./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_SFH_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_SFH_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 7e63083161b3199c06a87ea66924e1f63d6865962e6a830baf344139b270d928 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 16:42:33,055 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 16:42:33,131 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 16:42:33,136 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 16:42:33,138 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 16:42:33,165 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 16:42:33,166 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 16:42:33,166 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 16:42:33,167 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 16:42:33,167 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 16:42:33,168 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 16:42:33,168 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 16:42:33,169 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 16:42:33,169 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 16:42:33,170 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 16:42:33,170 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 16:42:33,170 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 16:42:33,171 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 16:42:33,171 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 16:42:33,171 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 16:42:33,172 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 16:42:33,175 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 16:42:33,176 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 16:42:33,176 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 16:42:33,176 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 16:42:33,176 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 16:42:33,177 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 16:42:33,177 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 16:42:33,177 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 16:42:33,177 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 16:42:33,177 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 16:42:33,178 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 16:42:33,178 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 16:42:33,178 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 16:42:33,178 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 16:42:33,179 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 16:42:33,179 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 16:42:33,179 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 16:42:33,180 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 16:42:33,181 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 16:42:33,181 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 16:42:33,181 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 16:42:33,181 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e63083161b3199c06a87ea66924e1f63d6865962e6a830baf344139b270d928 [2024-10-11 16:42:33,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 16:42:33,467 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 16:42:33,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 16:42:33,471 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 16:42:33,471 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 16:42:33,472 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i [2024-10-11 16:42:34,946 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 16:42:35,220 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 16:42:35,220 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i [2024-10-11 16:42:35,240 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/f79ea3343/a7a054503d1b4a76b2f962a2fabc08a2/FLAG45518eac7 [2024-10-11 16:42:35,252 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/f79ea3343/a7a054503d1b4a76b2f962a2fabc08a2 [2024-10-11 16:42:35,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 16:42:35,256 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 16:42:35,258 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 16:42:35,258 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 16:42:35,263 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 16:42:35,264 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:42:35" (1/1) ... [2024-10-11 16:42:35,264 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@735e22c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:42:35, skipping insertion in model container [2024-10-11 16:42:35,264 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:42:35" (1/1) ... [2024-10-11 16:42:35,319 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 16:42:35,690 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_SFH_test8-1.i[33021,33034] [2024-10-11 16:42:35,821 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_SFH_test8-1.i[45234,45247] [2024-10-11 16:42:35,828 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 16:42:35,848 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 16:42:35,884 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_SFH_test8-1.i[33021,33034] [2024-10-11 16:42:35,940 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_SFH_test8-1.i[45234,45247] [2024-10-11 16:42:35,946 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 16:42:36,059 INFO L204 MainTranslator]: Completed translation [2024-10-11 16:42:36,060 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:42:36 WrapperNode [2024-10-11 16:42:36,060 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 16:42:36,062 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 16:42:36,062 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 16:42:36,062 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 16:42:36,069 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:42:36" (1/1) ... [2024-10-11 16:42:36,111 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:42:36" (1/1) ... [2024-10-11 16:42:36,195 INFO L138 Inliner]: procedures = 177, calls = 289, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1423 [2024-10-11 16:42:36,196 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 16:42:36,196 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 16:42:36,197 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 16:42:36,197 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 16:42:36,208 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:42:36" (1/1) ... [2024-10-11 16:42:36,209 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:42:36" (1/1) ... [2024-10-11 16:42:36,220 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:42:36" (1/1) ... [2024-10-11 16:42:36,318 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 16:42:36,318 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:42:36" (1/1) ... [2024-10-11 16:42:36,318 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:42:36" (1/1) ... [2024-10-11 16:42:36,367 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:42:36" (1/1) ... [2024-10-11 16:42:36,387 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:42:36" (1/1) ... [2024-10-11 16:42:36,395 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:42:36" (1/1) ... [2024-10-11 16:42:36,401 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:42:36" (1/1) ... [2024-10-11 16:42:36,410 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 16:42:36,412 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 16:42:36,413 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 16:42:36,413 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 16:42:36,414 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:42:36" (1/1) ... [2024-10-11 16:42:36,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 16:42:36,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:42:36,448 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 16:42:36,451 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 16:42:36,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 16:42:36,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 16:42:36,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-11 16:42:36,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-11 16:42:36,499 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-11 16:42:36,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 16:42:36,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 16:42:36,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-11 16:42:36,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-10-11 16:42:36,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-10-11 16:42:36,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-10-11 16:42:36,502 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-10-11 16:42:36,502 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-10-11 16:42:36,502 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-10-11 16:42:36,502 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2024-10-11 16:42:36,502 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2024-10-11 16:42:36,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 16:42:36,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 16:42:36,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-11 16:42:36,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-11 16:42:36,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-11 16:42:36,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-11 16:42:36,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-11 16:42:36,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-11 16:42:36,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-11 16:42:36,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 16:42:36,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 16:42:36,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 16:42:36,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-11 16:42:36,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 16:42:36,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 16:42:36,742 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 16:42:36,745 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 16:42:38,059 INFO L? ?]: Removed 328 outVars from TransFormulas that were not future-live. [2024-10-11 16:42:38,059 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 16:42:38,118 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 16:42:38,118 INFO L314 CfgBuilder]: Removed 62 assume(true) statements. [2024-10-11 16:42:38,118 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:42:38 BoogieIcfgContainer [2024-10-11 16:42:38,119 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 16:42:38,121 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 16:42:38,121 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 16:42:38,124 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 16:42:38,124 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 04:42:35" (1/3) ... [2024-10-11 16:42:38,125 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14d849cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:42:38, skipping insertion in model container [2024-10-11 16:42:38,125 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:42:36" (2/3) ... [2024-10-11 16:42:38,125 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14d849cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:42:38, skipping insertion in model container [2024-10-11 16:42:38,125 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:42:38" (3/3) ... [2024-10-11 16:42:38,126 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test8-1.i [2024-10-11 16:42:38,142 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 16:42:38,143 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-11 16:42:38,285 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 16:42:38,290 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;@69f5d273, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 16:42:38,291 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-11 16:42:38,300 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 16:42:38,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-11 16:42:38,315 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:42:38,315 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:42:38,316 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:42:38,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:42:38,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1181736163, now seen corresponding path program 1 times [2024-10-11 16:42:38,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:42:38,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854324150] [2024-10-11 16:42:38,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:42:38,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:42:38,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:42:38,532 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 16:42:38,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:42:38,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854324150] [2024-10-11 16:42:38,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854324150] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:42:38,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:42:38,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 16:42:38,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101860325] [2024-10-11 16:42:38,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:42:38,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 16:42:38,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:42:38,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 16:42:38,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 16:42:38,563 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 16:42:38,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:42:38,655 INFO L93 Difference]: Finished difference Result 859 states and 1418 transitions. [2024-10-11 16:42:38,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 16:42:38,658 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 16:42:38,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:42:38,674 INFO L225 Difference]: With dead ends: 859 [2024-10-11 16:42:38,676 INFO L226 Difference]: Without dead ends: 428 [2024-10-11 16:42:38,684 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 16:42:38,688 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 16:42:38,691 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 16:42:38,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2024-10-11 16:42:38,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 428. [2024-10-11 16:42:38,760 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 16:42:38,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 631 transitions. [2024-10-11 16:42:38,765 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 631 transitions. Word has length 8 [2024-10-11 16:42:38,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:42:38,765 INFO L471 AbstractCegarLoop]: Abstraction has 428 states and 631 transitions. [2024-10-11 16:42:38,766 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 16:42:38,766 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 631 transitions. [2024-10-11 16:42:38,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-11 16:42:38,770 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:42:38,770 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 16:42:38,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 16:42:38,771 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:42:38,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:42:38,772 INFO L85 PathProgramCache]: Analyzing trace with hash 182152541, now seen corresponding path program 1 times [2024-10-11 16:42:38,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:42:38,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096723141] [2024-10-11 16:42:38,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:42:38,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:42:38,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:42:39,245 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 16:42:39,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:42:39,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096723141] [2024-10-11 16:42:39,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096723141] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:42:39,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:42:39,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 16:42:39,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638638800] [2024-10-11 16:42:39,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:42:39,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 16:42:39,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:42:39,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 16:42:39,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 16:42:39,252 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 16:42:39,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:42:39,433 INFO L93 Difference]: Finished difference Result 1039 states and 1531 transitions. [2024-10-11 16:42:39,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 16:42:39,434 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 16:42:39,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:42:39,439 INFO L225 Difference]: With dead ends: 1039 [2024-10-11 16:42:39,439 INFO L226 Difference]: Without dead ends: 812 [2024-10-11 16:42:39,440 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 16:42:39,441 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 16:42:39,441 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 16:42:39,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2024-10-11 16:42:39,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 430. [2024-10-11 16:42:39,479 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 16:42:39,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 633 transitions. [2024-10-11 16:42:39,486 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 633 transitions. Word has length 63 [2024-10-11 16:42:39,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:42:39,487 INFO L471 AbstractCegarLoop]: Abstraction has 430 states and 633 transitions. [2024-10-11 16:42:39,487 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 16:42:39,487 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 633 transitions. [2024-10-11 16:42:39,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-10-11 16:42:39,489 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:42:39,490 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 16:42:39,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 16:42:39,491 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:42:39,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:42:39,492 INFO L85 PathProgramCache]: Analyzing trace with hash 205336912, now seen corresponding path program 1 times [2024-10-11 16:42:39,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:42:39,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298991352] [2024-10-11 16:42:39,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:42:39,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:42:39,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:42:39,856 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 16:42:39,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:42:39,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298991352] [2024-10-11 16:42:39,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298991352] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:42:39,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:42:39,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 16:42:39,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136686296] [2024-10-11 16:42:39,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:42:39,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 16:42:39,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:42:39,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 16:42:39,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 16:42:39,860 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 16:42:39,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:42:39,973 INFO L93 Difference]: Finished difference Result 815 states and 1197 transitions. [2024-10-11 16:42:39,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 16:42:39,974 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 16:42:39,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:42:39,978 INFO L225 Difference]: With dead ends: 815 [2024-10-11 16:42:39,978 INFO L226 Difference]: Without dead ends: 388 [2024-10-11 16:42:39,980 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 16:42:39,981 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 16:42:39,984 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 16:42:39,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2024-10-11 16:42:39,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 388. [2024-10-11 16:42:39,999 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 16:42:40,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 556 transitions. [2024-10-11 16:42:40,004 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 556 transitions. Word has length 84 [2024-10-11 16:42:40,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:42:40,004 INFO L471 AbstractCegarLoop]: Abstraction has 388 states and 556 transitions. [2024-10-11 16:42:40,005 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 16:42:40,005 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 556 transitions. [2024-10-11 16:42:40,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-10-11 16:42:40,010 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:42:40,010 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 16:42:40,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 16:42:40,011 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:42:40,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:42:40,011 INFO L85 PathProgramCache]: Analyzing trace with hash 361770564, now seen corresponding path program 1 times [2024-10-11 16:42:40,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:42:40,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824421116] [2024-10-11 16:42:40,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:42:40,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:42:40,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:42:40,189 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 16:42:40,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:42:40,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824421116] [2024-10-11 16:42:40,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824421116] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:42:40,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:42:40,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 16:42:40,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961779115] [2024-10-11 16:42:40,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:42:40,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 16:42:40,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:42:40,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 16:42:40,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 16:42:40,194 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 16:42:40,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:42:40,310 INFO L93 Difference]: Finished difference Result 1025 states and 1471 transitions. [2024-10-11 16:42:40,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 16:42:40,311 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 16:42:40,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:42:40,314 INFO L225 Difference]: With dead ends: 1025 [2024-10-11 16:42:40,315 INFO L226 Difference]: Without dead ends: 640 [2024-10-11 16:42:40,316 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 16:42:40,316 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 16:42:40,317 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 16:42:40,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2024-10-11 16:42:40,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 637. [2024-10-11 16:42:40,332 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 16:42:40,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 914 transitions. [2024-10-11 16:42:40,335 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 914 transitions. Word has length 84 [2024-10-11 16:42:40,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:42:40,336 INFO L471 AbstractCegarLoop]: Abstraction has 637 states and 914 transitions. [2024-10-11 16:42:40,336 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 16:42:40,336 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 914 transitions. [2024-10-11 16:42:40,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-10-11 16:42:40,337 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:42:40,337 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 16:42:40,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 16:42:40,338 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:42:40,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:42:40,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1829937834, now seen corresponding path program 1 times [2024-10-11 16:42:40,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:42:40,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157478152] [2024-10-11 16:42:40,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:42:40,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:42:40,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:42:40,913 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-11 16:42:40,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:42:40,958 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-11 16:42:40,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:42:40,964 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 16:42:40,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:42:40,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157478152] [2024-10-11 16:42:40,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157478152] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:42:40,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237058621] [2024-10-11 16:42:40,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:42:40,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:42:40,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:42:40,970 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 16:42:40,971 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 16:42:41,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:42:41,473 INFO L255 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-11 16:42:41,485 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:42:41,520 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 16:42:41,550 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 16:42:42,421 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 16:42:42,421 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 16:42:42,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237058621] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:42:42,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 16:42:42,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 14 [2024-10-11 16:42:42,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919470525] [2024-10-11 16:42:42,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:42:42,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 16:42:42,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:42:42,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 16:42:42,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-10-11 16:42:42,425 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 16:42:43,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:42:43,510 INFO L93 Difference]: Finished difference Result 1529 states and 2195 transitions. [2024-10-11 16:42:43,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 16:42:43,511 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 16:42:43,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:42:43,515 INFO L225 Difference]: With dead ends: 1529 [2024-10-11 16:42:43,516 INFO L226 Difference]: Without dead ends: 935 [2024-10-11 16:42:43,520 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 16:42:43,520 INFO L432 NwaCegarLoop]: 527 mSDtfsCounter, 592 mSDsluCounter, 2347 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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 16:42:43,520 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 16:42:43,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2024-10-11 16:42:43,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 637. [2024-10-11 16:42:43,538 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 16:42:43,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 913 transitions. [2024-10-11 16:42:43,541 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 913 transitions. Word has length 97 [2024-10-11 16:42:43,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:42:43,542 INFO L471 AbstractCegarLoop]: Abstraction has 637 states and 913 transitions. [2024-10-11 16:42:43,542 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 16:42:43,542 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 913 transitions. [2024-10-11 16:42:43,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-10-11 16:42:43,543 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:42:43,543 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 16:42:43,565 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 16:42:43,744 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 16:42:43,745 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:42:43,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:42:43,746 INFO L85 PathProgramCache]: Analyzing trace with hash -226937138, now seen corresponding path program 1 times [2024-10-11 16:42:43,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:42:43,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658250706] [2024-10-11 16:42:43,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:42:43,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:42:44,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:42:44,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-11 16:42:44,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:42:44,260 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-11 16:42:44,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:42:44,267 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 16:42:44,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:42:44,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658250706] [2024-10-11 16:42:44,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658250706] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:42:44,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959435449] [2024-10-11 16:42:44,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:42:44,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:42:44,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:42:44,273 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 16:42:44,275 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 16:42:44,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:42:44,599 INFO L255 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-10-11 16:42:44,606 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:42:44,613 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 16:42:44,631 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 16:42:45,449 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 16:42:45,449 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 16:42:45,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959435449] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:42:45,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 16:42:45,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 15 [2024-10-11 16:42:45,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709091296] [2024-10-11 16:42:45,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:42:45,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 16:42:45,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:42:45,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 16:42:45,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-10-11 16:42:45,454 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 16:42:46,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:42:46,995 INFO L93 Difference]: Finished difference Result 1544 states and 2215 transitions. [2024-10-11 16:42:46,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 16:42:46,996 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 16:42:46,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:42:47,000 INFO L225 Difference]: With dead ends: 1544 [2024-10-11 16:42:47,000 INFO L226 Difference]: Without dead ends: 955 [2024-10-11 16:42:47,002 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 16:42:47,003 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 16:42:47,003 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 16:42:47,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2024-10-11 16:42:47,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 653. [2024-10-11 16:42:47,038 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 16:42:47,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 933 transitions. [2024-10-11 16:42:47,041 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 933 transitions. Word has length 98 [2024-10-11 16:42:47,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:42:47,042 INFO L471 AbstractCegarLoop]: Abstraction has 653 states and 933 transitions. [2024-10-11 16:42:47,042 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 16:42:47,042 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 933 transitions. [2024-10-11 16:42:47,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-11 16:42:47,043 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:42:47,044 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 16:42:47,063 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 16:42:47,246 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 16:42:47,246 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:42:47,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:42:47,247 INFO L85 PathProgramCache]: Analyzing trace with hash 2142865002, now seen corresponding path program 1 times [2024-10-11 16:42:47,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:42:47,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270769030] [2024-10-11 16:42:47,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:42:47,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:42:47,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:42:47,578 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-11 16:42:47,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:42:47,581 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-11 16:42:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:42:47,584 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 16:42:47,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:42:47,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270769030] [2024-10-11 16:42:47,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270769030] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:42:47,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:42:47,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 16:42:47,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014120169] [2024-10-11 16:42:47,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:42:47,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 16:42:47,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:42:47,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 16:42:47,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-11 16:42:47,586 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 16:42:48,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:42:48,359 INFO L93 Difference]: Finished difference Result 1261 states and 1817 transitions. [2024-10-11 16:42:48,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 16:42:48,359 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 16:42:48,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:42:48,364 INFO L225 Difference]: With dead ends: 1261 [2024-10-11 16:42:48,364 INFO L226 Difference]: Without dead ends: 665 [2024-10-11 16:42:48,365 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 16:42:48,366 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 16:42:48,366 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 16:42:48,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2024-10-11 16:42:48,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 661. [2024-10-11 16:42:48,385 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 16:42:48,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 943 transitions. [2024-10-11 16:42:48,388 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 943 transitions. Word has length 99 [2024-10-11 16:42:48,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:42:48,389 INFO L471 AbstractCegarLoop]: Abstraction has 661 states and 943 transitions. [2024-10-11 16:42:48,390 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 16:42:48,391 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 943 transitions. [2024-10-11 16:42:48,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-11 16:42:48,392 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:42:48,392 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 16:42:48,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 16:42:48,393 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:42:48,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:42:48,393 INFO L85 PathProgramCache]: Analyzing trace with hash -62021711, now seen corresponding path program 1 times [2024-10-11 16:42:48,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:42:48,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585576230] [2024-10-11 16:42:48,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:42:48,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:42:48,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:42:48,772 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-11 16:42:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:42:48,775 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-11 16:42:48,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:42:48,778 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 16:42:48,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:42:48,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585576230] [2024-10-11 16:42:48,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585576230] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:42:48,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:42:48,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 16:42:48,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646151715] [2024-10-11 16:42:48,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:42:48,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 16:42:48,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:42:48,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 16:42:48,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 16:42:48,780 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 16:42:49,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:42:49,432 INFO L93 Difference]: Finished difference Result 1276 states and 1837 transitions. [2024-10-11 16:42:49,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 16:42:49,433 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 16:42:49,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:42:49,436 INFO L225 Difference]: With dead ends: 1276 [2024-10-11 16:42:49,437 INFO L226 Difference]: Without dead ends: 669 [2024-10-11 16:42:49,438 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 16:42:49,438 INFO L432 NwaCegarLoop]: 468 mSDtfsCounter, 63 mSDsluCounter, 1955 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2024-10-11 16:42:49,439 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 2423 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-11 16:42:49,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2024-10-11 16:42:49,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 667. [2024-10-11 16:42:49,455 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 16:42:49,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 949 transitions. [2024-10-11 16:42:49,457 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 949 transitions. Word has length 99 [2024-10-11 16:42:49,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:42:49,458 INFO L471 AbstractCegarLoop]: Abstraction has 667 states and 949 transitions. [2024-10-11 16:42:49,458 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 16:42:49,458 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 949 transitions. [2024-10-11 16:42:49,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-10-11 16:42:49,459 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:42:49,459 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 16:42:49,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 16:42:49,459 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:42:49,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:42:49,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1077123426, now seen corresponding path program 1 times [2024-10-11 16:42:49,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:42:49,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412497972] [2024-10-11 16:42:49,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:42:49,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:42:49,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:42:49,810 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-11 16:42:49,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:42:49,843 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-11 16:42:49,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:42:49,847 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 16:42:49,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:42:49,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412497972] [2024-10-11 16:42:49,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412497972] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:42:49,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326070547] [2024-10-11 16:42:49,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:42:49,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:42:49,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:42:49,851 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 16:42:49,852 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 16:42:50,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:42:50,225 INFO L255 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 16:42:50,234 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:42:50,339 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 16:42:50,341 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 16:42:50,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326070547] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:42:50,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 16:42:50,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2024-10-11 16:42:50,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390989460] [2024-10-11 16:42:50,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:42:50,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 16:42:50,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:42:50,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 16:42:50,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-11 16:42:50,343 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 16:42:50,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:42:50,681 INFO L93 Difference]: Finished difference Result 1290 states and 1849 transitions. [2024-10-11 16:42:50,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 16:42:50,682 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 16:42:50,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:42:50,686 INFO L225 Difference]: With dead ends: 1290 [2024-10-11 16:42:50,686 INFO L226 Difference]: Without dead ends: 673 [2024-10-11 16:42:50,687 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 16:42:50,689 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 16:42:50,689 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 16:42:50,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2024-10-11 16:42:50,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 655. [2024-10-11 16:42:50,708 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 16:42:50,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 931 transitions. [2024-10-11 16:42:50,710 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 931 transitions. Word has length 100 [2024-10-11 16:42:50,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:42:50,711 INFO L471 AbstractCegarLoop]: Abstraction has 655 states and 931 transitions. [2024-10-11 16:42:50,711 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 16:42:50,712 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 931 transitions. [2024-10-11 16:42:50,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-10-11 16:42:50,713 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:42:50,713 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 16:42:50,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 16:42:50,913 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 16:42:50,914 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:42:50,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:42:50,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1473683765, now seen corresponding path program 1 times [2024-10-11 16:42:50,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:42:50,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93260044] [2024-10-11 16:42:50,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:42:50,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:42:51,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:42:51,191 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-11 16:42:51,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:42:51,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-11 16:42:51,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:42:51,228 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 16:42:51,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:42:51,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93260044] [2024-10-11 16:42:51,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93260044] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:42:51,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758712344] [2024-10-11 16:42:51,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:42:51,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:42:51,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:42:51,232 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 16:42:51,234 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 16:42:51,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:42:51,970 INFO L255 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 16:42:51,976 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:42:52,001 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 16:42:52,001 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 16:42:52,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758712344] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:42:52,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 16:42:52,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2024-10-11 16:42:52,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092139886] [2024-10-11 16:42:52,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:42:52,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 16:42:52,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:42:52,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 16:42:52,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 16:42:52,005 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 16:42:52,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:42:52,056 INFO L93 Difference]: Finished difference Result 1213 states and 1738 transitions. [2024-10-11 16:42:52,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 16:42:52,057 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 16:42:52,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:42:52,060 INFO L225 Difference]: With dead ends: 1213 [2024-10-11 16:42:52,060 INFO L226 Difference]: Without dead ends: 657 [2024-10-11 16:42:52,063 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 16:42:52,063 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 16:42:52,064 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 16:42:52,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2024-10-11 16:42:52,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 657. [2024-10-11 16:42:52,085 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 16:42:52,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 934 transitions. [2024-10-11 16:42:52,089 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 934 transitions. Word has length 100 [2024-10-11 16:42:52,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:42:52,090 INFO L471 AbstractCegarLoop]: Abstraction has 657 states and 934 transitions. [2024-10-11 16:42:52,090 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 16:42:52,090 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 934 transitions. [2024-10-11 16:42:52,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-10-11 16:42:52,091 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:42:52,092 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 16:42:52,116 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 16:42:52,292 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 16:42:52,293 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:42:52,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:42:52,293 INFO L85 PathProgramCache]: Analyzing trace with hash -499051429, now seen corresponding path program 1 times [2024-10-11 16:42:52,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:42:52,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692892097] [2024-10-11 16:42:52,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:42:52,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:42:52,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:42:52,703 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-11 16:42:52,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:42:52,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-11 16:42:52,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:42:52,785 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 16:42:52,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:42:52,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692892097] [2024-10-11 16:42:52,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692892097] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:42:52,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731185726] [2024-10-11 16:42:52,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:42:52,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:42:52,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:42:52,788 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 16:42:52,790 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 16:42:53,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:42:53,203 INFO L255 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 16:42:53,207 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:43:08,748 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 16:43:08,749 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 16:43:08,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731185726] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:43:08,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 16:43:08,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-10-11 16:43:08,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404567604] [2024-10-11 16:43:08,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:43:08,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 16:43:08,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:43:08,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 16:43:08,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-10-11 16:43:08,751 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 16:43:13,334 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 16:43:14,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-10-11 16:43:18,796 WARN L539 Checker$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 16:43:21,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-10-11 16:43:22,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-10-11 16:43:23,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:43:23,116 INFO L93 Difference]: Finished difference Result 1262 states and 1810 transitions. [2024-10-11 16:43:23,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 16:43:23,117 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 16:43:23,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:43:23,120 INFO L225 Difference]: With dead ends: 1262 [2024-10-11 16:43:23,120 INFO L226 Difference]: Without dead ends: 667 [2024-10-11 16:43:23,121 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-10-11 16:43:23,121 INFO L432 NwaCegarLoop]: 529 mSDtfsCounter, 12 mSDsluCounter, 2301 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2830 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2024-10-11 16:43:23,121 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2830 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 443 Invalid, 2 Unknown, 0 Unchecked, 14.3s Time] [2024-10-11 16:43:23,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2024-10-11 16:43:23,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 657. [2024-10-11 16:43:23,136 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 16:43:23,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 934 transitions. [2024-10-11 16:43:23,139 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 934 transitions. Word has length 102 [2024-10-11 16:43:23,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:43:23,139 INFO L471 AbstractCegarLoop]: Abstraction has 657 states and 934 transitions. [2024-10-11 16:43:23,139 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 16:43:23,139 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 934 transitions. [2024-10-11 16:43:23,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-11 16:43:23,140 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:43:23,140 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 16:43:23,160 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 16:43:23,341 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 16:43:23,341 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:43:23,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:43:23,342 INFO L85 PathProgramCache]: Analyzing trace with hash -96105653, now seen corresponding path program 1 times [2024-10-11 16:43:23,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:43:23,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828163080] [2024-10-11 16:43:23,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:43:23,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:43:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:43:23,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-11 16:43:23,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:43:23,812 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-11 16:43:23,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:43:23,816 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 16:43:23,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:43:23,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828163080] [2024-10-11 16:43:23,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828163080] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:43:23,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:43:23,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-11 16:43:23,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707564861] [2024-10-11 16:43:23,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:43:23,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 16:43:23,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:43:23,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 16:43:23,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-10-11 16:43:23,819 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 16:43:25,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:43:25,236 INFO L93 Difference]: Finished difference Result 1284 states and 1839 transitions. [2024-10-11 16:43:25,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 16:43:25,237 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 16:43:25,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:43:25,239 INFO L225 Difference]: With dead ends: 1284 [2024-10-11 16:43:25,240 INFO L226 Difference]: Without dead ends: 689 [2024-10-11 16:43:25,243 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 16:43:25,243 INFO L432 NwaCegarLoop]: 463 mSDtfsCounter, 77 mSDsluCounter, 3579 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.3s IncrementalHoareTripleChecker+Time [2024-10-11 16:43:25,244 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 4042 Invalid, 1467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1461 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-11 16:43:25,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2024-10-11 16:43:25,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 677. [2024-10-11 16:43:25,261 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 16:43:25,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 958 transitions. [2024-10-11 16:43:25,264 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 958 transitions. Word has length 104 [2024-10-11 16:43:25,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:43:25,265 INFO L471 AbstractCegarLoop]: Abstraction has 677 states and 958 transitions. [2024-10-11 16:43:25,265 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 16:43:25,265 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 958 transitions. [2024-10-11 16:43:25,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-11 16:43:25,266 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:43:25,266 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 16:43:25,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 16:43:25,266 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:43:25,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:43:25,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1180147247, now seen corresponding path program 1 times [2024-10-11 16:43:25,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:43:25,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187048837] [2024-10-11 16:43:25,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:43:25,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:43:25,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:43:25,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-11 16:43:25,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:43:25,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-11 16:43:25,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:43:25,723 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 16:43:25,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:43:25,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187048837] [2024-10-11 16:43:25,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187048837] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:43:25,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355310838] [2024-10-11 16:43:25,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:43:25,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:43:25,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:43:25,725 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 16:43:25,727 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 16:43:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:43:26,386 INFO L255 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-11 16:43:26,388 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:43:26,905 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 16:43:26,905 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 16:43:26,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355310838] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:43:26,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 16:43:26,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2024-10-11 16:43:26,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134506754] [2024-10-11 16:43:26,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:43:26,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 16:43:26,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:43:26,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 16:43:26,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2024-10-11 16:43:26,907 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 16:43:28,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-11 16:43:29,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:43:29,528 INFO L93 Difference]: Finished difference Result 1312 states and 1873 transitions. [2024-10-11 16:43:29,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 16:43:29,529 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 16:43:29,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:43:29,531 INFO L225 Difference]: With dead ends: 1312 [2024-10-11 16:43:29,532 INFO L226 Difference]: Without dead ends: 707 [2024-10-11 16:43:29,533 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2024-10-11 16:43:29,533 INFO L432 NwaCegarLoop]: 530 mSDtfsCounter, 17 mSDsluCounter, 3748 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s 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, 2.6s IncrementalHoareTripleChecker+Time [2024-10-11 16:43:29,533 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4278 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-11 16:43:29,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2024-10-11 16:43:29,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 701. [2024-10-11 16:43:29,547 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 16:43:29,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 988 transitions. [2024-10-11 16:43:29,549 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 