./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-2.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 0fdcb64865aeb8184805095bc8dbe7392078d445cf902388dac9d1ca4533bb8c --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 11:45:17,497 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 11:45:17,549 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-12 11:45:17,552 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 11:45:17,552 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 11:45:17,570 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 11:45:17,571 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 11:45:17,571 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 11:45:17,572 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 11:45:17,572 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 11:45:17,573 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 11:45:17,574 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 11:45:17,574 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 11:45:17,575 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 11:45:17,575 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 11:45:17,575 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 11:45:17,578 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 11:45:17,579 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 11:45:17,579 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 11:45:17,579 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 11:45:17,579 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 11:45:17,580 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 11:45:17,580 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 11:45:17,580 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 11:45:17,580 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 11:45:17,580 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 11:45:17,581 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 11:45:17,581 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 11:45:17,581 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 11:45:17,581 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 11:45:17,581 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 11:45:17,581 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 11:45:17,582 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 11:45:17,582 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 11:45:17,582 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 11:45:17,582 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 11:45:17,582 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 11:45:17,582 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 11:45:17,582 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 11:45:17,583 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 11:45:17,583 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 11:45:17,583 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 11:45:17,583 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0fdcb64865aeb8184805095bc8dbe7392078d445cf902388dac9d1ca4533bb8c [2024-11-12 11:45:17,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 11:45:17,784 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 11:45:17,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 11:45:17,787 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 11:45:17,788 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 11:45:17,788 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-2.i [2024-11-12 11:45:18,967 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 11:45:19,180 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 11:45:19,184 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-2.i [2024-11-12 11:45:19,199 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e18ecc2f6/bd76b44ef7f04a95af3c1806044d9a43/FLAGfa3acddce [2024-11-12 11:45:19,517 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e18ecc2f6/bd76b44ef7f04a95af3c1806044d9a43 [2024-11-12 11:45:19,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 11:45:19,520 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 11:45:19,521 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 11:45:19,521 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 11:45:19,525 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 11:45:19,525 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:45:19" (1/1) ... [2024-11-12 11:45:19,526 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65614772 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:45:19, skipping insertion in model container [2024-11-12 11:45:19,526 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:45:19" (1/1) ... [2024-11-12 11:45:19,566 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 11:45:19,894 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-2.i[37435,37448] [2024-11-12 11:45:20,034 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 11:45:20,041 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 11:45:20,081 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-2.i[37435,37448] [2024-11-12 11:45:20,160 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 11:45:20,196 INFO L204 MainTranslator]: Completed translation [2024-11-12 11:45:20,196 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:45:20 WrapperNode [2024-11-12 11:45:20,197 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 11:45:20,197 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 11:45:20,197 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 11:45:20,198 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 11:45:20,203 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:45:20" (1/1) ... [2024-11-12 11:45:20,235 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:45:20" (1/1) ... [2024-11-12 11:45:20,297 INFO L138 Inliner]: procedures = 207, calls = 272, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1443 [2024-11-12 11:45:20,297 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 11:45:20,298 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 11:45:20,298 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 11:45:20,298 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 11:45:20,308 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:45:20" (1/1) ... [2024-11-12 11:45:20,309 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:45:20" (1/1) ... [2024-11-12 11:45:20,324 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:45:20" (1/1) ... [2024-11-12 11:45:20,387 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]. [2024-11-12 11:45:20,387 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:45:20" (1/1) ... [2024-11-12 11:45:20,387 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:45:20" (1/1) ... [2024-11-12 11:45:20,426 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:45:20" (1/1) ... [2024-11-12 11:45:20,447 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:45:20" (1/1) ... [2024-11-12 11:45:20,460 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:45:20" (1/1) ... [2024-11-12 11:45:20,466 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:45:20" (1/1) ... [2024-11-12 11:45:20,479 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 11:45:20,480 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 11:45:20,480 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 11:45:20,480 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 11:45:20,481 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:45:20" (1/1) ... [2024-11-12 11:45:20,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 11:45:20,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 11:45:20,519 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-12 11:45:20,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-12 11:45:20,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-12 11:45:20,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-12 11:45:20,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-12 11:45:20,575 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-12 11:45:20,575 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-12 11:45:20,575 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-12 