./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.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 1a17e1f9edfd37607fb472869452b377d4af1281c9808dec0371b4f943952037 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 05:20:15,751 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 05:20:15,796 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 05:20:15,800 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 05:20:15,802 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 05:20:15,827 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 05:20:15,830 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 05:20:15,830 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 05:20:15,831 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 05:20:15,831 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 05:20:15,831 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 05:20:15,831 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 05:20:15,832 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 05:20:15,832 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 05:20:15,832 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 05:20:15,833 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 05:20:15,833 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 05:20:15,835 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 05:20:15,836 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 05:20:15,836 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 05:20:15,836 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 05:20:15,837 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 05:20:15,837 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 05:20:15,837 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 05:20:15,837 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 05:20:15,837 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 05:20:15,838 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 05:20:15,838 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 05:20:15,838 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 05:20:15,838 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 05:20:15,838 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 05:20:15,839 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 05:20:15,839 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 05:20:15,839 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 05:20:15,839 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 05:20:15,840 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 05:20:15,840 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 05:20:15,840 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 05:20:15,844 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 05:20:15,844 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 05:20:15,845 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 05:20:15,845 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 05:20:15,845 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a17e1f9edfd37607fb472869452b377d4af1281c9808dec0371b4f943952037 [2024-11-19 05:20:16,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 05:20:16,090 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 05:20:16,094 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 05:20:16,095 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 05:20:16,096 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 05:20:16,097 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i [2024-11-19 05:20:17,741 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 05:20:17,970 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 05:20:17,971 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i [2024-11-19 05:20:17,993 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25bc8670d/228531abfc7c46099111808369682fae/FLAGb085091dc [2024-11-19 05:20:18,303 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25bc8670d/228531abfc7c46099111808369682fae [2024-11-19 05:20:18,305 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 05:20:18,307 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 05:20:18,307 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 05:20:18,308 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 05:20:18,312 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 05:20:18,313 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:20:18" (1/1) ... [2024-11-19 05:20:18,313 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33c3fae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:18, skipping insertion in model container [2024-11-19 05:20:18,314 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:20:18" (1/1) ... [2024-11-19 05:20:18,367 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 05:20:18,691 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_SAX_test5-1.i[33021,33034] [2024-11-19 05:20:18,824 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_SAX_test5-1.i[49681,49694] [2024-11-19 05:20:18,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 05:20:18,840 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 05:20:18,861 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_SAX_test5-1.i[33021,33034] [2024-11-19 05:20:18,933 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_SAX_test5-1.i[49681,49694] [2024-11-19 05:20:18,942 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 05:20:18,979 INFO L204 MainTranslator]: Completed translation [2024-11-19 05:20:18,979 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:18 WrapperNode [2024-11-19 05:20:18,979 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 05:20:18,981 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 05:20:18,981 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 05:20:18,981 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 05:20:18,987 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:18" (1/1) ... [2024-11-19 05:20:19,012 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:18" (1/1) ... [2024-11-19 05:20:19,070 INFO L138 Inliner]: procedures = 177, calls = 373, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2036 [2024-11-19 05:20:19,070 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 05:20:19,071 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 05:20:19,071 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 05:20:19,071 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 05:20:19,084 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:18" (1/1) ... [2024-11-19 05:20:19,084 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:18" (1/1) ... [2024-11-19 05:20:19,102 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:18" (1/1) ... [2024-11-19 05:20:19,204 INFO L175 MemorySlicer]: Split 349 memory accesses to 3 slices as follows [2, 24, 323]. 93 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 83 writes are split as follows [0, 1, 82]. [2024-11-19 05:20:19,207 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:18" (1/1) ... [2024-11-19 05:20:19,207 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:18" (1/1) ... [2024-11-19 05:20:19,252 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:18" (1/1) ... [2024-11-19 05:20:19,275 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:18" (1/1) ... [2024-11-19 05:20:19,283 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:18" (1/1) ... [2024-11-19 05:20:19,293 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:18" (1/1) ... [2024-11-19 05:20:19,307 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 05:20:19,309 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 05:20:19,309 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 05:20:19,309 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 05:20:19,310 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:18" (1/1) ... [2024-11-19 05:20:19,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 05:20:19,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 05:20:19,339 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) [2024-11-19 05:20:19,340 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 [2024-11-19 05:20:19,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 05:20:19,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 05:20:19,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 05:20:19,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-19 05:20:19,382 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-19 05:20:19,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 05:20:19,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 05:20:19,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 05:20:19,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-19 05:20:19,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-19 05:20:19,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-19 05:20:19,383 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-19 05:20:19,383 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-19 05:20:19,383 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-19 05:20:19,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 05:20:19,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 05:20:19,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-19 05:20:19,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-19 05:20:19,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-19 05:20:19,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 05:20:19,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-19 05:20:19,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-19 05:20:19,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-19 05:20:19,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 05:20:19,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 05:20:19,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 05:20:19,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 05:20:19,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 05:20:19,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 05:20:19,589 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 05:20:19,591 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 05:20:21,406 INFO L? ?]: Removed 483 outVars from TransFormulas that were not future-live. [2024-11-19 05:20:21,406 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 05:20:21,426 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 05:20:21,426 INFO L316 CfgBuilder]: Removed 83 assume(true) statements. [2024-11-19 05:20:21,426 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:20:21 BoogieIcfgContainer [2024-11-19 05:20:21,426 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 05:20:21,428 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 05:20:21,429 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 05:20:21,431 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 05:20:21,432 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:20:18" (1/3) ... [2024-11-19 05:20:21,432 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b927690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:20:21, skipping insertion in model container [2024-11-19 05:20:21,432 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:18" (2/3) ... [2024-11-19 05:20:21,433 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b927690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:20:21, skipping insertion in model container [2024-11-19 05:20:21,433 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:20:21" (3/3) ... [2024-11-19 05:20:21,434 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test5-1.i [2024-11-19 05:20:21,448 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 05:20:21,449 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-19 05:20:21,506 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 05:20:21,512 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;@114b114a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 05:20:21,512 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-19 05:20:21,519 INFO L276 IsEmpty]: Start isEmpty. Operand has 569 states, 553 states have (on average 1.623869801084991) internal successors, (898), 560 states have internal predecessors, (898), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-19 05:20:21,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-19 05:20:21,528 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 05:20:21,529 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:20:21,529 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 05:20:21,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:20:21,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1010421804, now seen corresponding path program 1 times [2024-11-19 05:20:21,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:20:21,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036675780] [2024-11-19 05:20:21,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:20:21,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:20:21,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:20:21,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 05:20:21,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:20:21,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036675780] [2024-11-19 05:20:21,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036675780] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:20:21,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:20:21,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 05:20:21,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594876402] [2024-11-19 05:20:21,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:20:21,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 05:20:21,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:20:21,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 05:20:21,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 05:20:21,728 INFO L87 Difference]: Start difference. First operand has 569 states, 553 states have (on average 1.623869801084991) internal successors, (898), 560 states have internal predecessors, (898), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-11-19 05:20:21,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 05:20:21,822 INFO L93 Difference]: Finished difference Result 1136 states and 1843 transitions. [2024-11-19 05:20:21,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 05:20:21,824 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2024-11-19 05:20:21,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 05:20:21,836 INFO L225 Difference]: With dead ends: 1136 [2024-11-19 05:20:21,836 INFO L226 Difference]: Without dead ends: 565 [2024-11-19 05:20:21,841 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 [2024-11-19 05:20:21,844 INFO L432 NwaCegarLoop]: 828 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, 828 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 [2024-11-19 05:20:21,845 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 828 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 05:20:21,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2024-11-19 05:20:21,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 565. [2024-11-19 05:20:21,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 550 states have (on average 1.4581818181818182) internal successors, (802), 556 states have internal predecessors, (802), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-19 05:20:21,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 824 transitions. [2024-11-19 05:20:21,909 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 824 transitions. Word has length 8 [2024-11-19 05:20:21,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 05:20:21,909 INFO L471 AbstractCegarLoop]: Abstraction has 565 states and 824 transitions. [2024-11-19 05:20:21,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-11-19 05:20:21,910 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 824 transitions. [2024-11-19 05:20:21,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-19 05:20:21,913 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 05:20:21,913 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] [2024-11-19 05:20:21,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 