:03,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-20 13:02:03,582 INFO L87 Difference]: Start difference. First operand 455 states and 578 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:02:03,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:02:03,871 INFO L93 Difference]: Finished difference Result 584 states and 749 transitions. [2024-11-20 13:02:03,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 13:02:03,872 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 175 [2024-11-20 13:02:03,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:02:03,876 INFO L225 Difference]: With dead ends: 584 [2024-11-20 13:02:03,877 INFO L226 Difference]: Without dead ends: 460 [2024-11-20 13:02:03,877 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-20 13:02:03,878 INFO L432 NwaCegarLoop]: 342 mSDtfsCounter, 12 mSDsluCounter, 1361 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1703 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 13:02:03,878 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1703 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 13:02:03,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2024-11-20 13:02:03,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 455. [2024-11-20 13:02:03,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 450 states have (on average 1.271111111111111) internal successors, (572), 450 states have internal predecessors, (572), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 13:02:03,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 578 transitions. [2024-11-20 13:02:03,895 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 578 transitions. Word has length 175 [2024-11-20 13:02:03,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:02:03,896 INFO L471 AbstractCegarLoop]: Abstraction has 455 states and 578 transitions. [2024-11-20 13:02:03,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:02:03,896 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 578 transitions. [2024-11-20 13:02:03,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-20 13:02:03,898 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:02:03,898 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:02:03,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-20 13:02:04,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:02:04,099 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:02:04,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:02:04,100 INFO L85 PathProgramCache]: Analyzing trace with hash 590599193, now seen corresponding path program 1 times [2024-11-20 13:02:04,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:02:04,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855846082] [2024-11-20 13:02:04,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:02:04,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:02:04,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:02:04,575 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-20 13:02:04,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:02:04,579 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-20 13:02:04,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:02:04,582 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-20 13:02:04,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:02:04,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855846082] [2024-11-20 13:02:04,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855846082] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:02:04,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:02:04,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 13:02:04,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242243362] [2024-11-20 13:02:04,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:02:04,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 13:02:04,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:02:04,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 13:02:04,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-20 13:02:04,584 INFO L87 Difference]: Start difference. First operand 455 states and 578 transitions. Second operand has 10 states, 10 states have (on average 16.8) internal successors, (168), 9 states have internal predecessors, (168), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:02:04,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:02:04,976 INFO L93 Difference]: Finished difference Result 592 states and 761 transitions. [2024-11-20 13:02:04,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 13:02:04,977 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.8) internal successors, (168), 9 states have internal predecessors, (168), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 176 [2024-11-20 13:02:04,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:02:04,979 INFO L225 Difference]: With dead ends: 592 [2024-11-20 13:02:04,979 INFO L226 Difference]: Without dead ends: 468 [2024-11-20 13:02:04,979 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-20 13:02:04,980 INFO L432 NwaCegarLoop]: 335 mSDtfsCounter, 23 mSDsluCounter, 2252 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2587 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 13:02:04,980 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2587 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-20 13:02:04,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2024-11-20 13:02:04,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 462. [2024-11-20 13:02:04,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 457 states have (on average 1.2713347921225382) internal successors, (581), 457 states have internal predecessors, (581), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 13:02:04,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 587 transitions. [2024-11-20 13:02:04,999 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 587 transitions. Word has length 176 [2024-11-20 13:02:04,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:02:05,000 INFO L471 AbstractCegarLoop]: Abstraction has 462 states and 587 transitions. [2024-11-20 13:02:05,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.8) internal successors, (168), 9 states have internal predecessors, (168), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:02:05,000 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 587 transitions. [2024-11-20 13:02:05,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-20 13:02:05,001 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:02:05,001 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:02:05,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-20 13:02:05,002 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:02:05,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:02:05,002 INFO L85 PathProgramCache]: Analyzing trace with hash 2015584181, now seen corresponding path program 1 times [2024-11-20 13:02:05,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:02:05,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316899577] [2024-11-20 13:02:05,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:02:05,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:02:05,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:02:05,330 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-20 13:02:05,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:02:05,355 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-20 13:02:05,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:02:05,358 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 13:02:05,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:02:05,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316899577] [2024-11-20 13:02:05,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316899577] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:02:05,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742617216] [2024-11-20 13:02:05,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:02:05,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:02:05,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:02:05,361 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) [2024-11-20 13:02:05,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-20 13:02:05,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:02:05,834 INFO L255 TraceCheckSpWp]: Trace formula consists of 771 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-20 13:02:05,840 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:02:05,946 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-20 13:02:05,947 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 13:02:05,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742617216] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:02:05,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 13:02:05,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2024-11-20 13:02:05,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102207044] [2024-11-20 13:02:05,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:02:05,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 13:02:05,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:02:05,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 13:02:05,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-20 13:02:05,950 INFO L87 Difference]: Start difference. First operand 462 states and 587 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:02:06,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:02:06,192 INFO L93 Difference]: Finished difference Result 598 states and 767 transitions. [2024-11-20 13:02:06,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 13:02:06,193 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 176 [2024-11-20 13:02:06,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:02:06,195 INFO L225 Difference]: With dead ends: 598 [2024-11-20 13:02:06,195 INFO L226 Difference]: Without dead ends: 467 [2024-11-20 13:02:06,196 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-20 13:02:06,197 INFO L432 NwaCegarLoop]: 333 mSDtfsCounter, 17 mSDsluCounter, 1377 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 13:02:06,197 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1710 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 13:02:06,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2024-11-20 13:02:06,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 464. [2024-11-20 13:02:06,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 459 states have (on average 1.2701525054466232) internal successors, (583), 459 states have internal predecessors, (583), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 13:02:06,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 589 transitions. [2024-11-20 13:02:06,212 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 589 transitions. Word has length 176 [2024-11-20 13:02:06,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:02:06,213 INFO L471 AbstractCegarLoop]: Abstraction has 464 states and 589 transitions. [2024-11-20 13:02:06,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:02:06,213 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 589 transitions. [2024-11-20 13:02:06,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-20 13:02:06,214 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:02:06,214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:02:06,227 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-20 13:02:06,415 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,SelfDestructingSolverStorable21 [2024-11-20 13:02:06,415 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:02:06,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:02:06,416 INFO L85 PathProgramCache]: Analyzing trace with hash -516459777, now seen corresponding path program 1 times [2024-11-20 13:02:06,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:02:06,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052376527] [2024-11-20 13:02:06,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:02:06,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:02:06,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:02:06,943 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-20 13:02:06,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:02:06,947 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-20 13:02:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:02:06,950 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-20 13:02:06,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:02:06,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052376527] [2024-11-20 13:02:06,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052376527] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:02:06,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:02:06,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-20 13:02:06,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003728660] [2024-11-20 13:02:06,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:02:06,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 13:02:06,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:02:06,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 13:02:06,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-20 13:02:06,953 INFO L87 Difference]: Start difference. First operand 464 states and 589 transitions. Second operand has 11 states, 11 states have (on average 15.363636363636363) internal successors, (169), 10 states have internal predecessors, (169), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:02:07,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:02:07,524 INFO L93 Difference]: Finished difference Result 609 states and 783 transitions. [2024-11-20 13:02:07,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 13:02:07,525 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.363636363636363) internal successors, (169), 10 states have internal predecessors, (169), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 177 [2024-11-20 13:02:07,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:02:07,527 INFO L225 Difference]: With dead ends: 609 [2024-11-20 13:02:07,527 INFO L226 Difference]: Without dead ends: 476 [2024-11-20 13:02:07,528 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-11-20 13:02:07,528 INFO L432 NwaCegarLoop]: 342 mSDtfsCounter, 29 mSDsluCounter, 2239 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 2581 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-20 13:02:07,528 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 2581 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-20 13:02:07,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2024-11-20 13:02:07,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 467. [2024-11-20 13:02:07,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 462 states have (on average 1.2683982683982684) internal successors, (586), 462 states have internal predecessors, (586), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 13:02:07,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 592 transitions. [2024-11-20 13:02:07,544 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 592 transitions. Word has length 177 [2024-11-20 13:02:07,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:02:07,544 INFO L471 AbstractCegarLoop]: Abstraction has 467 states and 592 transitions. [2024-11-20 13:02:07,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.363636363636363) internal successors, (169), 10 states have internal predecessors, (169), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:02:07,545 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 592 transitions. [2024-11-20 13:02:07,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-20 13:02:07,546 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:02:07,546 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:02:07,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-20 13:02:07,546 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:02:07,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:02:07,547 INFO L85 PathProgramCache]: Analyzing trace with hash 708401891, now seen corresponding path program 1 times [2024-11-20 13:02:07,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:02:07,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987136631] [2024-11-20 13:02:07,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:02:07,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:02:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:02:07,944 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-20 13:02:07,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:02:07,966 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-20 13:02:07,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:02:07,969 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 13:02:07,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:02:07,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987136631] [2024-11-20 13:02:07,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987136631] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:02:07,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764445810] [2024-11-20 13:02:07,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:02:07,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:02:07,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:02:07,972 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) [2024-11-20 13:02:07,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-20 13:02:08,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:02:08,447 INFO L255 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-20 13:02:08,449 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:02:08,644 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 13:02:08,644 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 13:02:08,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764445810] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:02:08,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 13:02:08,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2024-11-20 13:02:08,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401717527] [2024-11-20 13:02:08,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:02:08,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 13:02:08,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:02:08,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 13:02:08,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-20 13:02:08,647 INFO L87 Difference]: Start difference. First operand 467 states and 592 transitions. Second operand has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:02:08,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:02:08,940 INFO L93 Difference]: Finished difference Result 867 states and 1112 transitions. [2024-11-20 13:02:08,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 13:02:08,940 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 177 [2024-11-20 13:02:08,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:02:08,942 INFO L225 Difference]: With dead ends: 867 [2024-11-20 13:02:08,942 INFO L226 Difference]: Without dead ends: 477 [2024-11-20 13:02:08,943 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-20 13:02:08,944 INFO L432 NwaCegarLoop]: 342 mSDtfsCounter, 10 mSDsluCounter, 1361 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1703 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 13:02:08,944 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1703 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 13:02:08,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2024-11-20 13:02:08,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 467. [2024-11-20 13:02:08,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 462 states have (on average 1.2683982683982684) internal successors, (586), 462 states have internal predecessors, (586), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 13:02:08,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 592 transitions. [2024-11-20 13:02:08,958 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 592 transitions. Word has length 177 [2024-11-20 13:02:08,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:02:08,958 INFO L471 AbstractCegarLoop]: Abstraction has 467 states and 592 transitions. [2024-11-20 13:02:08,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:02:08,959 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 592 transitions. [2024-11-20 13:02:08,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-20 13:02:08,960 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:02:08,960 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:02:08,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-20 13:02:09,161 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,SelfDestructingSolverStorable23 [2024-11-20 13:02:09,161 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:02:09,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:02:09,162 INFO L85 PathProgramCache]: Analyzing trace with hash 474523284, now seen corresponding path program 1 times [2024-11-20 13:02:09,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:02:09,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119465459] [2024-11-20 13:02:09,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:02:09,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:02:09,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:02:09,523 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-20 13:02:09,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:02:09,548 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-20 13:02:09,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:02:09,551 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 13:02:09,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:02:09,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119465459] [2024-11-20 13:02:09,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119465459] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:02:09,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002551067] [2024-11-20 13:02:09,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:02:09,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:02:09,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:02:09,555 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) [2024-11-20 13:02:09,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-20 13:02:10,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:02:10,143 INFO L255 TraceCheckSpWp]: Trace formula consists of 773 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-20 13:02:10,145 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:02:10,160 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:02:10,160 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 13:02:10,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002551067] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:02:10,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 13:02:10,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2024-11-20 13:02:10,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678474379] [2024-11-20 13:02:10,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:02:10,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 13:02:10,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:02:10,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 13:02:10,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 13:02:10,163 INFO L87 Difference]: Start difference. First operand 467 states and 592 transitions. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 13:02:10,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:02:10,191 INFO L93 Difference]: Finished difference Result 820 states and 1043 transitions. [2024-11-20 13:02:10,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 13:02:10,194 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 178 [2024-11-20 13:02:10,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:02:10,197 INFO L225 Difference]: With dead ends: 820 [2024-11-20 13:02:10,198 INFO L226 Difference]: Without dead ends: 470 [2024-11-20 13:02:10,200 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 13:02:10,200 INFO L432 NwaCegarLoop]: 353 mSDtfsCounter, 0 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 13:02:10,201 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1055 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 13:02:10,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2024-11-20 13:02:10,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 470. [2024-11-20 13:02:10,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 464 states have (on average 1.269396551724138) internal successors, (589), 465 states have internal predecessors, (589), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-20 13:02:10,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 596 transitions. [2024-11-20 13:02:10,216 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 596 transitions. Word has length 178 [2024-11-20 13:02:10,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:02:10,216 INFO L471 AbstractCegarLoop]: Abstraction has 470 states and 596 transitions. [2024-11-20 13:02:10,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 13:02:10,220 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 596 transitions. [2024-11-20 13:02:10,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-20 13:02:10,221 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:02:10,222 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:02:10,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-20 13:02:10,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-20 13:02:10,426 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:02:10,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:02:10,426 INFO L85 PathProgramCache]: Analyzing trace with hash -266126026, now seen corresponding path program 1 times [2024-11-20 13:02:10,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:02:10,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575236589] [2024-11-20 13:02:10,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:02:10,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:02:10,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:02:10,849 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-20 13:02:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:02:10,925 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-11-20 13:02:10,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:02:10,931 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 13:02:10,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:02:10,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575236589] [2024-11-20 13:02:10,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575236589] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:02:10,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568684600] [2024-11-20 13:02:10,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:02:10,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:02:10,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:02:10,935 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 13:02:10,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-20 13:02:11,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:02:11,530 INFO L255 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-20 13:02:11,533 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:02:12,014 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-20 13:02:12,014 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 13:02:12,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568684600] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:02:12,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 13:02:12,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2024-11-20 13:02:12,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086901480] [2024-11-20 13:02:12,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:02:12,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 13:02:12,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:02:12,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 13:02:12,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2024-11-20 13:02:12,016 INFO L87 Difference]: Start difference. First operand 470 states and 596 transitions. Second operand has 10 states, 10 states have (on average 17.1) internal successors, (171), 10 states have internal predecessors, (171), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:02:12,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:02:12,630 INFO L93 Difference]: Finished difference Result 621 states and 795 transitions. [2024-11-20 13:02:12,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 13:02:12,630 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.1) internal successors, (171), 10 states have internal predecessors, (171), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 180 [2024-11-20 13:02:12,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:02:12,632 INFO L225 Difference]: With dead ends: 621 [2024-11-20 13:02:12,632 INFO L226 Difference]: Without dead ends: 485 [2024-11-20 13:02:12,633 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2024-11-20 13:02:12,633 INFO L432 NwaCegarLoop]: 343 mSDtfsCounter, 17 mSDsluCounter, 2199 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2542 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-20 13:02:12,634 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2542 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-20 13:02:12,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2024-11-20 13:02:12,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 482. [2024-11-20 13:02:12,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 476 states have (on average 1.26890756302521) internal successors, (604), 477 states have internal predecessors, (604), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-20 13:02:12,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 611 transitions. [2024-11-20 13:02:12,649 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 611 transitions. Word has length 180 [2024-11-20 13:02:12,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:02:12,649 INFO L471 AbstractCegarLoop]: Abstraction has 482 states and 611 transitions. [2024-11-20 13:02:12,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.1) internal successors, (171), 10 states have internal predecessors, (171), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:02:12,650 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 611 transitions. [2024-11-20 13:02:12,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-20 13:02:12,651 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:02:12,651 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:02:12,665 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-20 13:02:12,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-20 13:02:12,852 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:02:12,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:02:12,853 INFO L85 PathProgramCache]: Analyzing trace with hash -397424195, now seen corresponding path program 1 times [2024-11-20 13:02:12,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:02:12,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363993144] [2024-11-20 13:02:12,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:02:12,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:02:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:02:13,372 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-20 13:02:13,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:02:13,432 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-11-20 13:02:13,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:02:13,437 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 13:02:13,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:02:13,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363993144] [2024-11-20 13:02:13,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363993144] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:02:13,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023318147] [2024-11-20 13:02:13,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:02:13,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:02:13,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:02:13,441 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 13:02:13,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-20 13:02:13,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:02:13,963 INFO L255 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 110 conjuncts are in the unsatisfiable core [2024-11-20 13:02:13,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:02:13,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-20 13:02:14,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2024-11-20 13:02:14,310 INFO L349 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2024-11-20 13:02:14,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 29 [2024-11-20 13:02:14,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2024-11-20 13:02:14,520 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-20 13:02:14,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 39