11:45:20,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-12 11:45:20,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-12 11:45:20,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-12 11:45:20,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-12 11:45:20,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-12 11:45:20,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 11:45:20,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 11:45:20,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-12 11:45:20,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 11:45:20,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 11:45:20,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-12 11:45:20,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-12 11:45:20,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 11:45:20,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-12 11:45:20,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-12 11:45:20,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-12 11:45:20,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 11:45:20,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 11:45:20,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-12 11:45:20,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 11:45:20,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 11:45:20,753 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 11:45:20,755 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 11:45:22,026 INFO L? ?]: Removed 321 outVars from TransFormulas that were not future-live. [2024-11-12 11:45:22,026 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 11:45:22,045 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 11:45:22,048 INFO L316 CfgBuilder]: Removed 63 assume(true) statements. [2024-11-12 11:45:22,048 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:45:22 BoogieIcfgContainer [2024-11-12 11:45:22,048 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 11:45:22,081 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 11:45:22,081 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 11:45:22,084 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 11:45:22,085 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:45:19" (1/3) ... [2024-11-12 11:45:22,086 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@256ea5f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:45:22, skipping insertion in model container [2024-11-12 11:45:22,086 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:45:20" (2/3) ... [2024-11-12 11:45:22,086 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@256ea5f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:45:22, skipping insertion in model container [2024-11-12 11:45:22,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:45:22" (3/3) ... [2024-11-12 11:45:22,088 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_nondet_test2-2.i [2024-11-12 11:45:22,102 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 11:45:22,102 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-12 11:45:22,175 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 11:45:22,181 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;@7e27fefb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 11:45:22,182 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-12 11:45:22,188 INFO L276 IsEmpty]: Start isEmpty. Operand has 401 states, 395 states have (on average 1.620253164556962) internal successors, (640), 396 states have internal predecessors, (640), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-12 11:45:22,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-12 11:45:22,194 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:45:22,195 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 11:45:22,195 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:45:22,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:45:22,201 INFO L85 PathProgramCache]: Analyzing trace with hash -271903450, now seen corresponding path program 1 times [2024-11-12 11:45:22,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:45:22,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92547073] [2024-11-12 11:45:22,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:45:22,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:45:22,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:45:22,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 11:45:22,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:45:22,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92547073] [2024-11-12 11:45:22,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92547073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:45:22,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:45:22,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 11:45:22,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839741861] [2024-11-12 11:45:22,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:45:22,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-12 11:45:22,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:45:22,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-12 11:45:22,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-12 11:45:22,404 INFO L87 Difference]: Start difference. First operand has 401 states, 395 states have (on average 1.620253164556962) internal successors, (640), 396 states have internal predecessors, (640), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 11:45:22,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:45:22,467 INFO L93 Difference]: Finished difference Result 799 states and 1288 transitions. [2024-11-12 11:45:22,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-12 11:45:22,471 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-12 11:45:22,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:45:22,483 INFO L225 Difference]: With dead ends: 799 [2024-11-12 11:45:22,484 INFO L226 Difference]: Without dead ends: 362 [2024-11-12 11:45:22,487 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-12 11:45:22,491 INFO L435 NwaCegarLoop]: 578 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-12 11:45:22,492 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-12 11:45:22,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2024-11-12 11:45:22,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2024-11-12 11:45:22,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 357 states have (on average 1.453781512605042) internal successors, (519), 357 states have internal predecessors, (519), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-12 11:45:22,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 525 transitions. [2024-11-12 11:45:22,550 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 525 transitions. Word has length 11 [2024-11-12 11:45:22,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:45:22,551 INFO L471 AbstractCegarLoop]: Abstraction has 362 states and 525 transitions. [2024-11-12 11:45:22,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 11:45:22,551 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 525 transitions. [2024-11-12 11:45:22,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-12 11:45:22,559 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:45:22,559 INFO L218 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] [2024-11-12 11:45:22,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 11:45:22,559 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:45:22,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:45:22,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1335073267, now seen corresponding path program 1 times [2024-11-12 11:45:22,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:45:22,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162127991] [2024-11-12 11:45:22,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:45:22,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:45:22,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:45:22,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 11:45:22,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:45:22,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162127991] [2024-11-12 11:45:22,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162127991] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:45:22,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:45:22,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 11:45:22,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199006929] [2024-11-12 11:45:22,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:45:22,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 11:45:22,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:45:22,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 11:45:22,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 11:45:22,844 INFO L87 Difference]: Start difference. First operand 362 states and 525 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 11:45:22,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:45:22,947 INFO L93 Difference]: Finished difference Result 479 states and 693 transitions. [2024-11-12 11:45:22,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 11:45:22,948 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-12 11:45:22,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:45:22,951 INFO L225 Difference]: With dead ends: 479 [2024-11-12 11:45:22,953 INFO L226 Difference]: Without dead ends: 320 [2024-11-12 11:45:22,953 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-12 11:45:22,954 INFO L435 NwaCegarLoop]: 423 mSDtfsCounter, 30 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 11:45:22,955 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1250 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 11:45:22,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-11-12 11:45:22,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2024-11-12 11:45:22,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 315 states have (on average 1.403174603174603) internal successors, (442), 315 states have internal predecessors, (442), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-12 11:45:22,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 448 transitions. [2024-11-12 11:45:22,970 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 448 transitions. Word has length 66 [2024-11-12 11:45:22,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:45:22,970 INFO L471 AbstractCegarLoop]: Abstraction has 320 states and 448 transitions. [2024-11-12 11:45:22,970 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 11:45:22,970 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 448 transitions. [2024-11-12 11:45:22,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-12 11:45:22,972 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:45:22,973 INFO L218 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] [2024-11-12 11:45:22,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 11:45:22,973 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:45:22,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:45:22,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1779429657, now seen corresponding path program 1 times [2024-11-12 11:45:22,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:45:22,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214495760] [2024-11-12 11:45:22,974 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:45:22,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:45:23,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:45:23,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 11:45:23,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:45:23,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214495760] [2024-11-12 11:45:23,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214495760] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:45:23,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:45:23,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 11:45:23,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062214336] [2024-11-12 11:45:23,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:45:23,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 11:45:23,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:45:23,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 11:45:23,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-12 11:45:23,397 INFO L87 Difference]: Start difference. First operand 320 states and 448 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 11:45:23,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:45:23,498 INFO L93 Difference]: Finished difference Result 752 states and 1048 transitions. [2024-11-12 11:45:23,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 11:45:23,499 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-12 11:45:23,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:45:23,502 INFO L225 Difference]: With dead ends: 752 [2024-11-12 11:45:23,502 INFO L226 Difference]: Without dead ends: 632 [2024-11-12 11:45:23,503 INFO L434 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 [2024-11-12 11:45:23,505 INFO L435 NwaCegarLoop]: 472 mSDtfsCounter, 428 mSDsluCounter, 1367 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 1839 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 11:45:23,507 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 1839 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 11:45:23,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2024-11-12 11:45:23,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 322. [2024-11-12 11:45:23,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 317 states have (on average 1.4006309148264984) internal successors, (444), 317 states have internal predecessors, (444), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-12 11:45:23,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 450 transitions. [2024-11-12 11:45:23,528 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 450 transitions. Word has length 66 [2024-11-12 11:45:23,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:45:23,529 INFO L471 AbstractCegarLoop]: Abstraction has 322 states and 450 transitions. [2024-11-12 11:45:23,529 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 11:45:23,530 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 450 transitions. [2024-11-12 11:45:23,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-12 11:45:23,537 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:45:23,538 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-12 11:45:23,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 11:45:23,538 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:45:23,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:45:23,538 INFO L85 PathProgramCache]: Analyzing trace with hash 857389398, now seen corresponding path program 1 times [2024-11-12 11:45:23,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:45:23,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741484497] [2024-11-12 11:45:23,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:45:23,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:45:23,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:45:23,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 11:45:23,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:45:23,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741484497] [2024-11-12 11:45:23,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741484497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:45:23,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:45:23,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 11:45:23,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215330317] [2024-11-12 11:45:23,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:45:23,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 11:45:23,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:45:23,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 11:45:23,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 11:45:23,799 INFO L87 Difference]: Start difference. First operand 322 states and 450 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 11:45:23,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:45:23,865 INFO L93 Difference]: Finished difference Result 597 states and 829 transitions. [2024-11-12 11:45:23,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 11:45:23,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2024-11-12 11:45:23,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:45:23,868 INFO L225 Difference]: With dead ends: 597 [2024-11-12 11:45:23,868 INFO L226 Difference]: Without dead ends: 280 [2024-11-12 11:45:23,869 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-12 11:45:23,870 INFO L435 NwaCegarLoop]: 340 mSDtfsCounter, 30 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 11:45:23,872 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1001 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 11:45:23,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-11-12 11:45:23,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2024-11-12 11:45:23,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 275 states have (on average 1.3345454545454545) internal successors, (367), 275 states have internal predecessors, (367), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-12 11:45:23,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 373 transitions. [2024-11-12 11:45:23,884 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 373 transitions. Word has length 142 [2024-11-12 11:45:23,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:45:23,884 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 373 transitions. [2024-11-12 11:45:23,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 11:45:23,884 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 373 transitions. [2024-11-12 11:45:23,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-12 11:45:23,885 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:45:23,886 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-12 11:45:23,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 11:45:23,886 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:45:23,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:45:23,887 INFO L85 PathProgramCache]: Analyzing trace with hash -172432950, now seen corresponding path program 1 times [2024-11-12 11:45:23,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:45:23,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559946190] [2024-11-12 11:45:23,889 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:45:23,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:45:23,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:45:24,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 11:45:24,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:45:24,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559946190] [2024-11-12 11:45:24,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559946190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:45:24,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:45:24,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 11:45:24,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657382804] [2024-11-12 11:45:24,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:45:24,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 11:45:24,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:45:24,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 11:45:24,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 11:45:24,049 INFO L87 Difference]: Start difference. First operand 280 states and 373 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 11:45:24,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:45:24,090 INFO L93 Difference]: Finished difference Result 738 states and 988 transitions. [2024-11-12 11:45:24,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 11:45:24,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2024-11-12 11:45:24,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:45:24,092 INFO L225 Difference]: With dead ends: 738 [2024-11-12 11:45:24,093 INFO L226 Difference]: Without dead ends: 463 [2024-11-12 11:45:24,094 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 11:45:24,095 INFO L435 NwaCegarLoop]: 469 mSDtfsCounter, 178 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-12 11:45:24,095 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 813 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-12 11:45:24,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2024-11-12 11:45:24,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 461. [2024-11-12 11:45:24,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 456 states have (on average 1.3399122807017543) internal successors, (611), 456 states have internal predecessors, (611), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-12 11:45:24,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 617 transitions. [2024-11-12 11:45:24,104 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 617 transitions. Word has length 142 [2024-11-12 11:45:24,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:45:24,104 INFO L471 AbstractCegarLoop]: Abstraction has 461 states and 617 transitions. [2024-11-12 11:45:24,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 11:45:24,105 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 617 transitions. [2024-11-12 11:45:24,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-12 11:45:24,106 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:45:24,106 INFO L218 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] [2024-11-12 11:45:24,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 11:45:24,106 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:45:24,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:45:24,107 INFO L85 PathProgramCache]: Analyzing trace with hash -902254685, now seen corresponding path program 1 times [2024-11-12 11:45:24,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:45:24,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707048746] [2024-11-12 11:45:24,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:45:24,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:45:24,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:45:24,334 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-12 11:45:24,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:45:24,338 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-12 11:45:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:45:24,343 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 11:45:24,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:45:24,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707048746] [2024-11-12 11:45:24,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707048746] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:45:24,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:45:24,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 11:45:24,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149509605] [2024-11-12 11:45:24,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:45:24,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 11:45:24,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:45:24,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 11:45:24,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 11:45:24,348 INFO L87 Difference]: Start difference. First operand 461 states and 617 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:45:24,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:45:24,495 INFO L93 Difference]: Finished difference Result 890 states and 1201 transitions. [2024-11-12 11:45:24,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 11:45:24,496 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 157 [2024-11-12 11:45:24,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:45:24,499 INFO L225 Difference]: With dead ends: 890 [2024-11-12 11:45:24,501 INFO L226 Difference]: Without dead ends: 464 [2024-11-12 11:45:24,502 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 11:45:24,502 INFO L435 NwaCegarLoop]: 352 mSDtfsCounter, 3 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 11:45:24,503 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 984 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 11:45:24,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2024-11-12 11:45:24,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 461. [2024-11-12 11:45:24,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 456 states have (on average 1.3267543859649122) internal successors, (605), 456 states have internal predecessors, (605), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-12 11:45:24,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 611 transitions. [2024-11-12 11:45:24,513 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 611 transitions. Word has length 157 [2024-11-12 11:45:24,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:45:24,513 INFO L471 AbstractCegarLoop]: Abstraction has 461 states and 611 transitions. [2024-11-12 11:45:24,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:45:24,514 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 611 transitions. [2024-11-12 11:45:24,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-12 11:45:24,515 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:45:24,515 INFO L218 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] [2024-11-12 11:45:24,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 11:45:24,515 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:45:24,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:45:24,516 INFO L85 PathProgramCache]: Analyzing trace with hash -195658079, now seen corresponding path program 1 times [2024-11-12 11:45:24,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:45:24,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500452762] [2024-11-12 11:45:24,516 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:45:24,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:45:24,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:45:24,777 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-12 11:45:24,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:45:24,783 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-12 11:45:24,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:45:24,789 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 11:45:24,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:45:24,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500452762] [2024-11-12 11:45:24,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500452762] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:45:24,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:45:24,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 11:45:24,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459858211] [2024-11-12 11:45:24,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:45:24,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 11:45:24,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:45:24,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 11:45:24,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-12 11:45:24,793 INFO L87 Difference]: Start difference. First operand 461 states and 611 transitions. Second operand has 6 states, 6 states have (on average 25.0) internal successors, (150), 5 states have internal predecessors, (150), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:45:25,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:45:25,076 INFO L93 Difference]: Finished difference Result 912 states and 1215 transitions. [2024-11-12 11:45:25,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 11:45:25,077 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 5 states have internal predecessors, (150), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 157 [2024-11-12 11:45:25,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:45:25,079 INFO L225 Difference]: With dead ends: 912 [2024-11-12 11:45:25,079 INFO L226 Difference]: Without dead ends: 543 [2024-11-12 11:45:25,080 INFO L434 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 [2024-11-12 11:45:25,081 INFO L435 NwaCegarLoop]: 429 mSDtfsCounter, 921 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-12 11:45:25,082 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 1269 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-12 11:45:25,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2024-11-12 11:45:25,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 367. [2024-11-12 11:45:25,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 362 states have (on average 1.3176795580110496) internal successors, (477), 362 states have internal predecessors, (477), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-12 11:45:25,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 483 transitions. [2024-11-12 11:45:25,097 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 483 transitions. Word has length 157 [2024-11-12 11:45:25,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:45:25,097 INFO L471 AbstractCegarLoop]: Abstraction has 367 states and 483 transitions. [2024-11-12 11:45:25,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 5 states have internal predecessors, (150), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:45:25,098 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 483 transitions. [2024-11-12 11:45:25,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-12 11:45:25,099 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:45:25,100 INFO L218 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] [2024-11-12 11:45:25,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-12 11:45:25,100 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:45:25,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:45:25,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1003236787, now seen corresponding path program 1 times [2024-11-12 11:45:25,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:45:25,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116873950] [2024-11-12 11:45:25,101 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:45:25,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:45:25,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:45:25,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-12 11:45:25,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:45:25,661 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-12 11:45:25,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:45:25,666 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 11:45:25,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:45:25,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116873950] [2024-11-12 11:45:25,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116873950] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 11:45:25,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306892641] [2024-11-12 11:45:25,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:45:25,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:45:25,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 11:45:25,668 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 11:45:25,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 11:45:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:45:25,994 INFO L256 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-12 11:45:26,002 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 11:45:26,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-12 11:45:26,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2024-11-12 11:45:26,558 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 11:45:26,558 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 [2024-11-12 11:45:26,788 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 11:45:26,788 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 11:45:26,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306892641] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:45:26,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 11:45:26,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 14 [2024-11-12 11:45:26,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470809089] [2024-11-12 11:45:26,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:45:26,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-12 11:45:26,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:45:26,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-12 11:45:26,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-12 11:45:26,790 INFO L87 Difference]: Start difference. First operand 367 states and 483 transitions. Second operand has 11 states, 11 states have (on average 14.545454545454545) internal successors, (160), 11 states have internal predecessors, (160), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:45:28,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:45:28,051 INFO L93 Difference]: Finished difference Result 861 states and 1146 transitions. [2024-11-12 11:45:28,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-12 11:45:28,052 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.545454545454545) internal successors, (160), 11 states have internal predecessors, (160), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 167 [2024-11-12 11:45:28,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:45:28,055 INFO L225 Difference]: With dead ends: 861 [2024-11-12 11:45:28,055 INFO L226 Difference]: Without dead ends: 539 [2024-11-12 11:45:28,056 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2024-11-12 11:45:28,057 INFO L435 NwaCegarLoop]: 379 mSDtfsCounter, 462 mSDsluCounter, 2056 mSDsCounter, 0 mSdLazyCounter, 738 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 2435 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-12 11:45:28,058 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 2435 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 738 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-12 11:45:28,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2024-11-12 11:45:28,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 367. [2024-11-12 11:45:28,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 362 states have (on average 1.3149171270718232) internal successors, (476), 362 states have internal predecessors, (476), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-12 11:45:28,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 482 transitions. [2024-11-12 11:45:28,069 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 482 transitions. Word has length 167 [2024-11-12 11:45:28,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:45:28,070 INFO L471 AbstractCegarLoop]: Abstraction has 367 states and 482 transitions. [2024-11-12 11:45:28,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.545454545454545) internal successors, (160), 11 states have internal predecessors, (160), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:45:28,070 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 482 transitions. [2024-11-12 11:45:28,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-12 11:45:28,072 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:45:28,072 INFO L218 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] [2024-11-12 11:45:28,089 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-12 11:45:28,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:45:28,273 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:45:28,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:45:28,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1763945042, now seen corresponding path program 1 times [2024-11-12 11:45:28,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:45:28,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860615911] [2024-11-12 11:45:28,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:45:28,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:45:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:45:28,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-12 11:45:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:45:28,654 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-12 11:45:28,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:45:28,657 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 11:45:28,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:45:28,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860615911] [2024-11-12 11:45:28,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860615911] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 11:45:28,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992304338] [2024-11-12 11:45:28,657 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:45:28,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:45:28,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 11:45:28,659 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 11:45:28,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 11:45:28,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:45:28,946 INFO L256 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-12 11:45:28,950 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 11:45:28,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-12 11:45:29,299 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 11:45:29,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 55 [2024-11-12 11:45:29,444 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-12 11:45:29,444 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 11:45:29,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992304338] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:45:29,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 11:45:29,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2024-11-12 11:45:29,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742670436] [2024-11-12 11:45:29,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:45:29,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 11:45:29,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:45:29,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 11:45:29,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-12 11:45:29,446 INFO L87 Difference]: Start difference. First operand 367 states and 482 transitions. Second operand has 10 states, 10 states have (on average 16.0) internal successors, (160), 10 states have internal predecessors, (160), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:45:30,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:45:30,149 INFO L93 Difference]: Finished difference Result 668 states and 879 transitions. [2024-11-12 11:45:30,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 11:45:30,149 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.0) internal successors, (160), 10 states have internal predecessors, (160), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 168 [2024-11-12 11:45:30,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:45:30,151 INFO L225 Difference]: With dead ends: 668 [2024-11-12 11:45:30,152 INFO L226 Difference]: Without dead ends: 551 [2024-11-12 11:45:30,152 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2024-11-12 11:45:30,152 INFO L435 NwaCegarLoop]: 400 mSDtfsCounter, 360 mSDsluCounter, 1937 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 2337 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-12 11:45:30,153 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 2337 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-12 11:45:30,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2024-11-12 11:45:30,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 404. [2024-11-12 11:45:30,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 399 states have (on average 1.2957393483709274) internal successors, (517), 399 states have internal predecessors, (517), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-12 11:45:30,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 523 transitions. [2024-11-12 11:45:30,165 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 523 transitions. Word has length 168 [2024-11-12 11:45:30,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:45:30,166 INFO L471 AbstractCegarLoop]: Abstraction has 404 states and 523 transitions. [2024-11-12 11:45:30,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.0) internal successors, (160), 10 states have internal predecessors, (160), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:45:30,166 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 523 transitions. [2024-11-12 11:45:30,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-12 11:45:30,167 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:45:30,167 INFO L218 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] [2024-11-12 11:45:30,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-12 11:45:30,371 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,SelfDestructingSolverStorable8 [2024-11-12 11:45:30,373 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:45:30,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:45:30,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1107893590, now seen corresponding path program 1 times [2024-11-12 11:45:30,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:45:30,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242677873] [2024-11-12 11:45:30,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:45:30,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:45:30,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:45:30,691 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-12 11:45:30,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:45:30,711 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-12 11:45:30,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:45:30,715 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 11:45:30,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:45:30,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242677873] [2024-11-12 11:45:30,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242677873] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 11:45:30,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205117356] [2024-11-12 11:45:30,715 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:45:30,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:45:30,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 11:45:30,717 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 11:45:30,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 11:45:31,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:45:31,316 INFO L256 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-12 11:45:31,323 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 11:45:31,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-12 11:45:31,377 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 11:45:31,378 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 11:45:31,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205117356] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:45:31,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 11:45:31,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 8 [2024-11-12 11:45:31,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603216084] [2024-11-12 11:45:31,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:45:31,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 11:45:31,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:45:31,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 11:45:31,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-12 11:45:31,380 INFO L87 Difference]: Start difference. First operand 404 states and 523 transitions. Second operand has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-12 11:45:31,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:45:31,469 INFO L93 Difference]: Finished difference Result 769 states and 1001 transitions. [2024-11-12 11:45:31,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 11:45:31,482 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 169 [2024-11-12 11:45:31,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:45:31,484 INFO L225 Difference]: With dead ends: 769 [2024-11-12 11:45:31,484 INFO L226 Difference]: Without dead ends: 460 [2024-11-12 11:45:31,485 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-12 11:45:31,485 INFO L435 NwaCegarLoop]: 393 mSDtfsCounter, 188 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 1888 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 11:45:31,485 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 1888 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 11:45:31,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2024-11-12 11:45:31,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 407. [2024-11-12 11:45:31,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 401 states have (on average 1.2967581047381547) internal successors, (520), 402 states have internal predecessors, (520), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-12 11:45:31,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 527 transitions. [2024-11-12 11:45:31,501 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 527 transitions. Word has length 169 [2024-11-12 11:45:31,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:45:31,501 INFO L471 AbstractCegarLoop]: Abstraction has 407 states and 527 transitions. [2024-11-12 11:45:31,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-12 11:45:31,501 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 527 transitions. [2024-11-12 11:45:31,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-12 11:45:31,502 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:45:31,502 INFO L218 NwaCegarLoop]: trace histogram [2, 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] [2024-11-12 11:45:31,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-12 11:45:31,706 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 [2024-11-12 11:45:31,707 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:45:31,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:45:31,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1114326644, now seen corresponding path program 1 times [2024-11-12 11:45:31,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:45:31,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490911794] [2024-11-12 11:45:31,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:45:31,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:45:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:45:32,105 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-12 11:45:32,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:45:32,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-12 11:45:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:45:32,177 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 11:45:32,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:45:32,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490911794] [2024-11-12 11:45:32,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490911794] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 11:45:32,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660265147] [2024-11-12 11:45:32,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:45:32,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:45:32,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 11:45:32,180 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 11:45:32,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 11:45:32,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:45:32,717 INFO L256 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-11-12 11:45:32,726 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 11:45:32,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-12 11:45:32,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-12 11:45:32,761 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 [2024-11-12 11:45:32,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2024-11-12 11:45:33,373 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 11:45:33,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 7 [2024-11-12 11:45:41,882 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-12 11:45:49,894 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-12 11:45:57,908 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-12 11:46:10,301 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-12 11:46:18,321 WARN L286 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-12 11:46:25,060 WARN L286 SmtUtils]: Spent 6.74s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-12 11:46:43,648 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-12 11:46:49,215 WARN L286 SmtUtils]: Spent 5.57s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)