05:20:21,913 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 05:20:21,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:20:21,914 INFO L85 PathProgramCache]: Analyzing trace with hash 76912623, now seen corresponding path program 1 times [2024-11-19 05:20:21,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:20:21,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945459161] [2024-11-19 05:20:21,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:20:21,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:20:21,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:20:22,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 05:20:22,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:20:22,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945459161] [2024-11-19 05:20:22,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945459161] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:20:22,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:20:22,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 05:20:22,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267996677] [2024-11-19 05:20:22,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:20:22,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 05:20:22,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:20:22,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 05:20:22,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 05:20:22,172 INFO L87 Difference]: Start difference. First operand 565 states and 824 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-11-19 05:20:22,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 05:20:22,229 INFO L93 Difference]: Finished difference Result 1292 states and 1895 transitions. [2024-11-19 05:20:22,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 05:20:22,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2024-11-19 05:20:22,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 05:20:22,237 INFO L225 Difference]: With dead ends: 1292 [2024-11-19 05:20:22,237 INFO L226 Difference]: Without dead ends: 1117 [2024-11-19 05:20:22,238 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 [2024-11-19 05:20:22,239 INFO L432 NwaCegarLoop]: 824 mSDtfsCounter, 787 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 1641 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 05:20:22,240 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 1641 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 05:20:22,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2024-11-19 05:20:22,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 566. [2024-11-19 05:20:22,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 551 states have (on average 1.4573502722323048) internal successors, (803), 557 states have internal predecessors, (803), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-19 05:20:22,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 825 transitions. [2024-11-19 05:20:22,267 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 825 transitions. Word has length 62 [2024-11-19 05:20:22,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 05:20:22,267 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 825 transitions. [2024-11-19 05:20:22,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-11-19 05:20:22,268 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 825 transitions. [2024-11-19 05:20:22,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-19 05:20:22,275 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 05:20:22,275 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:20:22,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 05:20:22,276 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 05:20:22,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:20:22,276 INFO L85 PathProgramCache]: Analyzing trace with hash 41978054, now seen corresponding path program 1 times [2024-11-19 05:20:22,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:20:22,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726475305] [2024-11-19 05:20:22,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:20:22,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:20:22,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:20:22,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 05:20:22,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:20:22,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726475305] [2024-11-19 05:20:22,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726475305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:20:22,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:20:22,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 05:20:22,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96127948] [2024-11-19 05:20:22,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:20:22,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 05:20:22,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:20:22,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 05:20:22,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 05:20:22,756 INFO L87 Difference]: Start difference. First operand 566 states and 825 transitions. Second operand has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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) [2024-11-19 05:20:22,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 05:20:22,908 INFO L93 Difference]: Finished difference Result 1132 states and 1650 transitions. [2024-11-19 05:20:22,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 05:20:22,908 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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 208 [2024-11-19 05:20:22,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 05:20:22,911 INFO L225 Difference]: With dead ends: 1132 [2024-11-19 05:20:22,911 INFO L226 Difference]: Without dead ends: 569 [2024-11-19 05:20:22,912 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 05:20:22,913 INFO L432 NwaCegarLoop]: 796 mSDtfsCounter, 105 mSDsluCounter, 1499 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 2295 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 05:20:22,913 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 2295 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 05:20:22,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2024-11-19 05:20:22,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 566. [2024-11-19 05:20:22,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 551 states have (on average 1.4446460980036298) internal successors, (796), 557 states have internal predecessors, (796), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-19 05:20:22,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 818 transitions. [2024-11-19 05:20:22,938 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 818 transitions. Word has length 208 [2024-11-19 05:20:22,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 05:20:22,939 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 818 transitions. [2024-11-19 05:20:22,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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) [2024-11-19 05:20:22,943 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 818 transitions. [2024-11-19 05:20:22,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-19 05:20:22,950 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 05:20:22,950 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:20:22,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 05:20:22,951 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 05:20:22,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:20:22,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1497571398, now seen corresponding path program 1 times [2024-11-19 05:20:22,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:20:22,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021507665] [2024-11-19 05:20:22,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:20:22,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:20:23,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:20:23,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 