./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc 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_SFH_test10-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 85fe539c4a9811cd5d49f239f4680cc0b3752a2958e9f287c34e302b923af4f9 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 05:22:25,576 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 05:22:25,654 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 05:22:25,660 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 05:22:25,662 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 05:22:25,695 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 05:22:25,696 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 05:22:25,697 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 05:22:25,698 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 05:22:25,699 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 05:22:25,699 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 05:22:25,700 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 05:22:25,700 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 05:22:25,701 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 05:22:25,703 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 05:22:25,703 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 05:22:25,703 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 05:22:25,704 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 05:22:25,704 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 05:22:25,704 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 05:22:25,704 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 05:22:25,708 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 05:22:25,709 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 05:22:25,709 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 05:22:25,709 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 05:22:25,709 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 05:22:25,710 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 05:22:25,710 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 05:22:25,710 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 05:22:25,710 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 05:22:25,711 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 05:22:25,711 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 05:22:25,711 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 05:22:25,711 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 05:22:25,712 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 05:22:25,712 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 05:22:25,712 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 05:22:25,713 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 05:22:25,713 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 05:22:25,713 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 05:22:25,713 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 05:22:25,715 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 05:22:25,715 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85fe539c4a9811cd5d49f239f4680cc0b3752a2958e9f287c34e302b923af4f9 [2024-11-19 05:22:25,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 05:22:25,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 05:22:26,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 05:22:26,001 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 05:22:26,002 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 05:22:26,003 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-1.i [2024-11-19 05:22:27,464 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 05:22:27,779 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 05:22:27,780 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-1.i [2024-11-19 05:22:27,805 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/507fc10f9/644fd1534b78405a93541a9dea3fc8b7/FLAG695d13da3 [2024-11-19 05:22:27,817 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/507fc10f9/644fd1534b78405a93541a9dea3fc8b7 [2024-11-19 05:22:27,819 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 05:22:27,820 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 05:22:27,821 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 05:22:27,821 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 05:22:27,825 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 05:22:27,826 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:22:27" (1/1) ... [2024-11-19 05:22:27,826 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5664db21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:27, skipping insertion in model container [2024-11-19 05:22:27,827 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:22:27" (1/1) ... [2024-11-19 05:22:27,881 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 05:22:28,353 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-1.i[33022,33035] [2024-11-19 05:22:28,612 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 05:22:28,624 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 05:22:28,665 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-1.i[33022,33035] [2024-11-19 05:22:28,767 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 05:22:28,803 INFO L204 MainTranslator]: Completed translation [2024-11-19 05:22:28,803 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:28 WrapperNode [2024-11-19 05:22:28,804 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 05:22:28,805 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 05:22:28,805 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 05:22:28,805 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 05:22:28,812 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:28" (1/1) ... [2024-11-19 05:22:28,856 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:28" (1/1) ... [2024-11-19 05:22:28,970 INFO L138 Inliner]: procedures = 177, calls = 506, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 3410 [2024-11-19 05:22:28,970 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 05:22:28,972 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 05:22:28,972 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 05:22:28,972 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 05:22:28,983 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:28" (1/1) ... [2024-11-19 05:22:28,983 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:28" (1/1) ... [2024-11-19 05:22:29,003 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:28" (1/1) ... [2024-11-19 05:22:29,139 INFO L175 MemorySlicer]: Split 480 memory accesses to 3 slices as follows [2, 372, 106]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 86 writes are split as follows [0, 82, 4]. [2024-11-19 05:22:29,143 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:28" (1/1) ... [2024-11-19 05:22:29,143 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:28" (1/1) ... [2024-11-19 05:22:29,209 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:28" (1/1) ... [2024-11-19 05:22:29,233 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:28" (1/1) ... [2024-11-19 05:22:29,243 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:28" (1/1) ... [2024-11-19 05:22:29,257 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:28" (1/1) ... [2024-11-19 05:22:29,275 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 05:22:29,276 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 05:22:29,276 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 05:22:29,276 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 05:22:29,277 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:28" (1/1) ... [2024-11-19 05:22:29,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 05:22:29,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 05:22:29,312 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) [2024-11-19 05:22:29,324 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 [2024-11-19 05:22:29,365 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2024-11-19 05:22:29,366 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2024-11-19 05:22:29,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 05:22:29,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 05:22:29,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 05:22:29,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-19 05:22:29,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-19 05:22:29,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 05:22:29,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 05:22:29,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 05:22:29,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-19 05:22:29,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-19 05:22:29,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-19 05:22:29,369 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-19 05:22:29,369 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-19 05:22:29,369 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-19 05:22:29,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 05:22:29,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 05:22:29,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-19 05:22:29,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-19 05:22:29,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-19 05:22:29,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 05:22:29,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-19 05:22:29,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-19 05:22:29,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-19 05:22:29,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 05:22:29,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 05:22:29,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 05:22:29,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 05:22:29,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 05:22:29,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 05:22:29,730 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 05:22:29,732 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 05:22:32,345 INFO L? ?]: Removed 780 outVars from TransFormulas that were not future-live. [2024-11-19 05:22:32,345 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 05:22:32,388 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 05:22:32,389 INFO L316 CfgBuilder]: Removed 151 assume(true) statements. [2024-11-19 05:22:32,392 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:22:32 BoogieIcfgContainer [2024-11-19 05:22:32,392 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 05:22:32,395 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 05:22:32,395 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 05:22:32,398 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 05:22:32,398 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:22:27" (1/3) ... [2024-11-19 05:22:32,399 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d027e30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:22:32, skipping insertion in model container [2024-11-19 05:22:32,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:28" (2/3) ... [2024-11-19 05:22:32,400 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d027e30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:22:32, skipping insertion in model container [2024-11-19 05:22:32,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:22:32" (3/3) ... [2024-11-19 05:22:32,401 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test10-1.i [2024-11-19 05:22:32,414 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 05:22:32,414 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 05:22:32,507 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 05:22:32,515 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;@da1ebbc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 05:22:32,515 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 05:22:32,525 INFO L276 IsEmpty]: Start isEmpty. Operand has 1030 states, 1011 states have (on average 1.6280909990108803) internal successors, (1646), 1016 states have internal predecessors, (1646), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-19 05:22:32,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-19 05:22:32,534 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 05:22:32,535 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:22:32,536 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 05:22:32,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:22:32,541 INFO L85 PathProgramCache]: Analyzing trace with hash -2093043057, now seen corresponding path program 1 times [2024-11-19 05:22:32,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:22:32,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609469527] [2024-11-19 05:22:32,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:22:32,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:22:32,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:22:32,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 05:22:32,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:22:32,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609469527] [2024-11-19 05:22:32,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609469527] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:22:32,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:22:32,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 05:22:32,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406758288] [2024-11-19 05:22:32,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:22:32,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 05:22:32,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:22:32,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 05:22:32,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 05:22:32,769 INFO L87 Difference]: Start difference. First operand has 1030 states, 1011 states have (on average 1.6280909990108803) internal successors, (1646), 1016 states have internal predecessors, (1646), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 05:22:32,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 05:22:32,854 INFO L93 Difference]: Finished difference Result 2058 states and 3354 transitions. [2024-11-19 05:22:32,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 05:22:32,856 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-19 05:22:32,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 05:22:32,882 INFO L225 Difference]: With dead ends: 2058 [2024-11-19 05:22:32,882 INFO L226 Difference]: Without dead ends: 1026 [2024-11-19 05:22:32,892 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 05:22:32,898 INFO L432 NwaCegarLoop]: 1515 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, 1515 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 [2024-11-19 05:22:32,899 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1515 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 05:22:32,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2024-11-19 05:22:33,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 1026. [2024-11-19 05:22:33,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1026 states, 1008 states have (on average 1.4722222222222223) internal successors, (1484), 1013 states have internal predecessors, (1484), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-19 05:22:33,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1511 transitions. [2024-11-19 05:22:33,017 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1511 transitions. Word has length 13 [2024-11-19 05:22:33,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 05:22:33,018 INFO L471 AbstractCegarLoop]: Abstraction has 1026 states and 1511 transitions. [2024-11-19 05:22:33,019 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 05:22:33,019 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1511 transitions. [2024-11-19 05:22:33,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-19 05:22:33,025 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 05:22:33,025 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:22:33,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 05:22:33,026 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 05:22:33,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:22:33,029 INFO L85 PathProgramCache]: Analyzing trace with hash 883861861, now seen corresponding path program 1 times [2024-11-19 05:22:33,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:22:33,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180486976] [2024-11-19 05:22:33,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:22:33,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:22:33,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:22:33,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 05:22:33,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:22:33,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180486976] [2024-11-19 05:22:33,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180486976] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:22:33,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:22:33,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 05:22:33,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366503087] [2024-11-19 05:22:33,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:22:33,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 05:22:33,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:22:33,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 05:22:33,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 05:22:33,490 INFO L87 Difference]: Start difference. First operand 1026 states and 1511 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 05:22:33,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 05:22:33,699 INFO L93 Difference]: Finished difference Result 2046 states and 3016 transitions. [2024-11-19 05:22:33,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 05:22:33,700 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-19 05:22:33,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 05:22:33,709 INFO L225 Difference]: With dead ends: 2046 [2024-11-19 05:22:33,709 INFO L226 Difference]: Without dead ends: 1412 [2024-11-19 05:22:33,713 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 05:22:33,715 INFO L432 NwaCegarLoop]: 1550 mSDtfsCounter, 548 mSDsluCounter, 2991 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 4541 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 05:22:33,715 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [554 Valid, 4541 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 05:22:33,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2024-11-19 05:22:33,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1028. [2024-11-19 05:22:33,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 1010 states have (on average 1.4712871287128713) internal successors, (1486), 1015 states have internal predecessors, (1486), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-19 05:22:33,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1513 transitions. [2024-11-19 05:22:33,751 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1513 transitions. Word has length 68 [2024-11-19 05:22:33,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 05:22:33,751 INFO L471 AbstractCegarLoop]: Abstraction has 1028 states and 1513 transitions. [2024-11-19 05:22:33,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 05:22:33,752 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1513 transitions. [2024-11-19 05:22:33,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-19 05:22:33,757 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 05:22:33,757 INFO L215 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, 1, 1, 1] [2024-11-19 05:22:33,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 05:22:33,757 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 05:22:33,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:22:33,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1634856174, now seen corresponding path program 1 times [2024-11-19 05:22:33,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:22:33,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679250471] [2024-11-19 05:22:33,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:22:33,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:22:33,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:22:34,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 05:22:34,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:22:34,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679250471] [2024-11-19 05:22:34,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679250471] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:22:34,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:22:34,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 05:22:34,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187547563] [2024-11-19 05:22:34,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:22:34,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 05:22:34,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:22:34,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 05:22:34,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-19 05:22:34,496 INFO L87 Difference]: Start difference. First operand 1028 states and 1513 transitions. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 05:22:34,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 05:22:34,778 INFO L93 Difference]: Finished difference Result 2436 states and 3581 transitions. [2024-11-19 05:22:34,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 05:22:34,779 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2024-11-19 05:22:34,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 05:22:34,785 INFO L225 Difference]: With dead ends: 2436 [2024-11-19 05:22:34,785 INFO L226 Difference]: Without dead ends: 1412 [2024-11-19 05:22:34,787 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-19 05:22:34,790 INFO L432 NwaCegarLoop]: 1553 mSDtfsCounter, 546 mSDsluCounter, 4980 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 6533 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 05:22:34,790 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 6533 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 05:22:34,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2024-11-19 05:22:34,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1031. [2024-11-19 05:22:34,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 1013 states have (on average 1.4698914116485686) internal successors, (1489), 1018 states have internal predecessors, (1489), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-19 05:22:34,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1516 transitions. [2024-11-19 05:22:34,824 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1516 transitions. Word has length 145 [2024-11-19 05:22:34,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 05:22:34,824 INFO L471 AbstractCegarLoop]: Abstraction has 1031 states and 1516 transitions. [2024-11-19 05:22:34,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 05:22:34,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1516 transitions. [2024-11-19 05:22:34,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-19 05:22:34,830 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 05:22:34,831 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:22:34,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 05:22:34,831 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 05:22:34,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:22:34,832 INFO L85 PathProgramCache]: Analyzing trace with hash -348533310, now seen corresponding path program 1 times [2024-11-19 05:22:34,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:22:34,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639485296] [2024-11-19 05:22:34,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:22:34,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:22:34,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:22:35,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 05:22:35,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:22:35,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639485296] [2024-11-19 05:22:35,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639485296] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:22:35,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:22:35,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 05:22:35,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542262102] [2024-11-19 05:22:35,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:22:35,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 05:22:35,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:22:35,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 05:22:35,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 05:22:35,326 INFO L87 Difference]: Start difference. First operand 1031 states and 1516 transitions. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 05:22:35,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 05:22:35,436 INFO L93 Difference]: Finished difference Result 2013 states and 2959 transitions. [2024-11-19 05:22:35,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 05:22:35,437 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 216 [2024-11-19 05:22:35,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 05:22:35,442 INFO L225 Difference]: With dead ends: 2013 [2024-11-19 05:22:35,442 INFO L226 Difference]: Without dead ends: 989 [2024-11-19 05:22:35,444 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 05:22:35,445 INFO L432 NwaCegarLoop]: 1409 mSDtfsCounter, 30 mSDsluCounter, 2799 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 4208 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 [2024-11-19 05:22:35,448 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 4208 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 05:22:35,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 989 states. [2024-11-19 05:22:35,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 989 to 989. [2024-11-19 05:22:35,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 971 states have (on average 1.454170957775489) internal successors, (1412), 976 states have internal predecessors, (1412), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-19 05:22:35,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1439 transitions. [2024-11-19 05:22:35,473 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1439 transitions. Word has length 216 [2024-11-19 05:22:35,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 05:22:35,475 INFO L471 AbstractCegarLoop]: Abstraction has 989 states and 1439 transitions. [2024-11-19 05:22:35,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 05:22:35,475 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1439 transitions. [2024-11-19 05:22:35,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-19 05:22:35,480 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 05:22:35,480 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:22:35,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 05:22:35,481 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 05:22:35,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:22:35,481 INFO L85 PathProgramCache]: Analyzing trace with hash 902700470, now seen corresponding path program 1 times [2024-11-19 05:22:35,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:22:35,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962187064] [2024-11-19 05:22:35,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:22:35,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:22:35,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:22:35,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 05:22:35,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:22:35,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962187064] [2024-11-19 05:22:35,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962187064] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:22:35,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:22:35,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 05:22:35,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457422837] [2024-11-19 05:22:35,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:22:35,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 05:22:35,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:22:35,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 05:22:35,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 05:22:35,744 INFO L87 Difference]: Start difference. First operand 989 states and 1439 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 05:22:35,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 05:22:35,835 INFO L93 Difference]: Finished difference Result 2502 states and 3654 transitions. [2024-11-19 05:22:35,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 05:22:35,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 216 [2024-11-19 05:22:35,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 05:22:35,842 INFO L225 Difference]: With dead ends: 2502 [2024-11-19 05:22:35,843 INFO L226 Difference]: Without dead ends: 1520 [2024-11-19 05:22:35,846 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 05:22:35,848 INFO L432 NwaCegarLoop]: 1426 mSDtfsCounter, 716 mSDsluCounter, 1408 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 2834 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 05:22:35,849 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 2834 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 05:22:35,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2024-11-19 05:22:35,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 1361. [2024-11-19 05:22:35,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1361 states, 1341 states have (on average 1.4571215510812827) internal successors, (1954), 1346 states have internal predecessors, (1954), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-19 05:22:35,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 1985 transitions. [2024-11-19 05:22:35,889 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 1985 transitions. Word has length 216 [2024-11-19 05:22:35,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 05:22:35,890 INFO L471 AbstractCegarLoop]: Abstraction has 1361 states and 1985 transitions. [2024-11-19 05:22:35,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 05:22:35,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 1985 transitions. [2024-11-19 05:22:35,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-19 05:22:35,893 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 05:22:35,894 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:22:35,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 05:22:35,895 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 05:22:35,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:22:35,896 INFO L85 PathProgramCache]: Analyzing trace with hash 708780073, now seen corresponding path program 1 times [2024-11-19 05:22:35,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:22:35,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450618958] [2024-11-19 05:22:35,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:22:35,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:22:36,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:22:36,375 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 05:22:36,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:22:36,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450618958] [2024-11-19 05:22:36,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450618958] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:22:36,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:22:36,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 05:22:36,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552601998] [2024-11-19 05:22:36,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:22:36,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 05:22:36,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:22:36,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 05:22:36,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 05:22:36,380 INFO L87 Difference]: Start difference. First operand 1361 states and 1985 transitions. Second operand has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 05:22:36,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 05:22:36,497 INFO L93 Difference]: Finished difference Result 2588 states and 3781 transitions. [2024-11-19 05:22:36,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 05:22:36,498 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 231 [2024-11-19 05:22:36,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 05:22:36,506 INFO L225 Difference]: With dead ends: 2588 [2024-11-19 05:22:36,507 INFO L226 Difference]: Without dead ends: 1319 [2024-11-19 05:22:36,509 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 05:22:36,511 INFO L432 NwaCegarLoop]: 1326 mSDtfsCounter, 30 mSDsluCounter, 2633 