./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f 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 ../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-assert-order-craig-803cd42-m [2024-11-22 17:26:20,080 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 17:26:20,147 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 17:26:20,151 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 17:26:20,151 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 17:26:20,183 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 17:26:20,185 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 17:26:20,185 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 17:26:20,186 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 17:26:20,187 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 17:26:20,187 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 17:26:20,187 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 17:26:20,188 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 17:26:20,190 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 17:26:20,190 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 17:26:20,190 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 17:26:20,191 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 17:26:20,191 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 17:26:20,191 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 17:26:20,191 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 17:26:20,192 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 17:26:20,193 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 17:26:20,194 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 17:26:20,194 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 17:26:20,194 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 17:26:20,195 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 17:26:20,195 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 17:26:20,195 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 17:26:20,196 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 17:26:20,196 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 17:26:20,196 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 17:26:20,197 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 17:26:20,197 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 17:26:20,197 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 17:26:20,197 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 17:26:20,198 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 17:26:20,198 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 17:26:20,198 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 17:26:20,199 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 17:26:20,199 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 17:26:20,199 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 17:26:20,200 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 17:26:20,200 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e63083161b3199c06a87ea66924e1f63d6865962e6a830baf344139b270d928 [2024-11-22 17:26:20,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 17:26:20,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 17:26:20,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 17:26:20,519 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 17:26:20,519 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 17:26:20,520 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i [2024-11-22 17:26:22,031 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 17:26:22,344 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 17:26:22,346 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i [2024-11-22 17:26:22,372 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c79846dbd/1a049854c2ed4dde9370865969aad5bd/FLAGb70db28ba [2024-11-22 17:26:22,599 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c79846dbd/1a049854c2ed4dde9370865969aad5bd [2024-11-22 17:26:22,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 17:26:22,603 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 17:26:22,604 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 17:26:22,605 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 17:26:22,611 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 17:26:22,611 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 05:26:22" (1/1) ... [2024-11-22 17:26:22,612 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4109e83f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:26:22, skipping insertion in model container [2024-11-22 17:26:22,613 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 05:26:22" (1/1) ... [2024-11-22 17:26:22,672 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 17:26:23,119 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i[33021,33034] [2024-11-22 17:26:23,269 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i[45234,45247] [2024-11-22 17:26:23,280 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 17:26:23,299 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 17:26:23,335 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i[33021,33034] [2024-11-22 17:26:23,404 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i[45234,45247] [2024-11-22 17:26:23,413 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 17:26:23,456 INFO L204 MainTranslator]: Completed translation [2024-11-22 17:26:23,457 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:26:23 WrapperNode [2024-11-22 17:26:23,457 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 17:26:23,458 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 17:26:23,458 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 17:26:23,458 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 17:26:23,463 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:26:23" (1/1) ... [2024-11-22 17:26:23,498 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:26:23" (1/1) ... [2024-11-22 17:26:23,573 INFO L138 Inliner]: procedures = 177, calls = 289, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1423 [2024-11-22 17:26:23,573 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 17:26:23,574 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 17:26:23,574 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 17:26:23,574 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 17:26:23,584 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:26:23" (1/1) ... [2024-11-22 17:26:23,585 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:26:23" (1/1) ... [2024-11-22 17:26:23,602 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:26:23" (1/1) ... [2024-11-22 17:26:23,666 INFO L175 MemorySlicer]: Split 256 memory accesses to 3 slices as follows [2, 220, 34]. 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, 50, 4]. [2024-11-22 17:26:23,667 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:26:23" (1/1) ... [2024-11-22 17:26:23,667 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:26:23" (1/1) ... [2024-11-22 17:26:23,717 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:26:23" (1/1) ... [2024-11-22 17:26:23,736 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:26:23" (1/1) ... [2024-11-22 17:26:23,746 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:26:23" (1/1) ... [2024-11-22 17:26:23,755 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:26:23" (1/1) ... [2024-11-22 17:26:23,764 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 17:26:23,765 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 17:26:23,765 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 17:26:23,765 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 17:26:23,766 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:26:23" (1/1) ... [2024-11-22 17:26:23,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 17:26:23,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:26:23,846 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 17:26:23,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 17:26:23,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 17:26:23,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 17:26:23,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-22 17:26:23,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-22 17:26:23,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-22 17:26:23,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 17:26:23,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 17:26:23,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-22 17:26:23,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-22 17:26:23,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-22 17:26:23,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-22 17:26:23,982 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-22 17:26:23,983 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-22 17:26:23,983 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-22 17:26:23,983 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2024-11-22 17:26:23,983 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2024-11-22 17:26:23,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-22 17:26:23,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 17:26:23,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-22 17:26:23,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-22 17:26:23,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-22 17:26:23,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-22 17:26:23,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-22 17:26:23,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-22 17:26:23,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-22 17:26:23,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-22 17:26:23,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 17:26:23,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 17:26:23,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-22 17:26:23,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 17:26:23,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 17:26:24,216 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 17:26:24,219 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 17:26:26,036 INFO L? ?]: Removed 328 outVars from TransFormulas that were not future-live. [2024-11-22 17:26:26,036 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 17:26:26,067 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 17:26:26,068 INFO L316 CfgBuilder]: Removed 62 assume(true) statements. [2024-11-22 17:26:26,068 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 05:26:26 BoogieIcfgContainer [2024-11-22 17:26:26,068 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 17:26:26,070 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 17:26:26,070 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 17:26:26,073 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 17:26:26,074 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 05:26:22" (1/3) ... [2024-11-22 17:26:26,074 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f5e8c5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 05:26:26, skipping insertion in model container [2024-11-22 17:26:26,075 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:26:23" (2/3) ... [2024-11-22 17:26:26,075 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f5e8c5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 05:26:26, skipping insertion in model container [2024-11-22 17:26:26,076 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 05:26:26" (3/3) ... [2024-11-22 17:26:26,077 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test8-1.i [2024-11-22 17:26:26,093 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 17:26:26,093 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-22 17:26:26,168 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 17:26:26,177 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;@2fdbddff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 17:26:26,178 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-22 17:26:26,184 INFO L276 IsEmpty]: Start isEmpty. Operand has 436 states, 410 states have (on average 1.6268292682926828) internal successors, (667), 427 states have internal predecessors, (667), 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) [2024-11-22 17:26:26,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-22 17:26:26,192 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:26:26,193 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:26:26,193 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:26:26,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:26:26,198 INFO L85 PathProgramCache]: Analyzing trace with hash -351686983, now seen corresponding path program 1 times [2024-11-22 17:26:26,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:26:26,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289226748] [2024-11-22 17:26:26,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:26:26,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:26:26,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:26:26,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:26:26,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:26:26,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289226748] [2024-11-22 17:26:26,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289226748] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:26:26,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:26:26,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 17:26:26,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472168368] [2024-11-22 17:26:26,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:26:26,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 17:26:26,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:26:26,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 