05:20:23,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:20:23,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021507665] [2024-11-19 05:20:23,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021507665] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:20:23,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:20:23,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 05:20:23,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305413637] [2024-11-19 05:20:23,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:20:23,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 05:20:23,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:20:23,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 05:20:23,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 05:20:23,179 INFO L87 Difference]: Start difference. First operand 566 states and 818 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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) [2024-11-19 05:20:23,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 05:20:23,245 INFO L93 Difference]: Finished difference Result 1258 states and 1822 transitions. [2024-11-19 05:20:23,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 05:20:23,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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 208 [2024-11-19 05:20:23,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 05:20:23,250 INFO L225 Difference]: With dead ends: 1258 [2024-11-19 05:20:23,250 INFO L226 Difference]: Without dead ends: 695 [2024-11-19 05:20:23,251 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 [2024-11-19 05:20:23,252 INFO L432 NwaCegarLoop]: 816 mSDtfsCounter, 134 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 1625 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 05:20:23,252 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 1625 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 05:20:23,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2024-11-19 05:20:23,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2024-11-19 05:20:23,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 680 states have (on average 1.4470588235294117) internal successors, (984), 686 states have internal predecessors, (984), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-19 05:20:23,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1006 transitions. [2024-11-19 05:20:23,273 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1006 transitions. Word has length 208 [2024-11-19 05:20:23,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 05:20:23,274 INFO L471 AbstractCegarLoop]: Abstraction has 695 states and 1006 transitions. [2024-11-19 05:20:23,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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) [2024-11-19 05:20:23,275 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1006 transitions. [2024-11-19 05:20:23,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-11-19 05:20:23,279 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 05:20:23,279 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:20:23,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 05:20:23,280 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 05:20:23,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:20:23,281 INFO L85 PathProgramCache]: Analyzing trace with hash 2136259473, now seen corresponding path program 1 times [2024-11-19 05:20:23,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:20:23,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938499116] [2024-11-19 05:20:23,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:20:23,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:20:23,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:20:23,709 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 05:20:23,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:20:23,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938499116] [2024-11-19 05:20:23,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938499116] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:20:23,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:20:23,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 05:20:23,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289537348] [2024-11-19 05:20:23,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:20:23,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 05:20:23,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:20:23,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 05:20:23,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 05:20:23,715 INFO L87 Difference]: Start difference. First operand 695 states and 1006 transitions. Second operand has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 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) [2024-11-19 05:20:23,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 05:20:23,800 INFO L93 Difference]: Finished difference Result 1216 states and 1755 transitions. [2024-11-19 05:20:23,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 05:20:23,801 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 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 223 [2024-11-19 05:20:23,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 05:20:23,804 INFO L225 Difference]: With dead ends: 1216 [2024-11-19 05:20:23,804 INFO L226 Difference]: Without dead ends: 653 [2024-11-19 05:20:23,806 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 [2024-11-19 05:20:23,807 INFO L432 NwaCegarLoop]: 715 mSDtfsCounter, 30 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 2126 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 [2024-11-19 05:20:23,809 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 2126 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 05:20:23,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2024-11-19 05:20:23,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 653. [2024-11-19 05:20:23,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 638 states have (on average 1.421630094043887) internal successors, (907), 644 states have internal predecessors, (907), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-19 05:20:23,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 929 transitions. [2024-11-19 05:20:23,827 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 929 transitions. Word has length 223 [2024-11-19 05:20:23,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 05:20:23,829 INFO L471 AbstractCegarLoop]: Abstraction has 653 states and 929 transitions. [2024-11-19 05:20:23,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 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) [2024-11-19 05:20:23,829 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 929 transitions. [2024-11-19 05:20:23,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-11-19 05:20:23,831 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 05:20:23,832 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:20:23,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 05:20:23,834 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 05:20:23,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:20:23,835 INFO L85 PathProgramCache]: Analyzing trace with hash -659136995, now seen corresponding path program 1 times [2024-11-19 05:20:23,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:20:23,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616836541] [2024-11-19 05:20:23,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:20:23,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:20:23,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:20:24,190 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 05:20:24,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:20:24,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616836541] [2024-11-19 