./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 a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7e63083161b3199c06a87ea66924e1f63d6865962e6a830baf344139b270d928 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 09:24:40,954 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 09:24:41,039 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 09:24:41,048 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 09:24:41,049 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 09:24:41,083 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 09:24:41,084 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 09:24:41,084 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 09:24:41,085 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 09:24:41,087 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 09:24:41,087 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 09:24:41,088 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 09:24:41,088 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 09:24:41,089 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 09:24:41,089 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 09:24:41,089 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 09:24:41,090 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 09:24:41,090 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 09:24:41,094 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 09:24:41,095 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 09:24:41,095 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 09:24:41,096 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 09:24:41,096 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 09:24:41,096 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 09:24:41,096 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 09:24:41,097 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 09:24:41,097 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 09:24:41,097 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 09:24:41,098 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 09:24:41,098 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 09:24:41,099 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 09:24:41,099 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 09:24:41,100 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 09:24:41,100 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 09:24:41,101 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 09:24:41,101 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 09:24:41,101 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 09:24:41,101 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 09:24:41,101 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 09:24:41,102 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 09:24:41,102 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 09:24:41,102 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 09:24:41,102 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e63083161b3199c06a87ea66924e1f63d6865962e6a830baf344139b270d928 [2024-10-13 09:24:41,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 09:24:41,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 09:24:41,424 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 09:24:41,427 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 09:24:41,428 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 09:24:41,429 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i [2024-10-13 09:24:42,915 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 09:24:43,214 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 09:24:43,215 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i [2024-10-13 09:24:43,247 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bb67d7f1/3b84654797bb42b399b05d58985a280f/FLAG38a9e22f2 [2024-10-13 09:24:43,502 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bb67d7f1/3b84654797bb42b399b05d58985a280f [2024-10-13 09:24:43,505 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 09:24:43,506 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 09:24:43,507 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 09:24:43,508 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 09:24:43,513 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 09:24:43,514 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:24:43" (1/1) ... [2024-10-13 09:24:43,517 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24f3c7f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:24:43, skipping insertion in model container [2024-10-13 09:24:43,517 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:24:43" (1/1) ... [2024-10-13 09:24:43,584 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 09:24:43,980 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] [2024-10-13 09:24:44,136 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] [2024-10-13 09:24:44,143 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 09:24:44,152 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 09:24:44,190 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] [2024-10-13 09:24:44,247 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] [2024-10-13 09:24:44,250 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 09:24:44,294 INFO L204 MainTranslator]: Completed translation [2024-10-13 09:24:44,295 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:24:44 WrapperNode [2024-10-13 09:24:44,295 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 09:24:44,297 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 09:24:44,297 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 09:24:44,297 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 09:24:44,329 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:24:44" (1/1) ... [2024-10-13 09:24:44,372 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:24:44" (1/1) ... [2024-10-13 09:24:44,467 INFO L138 Inliner]: procedures = 177, calls = 289, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1423 [2024-10-13 09:24:44,469 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 09:24:44,470 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 09:24:44,470 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 09:24:44,470 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 09:24:44,482 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:24:44" (1/1) ... [2024-10-13 09:24:44,482 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:24:44" (1/1) ... [2024-10-13 09:24:44,494 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:24:44" (1/1) ... [2024-10-13 09:24:44,573 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]. [2024-10-13 09:24:44,573 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:24:44" (1/1) ... [2024-10-13 09:24:44,574 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:24:44" (1/1) ... [2024-10-13 09:24:44,613 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:24:44" (1/1) ... [2024-10-13 09:24:44,633 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:24:44" (1/1) ... [2024-10-13 09:24:44,646 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:24:44" (1/1) ... [2024-10-13 09:24:44,659 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:24:44" (1/1) ... [2024-10-13 09:24:44,674 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 09:24:44,676 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 09:24:44,676 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 09:24:44,676 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 09:24:44,677 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:24:44" (1/1) ... [2024-10-13 09:24:44,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 09:24:44,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:24:44,715 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 09:24:44,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 09:24:44,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 09:24:44,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 09:24:44,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-13 09:24:44,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-13 09:24:44,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-13 09:24:44,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 09:24:44,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 09:24:44,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-13 09:24:44,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-10-13 09:24:44,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-10-13 09:24:44,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-10-13 09:24:44,771 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-10-13 09:24:44,771 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-10-13 09:24:44,771 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-10-13 09:24:44,772 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2024-10-13 09:24:44,772 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2024-10-13 09:24:44,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 09:24:44,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 09:24:44,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-13 09:24:44,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-13 09:24:44,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-13 09:24:44,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-13 09:24:44,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-13 09:24:44,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-13 09:24:44,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-13 09:24:44,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-13 09:24:44,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 09:24:44,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 09:24:44,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-13 09:24:44,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 09:24:44,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 09:24:45,023 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 09:24:45,025 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 09:24:46,618 INFO L? ?]: Removed 328 outVars from TransFormulas that were not future-live. [2024-10-13 09:24:46,619 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 