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3959 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 [2024-11-19 05:22:36,513 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3959 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 05:22:36,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2024-11-19 05:22:36,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1319. [2024-11-19 05:22:36,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 1299 states have (on average 1.4449576597382603) internal successors, (1877), 1304 states have internal predecessors, (1877), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-19 05:22:36,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1908 transitions. [2024-11-19 05:22:36,547 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1908 transitions. Word has length 231 [2024-11-19 05:22:36,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 05:22:36,547 INFO L471 AbstractCegarLoop]: Abstraction has 1319 states and 1908 transitions. [2024-11-19 05:22:36,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 05:22:36,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1908 transitions. [2024-11-19 05:22:36,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-19 05:22:36,551 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 05:22:36,551 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:22:36,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 05:22:36,551 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 05:22:36,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:22:36,552 INFO L85 PathProgramCache]: Analyzing trace with hash 332973109, now seen corresponding path program 1 times [2024-11-19 05:22:36,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:22:36,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788534388] [2024-11-19 05:22:36,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:22:36,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:22:36,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:22:36,912 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 05:22:36,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:22:36,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788534388] [2024-11-19 05:22:36,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788534388] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:22:36,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:22:36,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 05:22:36,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519379921] [2024-11-19 05:22:36,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:22:36,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 05:22:36,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:22:36,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 05:22:36,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 05:22:36,916 INFO L87 Difference]: Start difference. First operand 1319 states and 1908 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 05:22:36,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 05:22:36,991 INFO L93 Difference]: Finished difference Result 2546 states and 3693 transitions. [2024-11-19 05:22:36,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 05:22:36,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 231 [2024-11-19 05:22:36,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 05:22:36,999 INFO L225 Difference]: With dead ends: 2546 [2024-11-19 05:22:37,000 INFO L226 Difference]: Without dead ends: 1319 [2024-11-19 05:22:37,002 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 05:22:37,002 INFO L432 NwaCegarLoop]: 1339 mSDtfsCounter, 1 mSDsluCounter, 1317 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2656 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 05:22:37,003 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2656 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 05:22:37,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2024-11-19 05:22:37,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1319. [2024-11-19 05:22:37,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 1299 states have (on average 1.4426481909160893) internal successors, (1874), 1304 states have internal predecessors, (1874), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-19 05:22:37,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1905 transitions. [2024-11-19 05:22:37,040 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1905 transitions. Word has length 231 [2024-11-19 05:22:37,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 05:22:37,041 INFO L471 AbstractCegarLoop]: Abstraction has 1319 states and 1905 transitions. [2024-11-19 05:22:37,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 05:22:37,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1905 transitions. [2024-11-19 05:22:37,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-19 05:22:37,045 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 05:22:37,046 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:22:37,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 05:22:37,046 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 05:22:37,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:22:37,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1394171853, now seen corresponding path program 1 times [2024-11-19 05:22:37,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:22:37,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107994539] [2024-11-19 05:22:37,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:22:37,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:22:37,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:22:37,437 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 05:22:37,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:22:37,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107994539] [2024-11-19 05:22:37,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107994539] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:22:37,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:22:37,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 05:22:37,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987690942] [2024-11-19 05:22:37,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:22:37,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 05:22:37,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:22:37,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 05:22:37,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 05:22:37,441 INFO L87 Difference]: Start difference. First operand 1319 states and 1905 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 05:22:37,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 05:22:37,554 INFO L93 Difference]: Finished difference Result 3117 states and 4518 transitions. [2024-11-19 05:22:37,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 05:22:37,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 231 [2024-11-19 05:22:37,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 05:22:37,564 INFO L225 Difference]: With dead ends: 3117 [2024-11-19 05:22:37,564 INFO L226 Difference]: Without dead ends: 1890 [2024-11-19 05:22:37,566 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 05:22:37,568 INFO L432 NwaCegarLoop]: 1373 mSDtfsCounter, 597 mSDsluCounter, 1325 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 2698 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 05:22:37,569 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [600 Valid, 2698 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 05:22:37,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1890 states. [2024-11-19 05:22:37,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1890 to 1885. [2024-11-19 05:22:37,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1885 states, 1859 states have (on average 1.444862829478214) internal successors, (2686), 1864 states have internal predecessors, (2686), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 18 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-19 05:22:37,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 2729 transitions. [2024-11-19 05:22:37,629 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 2729 transitions. Word has length 231 [2024-11-19 05:22:37,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 05:22:37,630 INFO L471 AbstractCegarLoop]: Abstraction has 1885 states and 2729 transitions. [2024-11-19 05:22:37,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 05:22:37,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 2729 transitions. [2024-11-19 05:22:37,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2024-11-19 05:22:37,634 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 05:22:37,634 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:22:37,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 05:22:37,635 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 05:22:37,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:22:37,636 INFO L85 PathProgramCache]: Analyzing trace with hash 2134175325, now seen corresponding path program 1 times [2024-11-19 05:22:37,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:22:37,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470078933] [2024-11-19 05:22:37,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:22:37,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:22:37,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:22:38,197 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 05:22:38,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:22:38,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470078933] [2024-11-19 05:22:38,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470078933] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:22:38,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:22:38,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 05:22:38,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451174175] [2024-11-19 05:22:38,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:22:38,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 05:22:38,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:22:38,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 05:22:38,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 05:22:38,201 INFO L87 Difference]: Start difference. First operand 1885 states and 2729 transitions. Second operand has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 05:22:38,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 05:22:38,771 INFO L93 Difference]: Finished difference Result 4070 states and 5934 transitions. [2024-11-19 05:22:38,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 05:22:38,772 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 246 [2024-11-19 05:22:38,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 05:22:38,782 INFO L225 Difference]: With dead ends: 4070 [2024-11-19 05:22:38,782 INFO L226 Difference]: Without dead ends: 2423 [2024-11-19 05:22:38,785 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-19 05:22:38,786 INFO L432 NwaCegarLoop]: 1383 mSDtfsCounter, 3537 mSDsluCounter, 1564 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3542 SdHoareTripleChecker+Valid, 2947 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 05:22:38,786 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3542 Valid, 2947 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 05:22:38,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2423 states. [2024-11-19 05:22:38,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2423 to 1456. [2024-11-19 05:22:38,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1435 states have (on average 1.4292682926829268) internal successors, (2051), 1440 states have internal predecessors, (2051), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-19 05:22:38,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 2084 transitions. [2024-11-19 05:22:38,837 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 2084 transitions. Word has length 246 [2024-11-19 05:22:38,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 05:22:38,837 INFO L471 AbstractCegarLoop]: Abstraction has 1456 states and 2084 transitions. [2024-11-19 05:22:38,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 05:22:38,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 2084 transitions. [2024-11-19 05:22:38,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-11-19 05:22:38,841 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 05:22:38,841 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:22:38,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 05:22:38,841 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 05:22:38,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:22:38,842 INFO L85 PathProgramCache]: Analyzing trace with hash 293493169, now seen corresponding path program 1 times [2024-11-19 05:22:38,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:22:38,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995470278] [2024-11-19 05:22:38,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:22:38,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:22:38,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:22:39,293 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-19 05:22:39,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:22:39,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995470278] [2024-11-19 05:22:39,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995470278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:22:39,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:22:39,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 05:22:39,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89066930] [2024-11-19 05:22:39,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:22:39,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 05:22:39,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:22:39,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 05:22:39,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 05:22:39,296 INFO L87 Difference]: Start difference. First operand 1456 states and 2084 transitions. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 05:22:39,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 05:22:39,397 INFO L93 Difference]: Finished difference Result 2331 states and 3384 transitions. [2024-11-19 05:22:39,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 05:22:39,398 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 256 [2024-11-19 05:22:39,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 05:22:39,404 INFO L225 Difference]: With dead ends: 2331 [2024-11-19 05:22:39,405 INFO L226 Difference]: Without dead ends: 1414 [2024-11-19 05:22:39,406 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 05:22:39,407 INFO L432 NwaCegarLoop]: 1240 mSDtfsCounter, 30 mSDsluCounter, 2462 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3702 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 05:22:39,407 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3702 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 05:22:39,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2024-11-19 05:22:39,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 1414. [2024-11-19 05:22:39,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1414 states, 1393 states have (on average 1.4170854271356783) internal successors, (1974), 1398 states have internal predecessors, (1974), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-19 05:22:39,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1414 states to 1414 states and 2007 transitions. [2024-11-19 05:22:39,452 INFO L78 Accepts]: Start accepts. Automaton has 1414 states and 2007 transitions. Word has length 256 [2024-11-19 05:22:39,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 05:22:39,453 INFO L471 AbstractCegarLoop]: Abstraction has 1414 states and 2007 transitions. [2024-11-19 05:22:39,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 05:22:39,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1414 states and 2007 transitions. [2024-11-19 05:22:39,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-11-19 05:22:39,456 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 05:22:39,457 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:22:39,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 05:22:39,457 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 05:22:39,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:22:39,458 INFO L85 PathProgramCache]: Analyzing trace with hash -484839325, now seen corresponding path program 1 times [2024-11-19 05:22:39,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:22:39,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197742941] [2024-11-19 05:22:39,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:22:39,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:22:39,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:22:39,856 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-19 05:22:39,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:22:39,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197742941] [2024-11-19 05:22:39,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197742941] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:22:39,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:22:39,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 05:22:39,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906500449] [2024-11-19 05:22:39,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:22:39,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 05:22:39,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:22:39,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 05:22:39,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 05:22:39,859 INFO L87 Difference]: Start difference. First operand 1414 states and 2007 transitions. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 05:22:39,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 05:22:39,929 INFO L93 Difference]: Finished difference Result 2264 states and 3267 transitions. [2024-11-19 05:22:39,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 05:22:39,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 256 [2024-11-19 05:22:39,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 05:22:39,938 INFO L225 Difference]: With dead ends: 2264 [2024-11-19 05:22:39,938 INFO L226 Difference]: Without dead ends: 1414 [2024-11-19 05:22:39,940 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 05:22:39,941 INFO L432 NwaCegarLoop]: 1254 mSDtfsCounter, 1 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2486 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 05:22:39,941 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2486 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 05:22:39,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2024-11-19 05:22:39,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 1414. [2024-11-19 05:22:39,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1414 states, 1393 states have (on average 1.4149318018664752) internal successors, (1971), 1398 states have internal predecessors, (1971), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-19 05:22:39,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1414 states to 1414 states and 2004 transitions. [2024-11-19 05:22:39,987 INFO L78 Accepts]: Start accepts. Automaton has 1414 states and 2004 transitions. Word has length 256 [2024-11-19 05:22:39,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 05:22:39,988 INFO L471 AbstractCegarLoop]: Abstraction has 1414 states and 2004 transitions. [2024-11-19 05:22:39,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 05:22:39,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1414 states and 2004 transitions. [2024-11-19 05:22:39,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-11-19 05:22:39,992 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 05:22:39,992 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:22:39,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 05:22:39,994 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 05:22:39,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:22:39,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1942921113, now seen corresponding path program 1 times [2024-11-19 05:22:39,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:22:39,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532846072] [2024-11-19 05:22:39,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:22:39,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:22:40,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:22:41,206 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 05:22:41,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:22:41,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532846072] [2024-11-19 05:22:41,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532846072] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 05:22:41,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777855282] [2024-11-19 05:22:41,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:22:41,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 05:22:41,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 05:22:41,210 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) [2024-11-19 05:22:41,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 05:22:41,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:22:41,912 INFO L255 TraceCheckSpWp]: Trace formula consists of 1263 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 05:22:41,928 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 05:22:41,965 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 [2024-11-19 05:22:42,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-19 05:22:42,420 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 05:22:42,423 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 05:22:42,773 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 05:22:42,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777855282] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 05:22:42,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 05:22:42,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 12 [2024-11-19 05:22:42,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105687134] [2024-11-19 05:22:42,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 05:22:42,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 05:22:42,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:22:42,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 05:22:42,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-11-19 05:22:42,777 INFO L87 Difference]: Start difference. First operand 1414 states and 2004 transitions. Second operand has 12 states, 12 states have (on average 46.666666666666664) internal successors, (560), 12 states have internal predecessors, (560), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-19 05:22:43,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 05:22:43,427 INFO L93 Difference]: Finished difference Result 3238 states and 4559 transitions. [2024-11-19 05:22:43,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 05:22:43,428 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 46.666666666666664) internal successors, (560), 12 states have internal predecessors, (560), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 256 [2024-11-19 05:22:43,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 05:22:43,437 INFO L225 Difference]: With dead ends: 3238 [2024-11-19 05:22:43,437 INFO L226 Difference]: Without dead ends: 2359 [2024-11-19 05:22:43,439 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 500 SyntacticMatches, 7 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-11-19 05:22:43,440 INFO L432 NwaCegarLoop]: 1573 mSDtfsCounter, 2199 mSDsluCounter, 9021 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2214 SdHoareTripleChecker+Valid, 10594 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 05:22:43,440 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2214 Valid, 10594 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 05:22:43,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2359 states. [2024-11-19 05:22:43,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2359 to 2068. [2024-11-19 05:22:43,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2068 states, 2035 states have (on average 1.3862407862407862) internal successors, (2821), 2040 states have internal predecessors, (2821), 28 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-19 05:22:43,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2068 states to 2068 states and 2876 transitions. [2024-11-19 05:22:43,518 INFO L78 Accepts]: Start accepts. Automaton has 2068 states and 2876 transitions. Word has length 256 [2024-11-19 05:22:43,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 05:22:43,519 INFO L471 AbstractCegarLoop]: Abstraction has 2068 states and 2876 transitions. [2024-11-19 05:22:43,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 46.666666666666664) internal successors, (560), 12 states have internal predecessors, (560), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-19 05:22:43,519 INFO L276 IsEmpty]: Start isEmpty. Operand 2068 states and 2876 transitions. [2024-11-19 05:22:43,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2024-11-19 05:22:43,527 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 05:22:43,528 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:22:43,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 05:22:43,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-19 05:22:43,733 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 05:22:43,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:22:43,734 INFO L85 PathProgramCache]: Analyzing trace with hash -15120626, now seen corresponding path program 1 times [2024-11-19 05:22:43,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:22:43,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641199468] [2024-11-19 05:22:43,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:22:43,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:22:44,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:22:46,173 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 234 proven. 5 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2024-11-19 05:22:46,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:22:46,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641199468] [2024-11-19 05:22:46,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641199468] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 05:22:46,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260266154] [2024-11-19 05:22:46,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:22:46,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 05:22:46,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 05:22:46,177 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) [2024-11-19 05:22:46,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 05:22:47,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:22:47,333 INFO L255 TraceCheckSpWp]: Trace formula consists of 2403 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 05:22:47,354 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 05:22:47,363 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 [2024-11-19 05:22:47,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-19 05:22:47,770 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 234 proven. 5 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2024-11-19 05:22:47,771 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 05:22:48,106 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 234 proven. 5 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2024-11-19 05:22:48,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260266154] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 05:22:48,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 05:22:48,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 5] total 13 [2024-11-19 05:22:48,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682605417] [2024-11-19 05:22:48,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 05:22:48,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 05:22:48,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:22:48,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 05:22:48,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-11-19 05:22:48,114 INFO L87 Difference]: Start difference. First operand 2068 states and 2876 transitions. Second operand has 13 states, 13 states have (on average 49.76923076923077) internal successors, (647), 13 states have internal predecessors, (647), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-19 05:22:48,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 05:22:48,677 INFO L93 Difference]: Finished difference Result 3979 states and 5545 transitions. [2024-11-19 05:22:48,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 05:22:48,678 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 49.76923076923077) internal successors, (647), 13 states have internal predecessors, (647), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 487 [2024-11-19 05:22:48,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 05:22:48,755 INFO L225 Difference]: With dead ends: 3979 [2024-11-19 05:22:48,755 INFO L226 Difference]: Without dead ends: 2359 [2024-11-19 05:22:48,757 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 986 GetRequests, 963 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2024-11-19 05:22:48,758 INFO L432 NwaCegarLoop]: 1599 mSDtfsCounter, 2980 mSDsluCounter, 8291 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2994 SdHoareTripleChecker+Valid, 9890 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 05:22:48,758 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2994 Valid, 9890 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 05:22:48,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2359 states. [2024-11-19 05:22:48,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2359 to 2071. [2024-11-19 05:22:48,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2071 states, 2038 states have (on average 1.3846908734052994) internal successors, (2822), 2043 states have internal predecessors, (2822), 28 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-19 05:22:48,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2071 states to 2071 states and 2877 transitions. [2024-11-19 05:22:48,834 INFO L78 Accepts]: Start accepts. Automaton has 2071 states and 2877 transitions. Word has length 487 [2024-11-19 05:22:48,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 05:22:48,835 INFO L471 AbstractCegarLoop]: Abstraction has 2071 states and 2877 transitions. [2024-11-19 05:22:48,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 49.76923076923077) internal successors, (647), 13 states have internal predecessors, (647), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-19 05:22:48,836 INFO L276 IsEmpty]: Start isEmpty. Operand 2071 states and 2877 transitions. [2024-11-19 05:22:48,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2024-11-19 05:22:48,848 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 05:22:48,849 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:22:48,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 05:22:49,049 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,SelfDestructingSolverStorable12 [2024-11-19 05:22:49,050 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 05:22:49,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:22:49,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1772522056, now seen corresponding path program 1 times [2024-11-19 05:22:49,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:22:49,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973369562] [2024-11-19 05:22:49,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:22:49,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:22:49,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:22:55,122 INFO L134 CoverageAnalysis]: Checked inductivity of 908 backedges. 0 proven. 884 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 05:22:55,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:22:55,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973369562] [2024-11-19 05:22:55,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973369562] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 05:22:55,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539756092] [2024-11-19 05:22:55,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:22:55,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 05:22:55,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 05:22:55,126 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) [2024-11-19 05:22:55,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 05:22:56,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:22:56,467 INFO L255 TraceCheckSpWp]: Trace formula consists of 3384 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 05:22:56,485 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 05:22:56,489 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 [2024-11-19 05:22:56,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-19 05:22:57,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-19 05:22:57,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-19 05:22:57,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-19 05:22:57,490 INFO L134 CoverageAnalysis]: Checked inductivity of 908 backedges. 0 proven. 884 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 05:22:57,491 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 05:22:58,444 INFO L134 CoverageAnalysis]: Checked inductivity of 908 backedges. 0 proven. 884 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 05:22:58,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539756092] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 05:22:58,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 05:22:58,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 8] total 24 [2024-11-19 05:22:58,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729121332] [2024-11-19 05:22:58,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 05:22:58,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-19 05:22:58,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:22:58,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-19 05:22:58,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=370, Unknown=0, NotChecked=0, Total=552 [2024-11-19 05:22:58,452 INFO L87 Difference]: Start difference. First operand 2071 states and 2877 transitions. Second operand has 24 states, 24 states have (on average 78.83333333333333) internal successors, (1892), 24 states have internal predecessors, (1892), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-19 05:22:59,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 05:22:59,806 INFO L93 Difference]: Finished difference Result 4996 states and 6911 transitions. [2024-11-19 05:22:59,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-19 05:22:59,808 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 78.83333333333333) internal successors, (1892), 24 states have internal predecessors, (1892), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 700 [2024-11-19 05:22:59,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 05:22:59,850 INFO L225 Difference]: With dead ends: 4996 [2024-11-19 05:22:59,850 INFO L226 Difference]: Without dead ends: 4117 [2024-11-19 05:22:59,855 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1423 GetRequests, 1385 SyntacticMatches, 7 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=318, Invalid=738, Unknown=0, NotChecked=0, Total=1056 [2024-11-19 05:22:59,856 INFO L432 NwaCegarLoop]: 2707 mSDtfsCounter, 5720 mSDsluCounter, 27758 mSDsCounter, 0 mSdLazyCounter, 1157 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5759 SdHoareTripleChecker+Valid, 30465 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-19 05:22:59,856 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5759 Valid, 30465 Invalid, 1176 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 1157 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-19 05:22:59,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4117 states. [2024-11-19 05:22:59,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4117 to 3826. [2024-11-19 05:22:59,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3826 states, 3769 states have (on average 1.358981162111966) internal successors, (5122), 3774 states have internal predecessors, (5122), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (51), 48 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-19 05:22:59,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3826 states to 3826 states and 5225 transitions. [2024-11-19 05:22:59,999 INFO L78 Accepts]: Start accepts. Automaton has 3826 states and 5225 transitions. Word has length 700 [2024-11-19 05:23:00,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 05:23:00,001 INFO L471 AbstractCegarLoop]: Abstraction has 3826 states and 5225 transitions. [2024-11-19 05:23:00,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 78.83333333333333) internal successors, (1892), 24 states have internal predecessors, (1892), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-19 05:23:00,003 INFO L276 IsEmpty]: Start isEmpty. Operand 3826 states and 5225 transitions. [2024-11-19 05:23:00,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1163 [2024-11-19 05:23:00,045 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 05:23:00,046 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:23:00,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 05:23:00,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 05:23:00,247 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 05:23:00,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:23:00,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1015195160, now seen corresponding path program 1 times [2024-11-19 05:23:00,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:23:00,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395498221] [2024-11-19 05:23:00,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:23:00,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:23:01,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:23:09,268 INFO L134 CoverageAnalysis]: Checked inductivity of 3911 backedges. 1851 proven. 896 refuted. 0 times theorem prover too weak. 1164 trivial. 0 not checked. [2024-11-19 05:23:09,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:23:09,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395498221] [2024-11-19 05:23:09,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395498221] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 05:23:09,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201683140] [2024-11-19 05:23:09,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:23:09,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 05:23:09,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 05:23:09,273 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) [2024-11-19 05:23:09,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 05:23:11,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:23:11,128 INFO L255 TraceCheckSpWp]: Trace formula consists of 5664 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 05:23:11,148 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 05:23:11,152 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 [2024-11-19 05:23:11,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-19 05:23:11,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-19 05:23:11,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-19 05:23:12,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-19 05:23:12,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3911 backedges. 1851 proven. 896 refuted. 0 times theorem prover too weak. 1164 trivial. 0 not checked. [2024-11-19 05:23:12,068 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 05:23:12,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3911 backedges. 1851 proven. 896 refuted. 0 times theorem prover too weak. 1164 trivial. 0 not checked. [2024-11-19 05:23:12,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201683140] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 05:23:12,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 05:23:12,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 8] total 25 [2024-11-19 05:23:12,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43487597] [2024-11-19 05:23:12,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 05:23:12,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 05:23:12,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:23:12,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 05:23:12,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=414, Unknown=0, NotChecked=0, Total=600 [2024-11-19 05:23:12,898 INFO L87 Difference]: Start difference. First operand 3826 states and 5225 transitions. Second operand has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-19 05:23:13,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 05:23:13,951 INFO L93 Difference]: Finished difference Result 6616 states and 9070 transitions. [2024-11-19 05:23:13,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-19 05:23:13,952 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 1162 [2024-11-19 05:23:13,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 05:23:13,973 INFO L225 Difference]: With dead ends: 6616 [2024-11-19 05:23:13,974 INFO L226 Difference]: Without dead ends: 4117 [2024-11-19 05:23:13,980 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2354 GetRequests, 2310 SyntacticMatches, 7 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=369, Invalid=1113, Unknown=0, NotChecked=0, Total=1482 [2024-11-19 05:23:13,981 INFO L432 NwaCegarLoop]: 2730 mSDtfsCounter, 5152 mSDsluCounter, 23161 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5190 SdHoareTripleChecker+Valid, 25891 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 05:23:13,981 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5190 Valid, 25891 Invalid, 940 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [33 Valid, 907 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 05:23:13,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4117 states. [2024-11-19 05:23:14,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4117 to 3829. [2024-11-19 05:23:14,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3829 states, 3772 states have (on average 1.357370095440085) internal successors, (5120), 3777 states have internal predecessors, (5120), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (51), 48 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-19 05:23:14,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3829 states to 3829 states and 5223 transitions. [2024-11-19 05:23:14,129 INFO L78 Accepts]: Start accepts. Automaton has 3829 states and 5223 transitions. Word has length 1162 [2024-11-19 05:23:14,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 05:23:14,130 INFO L471 AbstractCegarLoop]: Abstraction has 3829 states and 5223 transitions. [2024-11-19 05:23:14,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-19 05:23:14,131 INFO L276 IsEmpty]: Start isEmpty. Operand 3829 states and 5223 transitions. [2024-11-19 05:23:14,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1589 [2024-11-19 05:23:14,165 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 05:23:14,166 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:23:14,200 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 05:23:14,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-19 05:23:14,367 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 05:23:14,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:23:14,368 INFO L85 PathProgramCache]: Analyzing trace with hash 808856026, now seen corresponding path program 2 times [2024-11-19 05:23:14,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:23:14,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28315412] [2024-11-19 05:23:14,368 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 05:23:14,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:23:14,934 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 05:23:14,935 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 05:23:15,161 INFO L134 CoverageAnalysis]: Checked inductivity of 6668 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6668 trivial. 0 not checked. [2024-11-19 05:23:15,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:23:15,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28315412] [2024-11-19 05:23:15,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28315412] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:23:15,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:23:15,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 05:23:15,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360634619] [2024-11-19 05:23:15,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:23:15,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 05:23:15,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:23:15,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 05:23:15,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 05:23:15,165 INFO L87 Difference]: Start difference. First operand 3829 states and 5223 transitions. Second operand has 6 states, 6 states have (on average 40.333333333333336) internal successors, (242), 6 states have internal predecessors, (242), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 05:23:15,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 05:23:15,524 INFO L93 Difference]: Finished difference Result 4669 states and 6470 transitions. [2024-11-19 05:23:15,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 05:23:15,525 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 40.333333333333336) internal successors, (242), 6 states have internal predecessors, (242), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1588 [2024-11-19 05:23:15,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 05:23:15,536 INFO L225 Difference]: With dead ends: 4669 [2024-11-19 05:23:15,536 INFO L226 Difference]: Without dead ends: 3834 [2024-11-19 05:23:15,539 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 05:23:15,539 INFO L432 NwaCegarLoop]: 1246 mSDtfsCounter, 14 mSDsluCounter, 4683 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 5929 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 05:23:15,539 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 5929 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 05:23:15,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3834 states. [2024-11-19 05:23:15,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3834 to 3833. [2024-11-19 05:23:15,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3833 states, 3776 states have (on average 1.3572563559322033) internal successors, (5125), 3781 states have internal predecessors, (5125), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (51), 48 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-19 05:23:15,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3833 states to 3833 states and 5228 transitions. [2024-11-19 05:23:15,634 INFO L78 Accepts]: Start accepts. Automaton has 3833 states and 5228 transitions. Word has length 1588 [2024-11-19 05:23:15,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 05:23:15,636 INFO L471 AbstractCegarLoop]: Abstraction has 3833 states and 5228 transitions. [2024-11-19 05:23:15,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.333333333333336) internal successors, (242), 6 states have internal predecessors, (242), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 05:23:15,637 INFO L276 IsEmpty]: Start isEmpty. Operand 3833 states and 5228 transitions. [2024-11-19 05:23:15,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1590 [2024-11-19 05:23:15,656 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 05:23:15,656 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:23:15,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 05:23:15,657 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 05:23:15,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:23:15,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1509272450, now seen corresponding path program 1 times [2024-11-19 05:23:15,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:23:15,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039699379] [2024-11-19 05:23:15,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:23:15,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:23:16,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:23:19,462 INFO L134 CoverageAnalysis]: Checked inductivity of 6668 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6668 trivial. 0 not checked. [2024-11-19 05:23:19,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:23:19,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039699379] [2024-11-19 05:23:19,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039699379] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:23:19,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:23:19,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 05:23:19,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839016178] [2024-11-19 05:23:19,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:23:19,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 05:23:19,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:23:19,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 05:23:19,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 05:23:19,465 INFO L87 Difference]: Start difference. First operand 3833 states and 5228 transitions. Second operand has 8 states, 8 states have (on average 30.375) internal successors, (243), 8 states have internal predecessors, (243), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 05:23:19,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 05:23:19,851 INFO L93 Difference]: Finished difference Result 4674 states and 6476 transitions. [2024-11-19 05:23:19,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 05:23:19,852 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 30.375) internal successors, (243), 8 states have internal predecessors, (243), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1589 [2024-11-19 05:23:19,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 05:23:19,862 INFO L225 Difference]: With dead ends: 4674 [2024-11-19 05:23:19,862 INFO L226 Difference]: Without dead ends: 3844 [2024-11-19 05:23:19,863 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-19 05:23:19,864 INFO L432 NwaCegarLoop]: 1242 mSDtfsCounter, 26 mSDsluCounter, 5885 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 7127 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 05:23:19,864 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 7127 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 05:23:19,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3844 states. [2024-11-19 05:23:19,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3844 to 3837. [2024-11-19 05:23:19,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3837 states, 3780 states have (on average 1.3571428571428572) internal successors, (5130), 3785 states have internal predecessors, (5130), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (51), 48 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-19 05:23:19,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3837 states to 3837 states and 5233 transitions. [2024-11-19 05:23:19,961 INFO L78 Accepts]: Start accepts. Automaton has 3837 states and 5233 transitions. Word has length 1589 [2024-11-19 05:23:19,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 05:23:19,963 INFO L471 AbstractCegarLoop]: Abstraction has 3837 states and 5233 transitions. [2024-11-19 05:23:19,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 30.375) internal successors, (243), 8 states have internal predecessors, (243), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 05:23:19,963 INFO L276 IsEmpty]: Start isEmpty. Operand 3837 states and 5233 transitions. [2024-11-19 05:23:19,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1590 [2024-11-19 05:23:19,983 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 05:23:19,983 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:23:19,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 05:23:19,984 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 05:23:19,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:23:19,984 INFO L85 PathProgramCache]: Analyzing trace with hash -976445934, now seen corresponding path program 1 times [2024-11-19 05:23:19,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:23:19,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254313372] [2024-11-19 05:23:19,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:23:19,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:23:21,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:23:24,075 INFO L134 CoverageAnalysis]: Checked inductivity of 6668 backedges. 1320 proven. 1 refuted. 0 times theorem prover too weak. 5347 trivial. 0 not checked. [2024-11-19 05:23:24,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:23:24,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254313372] [2024-11-19 05:23:24,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254313372] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 05:23:24,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100001966] [2024-11-19 05:23:24,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:23:24,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 05:23:24,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 05:23:24,079 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 05:23:24,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 05:23:26,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:23:26,660 INFO L255 TraceCheckSpWp]: Trace formula consists of 7627 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-19 05:23:26,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 05:23:26,689 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 [2024-11-19 05:23:26,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-19 05:23:27,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-19 05:23:27,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-19 05:23:27,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-19 05:23:27,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-19 05:23:27,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-19 05:23:27,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-19 05:23:28,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-19 05:23:28,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-19 05:23:28,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-19 05:23:28,418 INFO L134 CoverageAnalysis]: Checked inductivity of 6668 backedges. 0 proven. 6644 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 05:23:28,418 INFO L311 TraceCheckSpWp]: Computing backward predicates...