05:20:24,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616836541] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:20:24,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:20:24,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 05:20:24,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256347808] [2024-11-19 05:20:24,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:20:24,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 05:20:24,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:20:24,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 05:20:24,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 05:20:24,193 INFO L87 Difference]: Start difference. First operand 653 states and 929 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 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) [2024-11-19 05:20:24,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 05:20:24,253 INFO L93 Difference]: Finished difference Result 1467 states and 2089 transitions. [2024-11-19 05:20:24,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 05:20:24,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 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 223 [2024-11-19 05:20:24,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 05:20:24,259 INFO L225 Difference]: With dead ends: 1467 [2024-11-19 05:20:24,260 INFO L226 Difference]: Without dead ends: 946 [2024-11-19 05:20:24,261 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 [2024-11-19 05:20:24,262 INFO L432 NwaCegarLoop]: 927 mSDtfsCounter, 455 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 1647 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 05:20:24,263 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 1647 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 05:20:24,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2024-11-19 05:20:24,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 944. [2024-11-19 05:20:24,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 944 states, 921 states have (on average 1.4223669923995657) internal successors, (1310), 932 states have internal predecessors, (1310), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 11 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-19 05:20:24,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 1348 transitions. [2024-11-19 05:20:24,289 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 1348 transitions. Word has length 223 [2024-11-19 05:20:24,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 05:20:24,290 INFO L471 AbstractCegarLoop]: Abstraction has 944 states and 1348 transitions. [2024-11-19 05:20:24,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 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) [2024-11-19 05:20:24,290 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 1348 transitions. [2024-11-19 05:20:24,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2024-11-19 05:20:24,293 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 05:20:24,293 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:20:24,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 05:20:24,293 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 05:20:24,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:20:24,294 INFO L85 PathProgramCache]: Analyzing trace with hash 967606176, now seen corresponding path program 1 times [2024-11-19 05:20:24,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:20:24,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179880331] [2024-11-19 05:20:24,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:20:24,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:20:24,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:20:24,771 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 05:20:24,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:20:24,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179880331] [2024-11-19 05:20:24,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179880331] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 05:20:24,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922197034] [2024-11-19 05:20:24,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:20:24,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 05:20:24,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 05:20:24,788 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) [2024-11-19 05:20:24,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 05:20:25,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:20:25,221 INFO L255 TraceCheckSpWp]: Trace formula consists of 1194 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 05:20:25,234 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 05:20:25,275 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-19 05:20:25,275 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 05:20:25,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922197034] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:20:25,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 05:20:25,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-19 05:20:25,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847786756] [2024-11-19 05:20:25,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:20:25,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 05:20:25,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:20:25,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 05:20:25,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 05:20:25,281 INFO L87 Difference]: Start difference. First operand 944 states and 1348 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 05:20:25,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 05:20:25,355 INFO L93 Difference]: Finished difference Result 1303 states and 1888 transitions. [2024-11-19 05:20:25,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 05:20:25,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 238 [2024-11-19 05:20:25,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 05:20:25,360 INFO L225 Difference]: With dead ends: 1303 [2024-11-19 05:20:25,360 INFO L226 Difference]: Without dead ends: 984 [2024-11-19 05:20:25,404 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 05:20:25,405 INFO L432 NwaCegarLoop]: 714 mSDtfsCounter, 8 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1413 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 05:20:25,408 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1413 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 05:20:25,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2024-11-19 05:20:25,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 984. [2024-11-19 05:20:25,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 961 states have (on average 1.4047866805411031) internal successors, (1350), 972 states have internal predecessors, (1350), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 11 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-19 05:20:25,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1388 transitions. [2024-11-19 05:20:25,433 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1388 transitions. Word has length 238 [2024-11-19 05:20:25,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 05:20:25,434 INFO L471 AbstractCegarLoop]: Abstraction has 984 states and 1388 transitions. [2024-11-19 05:20:25,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 05:20:25,434 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1388 transitions. [2024-11-19 05:20:25,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2024-11-19 05:20:25,436 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 05:20:25,436 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:20:25,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 05:20:25,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 05:20:25,641 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 05:20:25,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:20:25,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1955553822, now seen corresponding path program 1 times [2024-11-19 05:20:25,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:20:25,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683059020] [2024-11-19 