17:26:26,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 17:26:26,433 INFO L87 Difference]: Start difference. First operand has 436 states, 410 states have (on average 1.6268292682926828) internal successors, (667), 427 states have internal predecessors, (667), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:26:26,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:26:26,522 INFO L93 Difference]: Finished difference Result 870 states and 1429 transitions. [2024-11-22 17:26:26,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 17:26:26,525 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2024-11-22 17:26:26,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:26:26,542 INFO L225 Difference]: With dead ends: 870 [2024-11-22 17:26:26,542 INFO L226 Difference]: Without dead ends: 432 [2024-11-22 17:26:26,550 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 17:26:26,554 INFO L432 NwaCegarLoop]: 639 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 17:26:26,556 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 17:26:26,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2024-11-22 17:26:26,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 432. [2024-11-22 17:26:26,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 407 states have (on average 1.461916461916462) internal successors, (595), 423 states have internal predecessors, (595), 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) [2024-11-22 17:26:26,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 635 transitions. [2024-11-22 17:26:26,643 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 635 transitions. Word has length 9 [2024-11-22 17:26:26,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:26:26,643 INFO L471 AbstractCegarLoop]: Abstraction has 432 states and 635 transitions. [2024-11-22 17:26:26,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:26:26,644 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 635 transitions. [2024-11-22 17:26:26,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-22 17:26:26,650 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:26:26,650 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] [2024-11-22 17:26:26,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 17:26:26,650 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:26:26,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:26:26,651 INFO L85 PathProgramCache]: Analyzing trace with hash 559678017, now seen corresponding path program 1 times [2024-11-22 17:26:26,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:26:26,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829549637] [2024-11-22 17:26:26,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:26:26,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:26:26,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:26:27,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:26:27,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:26:27,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829549637] [2024-11-22 17:26:27,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829549637] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:26:27,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:26:27,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 17:26:27,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036618085] [2024-11-22 17:26:27,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:26:27,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 17:26:27,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:26:27,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 17:26:27,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 17:26:27,152 INFO L87 Difference]: Start difference. First operand 432 states and 635 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:26:27,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:26:27,343 INFO L93 Difference]: Finished difference Result 1045 states and 1537 transitions. [2024-11-22 17:26:27,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 17:26:27,344 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 64 [2024-11-22 17:26:27,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:26:27,351 INFO L225 Difference]: With dead ends: 1045 [2024-11-22 17:26:27,352 INFO L226 Difference]: Without dead ends: 817 [2024-11-22 17:26:27,355 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 17:26:27,356 INFO L432 NwaCegarLoop]: 616 mSDtfsCounter, 547 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 1840 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 17:26:27,357 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 1840 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 17:26:27,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2024-11-22 17:26:27,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 434. [2024-11-22 17:26:27,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 409 states have (on average 1.4596577017114913) internal successors, (597), 425 states have internal predecessors, (597), 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) [2024-11-22 17:26:27,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 637 transitions. [2024-11-22 17:26:27,398 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 637 transitions. Word has length 64 [2024-11-22 17:26:27,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:26:27,400 INFO L471 AbstractCegarLoop]: Abstraction has 434 states and 637 transitions. [2024-11-22 17:26:27,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:26:27,400 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 637 transitions. [2024-11-22 17:26:27,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-22 17:26:27,407 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:26:27,407 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:26:27,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 17:26:27,407 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:26:27,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:26:27,408 INFO L85 PathProgramCache]: Analyzing trace with hash 616256236, now seen corresponding path program 1 times [2024-11-22 17:26:27,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:26:27,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968029274] [2024-11-22 17:26:27,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:26:27,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:26:27,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:26:27,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:26:27,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:26:27,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968029274] [2024-11-22 17:26:27,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968029274] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:26:27,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:26:27,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 17:26:27,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668951459] [2024-11-22 17:26:27,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:26:27,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 17:26:27,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:26:27,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 17:26:27,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 17:26:27,717 INFO L87 Difference]: Start difference. First operand 434 states and 637 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2024-11-22 17:26:27,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:26:27,820 INFO L93 Difference]: Finished difference Result 822 states and 1204 transitions. [2024-11-22 17:26:27,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 17:26:27,821 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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 85 [2024-11-22 17:26:27,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:26:27,824 INFO L225 Difference]: With dead ends: 822 [2024-11-22 17:26:27,824 INFO L226 Difference]: Without dead ends: 392 [2024-11-22 17:26:27,826 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 17:26:27,828 INFO L432 NwaCegarLoop]: 533 mSDtfsCounter, 30 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1580 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 17:26:27,830 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1580 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 17:26:27,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2024-11-22 17:26:27,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2024-11-22 17:26:27,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 367 states have (on average 1.4168937329700273) internal successors, (520), 383 states have internal predecessors, (520), 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) [2024-11-22 17:26:27,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 560 transitions. [2024-11-22 17:26:27,847 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 560 transitions. Word has length 85 [2024-11-22 17:26:27,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:26:27,848 INFO L471 AbstractCegarLoop]: Abstraction has 392 states and 560 transitions. [2024-11-22 17:26:27,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2024-11-22 17:26:27,848 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 560 transitions. [2024-11-22 17:26:27,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-22 17:26:27,852 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:26:27,852 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:26:27,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 17:26:27,853 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:26:27,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:26:27,853 INFO L85 PathProgramCache]: Analyzing trace with hash 772689888, now seen corresponding path program 1 times [2024-11-22 17:26:27,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:26:27,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142338822] [2024-11-22 17:26:27,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:26:27,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:26:27,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:26:28,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:26:28,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:26:28,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142338822] [2024-11-22 17:26:28,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142338822] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:26:28,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:26:28,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 17:26:28,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76208291] [2024-11-22 17:26:28,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:26:28,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 17:26:28,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:26:28,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 17:26:28,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 17:26:28,083 INFO L87 Difference]: Start difference. First operand 392 states and 560 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2024-11-22 17:26:28,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:26:28,195 INFO L93 Difference]: Finished difference Result 1032 states and 1478 transitions. [2024-11-22 17:26:28,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 17:26:28,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 85 [2024-11-22 17:26:28,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:26:28,200 INFO L225 Difference]: With dead ends: 1032 [2024-11-22 17:26:28,200 INFO L226 Difference]: Without dead ends: 644 [2024-11-22 17:26:28,203 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 17:26:28,203 INFO L432 NwaCegarLoop]: 740 mSDtfsCounter, 295 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 17:26:28,204 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 1269 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 17:26:28,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2024-11-22 17:26:28,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 641. [2024-11-22 17:26:28,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 615 states have (on average 1.424390243902439) internal successors, (876), 631 states have internal predecessors, (876), 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) [2024-11-22 17:26:28,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 918 transitions. [2024-11-22 17:26:28,224 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 918 transitions. Word has length 85 [2024-11-22 17:26:28,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:26:28,225 INFO L471 AbstractCegarLoop]: Abstraction has 641 states and 918 transitions. [2024-11-22 17:26:28,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2024-11-22 17:26:28,225 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 918 transitions. [2024-11-22 17:26:28,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-22 17:26:28,226 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:26:28,226 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] [2024-11-22 17:26:28,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 17:26:28,227 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:26:28,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:26:28,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1168982230, now seen corresponding path program 1 times [2024-11-22 17:26:28,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:26:28,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517667971] [2024-11-22 17:26:28,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:26:28,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:26:28,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:26:28,782 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 17:26:28,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:26:28,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517667971] [2024-11-22 17:26:28,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517667971] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 17:26:28,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001456149] [2024-11-22 17:26:28,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:26:28,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:26:28,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:26:28,786 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 17:26:28,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 17:26:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:26:29,142 INFO L255 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-22 17:26:29,156 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 17:26:29,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-22 17:26:29,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2024-11-22 17:26:30,204 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 17:26:30,205 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 17:26:30,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001456149] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:26:30,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 17:26:30,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [4] total 13 [2024-11-22 17:26:30,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752937396] [2024-11-22 17:26:30,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:26:30,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 17:26:30,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:26:30,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 17:26:30,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-22 17:26:30,209 INFO L87 Difference]: Start difference. First operand 641 states and 918 transitions. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 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) [2024-11-22 17:26:32,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:26:32,327 INFO L93 Difference]: Finished difference Result 1537 states and 2203 transitions. [2024-11-22 17:26:32,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 17:26:32,328 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 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 [2024-11-22 17:26:32,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:26:32,332 INFO L225 Difference]: With dead ends: 1537 [2024-11-22 17:26:32,332 INFO L226 Difference]: Without dead ends: 940 [2024-11-22 17:26:32,333 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2024-11-22 17:26:32,334 INFO L432 NwaCegarLoop]: 534 mSDtfsCounter, 588 mSDsluCounter, 3162 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 3696 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-22 17:26:32,334 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [592 Valid, 3696 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-22 17:26:32,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2024-11-22 17:26:32,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 641. [2024-11-22 17:26:32,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 615 states have (on average 1.4227642276422765) internal successors, (875), 631 states have internal predecessors, (875), 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) [2024-11-22 17:26:32,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 917 transitions. [2024-11-22 17:26:32,355 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 917 transitions. Word has length 100 [2024-11-22 17:26:32,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:26:32,355 INFO L471 AbstractCegarLoop]: Abstraction has 641 states and 917 transitions. [2024-11-22 17:26:32,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 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) [2024-11-22 17:26:32,355 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 917 transitions. [2024-11-22 17:26:32,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-22 17:26:32,356 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:26:32,356 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] [2024-11-22 17:26:32,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 17:26:32,557 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 [2024-11-22 17:26:32,558 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:26:32,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:26:32,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1907265882, now seen corresponding path program 1 times [2024-11-22 17:26:32,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:26:32,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382905610] [2024-11-22 17:26:32,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:26:32,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:26:32,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:26:33,000 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 17:26:33,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:26:33,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382905610] [2024-11-22 17:26:33,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382905610] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 17:26:33,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84813717] [2024-11-22 17:26:33,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:26:33,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:26:33,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:26:33,004 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 17:26:33,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 17:26:33,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:26:33,676 INFO L255 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-22 17:26:33,682 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 17:26:33,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-22 17:26:33,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2024-11-22 17:26:34,589 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 17:26:34,589 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 17:26:34,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84813717] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:26:34,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 17:26:34,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [4] total 14 [2024-11-22 17:26:34,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783033854] [2024-11-22 17:26:34,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:26:34,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 17:26:34,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:26:34,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 17:26:34,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-11-22 17:26:34,592 INFO L87 Difference]: Start difference. First operand 641 states and 917 transitions. Second operand has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 12 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) [2024-11-22 17:26:36,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-22 17:26:37,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:26:37,710 INFO L93 Difference]: Finished difference Result 1552 states and 2223 transitions. [2024-11-22 17:26:37,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 17:26:37,711 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 12 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 101 [2024-11-22 17:26:37,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:26:37,717 INFO L225 Difference]: With dead ends: 1552 [2024-11-22 17:26:37,718 INFO L226 Difference]: Without dead ends: 960 [2024-11-22 17:26:37,720 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2024-11-22 17:26:37,720 INFO L432 NwaCegarLoop]: 572 mSDtfsCounter, 651 mSDsluCounter, 3940 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 4512 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-22 17:26:37,721 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [655 Valid, 4512 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-22 17:26:37,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2024-11-22 17:26:37,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 657. [2024-11-22 17:26:37,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 631 states have (on average 1.4183835182250397) internal successors, (895), 647 states have internal predecessors, (895), 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) [2024-11-22 17:26:37,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 937 transitions. [2024-11-22 17:26:37,742 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 937 transitions. Word has length 101 [2024-11-22 17:26:37,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:26:37,742 INFO L471 AbstractCegarLoop]: Abstraction has 657 states and 937 transitions. [2024-11-22 17:26:37,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 12 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) [2024-11-22 17:26:37,742 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 937 transitions. [2024-11-22 17:26:37,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-22 17:26:37,743 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:26:37,744 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] [2024-11-22 17:26:37,758 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 17:26:37,947 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 [2024-11-22 17:26:37,948 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:26:37,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:26:37,950 INFO L85 PathProgramCache]: Analyzing trace with hash 281528894, now seen corresponding path program 1 times [2024-11-22 17:26:37,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:26:37,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489494290] [2024-11-22 17:26:37,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:26:37,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:26:38,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:26:38,343 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 17:26:38,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:26:38,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489494290] [2024-11-22 17:26:38,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489494290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:26:38,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:26:38,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 17:26:38,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193976509] [2024-11-22 17:26:38,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:26:38,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 17:26:38,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:26:38,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 17:26:38,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 17:26:38,346 INFO L87 Difference]: Start difference. First operand 657 states and 937 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), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 17:26:38,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:26:38,683 INFO L93 Difference]: Finished difference Result 1266 states and 1819 transitions. [2024-11-22 17:26:38,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 17:26:38,684 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), 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 102 [2024-11-22 17:26:38,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:26:38,687 INFO L225 Difference]: With dead ends: 1266 [2024-11-22 17:26:38,687 INFO L226 Difference]: Without dead ends: 667 [2024-11-22 17:26:38,689 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 17:26:38,689 INFO L432 NwaCegarLoop]: 531 mSDtfsCounter, 14 mSDsluCounter, 2335 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2866 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 17:26:38,690 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2866 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 17:26:38,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2024-11-22 17:26:38,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 665. [2024-11-22 17:26:38,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 639 states have (on average 1.4162754303599374) internal successors, (905), 655 states have internal predecessors, (905), 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) [2024-11-22 17:26:38,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 947 transitions. [2024-11-22 17:26:38,708 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 947 transitions. Word has length 102 [2024-11-22 17:26:38,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:26:38,709 INFO L471 AbstractCegarLoop]: Abstraction has 665 states and 947 transitions. [2024-11-22 17:26:38,709 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), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 17:26:38,709 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 947 transitions. [2024-11-22 17:26:38,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-22 17:26:38,710 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:26:38,710 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] [2024-11-22 17:26:38,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 17:26:38,711 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:26:38,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:26:38,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1195725371, now seen corresponding path program 1 times [2024-11-22 17:26:38,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:26:38,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471817949] [2024-11-22 17:26:38,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:26:38,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:26:38,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:26:39,073 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 17:26:39,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:26:39,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471817949] [2024-11-22 17:26:39,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471817949] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:26:39,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:26:39,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 17:26:39,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659729513] [2024-11-22 17:26:39,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:26:39,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 17:26:39,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:26:39,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 17:26:39,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 17:26:39,075 INFO L87 Difference]: Start difference. First operand 665 states and 947 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 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) [2024-11-22 17:26:39,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:26:39,333 INFO L93 Difference]: Finished difference Result 1281 states and 1839 transitions. [2024-11-22 17:26:39,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 17:26:39,334 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 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 102 [2024-11-22 17:26:39,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:26:39,338 INFO L225 Difference]: With dead ends: 1281 [2024-11-22 17:26:39,338 INFO L226 Difference]: Without dead ends: 671 [2024-11-22 17:26:39,340 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 17:26:39,341 INFO L432 NwaCegarLoop]: 543 mSDtfsCounter, 9 mSDsluCounter, 1422 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1965 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 17:26:39,341 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1965 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 17:26:39,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2024-11-22 17:26:39,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 671. [2024-11-22 17:26:39,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 645 states have (on average 1.4124031007751938) internal successors, (911), 661 states have internal predecessors, (911), 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) [2024-11-22 17:26:39,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 953 transitions. [2024-11-22 17:26:39,363 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 953 transitions. Word has length 102 [2024-11-22 17:26:39,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:26:39,364 INFO L471 AbstractCegarLoop]: Abstraction has 671 states and 953 transitions. [2024-11-22 17:26:39,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 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) [2024-11-22 17:26:39,364 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 953 transitions. [2024-11-22 17:26:39,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-22 17:26:39,367 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:26:39,367 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] [2024-11-22 17:26:39,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 17:26:39,368 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:26:39,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:26:39,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1344710638, now seen corresponding path program 1 times [2024-11-22 17:26:39,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:26:39,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550185206] [2024-11-22 17:26:39,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:26:39,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:26:39,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:26:39,679 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 17:26:39,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:26:39,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550185206] [2024-11-22 17:26:39,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550185206] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 17:26:39,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795619659] [2024-11-22 17:26:39,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:26:39,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:26:39,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:26:39,682 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 17:26:39,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 17:26:40,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:26:40,037 INFO L255 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-22 17:26:40,044 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 17:26:40,141 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 17:26:40,142 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 17:26:40,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795619659] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:26:40,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 17:26:40,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-22 17:26:40,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430680752] [2024-11-22 17:26:40,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:26:40,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 17:26:40,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:26:40,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 17:26:40,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-22 17:26:40,145 INFO L87 Difference]: Start difference. First operand 671 states and 953 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 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) [2024-11-22 17:26:40,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:26:40,491 INFO L93 Difference]: Finished difference Result 1297 states and 1856 transitions. [2024-11-22 17:26:40,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 17:26:40,492 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 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 103 [2024-11-22 17:26:40,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:26:40,495 INFO L225 Difference]: With dead ends: 1297 [2024-11-22 17:26:40,496 INFO L226 Difference]: Without dead ends: 677 [2024-11-22 17:26:40,497 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-22 17:26:40,498 INFO L432 NwaCegarLoop]: 533 mSDtfsCounter, 43 mSDsluCounter, 2361 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 2894 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 17:26:40,498 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 2894 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 17:26:40,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2024-11-22 17:26:40,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 659. [2024-11-22 17:26:40,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 633 states have (on average 1.410742496050553) internal successors, (893), 649 states have internal predecessors, (893), 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) [2024-11-22 17:26:40,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 935 transitions. [2024-11-22 17:26:40,523 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 935 transitions. Word has length 103 [2024-11-22 17:26:40,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:26:40,523 INFO L471 AbstractCegarLoop]: Abstraction has 659 states and 935 transitions. [2024-11-22 17:26:40,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 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) [2024-11-22 17:26:40,524 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 935 transitions. [2024-11-22 17:26:40,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-22 17:26:40,525 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:26:40,525 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] [2024-11-22 17:26:40,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-22 17:26:40,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:26:40,726 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:26:40,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:26:40,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1849641193, now seen corresponding path program 1 times [2024-11-22 17:26:40,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:26:40,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847767870] [2024-11-22 17:26:40,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:26:40,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:26:40,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:26:41,103 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 17:26:41,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:26:41,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847767870] [2024-11-22 17:26:41,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847767870] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 17:26:41,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256104595] [2024-11-22 17:26:41,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:26:41,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:26:41,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:26:41,107 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 17:26:41,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 17:26:41,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:26:41,567 INFO L255 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-22 17:26:41,571 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 17:26:56,167 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 17:26:56,168 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 17:26:56,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256104595] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:26:56,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 17:26:56,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-22 17:26:56,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300164288] [2024-11-22 17:26:56,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:26:56,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 17:26:56,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:26:56,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 17:26:56,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-22 17:26:56,170 INFO L87 Difference]: Start difference. First operand 659 states and 935 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 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) [2024-11-22 17:27:00,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-22 17:27:04,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-22 17:27:09,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-22 17:27:13,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-22 17:27:14,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-22 17:27:15,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:27:15,939 INFO L93 Difference]: Finished difference Result 1265 states and 1811 transitions. [2024-11-22 17:27:15,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 17:27:15,940 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 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 103 [2024-11-22 17:27:15,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:27:15,943 INFO L225 Difference]: With dead ends: 1265 [2024-11-22 17:27:15,943 INFO L226 Difference]: Without dead ends: 669 [2024-11-22 17:27:15,945 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-22 17:27:15,945 INFO L432 NwaCegarLoop]: 537 mSDtfsCounter, 12 mSDsluCounter, 2336 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 3 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2873 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.7s IncrementalHoareTripleChecker+Time [2024-11-22 17:27:15,945 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2873 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 423 Invalid, 4 Unknown, 0 Unchecked, 19.7s Time] [2024-11-22 17:27:15,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2024-11-22 17:27:15,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 659. [2024-11-22 17:27:15,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 633 states have (on average 1.410742496050553) internal successors, (893), 649 states have internal predecessors, (893), 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) [2024-11-22 17:27:15,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 935 transitions. [2024-11-22 17:27:15,966 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 935 transitions. Word has length 103 [2024-11-22 17:27:15,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:27:15,966 INFO L471 AbstractCegarLoop]: Abstraction has 659 states and 935 transitions. [2024-11-22 17:27:15,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 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) [2024-11-22 17:27:15,967 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 935 transitions. [2024-11-22 17:27:15,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-22 17:27:15,968 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:27:15,968 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:27:15,980 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 17:27:16,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:27:16,169 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:27:16,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:27:16,169 INFO L85 PathProgramCache]: Analyzing trace with hash 2092103431, now seen corresponding path program 1 times [2024-11-22 17:27:16,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:27:16,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605700217] [2024-11-22 17:27:16,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:27:16,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:27:16,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:27:16,635 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 17:27:16,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:27:16,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605700217] [2024-11-22 17:27:16,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605700217] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:27:16,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:27:16,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 17:27:16,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041856290] [2024-11-22 17:27:16,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:27:16,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 17:27:16,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:27:16,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 17:27:16,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-22 17:27:16,638 INFO L87 Difference]: Start difference. First operand 659 states and 935 transitions. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 17:27:17,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:27:17,239 INFO L93 Difference]: Finished difference Result 1287 states and 1840 transitions. [2024-11-22 17:27:17,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 17:27:17,240 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 1 states have call successors, (4), 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 105 [2024-11-22 17:27:17,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:27:17,244 INFO L225 Difference]: With dead ends: 1287 [2024-11-22 17:27:17,244 INFO L226 Difference]: Without dead ends: 691 [2024-11-22 17:27:17,245 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-22 17:27:17,246 INFO L432 NwaCegarLoop]: 538 mSDtfsCounter, 26 mSDsluCounter, 3322 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3860 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 17:27:17,246 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3860 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 17:27:17,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2024-11-22 17:27:17,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 679. [2024-11-22 17:27:17,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 653 states have (on average 1.4042879019908117) internal successors, (917), 669 states have internal predecessors, (917), 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) [2024-11-22 17:27:17,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 959 transitions. [2024-11-22 17:27:17,264 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 959 transitions. Word has length 105 [2024-11-22 17:27:17,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:27:17,264 INFO L471 AbstractCegarLoop]: Abstraction has 679 states and 959 transitions. [2024-11-22 17:27:17,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 17:27:17,265 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 959 transitions. [2024-11-22 17:27:17,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-22 17:27:17,267 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:27:17,267 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:27:17,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 17:27:17,267 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:27:17,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:27:17,268 INFO L85 PathProgramCache]: Analyzing trace with hash -926610965, now seen corresponding path program 1 times [2024-11-22 17:27:17,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:27:17,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415423910] [2024-11-22 17:27:17,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:27:17,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:27:17,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:27:17,556 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 17:27:17,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:27:17,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415423910] [2024-11-22 17:27:17,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415423910] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 17:27:17,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670477630] [2024-11-22 17:27:17,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:27:17,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:27:17,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:27:17,559 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 17:27:17,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 17:27:18,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:27:18,153 INFO L255 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-22 17:27:18,155 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 17:27:18,170 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:27:18,170 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 17:27:18,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670477630] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:27:18,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 17:27:18,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2024-11-22 17:27:18,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032327576] [2024-11-22 17:27:18,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:27:18,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 17:27:18,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:27:18,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 17:27:18,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 17:27:18,172 INFO L87 Difference]: Start difference. First operand 679 states and 959 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 17:27:18,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:27:18,214 INFO L93 Difference]: Finished difference Result 1251 states and 1782 transitions. [2024-11-22 17:27:18,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 17:27:18,215 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 105 [2024-11-22 17:27:18,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:27:18,218 INFO L225 Difference]: With dead ends: 1251 [2024-11-22 17:27:18,218 INFO L226 Difference]: Without dead ends: 682 [2024-11-22 17:27:18,219 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 17:27:18,219 INFO L432 NwaCegarLoop]: 548 mSDtfsCounter, 0 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1640 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 17:27:18,220 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1640 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 17:27:18,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2024-11-22 17:27:18,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 682. [2024-11-22 17:27:18,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 655 states have (on average 1.4045801526717556) internal successors, (920), 672 states have internal predecessors, (920), 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) [2024-11-22 17:27:18,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 963 transitions. [2024-11-22 17:27:18,238 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 963 transitions. Word has length 105 [2024-11-22 17:27:18,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:27:18,238 INFO L471 AbstractCegarLoop]: Abstraction has 682 states and 963 transitions. [2024-11-22 17:27:18,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 17:27:18,239 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 963 transitions. [2024-11-22 17:27:18,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-22 17:27:18,240 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:27:18,240 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:27:18,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-22 17:27:18,440 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,SelfDestructingSolverStorable11 [2024-11-22 17:27:18,441 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:27:18,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:27:18,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1666553801, now seen corresponding path program 1 times [2024-11-22 17:27:18,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:27:18,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964988386] [2024-11-22 17:27:18,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:27:18,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:27:18,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:27:18,946 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 17:27:18,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:27:18,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964988386] [2024-11-22 17:27:18,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964988386] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 17:27:18,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305551012] [2024-11-22 17:27:18,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:27:18,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:27:18,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:27:18,950 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 17:27:18,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 17:27:19,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:27:19,497 INFO L255 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-22 17:27:19,499 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 17:27:19,553 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 17:27:19,554 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 17:27:19,646 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 17:27:19,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305551012] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 17:27:19,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 17:27:19,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-22 17:27:19,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315869704] [2024-11-22 17:27:19,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 17:27:19,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 17:27:19,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:27:19,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 17:27:19,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-22 17:27:19,649 INFO L87 Difference]: Start difference. First operand 682 states and 963 transitions. Second operand has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 17:27:19,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:27:19,827 INFO L93 Difference]: Finished difference Result 1267 states and 1805 transitions. [2024-11-22 17:27:19,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 17:27:19,827 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 107 [2024-11-22 17:27:19,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:27:19,830 INFO L225 Difference]: With dead ends: 1267 [2024-11-22 17:27:19,831 INFO L226 Difference]: Without dead ends: 693 [2024-11-22 17:27:19,832 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2024-11-22 17:27:19,833 INFO L432 NwaCegarLoop]: 548 mSDtfsCounter, 10 mSDsluCounter, 2175 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2723 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 17:27:19,833 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2723 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 17:27:19,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2024-11-22 17:27:19,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 691. [2024-11-22 17:27:19,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 663 states have (on average 1.405731523378582) internal successors, (932), 680 states have internal predecessors, (932), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-11-22 17:27:19,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 975 transitions. [2024-11-22 17:27:19,855 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 975 transitions. Word has length 107 [2024-11-22 17:27:19,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:27:19,855 INFO L471 AbstractCegarLoop]: Abstraction has 691 states and 975 transitions. [2024-11-22 17:27:19,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 17:27:19,855 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 975 transitions. [2024-11-22 17:27:19,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-22 17:27:19,857 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:27:19,857 INFO L215 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:27:19,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-22 17:27:20,057 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 [2024-11-22 17:27:20,058 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:27:20,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:27:20,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1666405397, now seen corresponding path program 2 times [2024-11-22 17:27:20,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:27:20,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320079617] [2024-11-22 17:27:20,059 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 17:27:20,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:27:20,151 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 17:27:20,151 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 17:27:20,507 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-22 17:27:20,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:27:20,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320079617] [2024-11-22 17:27:20,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320079617] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:27:20,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:27:20,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 17:27:20,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815123356] [2024-11-22 17:27:20,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:27:20,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 17:27:20,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:27:20,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 17:27:20,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-22 17:27:20,509 INFO L87 Difference]: Start difference. First operand 691 states and 975 transitions. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 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) [2024-11-22 17:27:21,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:27:21,118 INFO L93 Difference]: Finished difference Result 1333 states and 1895 transitions. [2024-11-22 17:27:21,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 17:27:21,119 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 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 111 [2024-11-22 17:27:21,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:27:21,123 INFO L225 Difference]: With dead ends: 1333 [2024-11-22 17:27:21,123 INFO L226 Difference]: Without dead ends: 725 [2024-11-22 17:27:21,124 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-22 17:27:21,125 INFO L432 NwaCegarLoop]: 523 mSDtfsCounter, 17 mSDsluCounter, 3787 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4310 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 17:27:21,125 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4310 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 17:27:21,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2024-11-22 17:27:21,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 701. [2024-11-22 17:27:21,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 673 states have (on average 1.4026745913818721) internal successors, (944), 690 states have internal predecessors, (944), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-11-22 17:27:21,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 987 transitions. [2024-11-22 17:27:21,146 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 987 transitions. Word has length 111 [2024-11-22 17:27:21,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:27:21,147 INFO L471 AbstractCegarLoop]: Abstraction has 701 states and 987 transitions. [2024-11-22 17:27:21,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 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) [2024-11-22 17:27:21,147 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 987 transitions. [2024-11-22 17:27:21,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-22 17:27:21,148 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:27:21,148 INFO L215 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:27:21,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 17:27:21,148 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:27:21,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:27:21,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1013800050, now seen corresponding path program 1 times [2024-11-22 17:27:21,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:27:21,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025725977] [2024-11-22 17:27:21,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:27:21,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:27:21,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:27:21,579 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-22 17:27:21,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:27:21,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025725977] [2024-11-22 17:27:21,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025725977] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 17:27:21,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744148474] [2024-11-22 17:27:21,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:27:21,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:27:21,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:27:21,582 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 17:27:21,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 17:27:22,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:27:22,120 INFO L255 TraceCheckSpWp]: Trace formula consists of 674 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-22 17:27:22,123 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 17:27:22,331 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-22 17:27:22,331 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 17:27:22,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744148474] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:27:22,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 17:27:22,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-11-22 17:27:22,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714039184] [2024-11-22 17:27:22,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:27:22,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 17:27:22,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:27:22,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 17:27:22,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-22 17:27:22,333 INFO L87 Difference]: Start difference. First operand 701 states and 987 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 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) [2024-11-22 17:27:22,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:27:22,831 INFO L93 Difference]: Finished difference Result 1334 states and 1897 transitions. [2024-11-22 17:27:22,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 17:27:22,832 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 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 111 [2024-11-22 17:27:22,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:27:22,838 INFO L225 Difference]: With dead ends: 1334 [2024-11-22 17:27:22,838 INFO L226 Difference]: Without dead ends: 711 [2024-11-22 17:27:22,839 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-22 17:27:22,840 INFO L432 NwaCegarLoop]: 537 mSDtfsCounter, 10 mSDsluCounter, 2336 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2873 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 17:27:22,840 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2873 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 17:27:22,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2024-11-22 17:27:22,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 701. [2024-11-22 17:27:22,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 673 states have (on average 1.4026745913818721) internal successors, (944), 690 states have internal predecessors, (944), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-11-22 17:27:22,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 987 transitions. [2024-11-22 17:27:22,865 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 987 transitions. Word has length 111 [2024-11-22 17:27:22,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:27:22,866 INFO L471 AbstractCegarLoop]: Abstraction has 701 states and 987 transitions. [2024-11-22 17:27:22,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 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) [2024-11-22 17:27:22,866 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 987 transitions. [2024-11-22 17:27:22,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-22 17:27:22,867 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:27:22,867 INFO L215 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:27:22,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-22 17:27:23,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:27:23,072 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:27:23,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:27:23,074 INFO L85 PathProgramCache]: Analyzing trace with hash -42628906, now seen corresponding path program 1 times [2024-11-22 17:27:23,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:27:23,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960755025] [2024-11-22 17:27:23,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:27:23,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:27:23,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:27:23,539 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-22 17:27:23,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:27:23,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960755025] [2024-11-22 17:27:23,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960755025] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 17:27:23,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729293991] [2024-11-22 17:27:23,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:27:23,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:27:23,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:27:23,542 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 17:27:23,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 17:27:24,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:27:24,051 INFO L255 TraceCheckSpWp]: Trace formula consists of 675 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-22 17:27:24,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 17:27:24,145 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-22 17:27:24,146 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 17:27:24,262 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-22 17:27:24,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729293991] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 17:27:24,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 17:27:24,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 13 [2024-11-22 17:27:24,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261404264] [2024-11-22 17:27:24,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 17:27:24,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 17:27:24,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:27:24,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 17:27:24,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-22 17:27:24,264 INFO L87 Difference]: Start difference. First operand 701 states and 987 transitions. Second operand has 13 states, 13 states have (on average 9.0) internal successors, (117), 13 states have internal predecessors, (117), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-22 17:27:24,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:27:24,463 INFO L93 Difference]: Finished difference Result 1297 states and 1840 transitions. [2024-11-22 17:27:24,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 17:27:24,464 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.0) internal successors, (117), 13 states have internal predecessors, (117), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 112 [2024-11-22 17:27:24,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:27:24,467 INFO L225 Difference]: With dead ends: 1297 [2024-11-22 17:27:24,468 INFO L226 Difference]: Without dead ends: 707 [2024-11-22 17:27:24,469 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=195, Unknown=0, NotChecked=0, Total=306 [2024-11-22 17:27:24,469 INFO L432 NwaCegarLoop]: 536 mSDtfsCounter, 29 mSDsluCounter, 2125 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 2661 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 17:27:24,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 2661 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 17:27:24,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2024-11-22 17:27:24,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 705. [2024-11-22 17:27:24,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 677 states have (on average 1.4002954209748892) internal successors, (948), 694 states have internal predecessors, (948), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-11-22 17:27:24,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 991 transitions. [2024-11-22 17:27:24,492 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 991 transitions. Word has length 112 [2024-11-22 17:27:24,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:27:24,493 INFO L471 AbstractCegarLoop]: Abstraction has 705 states and 991 transitions. [2024-11-22 17:27:24,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.0) internal successors, (117), 13 states have internal predecessors, (117), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-22 17:27:24,493 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 991 transitions. [2024-11-22 17:27:24,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-22 17:27:24,494 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:27:24,494 INFO L215 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:27:24,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-22 17:27:24,698 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,SelfDestructingSolverStorable15 [2024-11-22 17:27:24,698 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:27:24,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:27:24,699 INFO L85 PathProgramCache]: Analyzing trace with hash 423453270, now seen corresponding path program 2 times [2024-11-22 17:27:24,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:27:24,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232950894] [2024-11-22 17:27:24,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 17:27:24,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:27:24,789 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 17:27:24,790 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 17:27:25,249 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-22 17:27:25,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:27:25,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232950894] [2024-11-22 17:27:25,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232950894] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:27:25,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:27:25,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 17:27:25,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254919641] [2024-11-22 17:27:25,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:27:25,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 17:27:25,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:27:25,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 17:27:25,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-22 17:27:25,252 INFO L87 Difference]: Start difference. First operand 705 states and 991 transitions. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 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) [2024-11-22 17:27:25,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:27:25,847 INFO L93 Difference]: Finished difference Result 1346 states and 1909 transitions. [2024-11-22 17:27:25,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 17:27:25,848 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 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 116 [2024-11-22 17:27:25,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:27:25,851 INFO L225 Difference]: With dead ends: 1346 [2024-11-22 17:27:25,851 INFO L226 Difference]: Without dead ends: 729 [2024-11-22 17:27:25,853 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-22 17:27:25,853 INFO L432 NwaCegarLoop]: 536 mSDtfsCounter, 13 mSDsluCounter, 3315 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 3851 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 17:27:25,853 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 3851 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 17:27:25,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2024-11-22 17:27:25,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 713. [2024-11-22 17:27:25,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 685 states have (on average 1.3985401459854014) internal successors, (958), 702 states have internal predecessors, (958), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-11-22 17:27:25,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1001 transitions. [2024-11-22 17:27:25,875 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1001 transitions. Word has length 116 [2024-11-22 17:27:25,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:27:25,875 INFO L471 AbstractCegarLoop]: Abstraction has 713 states and 1001 transitions. [2024-11-22 17:27:25,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 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) [2024-11-22 17:27:25,875 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1001 transitions. [2024-11-22 17:27:25,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-22 17:27:25,876 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:27:25,876 INFO L215 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:27:25,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-22 17:27:25,877 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:27:25,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:27:25,877 INFO L85 PathProgramCache]: Analyzing trace with hash 243848336, now seen corresponding path program 1 times [2024-11-22 17:27:25,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:27:25,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344468639] [2024-11-22 17:27:25,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:27:25,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:27:26,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:27:26,649 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-22 17:27:26,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:27:26,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344468639] [2024-11-22 17:27:26,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344468639] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 17:27:26,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389385111] [2024-11-22 17:27:26,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:27:26,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:27:26,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:27:26,652 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 17:27:26,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 17:27:27,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:27:27,116 INFO L255 TraceCheckSpWp]: Trace formula consists of 735 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-22 17:27:27,119 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 17:27:27,553 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-22 17:27:27,553 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 17:27:27,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389385111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:27:27,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 17:27:27,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2024-11-22 17:27:27,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383313193] [2024-11-22 17:27:27,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:27:27,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 17:27:27,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:27:27,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 17:27:27,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2024-11-22 17:27:27,555 INFO L87 Difference]: Start difference. First operand 713 states and 1001 transitions. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 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) [2024-11-22 17:27:28,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:27:28,190 INFO L93 Difference]: Finished difference Result 1342 states and 1901 transitions. [2024-11-22 17:27:28,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 17:27:28,191 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 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 116 [2024-11-22 17:27:28,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:27:28,194 INFO L225 Difference]: With dead ends: 1342 [2024-11-22 17:27:28,194 INFO L226 Difference]: Without dead ends: 709 [2024-11-22 17:27:28,195 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2024-11-22 17:27:28,195 INFO L432 NwaCegarLoop]: 536 mSDtfsCounter, 11 mSDsluCounter, 3311 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 3847 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 17:27:28,196 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 3847 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 17:27:28,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2024-11-22 17:27:28,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 709. [2024-11-22 17:27:28,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 681 states have (on average 1.3979441997063142) internal successors, (952), 698 states have internal predecessors, (952), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-11-22 17:27:28,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 995 transitions. [2024-11-22 17:27:28,213 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 995 transitions. Word has length 116 [2024-11-22 17:27:28,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:27:28,213 INFO L471 AbstractCegarLoop]: Abstraction has 709 states and 995 transitions. [2024-11-22 17:27:28,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 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) [2024-11-22 17:27:28,214 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 995 transitions. [2024-11-22 17:27:28,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-22 17:27:28,214 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:27:28,215 INFO L215 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:27:28,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-22 17:27:28,415 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,SelfDestructingSolverStorable17 [2024-11-22 17:27:28,417 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:27:28,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:27:28,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1170430194, now seen corresponding path program 1 times [2024-11-22 17:27:28,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:27:28,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336930517] [2024-11-22 17:27:28,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:27:28,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:27:28,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:27:29,009 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-22 17:27:29,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:27:29,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336930517] [2024-11-22 17:27:29,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336930517] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 17:27:29,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956688121] [2024-11-22 17:27:29,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:27:29,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:27:29,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:27:29,012 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 17:27:29,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-22 17:27:29,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:27:29,588 INFO L255 TraceCheckSpWp]: Trace formula consists of 732 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-22 17:27:29,591 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 17:27:29,695 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 2 proven. 61 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-22 17:27:29,696 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 17:27:29,896 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 37 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-22 17:27:29,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956688121] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 17:27:29,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 17:27:29,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 23 [2024-11-22 17:27:29,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833956740] [2024-11-22 17:27:29,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 17:27:29,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 17:27:29,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:27:29,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 17:27:29,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2024-11-22 17:27:29,899 INFO L87 Difference]: Start difference. First operand 709 states and 995 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 17:27:30,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:27:30,363 INFO L93 Difference]: Finished difference Result 1320 states and 1871 transitions. [2024-11-22 17:27:30,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-22 17:27:30,363 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 116 [2024-11-22 17:27:30,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:27:30,367 INFO L225 Difference]: With dead ends: 1320 [2024-11-22 17:27:30,367 INFO L226 Difference]: Without dead ends: 726 [2024-11-22 17:27:30,368 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=345, Invalid=845, Unknown=0, NotChecked=0, Total=1190 [2024-11-22 17:27:30,369 INFO L432 NwaCegarLoop]: 549 mSDtfsCounter, 10 mSDsluCounter, 3842 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 4391 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 17:27:30,369 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 4391 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 17:27:30,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2024-11-22 17:27:30,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 718. [2024-11-22 17:27:30,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 690 states have (on average 1.4043478260869566) internal successors, (969), 707 states have internal predecessors, (969), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-11-22 17:27:30,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 1012 transitions. [2024-11-22 17:27:30,389 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 1012 transitions. Word has length 116 [2024-11-22 17:27:30,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:27:30,389 INFO L471 AbstractCegarLoop]: Abstraction has 718 states and 1012 transitions. [2024-11-22 17:27:30,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 17:27:30,390 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1012 transitions. [2024-11-22 17:27:30,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-22 17:27:30,390 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:27:30,391 INFO L215 NwaCegarLoop]: trace histogram [19, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:27:30,405 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-22 17:27:30,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:27:30,591 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:27:30,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:27:30,592 INFO L85 PathProgramCache]: Analyzing trace with hash 2129751136, now seen corresponding path program 2 times [2024-11-22 17:27:30,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:27:30,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73173721] [2024-11-22 17:27:30,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 17:27:30,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:27:30,680 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 17:27:30,680 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 17:27:31,219 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2024-11-22 17:27:31,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:27:31,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73173721] [2024-11-22 17:27:31,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73173721] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:27:31,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:27:31,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 17:27:31,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944928931] [2024-11-22 17:27:31,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:27:31,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 17:27:31,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:27:31,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 17:27:31,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-22 17:27:31,222 INFO L87 Difference]: Start difference. First operand 718 states and 1012 transitions. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 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) [2024-11-22 17:27:35,510 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 [] [2024-11-22 17:27:35,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:27:35,985 INFO L93 Difference]: Finished difference Result 1369 states and 1943 transitions. [2024-11-22 17:27:35,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 17:27:35,986 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 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 125 [2024-11-22 17:27:35,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:27:35,989 INFO L225 Difference]: With dead ends: 1369 [2024-11-22 17:27:35,989 INFO L226 Difference]: Without dead ends: 736 [2024-11-22 17:27:35,990 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-11-22 17:27:35,991 INFO L432 NwaCegarLoop]: 543 mSDtfsCounter, 42 mSDsluCounter, 3283 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 3826 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-22 17:27:35,991 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 3826 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 644 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2024-11-22 17:27:35,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2024-11-22 17:27:36,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 722. [2024-11-22 17:27:36,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 694 states have (on average 1.4020172910662825) internal successors, (973), 711 states have internal predecessors, (973), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-11-22 17:27:36,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 1016 transitions. [2024-11-22 17:27:36,025 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 1016 transitions. Word has length 125 [2024-11-22 17:27:36,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:27:36,025 INFO L471 AbstractCegarLoop]: Abstraction has 722 states and 1016 transitions. [2024-11-22 17:27:36,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 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) [2024-11-22 17:27:36,025 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 1016 transitions. [2024-11-22 17:27:36,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-22 17:27:36,027 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:27:36,027 INFO L215 NwaCegarLoop]: trace histogram [19, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:27:36,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-22 17:27:36,028 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:27:36,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:27:36,028 INFO L85 PathProgramCache]: Analyzing trace with hash 557170621, now seen corresponding path program 1 times [2024-11-22 17:27:36,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:27:36,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825605583] [2024-11-22 17:27:36,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:27:36,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:27:36,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:27:36,740 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-22 17:27:36,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:27:36,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825605583] [2024-11-22 17:27:36,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825605583] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 17:27:36,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350510291] [2024-11-22 17:27:36,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:27:36,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:27:36,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:27:36,741 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 17:27:36,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-22 17:27:37,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:27:37,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 870 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-22 17:27:37,966 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 17:27:38,051 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 107 proven. 28 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-22 17:27:38,051 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 17:27:38,291 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-22 17:27:38,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350510291] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 17:27:38,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 17:27:38,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2024-11-22 17:27:38,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307660713] [2024-11-22 17:27:38,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 17:27:38,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-22 17:27:38,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:27:38,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-22 17:27:38,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2024-11-22 17:27:38,294 INFO L87 Difference]: Start difference. First operand 722 states and 1016 transitions. Second operand has 22 states, 22 states have (on average 5.681818181818182) internal successors, (125), 22 states have internal predecessors, (125), 2 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 17:27:39,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:27:39,338 INFO L93 Difference]: Finished difference Result 1340 states and 1904 transitions. [2024-11-22 17:27:39,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-22 17:27:39,339 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.681818181818182) internal successors, (125), 22 states have internal predecessors, (125), 2 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 125 [2024-11-22 17:27:39,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:27:39,343 INFO L225 Difference]: With dead ends: 1340 [2024-11-22 17:27:39,343 INFO L226 Difference]: Without dead ends: 731 [2024-11-22 17:27:39,346 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=460, Invalid=872, Unknown=0, NotChecked=0, Total=1332 [2024-11-22 17:27:39,346 INFO L432 NwaCegarLoop]: 549 mSDtfsCounter, 10 mSDsluCounter, 4362 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 4911 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 17:27:39,346 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 4911 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 17:27:39,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2024-11-22 17:27:39,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 731. [2024-11-22 17:27:39,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 703 states have (on average 1.3883357041251778) internal successors, (976), 720 states have internal predecessors, (976), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-11-22 17:27:39,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 1019 transitions. [2024-11-22 17:27:39,367 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 1019 transitions. Word has length 125 [2024-11-22 17:27:39,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:27:39,367 INFO L471 AbstractCegarLoop]: Abstraction has 731 states and 1019 transitions. [2024-11-22 17:27:39,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.681818181818182) internal successors, (125), 22 states have internal predecessors, (125), 2 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 17:27:39,367 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 1019 transitions. [2024-11-22 17:27:39,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-22 17:27:39,368 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:27:39,368 INFO L215 NwaCegarLoop]: trace histogram [28, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:27:39,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-22 17:27:39,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-22 17:27:39,569 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:27:39,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:27:39,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1142139125, now seen corresponding path program 2 times [2024-11-22 17:27:39,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:27:39,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592234945] [2024-11-22 17:27:39,570 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 17:27:39,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:27:39,654 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 17:27:39,654 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 17:27:39,926 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 438 trivial. 0 not checked. [2024-11-22 17:27:39,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:27:39,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592234945] [2024-11-22 17:27:39,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592234945] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:27:39,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:27:39,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 17:27:39,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491869516] [2024-11-22 17:27:39,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:27:39,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 17:27:39,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:27:39,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 17:27:39,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-22 17:27:39,929 INFO L87 Difference]: Start difference. First operand 731 states and 1019 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 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) [2024-11-22 17:27:40,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:27:40,262 INFO L93 Difference]: Finished difference Result 1407 states and 1977 transitions. [2024-11-22 17:27:40,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 17:27:40,263 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 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 134 [2024-11-22 17:27:40,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:27:40,266 INFO L225 Difference]: With dead ends: 1407 [2024-11-22 17:27:40,266 INFO L226 Difference]: Without dead ends: 763 [2024-11-22 17:27:40,267 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-22 17:27:40,267 INFO L432 NwaCegarLoop]: 533 mSDtfsCounter, 23 mSDsluCounter, 3356 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3889 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 17:27:40,267 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3889 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 17:27:40,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2024-11-22 17:27:40,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 743. [2024-11-22 17:27:40,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 715 states have (on average 1.3846153846153846) internal successors, (990), 732 states have internal predecessors, (990), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-11-22 17:27:40,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1033 transitions. [2024-11-22 17:27:40,288 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1033 transitions. Word has length 134 [2024-11-22 17:27:40,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:27:40,289 INFO L471 AbstractCegarLoop]: Abstraction has 743 states and 1033 transitions. [2024-11-22 17:27:40,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 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) [2024-11-22 17:27:40,289 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1033 transitions. [2024-11-22 17:27:40,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-22 17:27:40,290 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:27:40,290 INFO L215 NwaCegarLoop]: trace histogram [28, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:27:40,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-22 17:27:40,290 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:27:40,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:27:40,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1193584350, now seen corresponding path program 1 times [2024-11-22 17:27:40,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:27:40,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912909183] [2024-11-22 17:27:40,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:27:40,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:27:40,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:27:41,499 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 359 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-22 17:27:41,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:27:41,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912909183] [2024-11-22 17:27:41,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912909183] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 17:27:41,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659325214] [2024-11-22 17:27:41,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:27:41,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:27:41,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:27:41,502 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 17:27:41,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process