988 transitions. Word has length 104 [2024-10-11 16:43:29,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:43:29,550 INFO L471 AbstractCegarLoop]: Abstraction has 701 states and 988 transitions. [2024-10-11 16:43:29,550 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 16:43:29,550 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 988 transitions. [2024-10-11 16:43:29,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-11 16:43:29,551 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:43:29,551 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 16:43:29,572 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 16:43:29,751 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 16:43:29,752 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:43:29,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:43:29,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1368588298, now seen corresponding path program 1 times [2024-10-11 16:43:29,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:43:29,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655906399] [2024-10-11 16:43:29,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:43:29,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:43:29,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:43:30,093 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-11 16:43:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:43:30,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-11 16:43:30,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:43:30,175 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 16:43:30,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:43:30,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655906399] [2024-10-11 16:43:30,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655906399] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:43:30,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331100667] [2024-10-11 16:43:30,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:43:30,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:43:30,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:43:30,177 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 16:43:30,181 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 16:43:30,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:43:30,774 INFO L255 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-11 16:43:30,777 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:43:31,021 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 16:43:31,021 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 16:43:31,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331100667] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:43:31,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 16:43:31,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-10-11 16:43:31,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533133025] [2024-10-11 16:43:31,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:43:31,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 16:43:31,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:43:31,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 16:43:31,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-10-11 16:43:31,023 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 16:43:31,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:43:31,473 INFO L93 Difference]: Finished difference Result 1328 states and 1891 transitions. [2024-10-11 16:43:31,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 16:43:31,474 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 16:43:31,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:43:31,476 INFO L225 Difference]: With dead ends: 1328 [2024-10-11 16:43:31,476 INFO L226 Difference]: Without dead ends: 711 [2024-10-11 16:43:31,477 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 16:43:31,478 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, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 16:43:31,478 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2830 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 16:43:31,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2024-10-11 16:43:31,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 701. [2024-10-11 16:43:31,492 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 16:43:31,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 988 transitions. [2024-10-11 16:43:31,494 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 988 transitions. Word has length 104 [2024-10-11 16:43:31,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:43:31,494 INFO L471 AbstractCegarLoop]: Abstraction has 701 states and 988 transitions. [2024-10-11 16:43:31,494 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 16:43:31,494 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 988 transitions. [2024-10-11 16:43:31,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-10-11 16:43:31,495 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:43:31,495 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 16:43:31,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-11 16:43:31,696 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 16:43:31,696 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:43:31,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:43:31,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1943909614, now seen corresponding path program 1 times [2024-10-11 16:43:31,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:43:31,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617420069] [2024-10-11 16:43:31,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:43:31,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:43:31,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:43:31,990 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-11 16:43:31,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:43:32,066 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-11 16:43:32,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:43:32,071 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 16:43:32,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:43:32,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617420069] [2024-10-11 16:43:32,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617420069] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:43:32,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92886793] [2024-10-11 16:43:32,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:43:32,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:43:32,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:43:32,074 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 16:43:32,075 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 16:43:32,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:43:32,806 INFO L255 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 16:43:32,808 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:43:32,854 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 16:43:32,855 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 16:43:32,957 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 16:43:32,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92886793] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 16:43:32,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 16:43:32,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-10-11 16:43:32,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112076492] [2024-10-11 16:43:32,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 16:43:32,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 16:43:32,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:43:32,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 16:43:32,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-11 16:43:32,962 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 16:43:33,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:43:33,793 INFO L93 Difference]: Finished difference Result 1290 states and 1838 transitions. [2024-10-11 16:43:33,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 16:43:33,793 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 16:43:33,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:43:33,796 INFO L225 Difference]: With dead ends: 1290 [2024-10-11 16:43:33,796 INFO L226 Difference]: Without dead ends: 709 [2024-10-11 16:43:33,797 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 16:43:33,798 INFO L432 NwaCegarLoop]: 474 mSDtfsCounter, 60 mSDsluCounter, 3213 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2024-10-11 16:43:33,800 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 3687 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-11 16:43:33,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2024-10-11 16:43:33,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 709. [2024-10-11 16:43:33,818 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 16:43:33,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 1000 transitions. [2024-10-11 16:43:33,821 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 1000 transitions. Word has length 105 [2024-10-11 16:43:33,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:43:33,821 INFO L471 AbstractCegarLoop]: Abstraction has 709 states and 1000 transitions. [2024-10-11 16:43:33,821 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 16:43:33,821 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 1000 transitions. [2024-10-11 16:43:33,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-10-11 16:43:33,822 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:43:33,823 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 16:43:33,847 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 16:43:34,023 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 16:43:34,024 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:43:34,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:43:34,024 INFO L85 PathProgramCache]: Analyzing trace with hash -556429694, now seen corresponding path program 2 times [2024-10-11 16:43:34,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:43:34,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461398646] [2024-10-11 16:43:34,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:43:34,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:43:34,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:43:34,425 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-11 16:43:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:43:34,522 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-11 16:43:34,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:43:34,532 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 16:43:34,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:43:34,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461398646] [2024-10-11 16:43:34,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461398646] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:43:34,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535859587] [2024-10-11 16:43:34,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 16:43:34,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:43:34,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:43:34,534 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 16:43:34,536 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 16:43:36,278 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 16:43:36,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 16:43:36,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-11 16:43:36,284 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:43:36,288 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 16:43:36,303 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 16:43:37,027 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 16:43:37,027 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 16:43:37,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535859587] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:43:37,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 16:43:37,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 16 [2024-10-11 16:43:37,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832486924] [2024-10-11 16:43:37,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:43:37,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 16:43:37,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:43:37,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 16:43:37,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-10-11 16:43:37,034 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 16:43:38,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:43:38,200 INFO L93 Difference]: Finished difference Result 1629 states and 2313 transitions. [2024-10-11 16:43:38,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 16:43:38,201 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 16:43:38,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:43:38,205 INFO L225 Difference]: With dead ends: 1629 [2024-10-11 16:43:38,205 INFO L226 Difference]: Without dead ends: 994 [2024-10-11 16:43:38,206 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2024-10-11 16:43:38,208 INFO L432 NwaCegarLoop]: 570 mSDtfsCounter, 582 mSDsluCounter, 2869 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2024-10-11 16:43:38,208 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [586 Valid, 3439 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-11 16:43:38,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2024-10-11 16:43:38,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 696. [2024-10-11 16:43:38,228 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 16:43:38,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 984 transitions. [2024-10-11 16:43:38,231 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 984 transitions. Word has length 109 [2024-10-11 16:43:38,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:43:38,231 INFO L471 AbstractCegarLoop]: Abstraction has 696 states and 984 transitions. [2024-10-11 16:43:38,231 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 16:43:38,231 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 984 transitions. [2024-10-11 16:43:38,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-10-11 16:43:38,232 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:43:38,233 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 16:43:38,255 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 16:43:38,433 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 16:43:38,434 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:43:38,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:43:38,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1974490594, now seen corresponding path program 1 times [2024-10-11 16:43:38,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:43:38,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546213919] [2024-10-11 16:43:38,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:43:38,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:43:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:43:38,766 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-11 16:43:38,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:43:38,857 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-11 16:43:38,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:43:38,867 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 16:43:38,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:43:38,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546213919] [2024-10-11 16:43:38,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546213919] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:43:38,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379414081] [2024-10-11 16:43:38,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:43:38,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:43:38,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:43:38,870 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 16:43:38,871 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 16:43:39,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:43:39,373 INFO L255 TraceCheckSpWp]: Trace formula consists of 672 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-11 16:43:39,376 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:43:39,516 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 16:43:39,516 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 16:43:47,765 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 8 refuted. 2 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 16:43:47,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379414081] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 16:43:47,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 16:43:47,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 8] total 20 [2024-10-11 16:43:47,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066700595] [2024-10-11 16:43:47,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 16:43:47,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-11 16:43:47,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:43:47,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-11 16:43:47,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=280, Unknown=2, NotChecked=0, Total=380 [2024-10-11 16:43:47,768 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 16:43:48,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:43:48,894 INFO L93 Difference]: Finished difference Result 1297 states and 1853 transitions. [2024-10-11 16:43:48,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-11 16:43:48,895 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 16:43:48,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:43:48,898 INFO L225 Difference]: With dead ends: 1297 [2024-10-11 16:43:48,899 INFO L226 Difference]: Without dead ends: 707 [2024-10-11 16:43:48,900 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 206 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=268, Invalid=660, Unknown=2, NotChecked=0, Total=930 [2024-10-11 16:43:48,900 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 16:43:48,901 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 16:43:48,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2024-10-11 16:43:48,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 705. [2024-10-11 16:43:48,921 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 16:43:48,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 997 transitions. [2024-10-11 16:43:48,923 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 997 transitions. Word has length 109 [2024-10-11 16:43:48,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:43:48,924 INFO L471 AbstractCegarLoop]: Abstraction has 705 states and 997 transitions. [2024-10-11 16:43:48,924 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 16:43:48,924 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 997 transitions. [2024-10-11 16:43:48,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-10-11 16:43:48,925 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:43:48,925 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 16:43:48,946 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 16:43:49,129 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 16:43:49,130 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:43:49,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:43:49,130 INFO L85 PathProgramCache]: Analyzing trace with hash 493496388, now seen corresponding path program 2 times [2024-10-11 16:43:49,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:43:49,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232862482] [2024-10-11 16:43:49,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:43:49,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:43:49,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:43:49,529 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-11 16:43:49,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:43:49,710 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-11 16:43:49,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:43:49,732 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 16:43:49,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:43:49,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232862482] [2024-10-11 16:43:49,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232862482] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:43:49,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986663580] [2024-10-11 16:43:49,733 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 16:43:49,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:43:49,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:43:49,735 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 16:43:49,736 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