./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-1.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 6fd297418200393a9bb890e84311a80b6eacd7d5d7cdd65efb1397f8b8ab870f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 14:40:06,508 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 14:40:06,572 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 14:40:06,585 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 14:40:06,585 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 14:40:06,599 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 14:40:06,599 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 14:40:06,600 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 14:40:06,600 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 14:40:06,600 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 14:40:06,601 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 14:40:06,601 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 14:40:06,601 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 14:40:06,602 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 14:40:06,602 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 14:40:06,602 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 14:40:06,603 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 14:40:06,603 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 14:40:06,603 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 14:40:06,603 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 14:40:06,604 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 14:40:06,604 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 14:40:06,604 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 14:40:06,605 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 14:40:06,605 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 14:40:06,605 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 14:40:06,605 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 14:40:06,606 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 14:40:06,606 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 14:40:06,606 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 14:40:06,606 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 14:40:06,606 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 14:40:06,607 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 14:40:06,607 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 14:40:06,607 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 14:40:06,607 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 14:40:06,607 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 14:40:06,608 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 14:40:06,608 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 14:40:06,608 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 14:40:06,608 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 14:40:06,609 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 14:40:06,609 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6fd297418200393a9bb890e84311a80b6eacd7d5d7cdd65efb1397f8b8ab870f [2024-10-24 14:40:06,803 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 14:40:06,826 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 14:40:06,829 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 14:40:06,830 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 14:40:06,831 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 14:40:06,832 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-1.i [2024-10-24 14:40:08,136 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 14:40:08,389 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 14:40:08,389 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-1.i [2024-10-24 14:40:08,407 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cb758e07/a57705959bac4197b1786bf8e620108c/FLAG14925349b [2024-10-24 14:40:08,420 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cb758e07/a57705959bac4197b1786bf8e620108c [2024-10-24 14:40:08,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 14:40:08,423 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 14:40:08,425 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 14:40:08,425 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 14:40:08,429 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 14:40:08,430 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:40:08" (1/1) ... [2024-10-24 14:40:08,432 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73ac31ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:40:08, skipping insertion in model container [2024-10-24 14:40:08,432 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:40:08" (1/1) ... [2024-10-24 14:40:08,476 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 14:40:08,842 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-1.i[33519,33532] [2024-10-24 14:40:08,972 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 14:40:09,004 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 14:40:09,035 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-1.i[33519,33532] [2024-10-24 14:40:09,095 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 14:40:09,129 INFO L204 MainTranslator]: Completed translation [2024-10-24 14:40:09,130 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:40:09 WrapperNode [2024-10-24 14:40:09,130 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 14:40:09,131 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 14:40:09,132 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 14:40:09,132 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 14:40:09,138 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:40:09" (1/1) ... [2024-10-24 14:40:09,168 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:40:09" (1/1) ... [2024-10-24 14:40:09,235 INFO L138 Inliner]: procedures = 177, calls = 273, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1431 [2024-10-24 14:40:09,236 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 14:40:09,236 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 14:40:09,237 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 14:40:09,237 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 14:40:09,247 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:40:09" (1/1) ... [2024-10-24 14:40:09,248 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:40:09" (1/1) ... [2024-10-24 14:40:09,260 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:40:09" (1/1) ... [2024-10-24 14:40:09,331 INFO L175 MemorySlicer]: Split 254 memory accesses to 3 slices as follows [2, 218, 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]. [2024-10-24 14:40:09,331 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:40:09" (1/1) ... [2024-10-24 14:40:09,332 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:40:09" (1/1) ... [2024-10-24 14:40:09,364 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:40:09" (1/1) ... [2024-10-24 14:40:09,377 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:40:09" (1/1) ... [2024-10-24 14:40:09,382 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:40:09" (1/1) ... [2024-10-24 14:40:09,387 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:40:09" (1/1) ... [2024-10-24 14:40:09,395 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 14:40:09,396 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 14:40:09,396 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 14:40:09,396 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 14:40:09,397 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:40:09" (1/1) ... [2024-10-24 14:40:09,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 14:40:09,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:40:09,432 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 14:40:09,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 14:40:09,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 14:40:09,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 14:40:09,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-24 14:40:09,476 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-24 14:40:09,476 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-24 14:40:09,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 14:40:09,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 14:40:09,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-24 14:40:09,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-10-24 14:40:09,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-10-24 14:40:09,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-10-24 14:40:09,476 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-10-24 14:40:09,476 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-10-24 14:40:09,477 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-10-24 14:40:09,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 14:40:09,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 14:40:09,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-24 14:40:09,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-24 14:40:09,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-24 14:40:09,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-24 14:40:09,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-24 14:40:09,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-24 14:40:09,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-24 14:40:09,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 14:40:09,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 14:40:09,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 14:40:09,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 14:40:09,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 14:40:09,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 14:40:09,654 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 14:40:09,657 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 14:40:10,845 INFO L? ?]: Removed 313 outVars from TransFormulas that were not future-live. [2024-10-24 14:40:10,846 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 14:40:10,880 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 14:40:10,880 INFO L314 CfgBuilder]: Removed 63 assume(true) statements. [2024-10-24 14:40:10,881 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:40:10 BoogieIcfgContainer [2024-10-24 14:40:10,881 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 14:40:10,883 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 14:40:10,883 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 14:40:10,886 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 14:40:10,886 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:40:08" (1/3) ... [2024-10-24 14:40:10,887 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b49d71f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:40:10, skipping insertion in model container [2024-10-24 14:40:10,887 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:40:09" (2/3) ... [2024-10-24 14:40:10,891 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b49d71f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:40:10, skipping insertion in model container [2024-10-24 14:40:10,892 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:40:10" (3/3) ... [2024-10-24 14:40:10,893 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_nondet_test3-1.i [2024-10-24 14:40:10,909 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 14:40:10,909 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 14:40:10,989 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 14:40:10,997 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;@591701a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 14:40:10,998 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 14:40:11,004 INFO L276 IsEmpty]: Start isEmpty. Operand has 398 states, 389 states have (on average 1.6272493573264781) internal successors, (633), 391 states have internal predecessors, (633), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-24 14:40:11,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-24 14:40:11,011 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:40:11,012 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:40:11,013 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:40:11,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:40:11,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1971132038, now seen corresponding path program 1 times [2024-10-24 14:40:11,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:40:11,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163481428] [2024-10-24 14:40:11,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:40:11,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:40:11,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:11,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:40:11,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:40:11,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163481428] [2024-10-24 14:40:11,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163481428] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:40:11,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:40:11,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 14:40:11,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831864251] [2024-10-24 14:40:11,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:40:11,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 14:40:11,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:40:11,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 14:40:11,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 14:40:11,316 INFO L87 Difference]: Start difference. First operand has 398 states, 389 states have (on average 1.6272493573264781) internal successors, (633), 391 states have internal predecessors, (633), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:40:11,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:40:11,380 INFO L93 Difference]: Finished difference Result 794 states and 1285 transitions. [2024-10-24 14:40:11,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 14:40:11,382 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-10-24 14:40:11,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:40:11,395 INFO L225 Difference]: With dead ends: 794 [2024-10-24 14:40:11,396 INFO L226 Difference]: Without dead ends: 395 [2024-10-24 14:40:11,402 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 14:40:11,404 INFO L432 NwaCegarLoop]: 571 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 14:40:11,405 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 571 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 14:40:11,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2024-10-24 14:40:11,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2024-10-24 14:40:11,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 387 states have (on average 1.449612403100775) internal successors, (561), 388 states have internal predecessors, (561), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-24 14:40:11,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 571 transitions. [2024-10-24 14:40:11,468 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 571 transitions. Word has length 11 [2024-10-24 14:40:11,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:40:11,469 INFO L471 AbstractCegarLoop]: Abstraction has 395 states and 571 transitions. [2024-10-24 14:40:11,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:40:11,469 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 571 transitions. [2024-10-24 14:40:11,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-24 14:40:11,470 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:40:11,470 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:40:11,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 14:40:11,471 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:40:11,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:40:11,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1788751725, now seen corresponding path program 1 times [2024-10-24 14:40:11,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:40:11,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239448811] [2024-10-24 14:40:11,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:40:11,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:40:11,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:11,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:40:11,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:40:11,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239448811] [2024-10-24 14:40:11,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239448811] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:40:11,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:40:11,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 14:40:11,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868977683] [2024-10-24 14:40:11,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:40:11,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:40:11,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:40:11,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:40:11,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:40:11,697 INFO L87 Difference]: Start difference. First operand 395 states and 571 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:40:11,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:40:11,968 INFO L93 Difference]: Finished difference Result 1084 states and 1584 transitions. [2024-10-24 14:40:11,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 14:40:11,969 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-10-24 14:40:11,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:40:11,972 INFO L225 Difference]: With dead ends: 1084 [2024-10-24 14:40:11,972 INFO L226 Difference]: Without dead ends: 689 [2024-10-24 14:40:11,973 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:40:11,974 INFO L432 NwaCegarLoop]: 557 mSDtfsCounter, 430 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 14:40:11,974 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 1627 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 14:40:11,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2024-10-24 14:40:12,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 688. [2024-10-24 14:40:12,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 679 states have (on average 1.4683357879234167) internal successors, (997), 681 states have internal predecessors, (997), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-24 14:40:12,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 1009 transitions. [2024-10-24 14:40:12,015 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 1009 transitions. Word has length 13 [2024-10-24 14:40:12,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:40:12,015 INFO L471 AbstractCegarLoop]: Abstraction has 688 states and 1009 transitions. [2024-10-24 14:40:12,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:40:12,016 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 1009 transitions. [2024-10-24 14:40:12,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-24 14:40:12,022 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:40:12,022 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] [2024-10-24 14:40:12,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 14:40:12,023 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:40:12,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:40:12,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1712818238, now seen corresponding path program 1 times [2024-10-24 14:40:12,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:40:12,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088949792] [2024-10-24 14:40:12,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:40:12,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:40:12,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:12,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:40:12,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:40:12,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088949792] [2024-10-24 14:40:12,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088949792] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:40:12,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:40:12,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 14:40:12,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917128631] [2024-10-24 14:40:12,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:40:12,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:40:12,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:40:12,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:40:12,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:40:12,226 INFO L87 Difference]: Start difference. First operand 688 states and 1009 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:40:12,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:40:12,330 INFO L93 Difference]: Finished difference Result 959 states and 1398 transitions. [2024-10-24 14:40:12,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 14:40:12,335 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-10-24 14:40:12,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:40:12,337 INFO L225 Difference]: With dead ends: 959 [2024-10-24 14:40:12,337 INFO L226 Difference]: Without dead ends: 604 [2024-10-24 14:40:12,338 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 14:40:12,344 INFO L432 NwaCegarLoop]: 466 mSDtfsCounter, 30 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1381 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 14:40:12,344 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1381 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 14:40:12,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2024-10-24 14:40:12,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 604. [2024-10-24 14:40:12,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 595 states have (on average 1.4168067226890757) internal successors, (843), 597 states have internal predecessors, (843), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-24 14:40:12,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 855 transitions. [2024-10-24 14:40:12,379 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 855 transitions. Word has length 67 [2024-10-24 14:40:12,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:40:12,380 INFO L471 AbstractCegarLoop]: Abstraction has 604 states and 855 transitions. [2024-10-24 14:40:12,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:40:12,380 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 855 transitions. [2024-10-24 14:40:12,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-24 14:40:12,388 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:40:12,389 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] [2024-10-24 14:40:12,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 14:40:12,389 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:40:12,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:40:12,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1157922890, now seen corresponding path program 1 times [2024-10-24 14:40:12,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:40:12,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241893437] [2024-10-24 14:40:12,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:40:12,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:40:12,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:12,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:40:12,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:40:12,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241893437] [2024-10-24 14:40:12,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241893437] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:40:12,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:40:12,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 14:40:12,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081960342] [2024-10-24 14:40:12,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:40:12,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 14:40:12,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:40:12,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 14:40:12,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:40:12,754 INFO L87 Difference]: Start difference. First operand 604 states and 855 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:40:12,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:40:12,872 INFO L93 Difference]: Finished difference Result 1117 states and 1550 transitions. [2024-10-24 14:40:12,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 14:40:12,872 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-10-24 14:40:12,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:40:12,876 INFO L225 Difference]: With dead ends: 1117 [2024-10-24 14:40:12,876 INFO L226 Difference]: Without dead ends: 843 [2024-10-24 14:40:12,878 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-24 14:40:12,879 INFO L432 NwaCegarLoop]: 516 mSDtfsCounter, 462 mSDsluCounter, 1498 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 2014 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 14:40:12,879 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 2014 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 14:40:12,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2024-10-24 14:40:12,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 603. [2024-10-24 14:40:12,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 594 states have (on average 1.4158249158249159) internal successors, (841), 596 states have internal predecessors, (841), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-24 14:40:12,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 853 transitions. [2024-10-24 14:40:12,898 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 853 transitions. Word has length 67 [2024-10-24 14:40:12,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:40:12,898 INFO L471 AbstractCegarLoop]: Abstraction has 603 states and 853 transitions. [2024-10-24 14:40:12,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:40:12,898 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 853 transitions. [2024-10-24 14:40:12,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-10-24 14:40:12,901 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:40:12,901 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:40:12,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 14:40:12,901 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:40:12,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:40:12,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1330477125, now seen corresponding path program 1 times [2024-10-24 14:40:12,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:40:12,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256859429] [2024-10-24 14:40:12,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:40:12,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:40:12,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:13,127 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:40:13,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:13,134 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 14:40:13,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:13,139 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:40:13,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:40:13,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256859429] [2024-10-24 14:40:13,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256859429] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:40:13,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:40:13,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 14:40:13,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045079492] [2024-10-24 14:40:13,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:40:13,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 14:40:13,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:40:13,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 14:40:13,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 14:40:13,145 INFO L87 Difference]: Start difference. First operand 603 states and 853 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:40:13,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:40:13,393 INFO L93 Difference]: Finished difference Result 1154 states and 1628 transitions. [2024-10-24 14:40:13,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 14:40:13,394 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 102 [2024-10-24 14:40:13,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:40:13,397 INFO L225 Difference]: With dead ends: 1154 [2024-10-24 14:40:13,397 INFO L226 Difference]: Without dead ends: 611 [2024-10-24 14:40:13,398 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-24 14:40:13,399 INFO L432 NwaCegarLoop]: 451 mSDtfsCounter, 112 mSDsluCounter, 1182 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 1633 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 14:40:13,399 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 1633 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 14:40:13,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2024-10-24 14:40:13,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 603. [2024-10-24 14:40:13,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 594 states have (on average 1.3922558922558923) internal successors, (827), 596 states have internal predecessors, (827), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-24 14:40:13,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 839 transitions. [2024-10-24 14:40:13,414 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 839 transitions. Word has length 102 [2024-10-24 14:40:13,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:40:13,414 INFO L471 AbstractCegarLoop]: Abstraction has 603 states and 839 transitions. [2024-10-24 14:40:13,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:40:13,414 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 839 transitions. [2024-10-24 14:40:13,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-10-24 14:40:13,415 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:40:13,416 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:40:13,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 14:40:13,416 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:40:13,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:40:13,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1459856815, now seen corresponding path program 1 times [2024-10-24 14:40:13,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:40:13,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479802481] [2024-10-24 14:40:13,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:40:13,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:40:13,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:13,564 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:40:13,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:13,568 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 14:40:13,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:13,571 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:40:13,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:40:13,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479802481] [2024-10-24 14:40:13,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479802481] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:40:13,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:40:13,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 14:40:13,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751272170] [2024-10-24 14:40:13,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:40:13,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:40:13,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:40:13,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:40:13,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:40:13,573 INFO L87 Difference]: Start difference. First operand 603 states and 839 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:40:13,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:40:13,800 INFO L93 Difference]: Finished difference Result 1144 states and 1595 transitions. [2024-10-24 14:40:13,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 14:40:13,801 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 102 [2024-10-24 14:40:13,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:40:13,803 INFO L225 Difference]: With dead ends: 1144 [2024-10-24 14:40:13,803 INFO L226 Difference]: Without dead ends: 617 [2024-10-24 14:40:13,804 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:40:13,805 INFO L432 NwaCegarLoop]: 466 mSDtfsCounter, 8 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 14:40:13,805 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1301 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 14:40:13,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2024-10-24 14:40:13,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 615. [2024-10-24 14:40:13,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 606 states have (on average 1.3844884488448845) internal successors, (839), 608 states have internal predecessors, (839), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-24 14:40:13,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 851 transitions. [2024-10-24 14:40:13,819 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 851 transitions. Word has length 102 [2024-10-24 14:40:13,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:40:13,820 INFO L471 AbstractCegarLoop]: Abstraction has 615 states and 851 transitions. [2024-10-24 14:40:13,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:40:13,820 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 851 transitions. [2024-10-24 14:40:13,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-10-24 14:40:13,821 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:40:13,821 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:40:13,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 14:40:13,821 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:40:13,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:40:13,822 INFO L85 PathProgramCache]: Analyzing trace with hash -492506161, now seen corresponding path program 1 times [2024-10-24 14:40:13,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:40:13,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476156395] [2024-10-24 14:40:13,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:40:13,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:40:13,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:14,212 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:40:14,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:14,250 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 14:40:14,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:14,254 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 14:40:14,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:40:14,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476156395] [2024-10-24 14:40:14,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476156395] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:40:14,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431336978] [2024-10-24 14:40:14,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:40:14,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:40:14,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:40:14,258 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 14:40:14,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 14:40:14,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:14,557 INFO L255 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-24 14:40:14,565 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:40:14,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-24 14:40:14,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-10-24 14:40:14,764 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:40:14,764 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 14:40:14,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431336978] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:40:14,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 14:40:14,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 9 [2024-10-24 14:40:14,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369710800] [2024-10-24 14:40:14,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:40:14,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 14:40:14,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:40:14,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 14:40:14,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-24 14:40:14,766 INFO L87 Difference]: Start difference. First operand 615 states and 851 transitions. Second operand has 7 states, 6 states have (on average 16.166666666666668) internal successors, (97), 7 states have internal predecessors, (97), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-24 14:40:14,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:40:14,915 INFO L93 Difference]: Finished difference Result 1333 states and 1838 transitions. [2024-10-24 14:40:14,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 14:40:14,916 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.166666666666668) internal successors, (97), 7 states have internal predecessors, (97), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 102 [2024-10-24 14:40:14,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:40:14,919 INFO L225 Difference]: With dead ends: 1333 [2024-10-24 14:40:14,919 INFO L226 Difference]: Without dead ends: 857 [2024-10-24 14:40:14,920 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-10-24 14:40:14,921 INFO L432 NwaCegarLoop]: 505 mSDtfsCounter, 1207 mSDsluCounter, 1979 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1213 SdHoareTripleChecker+Valid, 2484 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 14:40:14,921 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1213 Valid, 2484 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 14:40:14,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2024-10-24 14:40:14,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 617. [2024-10-24 14:40:14,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 607 states have (on average 1.385502471169687) internal successors, (841), 610 states have internal predecessors, (841), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-10-24 14:40:14,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 854 transitions. [2024-10-24 14:40:14,940 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 854 transitions. Word has length 102 [2024-10-24 14:40:14,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:40:14,941 INFO L471 AbstractCegarLoop]: Abstraction has 617 states and 854 transitions. [2024-10-24 14:40:14,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.166666666666668) internal successors, (97), 7 states have internal predecessors, (97), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-24 14:40:14,941 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 854 transitions. [2024-10-24 14:40:14,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-24 14:40:14,942 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:40:14,942 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] [2024-10-24 14:40:14,962 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 14:40:15,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:40:15,147 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:40:15,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:40:15,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1821468575, now seen corresponding path program 1 times [2024-10-24 14:40:15,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:40:15,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939966753] [2024-10-24 14:40:15,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:40:15,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:40:15,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:15,570 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:40:15,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:15,656 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-24 14:40:15,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:15,662 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 14:40:15,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:40:15,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939966753] [2024-10-24 14:40:15,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939966753] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:40:15,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491606591] [2024-10-24 14:40:15,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:40:15,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:40:15,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:40:15,669 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 14:40:15,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 14:40:15,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:15,950 INFO L255 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-10-24 14:40:15,958 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:40:15,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-24 14:40:15,985 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 [2024-10-24 14:40:16,559 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 14:40:16,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 86 treesize of output 58 [2024-10-24 14:40:16,768 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-24 14:40:16,768 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 14:40:16,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491606591] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:40:16,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 14:40:16,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2024-10-24 14:40:16,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696681656] [2024-10-24 14:40:16,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:40:16,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 14:40:16,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:40:16,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 14:40:16,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2024-10-24 14:40:16,777 INFO L87 Difference]: Start difference. First operand 617 states and 854 transitions. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:40:18,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:40:18,979 INFO L93 Difference]: Finished difference Result 1421 states and 1955 transitions. [2024-10-24 14:40:18,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 14:40:18,980 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 104 [2024-10-24 14:40:18,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:40:18,983 INFO L225 Difference]: With dead ends: 1421 [2024-10-24 14:40:18,983 INFO L226 Difference]: Without dead ends: 896 [2024-10-24 14:40:18,985 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2024-10-24 14:40:18,985 INFO L432 NwaCegarLoop]: 455 mSDtfsCounter, 726 mSDsluCounter, 2847 mSDsCounter, 0 mSdLazyCounter, 1549 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 3302 SdHoareTripleChecker+Invalid, 1556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-24 14:40:18,985 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 3302 Invalid, 1556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1549 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-24 14:40:18,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2024-10-24 14:40:19,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 649. [2024-10-24 14:40:19,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 639 states have (on average 1.374021909233177) internal successors, (878), 642 states have internal predecessors, (878), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-10-24 14:40:19,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 891 transitions. [2024-10-24 14:40:19,006 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 891 transitions. Word has length 104 [2024-10-24 14:40:19,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:40:19,006 INFO L471 AbstractCegarLoop]: Abstraction has 649 states and 891 transitions. [2024-10-24 14:40:19,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:40:19,007 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 891 transitions. [2024-10-24 14:40:19,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-24 14:40:19,007 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:40:19,008 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] [2024-10-24 14:40:19,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-24 14:40:19,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-24 14:40:19,212 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:40:19,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:40:19,212 INFO L85 PathProgramCache]: Analyzing trace with hash 2088773923, now seen corresponding path program 1 times [2024-10-24 14:40:19,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:40:19,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250472350] [2024-10-24 14:40:19,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:40:19,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:40:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:19,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:40:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:19,425 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-24 14:40:19,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:19,435 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-24 14:40:19,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:40:19,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250472350] [2024-10-24 14:40:19,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250472350] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:40:19,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:40:19,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 14:40:19,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364593023] [2024-10-24 14:40:19,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:40:19,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 14:40:19,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:40:19,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 14:40:19,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 14:40:19,437 INFO L87 Difference]: Start difference. First operand 649 states and 891 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:40:19,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:40:19,682 INFO L93 Difference]: Finished difference Result 1130 states and 1546 transitions. [2024-10-24 14:40:19,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 14:40:19,684 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 104 [2024-10-24 14:40:19,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:40:19,687 INFO L225 Difference]: With dead ends: 1130 [2024-10-24 14:40:19,687 INFO L226 Difference]: Without dead ends: 509 [2024-10-24 14:40:19,688 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-24 14:40:19,689 INFO L432 NwaCegarLoop]: 376 mSDtfsCounter, 16 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1413 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 14:40:19,689 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1413 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 14:40:19,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2024-10-24 14:40:19,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 509. [2024-10-24 14:40:19,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 499 states have (on average 1.3386773547094188) internal successors, (668), 502 states have internal predecessors, (668), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-10-24 14:40:19,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 681 transitions. [2024-10-24 14:40:19,710 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 681 transitions. Word has length 104 [2024-10-24 14:40:19,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:40:19,710 INFO L471 AbstractCegarLoop]: Abstraction has 509 states and 681 transitions. [2024-10-24 14:40:19,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:40:19,710 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 681 transitions. [2024-10-24 14:40:19,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-10-24 14:40:19,712 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:40:19,712 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] [2024-10-24 14:40:19,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 14:40:19,712 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:40:19,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:40:19,713 INFO L85 PathProgramCache]: Analyzing trace with hash 694908058, now seen corresponding path program 1 times [2024-10-24 14:40:19,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:40:19,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944669761] [2024-10-24 14:40:19,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:40:19,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:40:20,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:20,170 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-24 14:40:20,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:20,230 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 14:40:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:20,236 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 14:40:20,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:40:20,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944669761] [2024-10-24 14:40:20,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944669761] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:40:20,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685420948] [2024-10-24 14:40:20,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:40:20,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:40:20,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:40:20,239 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 14:40:20,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 14:40:20,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:20,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-10-24 14:40:20,548 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:40:20,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-24 14:40:20,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-10-24 14:40:21,426 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-24 14:40:21,426 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 14:40:21,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685420948] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:40:21,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 14:40:21,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2024-10-24 14:40:21,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735649311] [2024-10-24 14:40:21,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:40:21,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 14:40:21,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:40:21,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 14:40:21,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2024-10-24 14:40:21,431 INFO L87 Difference]: Start difference. First operand 509 states and 681 transitions. Second operand has 13 states, 13 states have (on average 7.461538461538462) internal successors, (97), 13 states have internal predecessors, (97), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:40:23,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:40:23,489 INFO L93 Difference]: Finished difference Result 1220 states and 1649 transitions. [2024-10-24 14:40:23,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 14:40:23,490 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.461538461538462) internal successors, (97), 13 states have internal predecessors, (97), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 105 [2024-10-24 14:40:23,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:40:23,493 INFO L225 Difference]: With dead ends: 1220 [2024-10-24 14:40:23,493 INFO L226 Difference]: Without dead ends: 754 [2024-10-24 14:40:23,495 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=144, Invalid=506, Unknown=0, NotChecked=0, Total=650 [2024-10-24 14:40:23,496 INFO L432 NwaCegarLoop]: 388 mSDtfsCounter, 539 mSDsluCounter, 2379 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 2767 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-24 14:40:23,497 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 2767 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-24 14:40:23,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2024-10-24 14:40:23,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 513. [2024-10-24 14:40:23,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 503 states have (on average 1.337972166998012) internal successors, (673), 506 states have internal predecessors, (673), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-10-24 14:40:23,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 686 transitions. [2024-10-24 14:40:23,515 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 686 transitions. Word has length 105 [2024-10-24 14:40:23,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:40:23,516 INFO L471 AbstractCegarLoop]: Abstraction has 513 states and 686 transitions. [2024-10-24 14:40:23,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.461538461538462) internal successors, (97), 13 states have internal predecessors, (97), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:40:23,516 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 686 transitions. [2024-10-24 14:40:23,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-10-24 14:40:23,517 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:40:23,517 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] [2024-10-24 14:40:23,532 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 14:40:23,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:40:23,721 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:40:23,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:40:23,722 INFO L85 PathProgramCache]: Analyzing trace with hash 607447578, now seen corresponding path program 1 times [2024-10-24 14:40:23,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:40:23,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332748050] [2024-10-24 14:40:23,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:40:23,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:40:23,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:23,996 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 14:40:23,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:24,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-24 14:40:24,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:24,005 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-24 14:40:24,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:40:24,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332748050] [2024-10-24 14:40:24,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332748050] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:40:24,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:40:24,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 14:40:24,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417970696] [2024-10-24 14:40:24,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:40:24,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 14:40:24,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:40:24,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 14:40:24,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:40:24,007 INFO L87 Difference]: Start difference. First operand 513 states and 686 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 6 states have internal predecessors, (98), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:40:24,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:40:24,379 INFO L93 Difference]: Finished difference Result 987 states and 1332 transitions. [2024-10-24 14:40:24,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 14:40:24,380 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 6 states have internal predecessors, (98), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 106 [2024-10-24 14:40:24,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:40:24,382 INFO L225 Difference]: With dead ends: 987 [2024-10-24 14:40:24,383 INFO L226 Difference]: Without dead ends: 519 [2024-10-24 14:40:24,383 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:40:24,384 INFO L432 NwaCegarLoop]: 383 mSDtfsCounter, 12 mSDsluCounter, 1248 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 14:40:24,384 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1631 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 14:40:24,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2024-10-24 14:40:24,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 519. [2024-10-24 14:40:24,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 509 states have (on average 1.3339882121807465) internal successors, (679), 512 states have internal predecessors, (679), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-10-24 14:40:24,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 692 transitions. [2024-10-24 14:40:24,403 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 692 transitions. Word has length 106 [2024-10-24 14:40:24,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:40:24,405 INFO L471 AbstractCegarLoop]: Abstraction has 519 states and 692 transitions. [2024-10-24 14:40:24,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 6 states have internal predecessors, (98), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:40:24,405 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 692 transitions. [2024-10-24 14:40:24,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-10-24 14:40:24,406 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:40:24,406 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] [2024-10-24 14:40:24,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 14:40:24,406 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:40:24,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:40:24,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1056776723, now seen corresponding path program 1 times [2024-10-24 14:40:24,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:40:24,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590883706] [2024-10-24 14:40:24,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:40:24,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:40:24,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:24,722 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 14:40:24,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:24,727 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-24 14:40:24,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:24,732 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-24 14:40:24,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:40:24,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590883706] [2024-10-24 14:40:24,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590883706] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:40:24,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:40:24,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 14:40:24,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304753719] [2024-10-24 14:40:24,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:40:24,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 14:40:24,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:40:24,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 14:40:24,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-24 14:40:24,734 INFO L87 Difference]: Start difference. First operand 519 states and 692 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:40:25,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:40:25,203 INFO L93 Difference]: Finished difference Result 993 states and 1336 transitions. [2024-10-24 14:40:25,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 14:40:25,203 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 106 [2024-10-24 14:40:25,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:40:25,205 INFO L225 Difference]: With dead ends: 993 [2024-10-24 14:40:25,206 INFO L226 Difference]: Without dead ends: 529 [2024-10-24 14:40:25,207 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-24 14:40:25,207 INFO L432 NwaCegarLoop]: 371 mSDtfsCounter, 17 mSDsluCounter, 1831 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2202 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 14:40:25,207 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2202 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 14:40:25,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2024-10-24 14:40:25,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 527. [2024-10-24 14:40:25,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 517 states have (on average 1.332688588007737) internal successors, (689), 520 states have internal predecessors, (689), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-10-24 14:40:25,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 702 transitions. [2024-10-24 14:40:25,224 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 702 transitions. Word has length 106 [2024-10-24 14:40:25,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:40:25,225 INFO L471 AbstractCegarLoop]: Abstraction has 527 states and 702 transitions. [2024-10-24 14:40:25,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:40:25,225 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 702 transitions. [2024-10-24 14:40:25,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-10-24 14:40:25,226 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:40:25,226 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] [2024-10-24 14:40:25,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 14:40:25,226 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:40:25,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:40:25,226 INFO L85 PathProgramCache]: Analyzing trace with hash 758859383, now seen corresponding path program 1 times [2024-10-24 14:40:25,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:40:25,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719943136] [2024-10-24 14:40:25,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:40:25,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:40:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:25,552 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 14:40:25,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:25,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-24 14:40:25,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:25,627 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 14:40:25,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:40:25,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719943136] [2024-10-24 14:40:25,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719943136] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:40:25,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113537653] [2024-10-24 14:40:25,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:40:25,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:40:25,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:40:25,629 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 14:40:25,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 14:40:26,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:26,050 INFO L255 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-24 14:40:26,054 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:40:26,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-24 14:40:26,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-10-24 14:40:26,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-24 14:40:26,278 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-24 14:40:26,279 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 14:40:26,492 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-24 14:40:26,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113537653] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-24 14:40:26,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-24 14:40:26,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 7] total 13 [2024-10-24 14:40:26,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683841654] [2024-10-24 14:40:26,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:40:26,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 14:40:26,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:40:26,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 14:40:26,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-10-24 14:40:26,495 INFO L87 Difference]: Start difference. First operand 527 states and 702 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:40:26,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:40:26,606 INFO L93 Difference]: Finished difference Result 711 states and 951 transitions. [2024-10-24 14:40:26,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 14:40:26,606 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 107 [2024-10-24 14:40:26,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:40:26,609 INFO L225 Difference]: With dead ends: 711 [2024-10-24 14:40:26,609 INFO L226 Difference]: Without dead ends: 701 [2024-10-24 14:40:26,609 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 208 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-10-24 14:40:26,610 INFO L432 NwaCegarLoop]: 389 mSDtfsCounter, 477 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 14:40:26,610 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 1165 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 14:40:26,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2024-10-24 14:40:26,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 529. [2024-10-24 14:40:26,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 519 states have (on average 1.3314065510597302) internal successors, (691), 522 states have internal predecessors, (691), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-10-24 14:40:26,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 704 transitions. [2024-10-24 14:40:26,626 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 704 transitions. Word has length 107 [2024-10-24 14:40:26,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:40:26,626 INFO L471 AbstractCegarLoop]: Abstraction has 529 states and 704 transitions. [2024-10-24 14:40:26,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:40:26,627 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 704 transitions. [2024-10-24 14:40:26,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-10-24 14:40:26,628 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:40:26,628 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:40:26,647 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 14:40:26,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:40:26,829 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:40:26,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:40:26,829 INFO L85 PathProgramCache]: Analyzing trace with hash 14003156, now seen corresponding path program 1 times [2024-10-24 14:40:26,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:40:26,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627696940] [2024-10-24 14:40:26,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:40:26,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:40:26,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:27,044 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 14:40:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:27,050 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-24 14:40:27,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:27,058 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-24 14:40:27,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:40:27,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627696940] [2024-10-24 14:40:27,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627696940] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:40:27,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:40:27,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 14:40:27,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399714890] [2024-10-24 14:40:27,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:40:27,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 14:40:27,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:40:27,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 14:40:27,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-24 14:40:27,061 INFO L87 Difference]: Start difference. First operand 529 states and 704 transitions. Second operand has 6 states, 6 states have (on average 25.5) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:40:27,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:40:27,433 INFO L93 Difference]: Finished difference Result 1307 states and 1756 transitions. [2024-10-24 14:40:27,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 14:40:27,434 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 161 [2024-10-24 14:40:27,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:40:27,437 INFO L225 Difference]: With dead ends: 1307 [2024-10-24 14:40:27,437 INFO L226 Difference]: Without dead ends: 874 [2024-10-24 14:40:27,438 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:40:27,438 INFO L432 NwaCegarLoop]: 453 mSDtfsCounter, 1327 mSDsluCounter, 1038 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1332 SdHoareTripleChecker+Valid, 1491 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 14:40:27,439 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1332 Valid, 1491 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 14:40:27,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2024-10-24 14:40:27,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 669. [2024-10-24 14:40:27,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 658 states have (on average 1.337386018237082) internal successors, (880), 662 states have internal predecessors, (880), 7 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-10-24 14:40:27,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 895 transitions. [2024-10-24 14:40:27,462 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 895 transitions. Word has length 161 [2024-10-24 14:40:27,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:40:27,463 INFO L471 AbstractCegarLoop]: Abstraction has 669 states and 895 transitions. [2024-10-24 14:40:27,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:40:27,463 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 895 transitions. [2024-10-24 14:40:27,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-10-24 14:40:27,464 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:40:27,465 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:40:27,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 14:40:27,465 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:40:27,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:40:27,465 INFO L85 PathProgramCache]: Analyzing trace with hash 2072744000, now seen corresponding path program 1 times [2024-10-24 14:40:27,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:40:27,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819504763] [2024-10-24 14:40:27,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:40:27,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:40:27,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:27,851 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 14:40:27,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:27,908 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-24 14:40:27,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:27,915 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 14:40:27,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:40:27,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819504763] [2024-10-24 14:40:27,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819504763] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:40:27,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951768801] [2024-10-24 14:40:27,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:40:27,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:40:27,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:40:27,918 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 14:40:27,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 14:40:28,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:28,272 INFO L255 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-24 14:40:28,277 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:40:28,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-24 14:40:28,841 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-24 14:40:28,841 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 14:40:28,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951768801] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:40:28,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 14:40:28,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2024-10-24 14:40:28,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603611934] [2024-10-24 14:40:28,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:40:28,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 14:40:28,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:40:28,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 14:40:28,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-10-24 14:40:28,842 INFO L87 Difference]: Start difference. First operand 669 states and 895 transitions. Second operand has 10 states, 10 states have (on average 16.2) internal successors, (162), 10 states have internal predecessors, (162), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:40:29,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:40:29,672 INFO L93 Difference]: Finished difference Result 1312 states and 1762 transitions. [2024-10-24 14:40:29,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 14:40:29,672 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.2) internal successors, (162), 10 states have internal predecessors, (162), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 171 [2024-10-24 14:40:29,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:40:29,675 INFO L225 Difference]: With dead ends: 1312 [2024-10-24 14:40:29,676 INFO L226 Difference]: Without dead ends: 901 [2024-10-24 14:40:29,677 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2024-10-24 14:40:29,677 INFO L432 NwaCegarLoop]: 397 mSDtfsCounter, 387 mSDsluCounter, 2246 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 2643 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-24 14:40:29,677 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 2643 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-24 14:40:29,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2024-10-24 14:40:29,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 704. [2024-10-24 14:40:29,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 693 states have (on average 1.326118326118326) internal successors, (919), 697 states have internal predecessors, (919), 7 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-10-24 14:40:29,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 934 transitions. [2024-10-24 14:40:29,699 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 934 transitions. Word has length 171 [2024-10-24 14:40:29,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:40:29,699 INFO L471 AbstractCegarLoop]: Abstraction has 704 states and 934 transitions. [2024-10-24 14:40:29,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.2) internal successors, (162), 10 states have internal predecessors, (162), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:40:29,699 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 934 transitions. [2024-10-24 14:40:29,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-10-24 14:40:29,700 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:40:29,701 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:40:29,721 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-24 14:40:29,901 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,SelfDestructingSolverStorable14 [2024-10-24 14:40:29,902 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:40:29,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:40:29,902 INFO L85 PathProgramCache]: Analyzing trace with hash 413783112, now seen corresponding path program 1 times [2024-10-24 14:40:29,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:40:29,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539823598] [2024-10-24 14:40:29,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:40:29,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:40:30,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:30,268 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 14:40:30,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:30,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-24 14:40:30,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:30,329 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 14:40:30,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:40:30,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539823598] [2024-10-24 14:40:30,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539823598] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:40:30,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406504095] [2024-10-24 14:40:30,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:40:30,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:40:30,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:40:30,332 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 14:40:30,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 14:40:30,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:30,680 INFO L255 TraceCheckSpWp]: Trace formula consists of 805 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 14:40:30,683 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:40:30,766 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-24 14:40:30,766 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 14:40:30,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406504095] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:40:30,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 14:40:30,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-10-24 14:40:30,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64633784] [2024-10-24 14:40:30,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:40:30,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 14:40:30,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:40:30,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 14:40:30,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-24 14:40:30,768 INFO L87 Difference]: Start difference. First operand 704 states and 934 transitions. Second operand has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:40:30,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:40:30,975 INFO L93 Difference]: Finished difference Result 1359 states and 1813 transitions. [2024-10-24 14:40:30,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 14:40:30,976 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 172 [2024-10-24 14:40:30,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:40:30,978 INFO L225 Difference]: With dead ends: 1359 [2024-10-24 14:40:30,978 INFO L226 Difference]: Without dead ends: 700 [2024-10-24 14:40:30,980 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-24 14:40:30,980 INFO L432 NwaCegarLoop]: 378 mSDtfsCounter, 30 mSDsluCounter, 1262 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1640 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 14:40:30,980 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1640 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 14:40:30,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2024-10-24 14:40:30,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 700. [2024-10-24 14:40:31,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 689 states have (on average 1.3193033381712627) internal successors, (909), 693 states have internal predecessors, (909), 7 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-10-24 14:40:31,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 924 transitions. [2024-10-24 14:40:31,002 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 924 transitions. Word has length 172 [2024-10-24 14:40:31,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:40:31,002 INFO L471 AbstractCegarLoop]: Abstraction has 700 states and 924 transitions. [2024-10-24 14:40:31,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:40:31,002 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 924 transitions. [2024-10-24 14:40:31,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-10-24 14:40:31,004 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:40:31,004 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:40:31,022 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-24 14:40:31,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-24 14:40:31,205 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:40:31,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:40:31,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1145969371, now seen corresponding path program 1 times [2024-10-24 14:40:31,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:40:31,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124280907] [2024-10-24 14:40:31,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:40:31,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:40:31,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:31,512 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 14:40:31,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:31,516 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-24 14:40:31,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:31,520 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-24 14:40:31,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:40:31,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124280907] [2024-10-24 14:40:31,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124280907] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:40:31,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:40:31,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 14:40:31,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381008225] [2024-10-24 14:40:31,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:40:31,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 14:40:31,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:40:31,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 14:40:31,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:40:31,523 INFO L87 Difference]: Start difference. First operand 700 states and 924 transitions. Second operand has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 6 states have internal predecessors, (164), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:40:31,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:40:31,886 INFO L93 Difference]: Finished difference Result 1120 states and 1495 transitions. [2024-10-24 14:40:31,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 14:40:31,887 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 6 states have internal predecessors, (164), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 173 [2024-10-24 14:40:31,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:40:31,889 INFO L225 Difference]: With dead ends: 1120 [2024-10-24 14:40:31,889 INFO L226 Difference]: Without dead ends: 709 [2024-10-24 14:40:31,890 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:40:31,890 INFO L432 NwaCegarLoop]: 380 mSDtfsCounter, 15 mSDsluCounter, 1242 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1622 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 14:40:31,891 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1622 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 14:40:31,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2024-10-24 14:40:31,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 709. [2024-10-24 14:40:31,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 698 states have (on average 1.3151862464183381) internal successors, (918), 702 states have internal predecessors, (918), 7 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-10-24 14:40:31,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 933 transitions. [2024-10-24 14:40:31,912 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 933 transitions. Word has length 173 [2024-10-24 14:40:31,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:40:31,913 INFO L471 AbstractCegarLoop]: Abstraction has 709 states and 933 transitions. [2024-10-24 14:40:31,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 6 states have internal predecessors, (164), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:40:31,913 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 933 transitions. [2024-10-24 14:40:31,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-10-24 14:40:31,915 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:40:31,915 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:40:31,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-24 14:40:31,916 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:40:31,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:40:31,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1516264993, now seen corresponding path program 1 times [2024-10-24 14:40:31,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:40:31,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60757200] [2024-10-24 14:40:31,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:40:31,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:40:31,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:32,206 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 14:40:32,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:32,211 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-24 14:40:32,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:32,215 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-24 14:40:32,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:40:32,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60757200] [2024-10-24 14:40:32,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60757200] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:40:32,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:40:32,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 14:40:32,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914003352] [2024-10-24 14:40:32,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:40:32,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 14:40:32,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:40:32,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 14:40:32,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-24 14:40:32,218 INFO L87 Difference]: Start difference. First operand 709 states and 933 transitions. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 7 states have internal predecessors, (165), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:40:32,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:40:32,607 INFO L93 Difference]: Finished difference Result 1144 states and 1522 transitions. [2024-10-24 14:40:32,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 14:40:32,608 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 7 states have internal predecessors, (165), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 174 [2024-10-24 14:40:32,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:40:32,610 INFO L225 Difference]: With dead ends: 1144 [2024-10-24 14:40:32,610 INFO L226 Difference]: Without dead ends: 724 [2024-10-24 14:40:32,611 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-24 14:40:32,612 INFO L432 NwaCegarLoop]: 370 mSDtfsCounter, 19 mSDsluCounter, 1821 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 2191 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 14:40:32,612 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 2191 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 14:40:32,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2024-10-24 14:40:32,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 721. [2024-10-24 14:40:32,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 710 states have (on average 1.3140845070422535) internal successors, (933), 714 states have internal predecessors, (933), 7 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-10-24 14:40:32,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 948 transitions. [2024-10-24 14:40:32,633 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 948 transitions. Word has length 174 [2024-10-24 14:40:32,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:40:32,634 INFO L471 AbstractCegarLoop]: Abstraction has 721 states and 948 transitions. [2024-10-24 14:40:32,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 7 states have internal predecessors, (165), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:40:32,634 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 948 transitions. [2024-10-24 14:40:32,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-10-24 14:40:32,635 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:40:32,635 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:40:32,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-24 14:40:32,636 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:40:32,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:40:32,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1553840635, now seen corresponding path program 1 times [2024-10-24 14:40:32,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:40:32,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511163773] [2024-10-24 14:40:32,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:40:32,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:40:32,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:32,966 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 14:40:32,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:33,015 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-24 14:40:33,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:33,020 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 14:40:33,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:40:33,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511163773] [2024-10-24 14:40:33,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511163773] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:40:33,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612081271] [2024-10-24 14:40:33,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:40:33,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:40:33,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:40:33,022 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 14:40:33,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 14:40:33,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:33,452 INFO L255 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 99 conjuncts are in the unsatisfiable core [2024-10-24 14:40:33,459 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:40:33,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-24 14:40:33,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-24 14:40:33,716 INFO L349 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2024-10-24 14:40:33,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 29 [2024-10-24 14:40:33,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-24 14:40:33,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2024-10-24 14:40:33,884 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-10-24 14:40:33,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2024-10-24 14:40:33,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1