09:24:46,674 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 09:24:46,675 INFO L314 CfgBuilder]: Removed 62 assume(true) statements. [2024-10-13 09:24:46,675 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:24:46 BoogieIcfgContainer [2024-10-13 09:24:46,675 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 09:24:46,678 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 09:24:46,678 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 09:24:46,683 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 09:24:46,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:24:43" (1/3) ... [2024-10-13 09:24:46,684 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7097fdca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:24:46, skipping insertion in model container [2024-10-13 09:24:46,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:24:44" (2/3) ... [2024-10-13 09:24:46,685 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7097fdca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:24:46, skipping insertion in model container [2024-10-13 09:24:46,685 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:24:46" (3/3) ... [2024-10-13 09:24:46,686 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test8-1.i [2024-10-13 09:24:46,705 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 09:24:46,705 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-13 09:24:46,776 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:24:46,783 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;@5fa01a00, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:24:46,783 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-13 09:24:46,790 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) [2024-10-13 09:24:46,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-13 09:24:46,796 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:24:46,796 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:24:46,797 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:24:46,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:24:46,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1181736163, now seen corresponding path program 1 times [2024-10-13 09:24:46,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:24:46,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235147393] [2024-10-13 09:24:46,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:24:46,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:24:46,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:24:46,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:24:46,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:24:46,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235147393] [2024-10-13 09:24:46,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235147393] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:24:46,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:24:46,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 09:24:46,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590080202] [2024-10-13 09:24:46,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:24:46,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 09:24:46,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:24:47,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 09:24:47,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 09:24:47,019 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) [2024-10-13 09:24:47,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 09:24:47,130 INFO L93 Difference]: Finished difference Result 859 states and 1418 transitions. [2024-10-13 09:24:47,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 09:24:47,133 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 [2024-10-13 09:24:47,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 09:24:47,149 INFO L225 Difference]: With dead ends: 859 [2024-10-13 09:24:47,149 INFO L226 Difference]: Without dead ends: 428 [2024-10-13 09:24:47,156 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 [2024-10-13 09:24:47,161 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 [2024-10-13 09:24:47,162 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] [2024-10-13 09:24:47,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2024-10-13 09:24:47,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 428. [2024-10-13 09:24:47,225 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) [2024-10-13 09:24:47,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 631 transitions. [2024-10-13 09:24:47,230 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 631 transitions. Word has length 8 [2024-10-13 09:24:47,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 09:24:47,231 INFO L471 AbstractCegarLoop]: Abstraction has 428 states and 631 transitions. [2024-10-13 09:24:47,231 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) [2024-10-13 09:24:47,231 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 631 transitions. [2024-10-13 09:24:47,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-13 09:24:47,234 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:24:47,235 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] [2024-10-13 09:24:47,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 09:24:47,235 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:24:47,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:24:47,236 INFO L85 PathProgramCache]: Analyzing trace with hash 182152541, now seen corresponding path program 1 times [2024-10-13 09:24:47,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:24:47,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788519662] [2024-10-13 09:24:47,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:24:47,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:24:47,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:24:47,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:24:47,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:24:47,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788519662] [2024-10-13 09:24:47,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788519662] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:24:47,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:24:47,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 09:24:47,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604963305] [2024-10-13 09:24:47,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:24:47,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 09:24:47,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:24:47,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 09:24:47,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 09:24:47,792 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) [2024-10-13 09:24:47,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 09:24:48,001 INFO L93 Difference]: Finished difference Result 1039 states and 1531 transitions. [2024-10-13 09:24:48,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 09:24:48,002 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 [2024-10-13 09:24:48,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 09:24:48,007 INFO L225 Difference]: With dead ends: 1039 [2024-10-13 09:24:48,008 INFO L226 Difference]: Without dead ends: 812 [2024-10-13 09:24:48,010 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 [2024-10-13 09:24:48,012 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 [2024-10-13 09:24:48,013 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] [2024-10-13 09:24:48,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2024-10-13 09:24:48,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 430. [2024-10-13 09:24:48,057 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) [2024-10-13 09:24:48,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 633 transitions. [2024-10-13 09:24:48,061 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 633 transitions. Word has length 63 [2024-10-13 09:24:48,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 09:24:48,061 INFO L471 AbstractCegarLoop]: Abstraction has 430 states and 633 transitions. [2024-10-13 09:24:48,062 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) [2024-10-13 09:24:48,062 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 633 transitions. [2024-10-13 09:24:48,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-10-13 09:24:48,066 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:24:48,066 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] [2024-10-13 09:24:48,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 09:24:48,067 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:24:48,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:24:48,069 INFO L85 PathProgramCache]: Analyzing trace with hash 205336912, now seen corresponding path program 1 times [2024-10-13 09:24:48,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:24:48,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486060167] [2024-10-13 09:24:48,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:24:48,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:24:48,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:24:48,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:24:48,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:24:48,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486060167] [2024-10-13 09:24:48,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486060167] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:24:48,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:24:48,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 09:24:48,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372708481] [2024-10-13 09:24:48,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:24:48,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 09:24:48,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:24:48,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 09:24:48,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 09:24:48,425 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) [2024-10-13 09:24:48,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 09:24:48,548 INFO L93 Difference]: Finished difference Result 815 states and 1197 transitions. [2024-10-13 