05:20:25,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:20:25,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:20:25,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:20:25,943 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 05:20:25,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:20:25,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683059020] [2024-11-19 05:20:25,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683059020] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 05:20:25,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147021416] [2024-11-19 05:20:25,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:20:25,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 05:20:25,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 05:20:25,949 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) [2024-11-19 05:20:25,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 05:20:26,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:20:26,366 INFO L255 TraceCheckSpWp]: Trace formula consists of 1198 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 05:20:26,371 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 05:20:26,404 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-19 05:20:26,405 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 05:20:26,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2147021416] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:20:26,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 05:20:26,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-19 05:20:26,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405478970] [2024-11-19 05:20:26,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:20:26,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 05:20:26,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:20:26,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 05:20:26,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 05:20:26,407 INFO L87 Difference]: Start difference. First operand 984 states and 1388 transitions. Second operand has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 05:20:26,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 05:20:26,481 INFO L93 Difference]: Finished difference Result 1315 states and 1880 transitions. [2024-11-19 05:20:26,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 05:20:26,482 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 238 [2024-11-19 05:20:26,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 05:20:26,486 INFO L225 Difference]: With dead ends: 1315 [2024-11-19 05:20:26,486 INFO L226 Difference]: Without dead ends: 956 [2024-11-19 05:20:26,487 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-19 05:20:26,487 INFO L432 NwaCegarLoop]: 706 mSDtfsCounter, 105 mSDsluCounter, 1319 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 2025 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 05:20:26,487 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 2025 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 05:20:26,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2024-11-19 05:20:26,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 956. [2024-11-19 05:20:26,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 933 states have (on average 1.4019292604501608) internal successors, (1308), 944 states have internal predecessors, (1308), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 11 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-19 05:20:26,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1346 transitions. [2024-11-19 05:20:26,507 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1346 transitions. Word has length 238 [2024-11-19 05:20:26,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 05:20:26,507 INFO L471 AbstractCegarLoop]: Abstraction has 956 states and 1346 transitions. [2024-11-19 05:20:26,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 05:20:26,508 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1346 transitions. [2024-11-19 05:20:26,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2024-11-19 05:20:26,510 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 05:20:26,510 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:20:26,526 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 05:20:26,710 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,SelfDestructingSolverStorable7 [2024-11-19 05:20:26,711 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 05:20:26,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:20:26,712 INFO L85 PathProgramCache]: Analyzing trace with hash -203907948, now seen corresponding path program 1 times [2024-11-19 05:20:26,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:20:26,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128553933] [2024-11-19 05:20:26,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:20:26,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:20:26,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:20:26,984 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 05:20:26,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:20:26,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128553933] [2024-11-19 05:20:26,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128553933] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 05:20:26,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978744028] [2024-11-19 05:20:26,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:20:26,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 05:20:26,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 05:20:26,987 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) [2024-11-19 05:20:26,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 05:20:27,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:20:27,412 INFO L255 TraceCheckSpWp]: Trace formula consists of 1170 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 05:20:27,417 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 05:20:27,590 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 05:20:27,590 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 05:20:27,799 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 05:20:27,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978744028] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 05:20:27,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 05:20:27,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-19 05:20:27,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63985631] [2024-11-19 05:20:27,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 05:20:27,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 05:20:27,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:20:27,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 05:20:27,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-19 05:20:27,804 INFO L87 Difference]: Start difference. First operand 956 states and 1346 transitions. Second operand has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-19 05:20:28,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 05:20:28,077 INFO L93 Difference]: Finished difference Result 2551 states and 3612 transitions. [2024-11-19 05:20:28,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 05:20:28,081 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 238 [2024-11-19 05:20:28,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 05:20:28,096 INFO L225 Difference]: With dead ends: 2551 [2024-11-19 05:20:28,096 INFO L226 Difference]: Without dead ends: 2219 [2024-11-19 05:20:28,099 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 473 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-19 05:20:28,100 INFO L432 NwaCegarLoop]: 768 mSDtfsCounter, 3891 mSDsluCounter, 2387 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3922 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 05:20:28,100 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3922 Valid, 3155 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 05:20:28,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2219 states. [2024-11-19 05:20:28,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2219 to 1703. [2024-11-19 05:20:28,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1703 states, 1665 states have (on average 1.3867867867867867) internal successors, (2309), 1676 states have internal predecessors, (2309), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 26 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-19 05:20:28,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1703 states to 1703 states and 2377 transitions. [2024-11-19 05:20:28,187 INFO L78 Accepts]: Start accepts. Automaton has 1703 states and 2377 transitions. Word has length 238 [2024-11-19 05:20:28,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 05:20:28,187 INFO L471 AbstractCegarLoop]: Abstraction has 1703 states and 2377 transitions. [2024-11-19 05:20:28,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-19 05:20:28,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1703 states and 2377 transitions. [2024-11-19 05:20:28,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 677 [2024-11-19 05:20:28,198 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 05:20:28,199 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:20:28,218 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 05:20:28,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 05:20:28,400 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 05:20:28,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:20:28,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1199430247, now seen corresponding path program 1 times [2024-11-19 05:20:28,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:20:28,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970832072] [2024-11-19 05:20:28,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:20:28,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:20:28,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:20:29,656 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 4 proven. 534 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2024-11-19 05:20:29,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:20:29,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970832072] [2024-11-19 05:20:29,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970832072] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 05:20:29,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116800551] [2024-11-19 05:20:29,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:20:29,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 05:20:29,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 05:20:29,660 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) [2024-11-19 05:20:29,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 05:20:30,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:20:30,571 INFO L255 TraceCheckSpWp]: Trace formula consists of 3219 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 05:20:30,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 05:20:31,211 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 0 proven. 868 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 05:20:31,213 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 05:20:31,839 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 0 proven. 868 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 05:20:31,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116800551] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 05:20:31,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 05:20:31,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 16 [2024-11-19 05:20:31,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190596027] [2024-11-19 05:20:31,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 05:20:31,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 05:20:31,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:20:31,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 05:20:31,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2024-11-19 05:20:31,844 INFO L87 Difference]: Start difference. First operand 1703 states and 2377 transitions. Second operand has 16 states, 16 states have (on average 104.25) internal successors, (1668), 16 states have internal predecessors, (1668), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-19 05:20:39,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 05:20:39,823 INFO L93 Difference]: Finished difference Result 16927 states and 23953 transitions. [2024-11-19 05:20:39,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-19 05:20:39,824 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 104.25) internal successors, (1668), 16 states have internal predecessors, (1668), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 676 [2024-11-19 05:20:39,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 05:20:39,871 INFO L225 Difference]: With dead ends: 16927 [2024-11-19 05:20:39,871 INFO L226 Difference]: Without dead ends: 15844 [2024-11-19 05:20:39,877 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1410 GetRequests, 1342 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1513 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1240, Invalid=3590, Unknown=0, NotChecked=0, Total=4830 [2024-11-19 05:20:39,877 INFO L432 NwaCegarLoop]: 1646 mSDtfsCounter, 42465 mSDsluCounter, 14996 mSDsCounter, 0 mSdLazyCounter, 2522 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42465 SdHoareTripleChecker+Valid, 16642 SdHoareTripleChecker+Invalid, 2926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 2522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-11-19 05:20:39,878 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42465 Valid, 16642 Invalid, 2926 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [404 Valid, 2522 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2024-11-19 05:20:39,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15844 states. [2024-11-19 05:20:40,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15844 to 9399. [2024-11-19 05:20:40,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9399 states, 9269 states have (on average 1.3837522925881973) internal successors, (12826), 9285 states have internal predecessors, (12826), 126 states have call successors, (126), 2 states have call predecessors, (126), 2 states have return successors, (126), 114 states have call predecessors, (126), 126 states have call successors, (126) [2024-11-19 05:20:40,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9399 states to 9399 states and 13078 transitions. [2024-11-19 05:20:40,208 INFO L78 Accepts]: Start accepts. Automaton has 9399 states and 13078 transitions. Word has length 676 [2024-11-19 05:20:40,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 05:20:40,209 INFO L471 AbstractCegarLoop]: Abstraction has 9399 states and 13078 transitions. [2024-11-19 05:20:40,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 104.25) internal successors, (1668), 16 states have internal predecessors, (1668), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-19 05:20:40,210 INFO L276 IsEmpty]: Start isEmpty. Operand 9399 states and 13078 transitions. [2024-11-19 05:20:40,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1563 [2024-11-19 05:20:40,259 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 05:20:40,259 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:20:40,284 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 05:20:40,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 05:20:40,460 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 05:20:40,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:20:40,461 INFO L85 PathProgramCache]: Analyzing trace with hash 723240535, now seen corresponding path program 1 times [2024-11-19 05:20:40,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:20:40,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675045198] [2024-11-19 05:20:40,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:20:40,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms