./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-1.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 5eef0a1d7c251abc753eabb723fe850489bfd10ab147ced1a31e6821eaf88c98 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 16:35:36,343 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 16:35:36,422 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 16:35:36,428 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 16:35:36,428 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 16:35:36,454 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 16:35:36,455 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 16:35:36,455 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 16:35:36,456 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 16:35:36,456 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 16:35:36,456 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 16:35:36,457 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 16:35:36,457 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 16:35:36,458 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 16:35:36,458 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 16:35:36,458 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 16:35:36,459 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 16:35:36,459 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 16:35:36,459 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 16:35:36,460 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 16:35:36,460 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 16:35:36,465 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 16:35:36,465 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 16:35:36,465 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 16:35:36,465 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 16:35:36,466 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 16:35:36,466 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 16:35:36,466 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 16:35:36,467 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 16:35:36,467 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 16:35:36,467 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 16:35:36,467 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 16:35:36,468 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 16:35:36,468 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 16:35:36,470 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 16:35:36,470 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 16:35:36,471 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 16:35:36,471 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 16:35:36,471 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 16:35:36,471 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 16:35:36,471 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 16:35:36,472 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 16:35:36,472 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5eef0a1d7c251abc753eabb723fe850489bfd10ab147ced1a31e6821eaf88c98 [2024-10-11 16:35:36,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 16:35:36,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 16:35:36,741 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 16:35:36,742 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 16:35:36,742 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 16:35:36,743 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-1.i [2024-10-11 16:35:38,177 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 16:35:38,449 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 16:35:38,449 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-1.i [2024-10-11 16:35:38,466 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/b21cb7542/e6c52211611e426980ccfe9e1454d230/FLAGfe20e7ec9 [2024-10-11 16:35:38,477 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/b21cb7542/e6c52211611e426980ccfe9e1454d230 [2024-10-11 16:35:38,481 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 16:35:38,483 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 16:35:38,485 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 16:35:38,485 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 16:35:38,490 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 16:35:38,491 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:35:38" (1/1) ... [2024-10-11 16:35:38,491 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bb7db5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:35:38, skipping insertion in model container [2024-10-11 16:35:38,492 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:35:38" (1/1) ... [2024-10-11 16:35:38,542 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 16:35:38,943 WARN L248 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_OAT_test8-1.i[33021,33034] [2024-10-11 16:35:39,064 WARN L248 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_OAT_test8-1.i[45234,45247] [2024-10-11 16:35:39,077 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 16:35:39,089 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 16:35:39,128 WARN L248 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_OAT_test8-1.i[33021,33034] [2024-10-11 16:35:39,182 WARN L248 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_OAT_test8-1.i[45234,45247] [2024-10-11 16:35:39,188 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 16:35:39,224 INFO L204 MainTranslator]: Completed translation [2024-10-11 16:35:39,224 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:35:39 WrapperNode [2024-10-11 16:35:39,224 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 16:35:39,225 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 16:35:39,225 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 16:35:39,225 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 16:35:39,231 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:35:39" (1/1) ... [2024-10-11 16:35:39,257 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:35:39" (1/1) ... [2024-10-11 16:35:39,324 INFO L138 Inliner]: procedures = 177, calls = 289, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1423 [2024-10-11 16:35:39,324 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 16:35:39,325 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 16:35:39,325 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 16:35:39,326 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 16:35:39,337 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:35:39" (1/1) ... [2024-10-11 16:35:39,337 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:35:39" (1/1) ... [2024-10-11 16:35:39,353 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:35:39" (1/1) ... [2024-10-11 16:35:39,439 INFO L175 MemorySlicer]: Split 256 memory accesses to 3 slices as follows [2, 34, 220]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 54 writes are split as follows [0, 4, 50]. [2024-10-11 16:35:39,439 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:35:39" (1/1) ... [2024-10-11 16:35:39,439 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:35:39" (1/1) ... [2024-10-11 16:35:39,483 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:35:39" (1/1) ... [2024-10-11 16:35:39,501 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:35:39" (1/1) ... [2024-10-11 16:35:39,514 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:35:39" (1/1) ... [2024-10-11 16:35:39,523 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:35:39" (1/1) ... [2024-10-11 16:35:39,539 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 16:35:39,540 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 16:35:39,541 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 16:35:39,541 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 16:35:39,541 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:35:39" (1/1) ... [2024-10-11 16:35:39,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 16:35:39,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:35:39,576 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 16:35:39,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 16:35:39,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 16:35:39,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 16:35:39,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-11 16:35:39,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-11 16:35:39,628 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-11 16:35:39,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 16:35:39,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 16:35:39,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-11 16:35:39,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-10-11 16:35:39,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-10-11 16:35:39,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-10-11 16:35:39,630 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-10-11 16:35:39,630 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-10-11 16:35:39,630 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-10-11 16:35:39,630 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2024-10-11 16:35:39,630 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2024-10-11 16:35:39,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 16:35:39,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 16:35:39,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-11 16:35:39,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-11 16:35:39,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-11 16:35:39,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-11 16:35:39,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-11 16:35:39,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-11 16:35:39,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-11 16:35:39,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 16:35:39,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 16:35:39,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 16:35:39,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-11 16:35:39,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 16:35:39,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 16:35:39,855 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 16:35:39,856 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 16:35:41,181 INFO L? ?]: Removed 328 outVars from TransFormulas that were not future-live. [2024-10-11 16:35:41,181 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 16:35:41,239 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 16:35:41,240 INFO L314 CfgBuilder]: Removed 62 assume(true) statements. [2024-10-11 16:35:41,240 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:35:41 BoogieIcfgContainer [2024-10-11 16:35:41,240 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 16:35:41,242 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 16:35:41,242 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 16:35:41,246 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 16:35:41,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 04:35:38" (1/3) ... [2024-10-11 16:35:41,246 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71f1a3b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:35:41, skipping insertion in model container [2024-10-11 16:35:41,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:35:39" (2/3) ... [2024-10-11 16:35:41,247 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71f1a3b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:35:41, skipping insertion in model container [2024-10-11 16:35:41,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:35:41" (3/3) ... [2024-10-11 16:35:41,248 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test8-1.i [2024-10-11 16:35:41,264 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 16:35:41,264 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-11 16:35:41,346 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 16:35:41,353 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;@793abffc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 16:35:41,354 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-11 16:35:41,361 INFO L276 IsEmpty]: Start isEmpty. Operand has 430 states, 404 states have (on average 1.636138613861386) internal successors, (661), 421 states have internal predecessors, (661), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2024-10-11 16:35:41,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-11 16:35:41,368 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:35:41,368 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:35:41,369 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:35:41,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:35:41,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1181736163, now seen corresponding path program 1 times [2024-10-11 16:35:41,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:35:41,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080979258] [2024-10-11 16:35:41,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:35:41,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:35:41,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:35:41,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:35:41,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:35:41,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080979258] [2024-10-11 16:35:41,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080979258] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:35:41,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:35:41,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 16:35:41,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739568152] [2024-10-11 16:35:41,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:35:41,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 16:35:41,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:35:41,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 16:35:41,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 16:35:41,602 INFO L87 Difference]: Start difference. First operand has 430 states, 404 states have (on average 1.636138613861386) internal successors, (661), 421 states have internal predecessors, (661), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) 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) [2024-10-11 16:35:41,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:35:41,688 INFO L93 Difference]: Finished difference Result 859 states and 1418 transitions. [2024-10-11 16:35:41,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 16:35:41,690 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 [2024-10-11 16:35:41,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:35:41,707 INFO L225 Difference]: With dead ends: 859 [2024-10-11 16:35:41,708 INFO L226 Difference]: Without dead ends: 428 [2024-10-11 16:35:41,713 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 [2024-10-11 16:35:41,716 INFO L432 NwaCegarLoop]: 628 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 16:35:41,718 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 628 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 16:35:41,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2024-10-11 16:35:41,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 428. [2024-10-11 16:35:41,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 403 states have (on average 1.466501240694789) internal successors, (591), 419 states have internal predecessors, (591), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2024-10-11 16:35:41,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 631 transitions. [2024-10-11 16:35:41,780 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 631 transitions. Word has length 8 [2024-10-11 16:35:41,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:35:41,780 INFO L471 AbstractCegarLoop]: Abstraction has 428 states and 631 transitions. [2024-10-11 16:35:41,781 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) [2024-10-11 16:35:41,781 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 631 transitions. [2024-10-11 16:35:41,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-11 16:35:41,786 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:35:41,786 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] [2024-10-11 16:35:41,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 16:35:41,787 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:35:41,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:35:41,787 INFO L85 PathProgramCache]: Analyzing trace with hash 182152541, now seen corresponding path program 1 times [2024-10-11 16:35:41,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:35:41,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774681777] [2024-10-11 16:35:41,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:35:41,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:35:41,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:35:42,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:35:42,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:35:42,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774681777] [2024-10-11 16:35:42,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774681777] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:35:42,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:35:42,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 16:35:42,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839957991] [2024-10-11 16:35:42,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:35:42,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 16:35:42,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:35:42,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 16:35:42,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 16:35:42,229 INFO L87 Difference]: Start difference. First operand 428 states and 631 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 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) [2024-10-11 16:35:42,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:35:42,410 INFO L93 Difference]: Finished difference Result 1039 states and 1531 transitions. [2024-10-11 16:35:42,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 16:35:42,411 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2024-10-11 16:35:42,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:35:42,417 INFO L225 Difference]: With dead ends: 1039 [2024-10-11 16:35:42,417 INFO L226 Difference]: Without dead ends: 812 [2024-10-11 16:35:42,418 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 16:35:42,420 INFO L432 NwaCegarLoop]: 609 mSDtfsCounter, 546 mSDsluCounter, 1212 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 1821 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 16:35:42,421 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 1821 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 16:35:42,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2024-10-11 16:35:42,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 430. [2024-10-11 16:35:42,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 405 states have (on average 1.4641975308641975) internal successors, (593), 421 states have internal predecessors, (593), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2024-10-11 16:35:42,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 633 transitions. [2024-10-11 16:35:42,461 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 633 transitions. Word has length 63 [2024-10-11 16:35:42,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:35:42,462 INFO L471 AbstractCegarLoop]: Abstraction has 430 states and 633 transitions. [2024-10-11 16:35:42,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 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) [2024-10-11 16:35:42,462 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 633 transitions. [2024-10-11 16:35:42,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-10-11 16:35:42,465 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:35:42,465 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] [2024-10-11 16:35:42,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 16:35:42,465 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:35:42,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:35:42,466 INFO L85 PathProgramCache]: Analyzing trace with hash 205336912, now seen corresponding path program 1 times [2024-10-11 16:35:42,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:35:42,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587199231] [2024-10-11 16:35:42,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:35:42,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:35:42,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:35:42,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:35:42,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:35:42,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587199231] [2024-10-11 16:35:42,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587199231] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:35:42,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:35:42,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 16:35:42,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157813727] [2024-10-11 16:35:42,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:35:42,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 16:35:42,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:35:42,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 16:35:42,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 16:35:42,859 INFO L87 Difference]: Start difference. First operand 430 states and 633 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:35:42,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:35:42,983 INFO L93 Difference]: Finished difference Result 815 states and 1197 transitions. [2024-10-11 16:35:42,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 16:35:42,985 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2024-10-11 16:35:42,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:35:42,988 INFO L225 Difference]: With dead ends: 815 [2024-10-11 16:35:42,989 INFO L226 Difference]: Without dead ends: 388 [2024-10-11 16:35:42,991 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 [2024-10-11 16:35:42,992 INFO L432 NwaCegarLoop]: 525 mSDtfsCounter, 30 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1558 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 16:35:42,994 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1558 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 16:35:42,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2024-10-11 16:35:43,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 388. [2024-10-11 16:35:43,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 363 states have (on average 1.421487603305785) internal successors, (516), 379 states have internal predecessors, (516), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2024-10-11 16:35:43,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 556 transitions. [2024-10-11 16:35:43,017 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 556 transitions. Word has length 84 [2024-10-11 16:35:43,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:35:43,019 INFO L471 AbstractCegarLoop]: Abstraction has 388 states and 556 transitions. [2024-10-11 16:35:43,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:35:43,019 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 556 transitions. [2024-10-11 16:35:43,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-10-11 16:35:43,024 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:35:43,024 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] [2024-10-11 16:35:43,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 16:35:43,025 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:35:43,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:35:43,025 INFO L85 PathProgramCache]: Analyzing trace with hash 361770564, now seen corresponding path program 1 times [2024-10-11 16:35:43,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:35:43,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064868744] [2024-10-11 16:35:43,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:35:43,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:35:43,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:35:43,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:35:43,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:35:43,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064868744] [2024-10-11 16:35:43,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064868744] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:35:43,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:35:43,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 16:35:43,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622503319] [2024-10-11 16:35:43,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:35:43,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 16:35:43,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:35:43,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 16:35:43,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 16:35:43,230 INFO L87 Difference]: Start difference. First operand 388 states and 556 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:35:43,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:35:43,360 INFO L93 Difference]: Finished difference Result 1025 states and 1471 transitions. [2024-10-11 16:35:43,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 16:35:43,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2024-10-11 16:35:43,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:35:43,366 INFO L225 Difference]: With dead ends: 1025 [2024-10-11 16:35:43,366 INFO L226 Difference]: Without dead ends: 640 [2024-10-11 16:35:43,369 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 16:35:43,370 INFO L432 NwaCegarLoop]: 729 mSDtfsCounter, 295 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 16:35:43,371 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 1251 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 16:35:43,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2024-10-11 16:35:43,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 637. [2024-10-11 16:35:43,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 611 states have (on average 1.4271685761047463) internal successors, (872), 627 states have internal predecessors, (872), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-11 16:35:43,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 914 transitions. [2024-10-11 16:35:43,407 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 914 transitions. Word has length 84 [2024-10-11 16:35:43,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:35:43,409 INFO L471 AbstractCegarLoop]: Abstraction has 637 states and 914 transitions. [2024-10-11 16:35:43,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:35:43,410 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 914 transitions. [2024-10-11 16:35:43,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-10-11 16:35:43,414 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:35:43,414 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:35:43,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 16:35:43,415 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:35:43,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:35:43,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1829937834, now seen corresponding path program 1 times [2024-10-11 16:35:43,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:35:43,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563810843] [2024-10-11 16:35:43,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:35:43,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:35:43,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:35:43,971 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-11 16:35:43,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:35:44,014 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-11 16:35:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:35:44,021 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 16:35:44,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:35:44,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563810843] [2024-10-11 16:35:44,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563810843] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:35:44,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247552256] [2024-10-11 16:35:44,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:35:44,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:35:44,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:35:44,025 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:35:44,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 16:35:44,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:35:44,520 INFO L255 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-11 16:35:44,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:35:44,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-11 16:35:44,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2024-10-11 16:35:45,390 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 16:35:45,393 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 16:35:45,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247552256] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:35:45,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 16:35:45,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 14 [2024-10-11 16:35:45,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518890754] [2024-10-11 16:35:45,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:35:45,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 16:35:45,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:35:45,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 16:35:45,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-10-11 16:35:45,396 INFO L87 Difference]: Start difference. First operand 637 states and 914 transitions. Second operand has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 10 states have internal predecessors, (89), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 16:35:46,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:35:46,483 INFO L93 Difference]: Finished difference Result 1529 states and 2195 transitions. [2024-10-11 16:35:46,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 16:35:46,486 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 10 states have internal predecessors, (89), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 97 [2024-10-11 16:35:46,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:35:46,490 INFO L225 Difference]: With dead ends: 1529 [2024-10-11 16:35:46,491 INFO L226 Difference]: Without dead ends: 935 [2024-10-11 16:35:46,492 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2024-10-11 16:35:46,494 INFO L432 NwaCegarLoop]: 527 mSDtfsCounter, 592 mSDsluCounter, 2347 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 2874 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-11 16:35:46,494 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 2874 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-11 16:35:46,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2024-10-11 16:35:46,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 637. [2024-10-11 16:35:46,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 611 states have (on average 1.425531914893617) internal successors, (871), 627 states have internal predecessors, (871), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-11 16:35:46,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 913 transitions. [2024-10-11 16:35:46,522 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 913 transitions. Word has length 97 [2024-10-11 16:35:46,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:35:46,523 INFO L471 AbstractCegarLoop]: Abstraction has 637 states and 913 transitions. [2024-10-11 16:35:46,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 10 states have internal predecessors, (89), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 16:35:46,524 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 913 transitions. [2024-10-11 16:35:46,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-10-11 16:35:46,525 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:35:46,525 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:35:46,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-11 16:35:46,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:35:46,727 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:35:46,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:35:46,727 INFO L85 PathProgramCache]: Analyzing trace with hash -226937138, now seen corresponding path program 1 times [2024-10-11 16:35:46,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:35:46,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292952192] [2024-10-11 16:35:46,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:35:46,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:35:47,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:35:47,225 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-11 16:35:47,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:35:47,268 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-11 16:35:47,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:35:47,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 16:35:47,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:35:47,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292952192] [2024-10-11 16:35:47,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292952192] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:35:47,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24920145] [2024-10-11 16:35:47,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:35:47,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:35:47,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:35:47,275 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:35:47,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 16:35:47,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:35:47,616 INFO L255 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-10-11 16:35:47,621 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:35:47,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-11 16:35:47,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2024-10-11 16:35:48,434 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 16:35:48,435 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 16:35:48,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24920145] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:35:48,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 16:35:48,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 15 [2024-10-11 16:35:48,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700889596] [2024-10-11 16:35:48,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:35:48,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 16:35:48,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:35:48,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 16:35:48,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-10-11 16:35:48,438 INFO L87 Difference]: Start difference. First operand 637 states and 913 transitions. Second operand has 12 states, 12 states have (on average 7.5) internal successors, (90), 11 states have internal predecessors, (90), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 16:35:49,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:35:49,992 INFO L93 Difference]: Finished difference Result 1544 states and 2215 transitions. [2024-10-11 16:35:49,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 16:35:49,994 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.5) internal successors, (90), 11 states have internal predecessors, (90), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 98 [2024-10-11 16:35:49,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:35:49,999 INFO L225 Difference]: With dead ends: 1544 [2024-10-11 16:35:49,999 INFO L226 Difference]: Without dead ends: 955 [2024-10-11 16:35:50,001 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=130, Invalid=422, Unknown=0, NotChecked=0, Total=552 [2024-10-11 16:35:50,004 INFO L432 NwaCegarLoop]: 522 mSDtfsCounter, 655 mSDsluCounter, 2802 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 3324 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-11 16:35:50,004 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [659 Valid, 3324 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-11 16:35:50,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2024-10-11 16:35:50,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 653. [2024-10-11 16:35:50,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 627 states have (on average 1.4210526315789473) internal successors, (891), 643 states have internal predecessors, (891), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-11 16:35:50,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 933 transitions. [2024-10-11 16:35:50,037 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 933 transitions. Word has length 98 [2024-10-11 16:35:50,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:35:50,037 INFO L471 AbstractCegarLoop]: Abstraction has 653 states and 933 transitions. [2024-10-11 16:35:50,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.5) internal successors, (90), 11 states have internal predecessors, (90), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 16:35:50,038 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 933 transitions. [2024-10-11 16:35:50,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-11 16:35:50,039 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:35:50,039 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:35:50,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 16:35:50,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:35:50,244 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:35:50,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:35:50,244 INFO L85 PathProgramCache]: Analyzing trace with hash 2142865002, now seen corresponding path program 1 times [2024-10-11 16:35:50,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:35:50,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870804842] [2024-10-11 16:35:50,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:35:50,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:35:50,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:35:50,610 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-11 16:35:50,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:35:50,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-11 16:35:50,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:35:50,617 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 16:35:50,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:35:50,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870804842] [2024-10-11 16:35:50,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870804842] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:35:50,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:35:50,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 16:35:50,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456935859] [2024-10-11 16:35:50,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:35:50,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 16:35:50,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:35:50,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 16:35:50,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-11 16:35:50,619 INFO L87 Difference]: Start difference. First operand 653 states and 933 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 16:35:51,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:35:51,411 INFO L93 Difference]: Finished difference Result 1261 states and 1817 transitions. [2024-10-11 16:35:51,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 16:35:51,412 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 99 [2024-10-11 16:35:51,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:35:51,416 INFO L225 Difference]: With dead ends: 1261 [2024-10-11 16:35:51,416 INFO L226 Difference]: Without dead ends: 665 [2024-10-11 16:35:51,417 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-11 16:35:51,417 INFO L432 NwaCegarLoop]: 456 mSDtfsCounter, 68 mSDsluCounter, 2334 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 2790 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-11 16:35:51,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 2790 Invalid, 937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-11 16:35:51,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2024-10-11 16:35:51,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 661. [2024-10-11 16:35:51,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 635 states have (on average 1.4188976377952756) internal successors, (901), 651 states have internal predecessors, (901), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-11 16:35:51,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 943 transitions. [2024-10-11 16:35:51,438 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 943 transitions. Word has length 99 [2024-10-11 16:35:51,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:35:51,438 INFO L471 AbstractCegarLoop]: Abstraction has 661 states and 943 transitions. [2024-10-11 16:35:51,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 16:35:51,438 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 943 transitions. [2024-10-11 16:35:51,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-11 16:35:51,439 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:35:51,440 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:35:51,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 16:35:51,440 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:35:51,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:35:51,441 INFO L85 PathProgramCache]: Analyzing trace with hash -62021711, now seen corresponding path program 1 times [2024-10-11 16:35:51,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:35:51,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150604657] [2024-10-11 16:35:51,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:35:51,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:35:51,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:35:51,766 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-11 16:35:51,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:35:51,769 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-11 16:35:51,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:35:51,772 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 16:35:51,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:35:51,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150604657] [2024-10-11 16:35:51,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150604657] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:35:51,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:35:51,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 16:35:51,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630915070] [2024-10-11 16:35:51,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:35:51,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 16:35:51,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:35:51,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 16:35:51,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 16:35:51,774 INFO L87 Difference]: Start difference. First operand 661 states and 943 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 16:35:52,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:35:52,520 INFO L93 Difference]: Finished difference Result 1276 states and 1837 transitions. [2024-10-11 16:35:52,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 16:35:52,521 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 99 [2024-10-11 16:35:52,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:35:52,525 INFO L225 Difference]: With dead ends: 1276 [2024-10-11 16:35:52,525 INFO L226 Difference]: Without dead ends: 669 [2024-10-11 16:35:52,527 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 16:35:52,527 INFO L432 NwaCegarLoop]: 468 mSDtfsCounter, 63 mSDsluCounter, 1955 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 2423 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-11 16:35:52,528 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 2423 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-11 16:35:52,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2024-10-11 16:35:52,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 667. [2024-10-11 16:35:52,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 641 states have (on average 1.4149765990639624) internal successors, (907), 657 states have internal predecessors, (907), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-11 16:35:52,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 949 transitions. [2024-10-11 16:35:52,556 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 949 transitions. Word has length 99 [2024-10-11 16:35:52,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:35:52,556 INFO L471 AbstractCegarLoop]: Abstraction has 667 states and 949 transitions. [2024-10-11 16:35:52,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 16:35:52,557 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 949 transitions. [2024-10-11 16:35:52,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-10-11 16:35:52,558 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:35:52,558 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:35:52,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 16:35:52,559 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:35:52,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:35:52,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1077123426, now seen corresponding path program 1 times [2024-10-11 16:35:52,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:35:52,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493313418] [2024-10-11 16:35:52,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:35:52,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:35:52,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:35:52,900 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-11 16:35:52,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:35:52,934 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-11 16:35:52,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:35:52,942 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 16:35:52,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:35:52,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493313418] [2024-10-11 16:35:52,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493313418] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:35:52,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269566013] [2024-10-11 16:35:52,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:35:52,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:35:52,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:35:52,945 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:35:52,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 16:35:53,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:35:53,297 INFO L255 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 16:35:53,303 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:35:53,447 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 16:35:53,448 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 16:35:53,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269566013] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:35:53,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 16:35:53,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2024-10-11 16:35:53,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983083844] [2024-10-11 16:35:53,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:35:53,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 16:35:53,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:35:53,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 16:35:53,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-11 16:35:53,451 INFO L87 Difference]: Start difference. First operand 667 states and 949 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 16:35:53,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:35:53,798 INFO L93 Difference]: Finished difference Result 1290 states and 1849 transitions. [2024-10-11 16:35:53,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 16:35:53,799 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 100 [2024-10-11 16:35:53,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:35:53,804 INFO L225 Difference]: With dead ends: 1290 [2024-10-11 16:35:53,804 INFO L226 Difference]: Without dead ends: 673 [2024-10-11 16:35:53,806 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-10-11 16:35:53,806 INFO L432 NwaCegarLoop]: 525 mSDtfsCounter, 43 mSDsluCounter, 2326 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 2851 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 16:35:53,808 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 2851 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 16:35:53,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2024-10-11 16:35:53,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 655. [2024-10-11 16:35:53,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 629 states have (on average 1.4133545310015898) internal successors, (889), 645 states have internal predecessors, (889), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-11 16:35:53,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 931 transitions. [2024-10-11 16:35:53,830 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 931 transitions. Word has length 100 [2024-10-11 16:35:53,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:35:53,831 INFO L471 AbstractCegarLoop]: Abstraction has 655 states and 931 transitions. [2024-10-11 16:35:53,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 16:35:53,831 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 931 transitions. [2024-10-11 16:35:53,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-10-11 16:35:53,832 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:35:53,832 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:35:53,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-11 16:35:54,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:35:54,037 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:35:54,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:35:54,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1473683765, now seen corresponding path program 1 times [2024-10-11 16:35:54,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:35:54,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217772197] [2024-10-11 16:35:54,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:35:54,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:35:54,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:35:54,303 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-11 16:35:54,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:35:54,335 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-11 16:35:54,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:35:54,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 16:35:54,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:35:54,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217772197] [2024-10-11 16:35:54,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217772197] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:35:54,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494412526] [2024-10-11 16:35:54,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:35:54,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:35:54,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:35:54,341 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:35:54,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 16:35:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:35:55,074 INFO L255 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 16:35:55,078 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:35:55,100 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 16:35:55,100 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 16:35:55,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494412526] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:35:55,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 16:35:55,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2024-10-11 16:35:55,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076324349] [2024-10-11 16:35:55,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:35:55,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 16:35:55,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:35:55,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 16:35:55,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 16:35:55,104 INFO L87 Difference]: Start difference. First operand 655 states and 931 transitions. Second operand has 4 states, 3 states have (on average 31.333333333333332) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 16:35:55,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:35:55,169 INFO L93 Difference]: Finished difference Result 1213 states and 1738 transitions. [2024-10-11 16:35:55,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 16:35:55,172 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 31.333333333333332) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 100 [2024-10-11 16:35:55,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:35:55,176 INFO L225 Difference]: With dead ends: 1213 [2024-10-11 16:35:55,176 INFO L226 Difference]: Without dead ends: 657 [2024-10-11 16:35:55,177 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 16:35:55,178 INFO L432 NwaCegarLoop]: 541 mSDtfsCounter, 0 mSDsluCounter, 1078 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1619 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 16:35:55,179 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1619 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 16:35:55,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2024-10-11 16:35:55,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 657. [2024-10-11 16:35:55,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 630 states have (on average 1.4142857142857144) internal successors, (891), 647 states have internal predecessors, (891), 21 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-10-11 16:35:55,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 934 transitions. [2024-10-11 16:35:55,204 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 934 transitions. Word has length 100 [2024-10-11 16:35:55,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:35:55,205 INFO L471 AbstractCegarLoop]: Abstraction has 657 states and 934 transitions. [2024-10-11 16:35:55,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 31.333333333333332) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 16:35:55,205 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 934 transitions. [2024-10-11 16:35:55,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-10-11 16:35:55,206 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:35:55,206 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] [2024-10-11 16:35:55,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-11 16:35:55,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-11 16:35:55,407 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:35:55,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:35:55,408 INFO L85 PathProgramCache]: Analyzing trace with hash -499051429, now seen corresponding path program 1 times [2024-10-11 16:35:55,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:35:55,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153180558] [2024-10-11 16:35:55,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:35:55,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:35:55,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:35:55,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-11 16:35:55,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:35:55,891 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-11 16:35:55,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:35:55,927 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 16:35:55,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:35:55,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153180558] [2024-10-11 16:35:55,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153180558] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:35:55,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132640498] [2024-10-11 16:35:55,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:35:55,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:35:55,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:35:55,931 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:35:55,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 16:35:56,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:35:56,316 INFO L255 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 16:35:56,319 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:36:05,418 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 16:36:05,419 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 16:36:05,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132640498] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:36:05,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 16:36:05,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-10-11 16:36:05,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422659991] [2024-10-11 16:36:05,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:36:05,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 16:36:05,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:36:05,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 16:36:05,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-10-11 16:36:05,421 INFO L87 Difference]: Start difference. First operand 657 states and 934 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 16:36:10,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-10-11 16:36:14,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-10-11 16:36:18,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-10-11 16:36:20,504 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-10-11 16:36:25,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-10-11 16:36:26,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:36:26,310 INFO L93 Difference]: Finished difference Result 1262 states and 1810 transitions. [2024-10-11 16:36:26,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 16:36:26,311 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 102 [2024-10-11 16:36:26,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:36:26,314 INFO L225 Difference]: With dead ends: 1262 [2024-10-11 16:36:26,314 INFO L226 Difference]: Without dead ends: 667 [2024-10-11 16:36:26,316 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-10-11 16:36:26,316 INFO L432 NwaCegarLoop]: 529 mSDtfsCounter, 12 mSDsluCounter, 2301 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 3 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2830 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.9s IncrementalHoareTripleChecker+Time [2024-10-11 16:36:26,316 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2830 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 442 Invalid, 4 Unknown, 0 Unchecked, 20.9s Time] [2024-10-11 16:36:26,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2024-10-11 16:36:26,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 657. [2024-10-11 16:36:26,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 630 states have (on average 1.4142857142857144) internal successors, (891), 647 states have internal predecessors, (891), 21 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-10-11 16:36:26,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 934 transitions. [2024-10-11 16:36:26,335 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 934 transitions. Word has length 102 [2024-10-11 16:36:26,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:36:26,335 INFO L471 AbstractCegarLoop]: Abstraction has 657 states and 934 transitions. [2024-10-11 16:36:26,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 16:36:26,335 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 934 transitions. [2024-10-11 16:36:26,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-11 16:36:26,336 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:36:26,336 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] [2024-10-11 16:36:26,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-11 16:36:26,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-11 16:36:26,538 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:36:26,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:36:26,538 INFO L85 PathProgramCache]: Analyzing trace with hash -96105653, now seen corresponding path program 1 times [2024-10-11 16:36:26,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:36:26,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142468547] [2024-10-11 16:36:26,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:36:26,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:36:26,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:36:27,056 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-11 16:36:27,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:36:27,062 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-11 16:36:27,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:36:27,067 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 16:36:27,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:36:27,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142468547] [2024-10-11 16:36:27,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142468547] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:36:27,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:36:27,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-11 16:36:27,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061552864] [2024-10-11 16:36:27,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:36:27,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 16:36:27,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:36:27,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 16:36:27,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-10-11 16:36:27,069 INFO L87 Difference]: Start difference. First operand 657 states and 934 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 16:36:28,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:36:28,308 INFO L93 Difference]: Finished difference Result 1284 states and 1839 transitions. [2024-10-11 16:36:28,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 16:36:28,309 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 104 [2024-10-11 16:36:28,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:36:28,313 INFO L225 Difference]: With dead ends: 1284 [2024-10-11 16:36:28,313 INFO L226 Difference]: Without dead ends: 689 [2024-10-11 16:36:28,314 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-10-11 16:36:28,315 INFO L432 NwaCegarLoop]: 463 mSDtfsCounter, 77 mSDsluCounter, 3579 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 4042 SdHoareTripleChecker+Invalid, 1467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-11 16:36:28,316 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 4042 Invalid, 1467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1461 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-11 16:36:28,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2024-10-11 16:36:28,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 677. [2024-10-11 16:36:28,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 650 states have (on average 1.4076923076923078) internal successors, (915), 667 states have internal predecessors, (915), 21 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-10-11 16:36:28,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 958 transitions. [2024-10-11 16:36:28,337 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 958 transitions. Word has length 104 [2024-10-11 16:36:28,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:36:28,337 INFO L471 AbstractCegarLoop]: Abstraction has 677 states and 958 transitions. [2024-10-11 16:36:28,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 16:36:28,337 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 958 transitions. [2024-10-11 16:36:28,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-11 16:36:28,338 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:36:28,338 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] [2024-10-11 16:36:28,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 16:36:28,339 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:36:28,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:36:28,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1180147247, now seen corresponding path program 1 times [2024-10-11 16:36:28,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:36:28,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985729026] [2024-10-11 16:36:28,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:36:28,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:36:28,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:36:28,693 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-11 16:36:28,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:36:28,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-11 16:36:28,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:36:28,786 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 16:36:28,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:36:28,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985729026] [2024-10-11 16:36:28,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985729026] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:36:28,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048334381] [2024-10-11 16:36:28,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:36:28,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:36:28,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:36:28,789 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:36:28,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 16:36:29,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:36:29,580 INFO L255 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-11 16:36:29,582 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:36:29,987 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 16:36:29,988 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 16:36:29,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048334381] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:36:29,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 16:36:29,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2024-10-11 16:36:29,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400294970] [2024-10-11 16:36:29,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:36:29,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 16:36:29,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:36:29,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 16:36:29,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2024-10-11 16:36:29,991 INFO L87 Difference]: Start difference. First operand 677 states and 958 transitions. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 16:36:31,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:36:31,545 INFO L93 Difference]: Finished difference Result 1312 states and 1873 transitions. [2024-10-11 16:36:31,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 16:36:31,546 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 104 [2024-10-11 16:36:31,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:36:31,566 INFO L225 Difference]: With dead ends: 1312 [2024-10-11 16:36:31,566 INFO L226 Difference]: Without dead ends: 707 [2024-10-11 16:36:31,567 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2024-10-11 16:36:31,568 INFO L432 NwaCegarLoop]: 530 mSDtfsCounter, 17 mSDsluCounter, 3748 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4278 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-11 16:36:31,569 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4278 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-11 16:36:31,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2024-10-11 16:36:31,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 701. [2024-10-11 16:36:31,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 674 states have (on average 1.4020771513353116) internal successors, (945), 691 states have internal predecessors, (945), 21 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-10-11 16:36:31,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 988 transitions. [2024-10-11 16:36:31,589 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 988 transitions. Word has length 104 [2024-10-11 16:36:31,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:36:31,590 INFO L471 AbstractCegarLoop]: Abstraction has 701 states and 988 transitions. [2024-10-11 16:36:31,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 16:36:31,590 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 988 transitions. [2024-10-11 16:36:31,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-11 16:36:31,591 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:36:31,591 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] [2024-10-11 16:36:31,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-11 16:36:31,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-11 16:36:31,792 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:36:31,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:36:31,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1368588298, now seen corresponding path program 1 times [2024-10-11 16:36:31,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:36:31,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187265951] [2024-10-11 16:36:31,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:36:31,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:36:31,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:36:32,134 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-11 16:36:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:36:32,218 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-11 16:36:32,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:36:32,223 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 16:36:32,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:36:32,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187265951] [2024-10-11 16:36:32,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187265951] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:36:32,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398356453] [2024-10-11 16:36:32,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:36:32,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:36:32,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:36:32,225 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:36:32,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 16:36:32,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:36:32,805 INFO L255 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-11 16:36:32,808 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:36:33,063 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 16:36:33,064 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 16:36:33,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398356453] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:36:33,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 16:36:33,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-10-11 16:36:33,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214679204] [2024-10-11 16:36:33,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:36:33,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 16:36:33,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:36:33,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 16:36:33,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-10-11 16:36:33,066 INFO L87 Difference]: Start difference. First operand 701 states and 988 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 16:36:33,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:36:33,542 INFO L93 Difference]: Finished difference Result 1328 states and 1891 transitions. [2024-10-11 16:36:33,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 16:36:33,543 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 104 [2024-10-11 16:36:33,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:36:33,546 INFO L225 Difference]: With dead ends: 1328 [2024-10-11 16:36:33,546 INFO L226 Difference]: Without dead ends: 711 [2024-10-11 16:36:33,547 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-10-11 16:36:33,547 INFO L432 NwaCegarLoop]: 529 mSDtfsCounter, 10 mSDsluCounter, 2301 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2830 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-11 16:36:33,548 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2830 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-11 16:36:33,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2024-10-11 16:36:33,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 701. [2024-10-11 16:36:33,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 674 states have (on average 1.4020771513353116) internal successors, (945), 691 states have internal predecessors, (945), 21 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-10-11 16:36:33,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 988 transitions. [2024-10-11 16:36:33,566 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 988 transitions. Word has length 104 [2024-10-11 16:36:33,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:36:33,566 INFO L471 AbstractCegarLoop]: Abstraction has 701 states and 988 transitions. [2024-10-11 16:36:33,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 16:36:33,567 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 988 transitions. [2024-10-11 16:36:33,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-10-11 16:36:33,568 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:36:33,568 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] [2024-10-11 16:36:33,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-11 16:36:33,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:36:33,769 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:36:33,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:36:33,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1943909614, now seen corresponding path program 1 times [2024-10-11 16:36:33,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:36:33,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63652209] [2024-10-11 16:36:33,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:36:33,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:36:33,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:36:34,028 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-11 16:36:34,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:36:34,112 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-11 16:36:34,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:36:34,117 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 16:36:34,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:36:34,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63652209] [2024-10-11 16:36:34,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63652209] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:36:34,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308470526] [2024-10-11 16:36:34,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:36:34,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:36:34,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:36:34,120 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:36:34,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 16:36:34,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:36:34,869 INFO L255 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 16:36:34,871 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:36:34,946 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 16:36:34,946 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 16:36:35,052 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 16:36:35,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308470526] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 16:36:35,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 16:36:35,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-10-11 16:36:35,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136216038] [2024-10-11 16:36:35,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 16:36:35,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 16:36:35,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:36:35,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 16:36:35,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-11 16:36:35,055 INFO L87 Difference]: Start difference. First operand 701 states and 988 transitions. Second operand has 11 states, 8 states have (on average 13.625) internal successors, (109), 10 states have internal predecessors, (109), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 16:36:35,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:36:35,748 INFO L93 Difference]: Finished difference Result 1290 states and 1838 transitions. [2024-10-11 16:36:35,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 16:36:35,750 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 13.625) internal successors, (109), 10 states have internal predecessors, (109), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 105 [2024-10-11 16:36:35,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:36:35,754 INFO L225 Difference]: With dead ends: 1290 [2024-10-11 16:36:35,754 INFO L226 Difference]: Without dead ends: 709 [2024-10-11 16:36:35,755 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2024-10-11 16:36:35,756 INFO L432 NwaCegarLoop]: 474 mSDtfsCounter, 60 mSDsluCounter, 3213 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 3687 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-11 16:36:35,756 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 3687 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-11 16:36:35,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2024-10-11 16:36:35,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 709. [2024-10-11 16:36:35,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 681 states have (on average 1.4038179148311307) internal successors, (956), 698 states have internal predecessors, (956), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (23), 7 states have call predecessors, (23), 21 states have call successors, (23) [2024-10-11 16:36:35,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 1000 transitions. [2024-10-11 16:36:35,777 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 1000 transitions. Word has length 105 [2024-10-11 16:36:35,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:36:35,778 INFO L471 AbstractCegarLoop]: Abstraction has 709 states and 1000 transitions. [2024-10-11 16:36:35,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 13.625) internal successors, (109), 10 states have internal predecessors, (109), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 16:36:35,778 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 1000 transitions. [2024-10-11 16:36:35,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-10-11 16:36:35,779 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:36:35,779 INFO L215 NwaCegarLoop]: trace histogram [6, 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] [2024-10-11 16:36:35,807 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-11 16:36:35,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-11 16:36:35,980 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:36:35,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:36:35,981 INFO L85 PathProgramCache]: Analyzing trace with hash -556429694, now seen corresponding path program 2 times [2024-10-11 16:36:35,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:36:35,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676810400] [2024-10-11 16:36:35,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:36:35,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:36:36,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:36:36,382 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-11 16:36:36,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:36:36,485 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-11 16:36:36,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:36:36,496 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 16:36:36,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:36:36,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676810400] [2024-10-11 16:36:36,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676810400] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:36:36,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027257168] [2024-10-11 16:36:36,497 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 16:36:36,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:36:36,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:36:36,499 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:36:36,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 16:36:38,466 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 16:36:38,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 16:36:38,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-11 16:36:38,474 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:36:38,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-11 16:36:38,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2024-10-11 16:36:39,307 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 16:36:39,307 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 16:36:39,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027257168] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:36:39,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 16:36:39,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 16 [2024-10-11 16:36:39,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520258433] [2024-10-11 16:36:39,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:36:39,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 16:36:39,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:36:39,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 16:36:39,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-10-11 16:36:39,309 INFO L87 Difference]: Start difference. First operand 709 states and 1000 transitions. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 10 states have internal predecessors, (96), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 16:36:40,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:36:40,712 INFO L93 Difference]: Finished difference Result 1629 states and 2313 transitions. [2024-10-11 16:36:40,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 16:36:40,713 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 10 states have internal predecessors, (96), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 109 [2024-10-11 16:36:40,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:36:40,717 INFO L225 Difference]: With dead ends: 1629 [2024-10-11 16:36:40,717 INFO L226 Difference]: Without dead ends: 994 [2024-10-11 16:36:40,719 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2024-10-11 16:36:40,719 INFO L432 NwaCegarLoop]: 570 mSDtfsCounter, 582 mSDsluCounter, 2869 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 3439 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-11 16:36:40,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [586 Valid, 3439 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-11 16:36:40,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2024-10-11 16:36:40,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 696. [2024-10-11 16:36:40,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 668 states have (on average 1.407185628742515) internal successors, (940), 685 states have internal predecessors, (940), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (23), 7 states have call predecessors, (23), 21 states have call successors, (23) [2024-10-11 16:36:40,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 984 transitions. [2024-10-11 16:36:40,740 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 984 transitions. Word has length 109 [2024-10-11 16:36:40,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:36:40,741 INFO L471 AbstractCegarLoop]: Abstraction has 696 states and 984 transitions. [2024-10-11 16:36:40,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 10 states have internal predecessors, (96), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 16:36:40,741 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 984 transitions. [2024-10-11 16:36:40,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-10-11 16:36:40,742 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:36:40,742 INFO L215 NwaCegarLoop]: trace histogram [6, 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] [2024-10-11 16:36:40,766 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-11 16:36:40,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:36:40,943 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:36:40,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:36:40,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1974490594, now seen corresponding path program 1 times [2024-10-11 16:36:40,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:36:40,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478402645] [2024-10-11 16:36:40,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:36:40,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:36:41,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:36:41,298 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-11 16:36:41,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:36:41,395 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-11 16:36:41,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:36:41,405 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 16:36:41,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:36:41,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478402645] [2024-10-11 16:36:41,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478402645] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:36:41,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950350981] [2024-10-11 16:36:41,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:36:41,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:36:41,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:36:41,408 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:36:41,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-11 16:36:41,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:36:41,912 INFO L255 TraceCheckSpWp]: Trace formula consists of 672 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-11 16:36:41,915 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:36:42,075 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 27 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 16:36:42,077 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 16:36:42,311 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 16:36:42,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950350981] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 16:36:42,312 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 16:36:42,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 8] total 20 [2024-10-11 16:36:42,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645983624] [2024-10-11 16:36:42,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 16:36:42,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-11 16:36:42,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:36:42,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-11 16:36:42,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2024-10-11 16:36:42,315 INFO L87 Difference]: Start difference. First operand 696 states and 984 transitions. Second operand has 20 states, 17 states have (on average 7.0) internal successors, (119), 19 states have internal predecessors, (119), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 16:36:43,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:36:43,454 INFO L93 Difference]: Finished difference Result 1297 states and 1853 transitions. [2024-10-11 16:36:43,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-11 16:36:43,455 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 7.0) internal successors, (119), 19 states have internal predecessors, (119), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 109 [2024-10-11 16:36:43,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:36:43,459 INFO L225 Difference]: With dead ends: 1297 [2024-10-11 16:36:43,459 INFO L226 Difference]: Without dead ends: 707 [2024-10-11 16:36:43,461 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 206 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=268, Invalid=662, Unknown=0, NotChecked=0, Total=930 [2024-10-11 16:36:43,462 INFO L432 NwaCegarLoop]: 462 mSDtfsCounter, 88 mSDsluCounter, 4033 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 4495 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-11 16:36:43,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 4495 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-11 16:36:43,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2024-10-11 16:36:43,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 705. [2024-10-11 16:36:43,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 677 states have (on average 1.4091580502215657) internal successors, (954), 694 states have internal predecessors, (954), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-10-11 16:36:43,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 997 transitions. [2024-10-11 16:36:43,483 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 997 transitions. Word has length 109 [2024-10-11 16:36:43,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:36:43,484 INFO L471 AbstractCegarLoop]: Abstraction has 705 states and 997 transitions. [2024-10-11 16:36:43,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 7.0) internal successors, (119), 19 states have internal predecessors, (119), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 16:36:43,484 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 997 transitions. [2024-10-11 16:36:43,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-10-11 16:36:43,485 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:36:43,485 INFO L215 NwaCegarLoop]: trace histogram [15, 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] [2024-10-11 16:36:43,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-11 16:36:43,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-11 16:36:43,686 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:36:43,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:36:43,687 INFO L85 PathProgramCache]: Analyzing trace with hash 493496388, now seen corresponding path program 2 times [2024-10-11 16:36:43,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:36:43,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340830149] [2024-10-11 16:36:43,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:36:43,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:36:43,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:36:44,104 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-11 16:36:44,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:36:44,286 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-11 16:36:44,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:36:44,305 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-10-11 16:36:44,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:36:44,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340830149] [2024-10-11 16:36:44,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340830149] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:36:44,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78728542] [2024-10-11 16:36:44,306 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 16:36:44,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:36:44,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:36:44,308 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:36:44,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-11 16:36:55,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 16:36:55,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 16:36:55,122 INFO L255 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-10-11 16:36:55,124 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:37:00,297 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-10-11 16:37:00,297 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 16:37:00,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78728542] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:37:00,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 16:37:00,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2024-10-11 16:37:00,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186630821] [2024-10-11 16:37:00,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:37:00,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 16:37:00,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:37:00,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 16:37:00,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2024-10-11 16:37:00,299 INFO L87 Difference]: Start difference. First operand 705 states and 997 transitions. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)