09:24:48,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 09:24:48,549 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 [2024-10-13 09:24:48,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 09:24:48,551 INFO L225 Difference]: With dead ends: 815 [2024-10-13 09:24:48,551 INFO L226 Difference]: Without dead ends: 388 [2024-10-13 09:24:48,552 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 [2024-10-13 09:24:48,553 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 [2024-10-13 09:24:48,554 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] [2024-10-13 09:24:48,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2024-10-13 09:24:48,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 388. [2024-10-13 09:24:48,564 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) [2024-10-13 09:24:48,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 556 transitions. [2024-10-13 09:24:48,568 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 556 transitions. Word has length 84 [2024-10-13 09:24:48,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 09:24:48,568 INFO L471 AbstractCegarLoop]: Abstraction has 388 states and 556 transitions. [2024-10-13 09:24:48,568 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) [2024-10-13 09:24:48,569 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 556 transitions. [2024-10-13 09:24:48,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-10-13 09:24:48,571 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:24:48,571 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] [2024-10-13 09:24:48,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 09:24:48,572 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:24:48,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:24:48,573 INFO L85 PathProgramCache]: Analyzing trace with hash 361770564, now seen corresponding path program 1 times [2024-10-13 09:24:48,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:24:48,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081881627] [2024-10-13 09:24:48,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:24:48,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:24:48,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:24:48,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:24:48,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:24:48,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081881627] [2024-10-13 09:24:48,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081881627] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:24:48,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:24:48,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 09:24:48,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405773538] [2024-10-13 09:24:48,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:24:48,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:24:48,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:24:48,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:24:48,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:24:48,773 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) [2024-10-13 09:24:48,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 09:24:48,888 INFO L93 Difference]: Finished difference Result 1025 states and 1471 transitions. [2024-10-13 09:24:48,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:24:48,889 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 [2024-10-13 09:24:48,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 09:24:48,893 INFO L225 Difference]: With dead ends: 1025 [2024-10-13 09:24:48,893 INFO L226 Difference]: Without dead ends: 640 [2024-10-13 09:24:48,894 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 [2024-10-13 09:24:48,895 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 [2024-10-13 09:24:48,899 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] [2024-10-13 09:24:48,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2024-10-13 09:24:48,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 637. [2024-10-13 09:24:48,923 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) [2024-10-13 09:24:48,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 914 transitions. [2024-10-13 09:24:48,927 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 914 transitions. Word has length 84 [2024-10-13 09:24:48,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 09:24:48,929 INFO L471 AbstractCegarLoop]: Abstraction has 637 states and 914 transitions. [2024-10-13 09:24:48,929 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) [2024-10-13 09:24:48,929 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 914 transitions. [2024-10-13 09:24:48,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-10-13 09:24:48,933 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:24:48,933 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] [2024-10-13 09:24:48,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 09:24:48,934 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:24:48,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:24:48,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1829937834, now seen corresponding path program 1 times [2024-10-13 09:24:48,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:24:48,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625273917] [2024-10-13 09:24:48,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:24:48,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:24:49,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:24:49,570 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-13 09:24:49,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:24:49,612 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-13 09:24:49,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:24:49,620 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 09:24:49,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:24:49,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625273917] [2024-10-13 09:24:49,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625273917] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:24:49,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038519191] [2024-10-13 09:24:49,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:24:49,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:24:49,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:24:49,627 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:24:49,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 09:24:50,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:24:50,183 INFO L255 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-13 09:24:50,194 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:24:50,246 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 [2024-10-13 09:24:50,281 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 [2024-10-13 09:24:51,180 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 09:24:51,181 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:24:51,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038519191] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:24:51,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:24:51,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 14 [2024-10-13 09:24:51,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304604251] [2024-10-13 09:24:51,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:24:51,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 09:24:51,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:24:51,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 09:24:51,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-10-13 09:24:51,186 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) [2024-10-13 09:24:52,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 09:24:52,294 INFO L93 Difference]: Finished difference Result 1529 states and 2195 transitions. [2024-10-13 09:24:52,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 09:24:52,297 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 [2024-10-13 09:24:52,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 09:24:52,302 INFO L225 Difference]: With dead ends: 1529 [2024-10-13 09:24:52,303 INFO L226 Difference]: Without dead ends: 935 [2024-10-13 09:24:52,304 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 [2024-10-13 09:24:52,306 INFO L432 NwaCegarLoop]: 527 mSDtfsCounter, 592 mSDsluCounter, 2347 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 2874 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-13 09:24:52,307 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 2874 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-13 09:24:52,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2024-10-13 09:24:52,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 637. [2024-10-13 09:24:52,330 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) [2024-10-13 09:24:52,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 913 transitions. [2024-10-13 09:24:52,334 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 913 transitions. Word has length 97 [2024-10-13 09:24:52,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 09:24:52,335 INFO L471 AbstractCegarLoop]: Abstraction has 637 states and 913 transitions. [2024-10-13 09:24:52,335 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) [2024-10-13 09:24:52,335 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 913 transitions. [2024-10-13 09:24:52,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-10-13 09:24:52,337 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:24:52,337 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, 1] [2024-10-13 09:24:52,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-13 09:24:52,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:24:52,544 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:24:52,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:24:52,544 INFO L85 PathProgramCache]: Analyzing trace with hash -226937138, now seen corresponding path program 1 times [2024-10-13 09:24:52,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:24:52,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459050357] [2024-10-13 09:24:52,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:24:52,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:24:52,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:24:53,029 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-13 09:24:53,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:24:53,064 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-13 09:24:53,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:24:53,069 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 09:24:53,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:24:53,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459050357] [2024-10-13 09:24:53,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459050357] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:24:53,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957758697] [2024-10-13 09:24:53,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:24:53,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:24:53,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:24:53,073 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:24:53,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 09:24:53,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:24:53,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-10-13 09:24:53,396 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:24:53,405 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 [2024-10-13 09:24:53,422 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 [2024-10-13 09:24:54,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 09:24:54,275 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:24:54,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957758697] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:24:54,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:24:54,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 15 [2024-10-13 09:24:54,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233542739] [2024-10-13 09:24:54,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:24:54,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 09:24:54,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:24:54,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 09:24:54,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-10-13 09:24:54,277 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) [2024-10-13 09:24:55,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 09:24:55,851 INFO L93 Difference]: Finished difference Result 1544 states and 2215 transitions. [2024-10-13 09:24:55,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-13 09:24:55,852 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 [2024-10-13 09:24:55,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 09:24:55,856 INFO L225 Difference]: With dead ends: 1544 [2024-10-13 09:24:55,856 INFO L226 Difference]: Without dead ends: 955 [2024-10-13 09:24:55,858 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 [2024-10-13 09:24:55,859 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 [2024-10-13 09:24:55,859 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] [2024-10-13 09:24:55,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2024-10-13 09:24:55,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 653. [2024-10-13 09:24:55,883 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) [2024-10-13 09:24:55,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 933 transitions. [2024-10-13 09:24:55,886 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 933 transitions. Word has length 98 [2024-10-13 09:24:55,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 09:24:55,887 INFO L471 AbstractCegarLoop]: Abstraction has 653 states and 933 transitions. [2024-10-13 09:24:55,887 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) [2024-10-13 09:24:55,887 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 933 transitions. [2024-10-13 09:24:55,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-13 09:24:55,888 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:24:55,888 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] [2024-10-13 09:24:55,909 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 09:24:56,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-13 09:24:56,090 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:24:56,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:24:56,090 INFO L85 PathProgramCache]: Analyzing trace with hash 2142865002, now seen corresponding path program 1 times [2024-10-13 09:24:56,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:24:56,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420597740] [2024-10-13 09:24:56,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:24:56,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:24:56,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:24:56,525 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-13 09:24:56,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:24:56,532 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-13 09:24:56,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:24:56,536 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 09:24:56,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:24:56,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420597740] [2024-10-13 09:24:56,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420597740] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:24:56,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:24:56,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-13 09:24:56,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653416142] [2024-10-13 09:24:56,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:24:56,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 09:24:56,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:24:56,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 09:24:56,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-13 09:24:56,539 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) [2024-10-13 09:24:57,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 09:24:57,349 INFO L93 Difference]: Finished difference Result 1261 states and 1817 transitions. [2024-10-13 09:24:57,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 09:24:57,350 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 [2024-10-13 09:24:57,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 09:24:57,353 INFO L225 Difference]: With dead ends: 1261 [2024-10-13 09:24:57,353 INFO L226 Difference]: Without dead ends: 665 [2024-10-13 09:24:57,354 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 [2024-10-13 09:24:57,355 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, 0.8s IncrementalHoareTripleChecker+Time [2024-10-13 09:24:57,355 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 2790 Invalid, 937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-13 09:24:57,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2024-10-13 09:24:57,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 661. [2024-10-13 09:24:57,372 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) [2024-10-13 09:24:57,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 943 transitions. [2024-10-13 09:24:57,374 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 943 transitions. Word has length 99 [2024-10-13 09:24:57,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 09:24:57,375 INFO L471 AbstractCegarLoop]: Abstraction has 661 states and 943 transitions. [2024-10-13 09:24:57,375 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) [2024-10-13 09:24:57,378 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 943 transitions. [2024-10-13 09:24:57,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-13 09:24:57,379 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:24:57,379 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] [2024-10-13 09:24:57,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 09:24:57,379 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:24:57,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:24:57,380 INFO L85 PathProgramCache]: Analyzing trace with hash -62021711, now seen corresponding path program 1 times [2024-10-13 09:24:57,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:24:57,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301092187] [2024-10-13 09:24:57,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:24:57,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:24:57,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:24:57,742 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-13 09:24:57,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:24:57,745 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-13 09:24:57,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:24:57,749 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 09:24:57,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:24:57,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301092187] [2024-10-13 09:24:57,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301092187] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:24:57,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:24:57,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-13 09:24:57,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074949131] [2024-10-13 09:24:57,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:24:57,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 09:24:57,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:24:57,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 09:24:57,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-13 09:24:57,752 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) [2024-10-13 09:24:58,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 09:24:58,481 INFO L93 Difference]: Finished difference Result 1276 states and 1837 transitions. [2024-10-13 09:24:58,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 09:24:58,481 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 [2024-10-13 09:24:58,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 09:24:58,485 INFO L225 Difference]: With dead ends: 1276 [2024-10-13 09:24:58,485 INFO L226 Difference]: Without dead ends: 669 [2024-10-13 09:24:58,489 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 [2024-10-13 09:24:58,490 INFO L432 NwaCegarLoop]: 468 mSDtfsCounter, 63 mSDsluCounter, 1955 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 2423 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-13 09:24:58,490 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 2423 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-13 09:24:58,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2024-10-13 09:24:58,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 667. [2024-10-13 09:24:58,512 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) [2024-10-13 09:24:58,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 949 transitions. [2024-10-13 09:24:58,515 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 949 transitions. Word has length 99 [2024-10-13 09:24:58,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 09:24:58,516 INFO L471 AbstractCegarLoop]: Abstraction has 667 states and 949 transitions. [2024-10-13 09:24:58,516 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) [2024-10-13 09:24:58,516 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 949 transitions. [2024-10-13 09:24:58,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-10-13 09:24:58,519 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:24:58,519 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] [2024-10-13 09:24:58,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 09:24:58,519 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:24:58,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:24:58,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1077123426, now seen corresponding path program 1 times [2024-10-13 09:24:58,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:24:58,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667733660] [2024-10-13 09:24:58,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:24:58,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:24:58,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:24:58,889 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-13 09:24:58,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:24:58,915 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-13 09:24:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:24:58,919 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 09:24:58,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:24:58,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667733660] [2024-10-13 09:24:58,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667733660] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:24:58,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177312367] [2024-10-13 09:24:58,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:24:58,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:24:58,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:24:58,922 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:24:58,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 09:24:59,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:24:59,279 INFO L255 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-13 09:24:59,285 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:24:59,385 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 09:24:59,386 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:24:59,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177312367] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:24:59,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:24:59,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2024-10-13 09:24:59,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236631808] [2024-10-13 09:24:59,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:24:59,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 09:24:59,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:24:59,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 09:24:59,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-13 09:24:59,388 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) [2024-10-13 09:24:59,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 09:24:59,737 INFO L93 Difference]: Finished difference Result 1290 states and 1849 transitions. [2024-10-13 09:24:59,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 09:24:59,738 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 [2024-10-13 09:24:59,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 09:24:59,743 INFO L225 Difference]: With dead ends: 1290 [2024-10-13 09:24:59,743 INFO L226 Difference]: Without dead ends: 673 [2024-10-13 09:24:59,745 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 [2024-10-13 09:24:59,747 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 [2024-10-13 09:24:59,747 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] [2024-10-13 09:24:59,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2024-10-13 09:24:59,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 655. [2024-10-13 09:24:59,766 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) [2024-10-13 09:24:59,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 931 transitions. [2024-10-13 09:24:59,769 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 931 transitions. Word has length 100 [2024-10-13 09:24:59,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 09:24:59,769 INFO L471 AbstractCegarLoop]: Abstraction has 655 states and 931 transitions. [2024-10-13 09:24:59,770 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) [2024-10-13 09:24:59,770 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 931 transitions. [2024-10-13 09:24:59,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-10-13 09:24:59,771 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:24:59,771 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] [2024-10-13 09:24:59,791 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 09:24:59,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:24:59,976 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:24:59,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:24:59,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1473683765, now seen corresponding path program 1 times [2024-10-13 09:24:59,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:24:59,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472251421] [2024-10-13 09:24:59,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:24:59,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:25:00,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:25:00,269 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-13 09:25:00,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:25:00,296 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-13 09:25:00,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:25:00,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 09:25:00,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:25:00,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472251421] [2024-10-13 09:25:00,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472251421] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:25:00,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327562837] [2024-10-13 09:25:00,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:25:00,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:25:00,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:25:00,304 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:25:00,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 09:25:01,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:25:01,031 INFO L255 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-13 09:25:01,037 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:25:01,058 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 09:25:01,059 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:25:01,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327562837] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:25:01,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:25:01,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2024-10-13 09:25:01,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535764269] [2024-10-13 09:25:01,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:25:01,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 09:25:01,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:25:01,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 09:25:01,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:25:01,062 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) [2024-10-13 09:25:01,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 09:25:01,115 INFO L93 Difference]: Finished difference Result 1213 states and 1738 transitions. [2024-10-13 09:25:01,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 09:25:01,117 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 [2024-10-13 09:25:01,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 09:25:01,120 INFO L225 Difference]: With dead ends: 1213 [2024-10-13 09:25:01,120 INFO L226 Difference]: Without dead ends: 657 [2024-10-13 09:25:01,122 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 [2024-10-13 09:25:01,122 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 [2024-10-13 09:25:01,123 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] [2024-10-13 09:25:01,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2024-10-13 09:25:01,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 657. [2024-10-13 09:25:01,142 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) [2024-10-13 09:25:01,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 934 transitions. [2024-10-13 09:25:01,146 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 934 transitions. Word has length 100 [2024-10-13 09:25:01,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 09:25:01,146 INFO L471 AbstractCegarLoop]: Abstraction has 657 states and 934 transitions. [2024-10-13 09:25:01,146 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) [2024-10-13 09:25:01,147 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 934 transitions. [2024-10-13 09:25:01,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-10-13 09:25:01,147 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:25:01,148 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] [2024-10-13 09:25:01,174 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 09:25:01,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:25:01,348 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:25:01,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:25:01,349 INFO L85 PathProgramCache]: Analyzing trace with hash -499051429, now seen corresponding path program 1 times [2024-10-13 09:25:01,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:25:01,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027173457] [2024-10-13 09:25:01,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:25:01,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:25:01,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:25:01,821 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-13 09:25:01,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:25:01,894 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-13 09:25:01,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:25:01,899 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 09:25:01,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:25:01,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027173457] [2024-10-13 09:25:01,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027173457] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:25:01,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186167256] [2024-10-13 09:25:01,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:25:01,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:25:01,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:25:01,903 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:25:01,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 09:25:02,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:25:02,311 INFO L255 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-13 09:25:02,316 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:25:11,721 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-13 09:25:11,721 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:25:11,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186167256] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:25:11,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:25:11,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-10-13 09:25:11,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837989232] [2024-10-13 09:25:11,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:25:11,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 09:25:11,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:25:11,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 09:25:11,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-10-13 09:25:11,723 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) [2024-10-13 09:25:16,066 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] [2024-10-13 09:25:20,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-10-13 09:25:24,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-10-13 09:25:28,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-10-13 09:25:30,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.41s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-10-13 09:25:32,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-10-13 09:25:36,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-10-13 09:25:38,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.41s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-10-13 09:25:39,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 09:25:39,297 INFO L93 Difference]: Finished difference Result 1264 states and 1812 transitions. [2024-10-13 09:25:39,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 09:25:39,298 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 [2024-10-13 09:25:39,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 09:25:39,301 INFO L225 Difference]: With dead ends: 1264 [2024-10-13 09:25:39,301 INFO L226 Difference]: Without dead ends: 669 [2024-10-13 09:25:39,302 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-10-13 09:25:39,303 INFO L432 NwaCegarLoop]: 529 mSDtfsCounter, 12 mSDsluCounter, 2301 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2830 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.5s IncrementalHoareTripleChecker+Time [2024-10-13 09:25:39,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2830 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 448 Invalid, 5 Unknown, 0 Unchecked, 27.5s Time] [2024-10-13 09:25:39,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2024-10-13 09:25:39,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 661. [2024-10-13 09:25:39,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 634 states have (on average 1.411671924290221) internal successors, (895), 651 states have internal predecessors, (895), 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) [2024-10-13 09:25:39,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 938 transitions. [2024-10-13 09:25:39,322 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 938 transitions. Word has length 102 [2024-10-13 09:25:39,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 09:25:39,322 INFO L471 AbstractCegarLoop]: Abstraction has 661 states and 938 transitions. [2024-10-13 09:25:39,322 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) [2024-10-13 09:25:39,322 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 938 transitions. [2024-10-13 09:25:39,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-13 09:25:39,324 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:25:39,324 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] [2024-10-13 09:25:39,345 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-13 09:25:39,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-13 09:25:39,529 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:25:39,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:25:39,530 INFO L85 PathProgramCache]: Analyzing trace with hash -96105653, now seen corresponding path program 1 times [2024-10-13 09:25:39,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:25:39,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461154497] [2024-10-13 09:25:39,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:25:39,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:25:39,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:25:39,995 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-13 09:25:39,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:25:40,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-13 09:25:40,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:25:40,005 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-13 09:25:40,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:25:40,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461154497] [2024-10-13 09:25:40,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461154497] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:25:40,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:25:40,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-13 09:25:40,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225608778] [2024-10-13 09:25:40,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:25:40,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 09:25:40,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:25:40,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 09:25:40,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-10-13 09:25:40,006 INFO L87 Difference]: Start difference. First operand 661 states and 938 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) [2024-10-13 09:25:41,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 09:25:41,456 INFO L93 Difference]: Finished difference Result 1290 states and 1845 transitions. [2024-10-13 09:25:41,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 09:25:41,457 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 [2024-10-13 09:25:41,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 09:25:41,460 INFO L225 Difference]: With dead ends: 1290 [2024-10-13 09:25:41,460 INFO L226 Difference]: Without dead ends: 693 [2024-10-13 09:25:41,462 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 [2024-10-13 09:25:41,462 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, 1.4s IncrementalHoareTripleChecker+Time [2024-10-13 09:25:41,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 4042 Invalid, 1467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1461 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-13 09:25:41,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2024-10-13 09:25:41,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 681. [2024-10-13 09:25:41,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 654 states have (on average 1.4051987767584098) internal successors, (919), 671 states have internal predecessors, (919), 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) [2024-10-13 09:25:41,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 962 transitions. [2024-10-13 09:25:41,481 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 962 transitions. Word has length 104 [2024-10-13 09:25:41,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 09:25:41,481 INFO L471 AbstractCegarLoop]: Abstraction has 681 states and 962 transitions. [2024-10-13 09:25:41,481 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) [2024-10-13 09:25:41,482 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 962 transitions. [2024-10-13 09:25:41,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-13 09:25:41,483 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:25:41,483 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] [2024-10-13 09:25:41,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-13 09:25:41,483 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:25:41,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:25:41,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1180147247, now seen corresponding path program 1 times [2024-10-13 09:25:41,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:25:41,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411790431] [2024-10-13 09:25:41,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:25:41,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:25:41,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:25:41,801 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-13 09:25:41,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:25:41,909 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-13 09:25:41,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:25:41,916 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 09:25:41,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:25:41,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411790431] [2024-10-13 09:25:41,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411790431] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:25:41,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791821259] [2024-10-13 09:25:41,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:25:41,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:25:41,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:25:41,919 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:25:41,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 09:25:42,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:25:42,732 INFO L255 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-13 09:25:42,735 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:25:43,649 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-13 09:25:43,649 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:25:43,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791821259] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:25:43,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:25:43,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2024-10-13 09:25:43,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649210519] [2024-10-13 09:25:43,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:25:43,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 09:25:43,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:25:43,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 09:25:43,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2024-10-13 09:25:43,651 INFO L87 Difference]: Start difference. First operand 681 states and 962 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) [2024-10-13 09:25:44,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 09:25:44,806 INFO L93 Difference]: Finished difference Result 1314 states and 1877 transitions. [2024-10-13 09:25:44,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 09:25:44,807 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 [2024-10-13 09:25:44,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 09:25:44,810 INFO L225 Difference]: With dead ends: 1314 [2024-10-13 09:25:44,810 INFO L226 Difference]: Without dead ends: 707 [2024-10-13 09:25:44,812 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2024-10-13 09:25:44,812 INFO L432 NwaCegarLoop]: 521 mSDtfsCounter, 18 mSDsluCounter, 3734 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 4255 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-13 09:25:44,812 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 4255 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-13 09:25:44,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2024-10-13 09:25:44,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 701. [2024-10-13 09:25:44,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 674 states have (on average 1.4050445103857567) internal successors, (947), 691 states have internal predecessors, (947), 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) [2024-10-13 09:25:44,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 990 transitions. [2024-10-13 09:25:44,845 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 990 transitions. Word has length 104 [2024-10-13 09:25:44,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 09:25:44,847 INFO L471 AbstractCegarLoop]: Abstraction has 701 states and 990 transitions. [2024-10-13 09:25:44,847 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) [2024-10-13 09:25:44,847 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 990 transitions. [2024-10-13 09:25:44,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-13 09:25:44,848 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:25:44,848 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] [2024-10-13 09:25:44,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-13 09:25:45,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:25:45,049 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:25:45,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:25:45,049 INFO L85 PathProgramCache]: Analyzing trace with hash -2048959178, now seen corresponding path program 1 times [2024-10-13 09:25:45,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:25:45,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947539980] [2024-10-13 09:25:45,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:25:45,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:25:45,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:25:45,424 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-13 09:25:45,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:25:45,506 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-13 09:25:45,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:25:45,512 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 09:25:45,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:25:45,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947539980] [2024-10-13 09:25:45,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947539980] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:25:45,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856740869] [2024-10-13 09:25:45,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:25:45,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:25:45,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:25:45,515 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:25:45,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 09:25:46,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:25:46,101 INFO L255 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-13 09:25:46,103 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:25:46,139 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 09:25:46,139 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 09:25:46,232 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 09:25:46,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856740869] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 09:25:46,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 09:25:46,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-10-13 09:25:46,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735009843] [2024-10-13 09:25:46,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 09:25:46,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 09:25:46,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:25:46,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 09:25:46,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-13 09:25:46,235 INFO L87 Difference]: Start difference. First operand 701 states and 990 transitions. Second operand has 11 states, 8 states have (on average 13.5) internal successors, (108), 10 states have internal predecessors, (108), 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) [2024-10-13 09:25:46,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 09:25:46,848 INFO L93 Difference]: Finished difference Result 1290 states and 1841 transitions. [2024-10-13 09:25:46,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-13 09:25:46,849 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 13.5) internal successors, (108), 10 states have internal predecessors, (108), 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 104 [2024-10-13 09:25:46,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 09:25:46,853 INFO L225 Difference]: With dead ends: 1290 [2024-10-13 09:25:46,853 INFO L226 Difference]: Without dead ends: 709 [2024-10-13 09:25:46,854 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2024-10-13 09:25:46,854 INFO L432 NwaCegarLoop]: 474 mSDtfsCounter, 61 mSDsluCounter, 1808 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 2282 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-13 09:25:46,855 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 2282 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-13 09:25:46,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2024-10-13 09:25:46,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 709. [2024-10-13 09:25:46,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 681 states have (on average 1.406754772393539) internal successors, (958), 698 states have internal predecessors, (958), 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) [2024-10-13 09:25:46,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 1002 transitions. [2024-10-13 09:25:46,886 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 1002 transitions. Word has length 104 [2024-10-13 09:25:46,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 09:25:46,886 INFO L471 AbstractCegarLoop]: Abstraction has 709 states and 1002 transitions. [2024-10-13 09:25:46,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 13.5) internal successors, (108), 10 states have internal predecessors, (108), 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) [2024-10-13 09:25:46,887 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 1002 transitions. [2024-10-13 09:25:46,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-10-13 09:25:46,887 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:25:46,888 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] [2024-10-13 09:25:46,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-13 09:25:47,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:25:47,088 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:25:47,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:25:47,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1313542490, now seen corresponding path program 2 times [2024-10-13 09:25:47,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:25:47,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641175934] [2024-10-13 09:25:47,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:25:47,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:25:47,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:25:47,447 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-13 09:25:47,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:25:47,570 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-13 09:25:47,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:25:47,580 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-13 09:25:47,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:25:47,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641175934] [2024-10-13 09:25:47,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641175934] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:25:47,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808041498] [2024-10-13 09:25:47,581 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 09:25:47,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:25:47,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:25:47,583 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:25:47,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 09:25:48,178 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 09:25:48,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 09:25:48,181 INFO L255 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-13 09:25:48,183 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:26:01,136 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 09:26:01,136 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:26:01,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808041498] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:26:01,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:26:01,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2024-10-13 09:26:01,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111590687] [2024-10-13 09:26:01,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:26:01,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 09:26:01,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:26:01,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 09:26:01,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2024-10-13 09:26:01,138 INFO L87 Difference]: Start difference. First operand 709 states and 1002 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 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) [2024-10-13 09:26:02,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 09:26:02,340 INFO L93 Difference]: Finished difference Result 1339 states and 1910 transitions. [2024-10-13 09:26:02,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 09:26:02,340 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 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 108 [2024-10-13 09:26:02,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 09:26:02,344 INFO L225 Difference]: With dead ends: 1339 [2024-10-13 09:26:02,344 INFO L226 Difference]: Without dead ends: 719 [2024-10-13 09:26:02,345 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2024-10-13 09:26:02,346 INFO L432 NwaCegarLoop]: 523 mSDtfsCounter, 14 mSDsluCounter, 2822 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 3345 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-13 09:26:02,346 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 3345 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-13 09:26:02,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2024-10-13 09:26:02,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 717. [2024-10-13 09:26:02,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 689 states have (on average 1.4049346879535558) internal successors, (968), 706 states have internal predecessors, (968), 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) [2024-10-13 09:26:02,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 1012 transitions. [2024-10-13 09:26:02,373 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 1012 transitions. Word has length 108 [2024-10-13 09:26:02,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 09:26:02,374 INFO L471 AbstractCegarLoop]: Abstraction has 717 states and 1012 transitions. [2024-10-13 09:26:02,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 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) [2024-10-13 09:26:02,374 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 1012 transitions. [2024-10-13 09:26:02,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-10-13 09:26:02,375 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:26:02,375 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] [2024-10-13 09:26:02,395 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-13 09:26:02,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-13 09:26:02,576 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:26:02,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:26:02,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1053609626, now seen corresponding path program 1 times [2024-10-13 09:26:02,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:26:02,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574604875] [2024-10-13 09:26:02,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:26:02,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:26:02,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:26:02,927 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-13 09:26:02,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:26:03,024 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-13 09:26:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:26:03,035 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-13 09:26:03,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:26:03,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574604875] [2024-10-13 09:26:03,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574604875] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:26:03,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561421808] [2024-10-13 09:26:03,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:26:03,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:26:03,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:26:03,038 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:26:03,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-13 09:26:03,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:26:03,567 INFO L255 TraceCheckSpWp]: Trace formula consists of 674 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-13 09:26:03,569 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:26:03,804 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 09:26:03,804 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:26:03,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561421808] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:26:03,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:26:03,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-10-13 09:26:03,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131338397] [2024-10-13 09:26:03,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:26:03,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 09:26:03,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:26:03,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 09:26:03,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-10-13 09:26:03,806 INFO L87 Difference]: Start difference. First operand 717 states and 1012 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) [2024-10-13 09:26:04,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 09:26:04,236 INFO L93 Difference]: Finished difference Result 1356 states and 1933 transitions. [2024-10-13 09:26:04,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 09:26:04,239 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 108 [2024-10-13 09:26:04,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 09:26:04,242 INFO L225 Difference]: With dead ends: 1356 [2024-10-13 09:26:04,243 INFO L226 Difference]: Without dead ends: 727 [2024-10-13 09:26:04,244 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-10-13 09:26:04,244 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 [2024-10-13 09:26:04,245 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] [2024-10-13 09:26:04,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2024-10-13 09:26:04,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 717. [2024-10-13 09:26:04,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 689 states have (on average 1.4049346879535558) internal successors, (968), 706 states have internal predecessors, (968), 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) [2024-10-13 09:26:04,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 1012 transitions. [2024-10-13 09:26:04,264 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 1012 transitions. Word has length 108 [2024-10-13 09:26:04,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 09:26:04,265 INFO L471 AbstractCegarLoop]: Abstraction has 717 states and 1012 transitions. [2024-10-13 09:26:04,265 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) [2024-10-13 09:26:04,265 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 1012 transitions. [2024-10-13 09:26:04,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-10-13 09:26:04,266 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:26:04,266 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] [2024-10-13 09:26:04,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-13 09:26:04,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-13 09:26:04,467 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:26:04,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:26:04,467 INFO L85 PathProgramCache]: Analyzing trace with hash -556429694, now seen corresponding path program 1 times [2024-10-13 09:26:04,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:26:04,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018399455] [2024-10-13 09:26:04,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:26:04,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:26:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:26:04,827 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-13 09:26:04,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat