./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-3.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 c9492eb5ff634b400a7a5ea3f7f2cefeb5465f9e5361bb81d240cec0c0c035af --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 14:47:51,877 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 14:47:51,971 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 14:47:51,977 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 14:47:51,977 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 14:47:52,002 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 14:47:52,003 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 14:47:52,004 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 14:47:52,005 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 14:47:52,006 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 14:47:52,006 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 14:47:52,006 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 14:47:52,007 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 14:47:52,009 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 14:47:52,009 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 14:47:52,009 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 14:47:52,010 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 14:47:52,010 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 14:47:52,010 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 14:47:52,010 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 14:47:52,011 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 14:47:52,011 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 14:47:52,011 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 14:47:52,012 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 14:47:52,012 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 14:47:52,012 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 14:47:52,012 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 14:47:52,012 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 14:47:52,013 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 14:47:52,013 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 14:47:52,013 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 14:47:52,013 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 14:47:52,014 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 14:47:52,014 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 14:47:52,015 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 14:47:52,015 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 14:47:52,016 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 14:47:52,016 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 14:47:52,016 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 14:47:52,016 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 14:47:52,016 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 14:47:52,017 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 14:47:52,017 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9492eb5ff634b400a7a5ea3f7f2cefeb5465f9e5361bb81d240cec0c0c035af [2024-10-24 14:47:52,284 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 14:47:52,307 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 14:47:52,310 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 14:47:52,311 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 14:47:52,312 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 14:47:52,313 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-3.i [2024-10-24 14:47:53,832 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 14:47:54,209 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 14:47:54,210 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-3.i [2024-10-24 14:47:54,237 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33609f771/c22682c7d99b48969598e65ec2491cce/FLAGd69007baf [2024-10-24 14:47:54,255 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33609f771/c22682c7d99b48969598e65ec2491cce [2024-10-24 14:47:54,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 14:47:54,262 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 14:47:54,263 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 14:47:54,264 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 14:47:54,269 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 14:47:54,270 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:47:54" (1/1) ... [2024-10-24 14:47:54,271 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1288e226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:54, skipping insertion in model container [2024-10-24 14:47:54,272 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:47:54" (1/1) ... [2024-10-24 14:47:54,343 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 14:47:54,841 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-3.i[33022,33035] [2024-10-24 14:47:55,082 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 14:47:55,094 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 14:47:55,138 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-3.i[33022,33035] [2024-10-24 14:47:55,231 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 14:47:55,267 INFO L204 MainTranslator]: Completed translation [2024-10-24 14:47:55,267 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:55 WrapperNode [2024-10-24 14:47:55,268 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 14:47:55,269 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 14:47:55,269 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 14:47:55,269 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 14:47:55,277 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:55" (1/1) ... [2024-10-24 14:47:55,343 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:55" (1/1) ... [2024-10-24 14:47:55,504 INFO L138 Inliner]: procedures = 177, calls = 605, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 3725 [2024-10-24 14:47:55,505 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 14:47:55,506 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 14:47:55,506 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 14:47:55,506 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 14:47:55,517 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:55" (1/1) ... [2024-10-24 14:47:55,517 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:55" (1/1) ... [2024-10-24 14:47:55,548 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:55" (1/1) ... [2024-10-24 14:47:55,730 INFO L175 MemorySlicer]: Split 574 memory accesses to 3 slices as follows [2, 106, 466]. 81 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 102 writes are split as follows [0, 4, 98]. [2024-10-24 14:47:55,734 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:55" (1/1) ... [2024-10-24 14:47:55,734 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:55" (1/1) ... [2024-10-24 14:47:55,800 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:55" (1/1) ... [2024-10-24 14:47:55,835 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:55" (1/1) ... [2024-10-24 14:47:55,845 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:55" (1/1) ... [2024-10-24 14:47:55,894 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:55" (1/1) ... [2024-10-24 14:47:55,919 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 14:47:55,920 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 14:47:55,921 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 14:47:55,922 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 14:47:55,923 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:55" (1/1) ... [2024-10-24 14:47:55,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 14:47:55,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:47:55,957 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 14:47:55,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 14:47:56,013 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2024-10-24 14:47:56,013 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2024-10-24 14:47:56,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 14:47:56,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 14:47:56,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-24 14:47:56,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-24 14:47:56,015 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-24 14:47:56,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 14:47:56,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 14:47:56,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-24 14:47:56,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-10-24 14:47:56,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-10-24 14:47:56,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-10-24 14:47:56,017 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-10-24 14:47:56,017 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-10-24 14:47:56,017 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-10-24 14:47:56,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 14:47:56,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 14:47:56,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-24 14:47:56,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-24 14:47:56,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-24 14:47:56,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-24 14:47:56,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-24 14:47:56,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-24 14:47:56,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-24 14:47:56,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 14:47:56,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 14:47:56,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 14:47:56,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 14:47:56,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 14:47:56,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 14:47:56,376 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 14:47:56,378 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 14:47:59,289 INFO L? ?]: Removed 823 outVars from TransFormulas that were not future-live. [2024-10-24 14:47:59,289 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 14:47:59,358 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 14:47:59,358 INFO L314 CfgBuilder]: Removed 168 assume(true) statements. [2024-10-24 14:47:59,359 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:47:59 BoogieIcfgContainer [2024-10-24 14:47:59,359 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 14:47:59,361 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 14:47:59,361 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 14:47:59,365 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 14:47:59,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:47:54" (1/3) ... [2024-10-24 14:47:59,366 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c6ec6fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:47:59, skipping insertion in model container [2024-10-24 14:47:59,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:55" (2/3) ... [2024-10-24 14:47:59,367 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c6ec6fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:47:59, skipping insertion in model container [2024-10-24 14:47:59,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:47:59" (3/3) ... [2024-10-24 14:47:59,368 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test10-3.i [2024-10-24 14:47:59,386 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 14:47:59,386 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 14:47:59,504 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 14:47:59,511 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;@4edaebd8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 14:47:59,511 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 14:47:59,522 INFO L276 IsEmpty]: Start isEmpty. Operand has 1086 states, 1067 states have (on average 1.6326148078725398) internal successors, (1742), 1072 states have internal predecessors, (1742), 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) [2024-10-24 14:47:59,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-24 14:47:59,531 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:47:59,533 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:47:59,533 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:47:59,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:47:59,540 INFO L85 PathProgramCache]: Analyzing trace with hash 599259722, now seen corresponding path program 1 times [2024-10-24 14:47:59,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:47:59,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294256023] [2024-10-24 14:47:59,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:47:59,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:47:59,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:59,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:47:59,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:47:59,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294256023] [2024-10-24 14:47:59,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294256023] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:47:59,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:47:59,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 14:47:59,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240347881] [2024-10-24 14:47:59,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:47:59,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 14:47:59,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:47:59,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 14:47:59,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 14:47:59,801 INFO L87 Difference]: Start difference. First operand has 1086 states, 1067 states have (on average 1.6326148078725398) internal successors, (1742), 1072 states have internal predecessors, (1742), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:47:59,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:47:59,935 INFO L93 Difference]: Finished difference Result 2171 states and 3547 transitions. [2024-10-24 14:47:59,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 14:47:59,938 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (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 12 [2024-10-24 14:47:59,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:47:59,962 INFO L225 Difference]: With dead ends: 2171 [2024-10-24 14:47:59,963 INFO L226 Difference]: Without dead ends: 1023 [2024-10-24 14:47:59,971 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 14:47:59,975 INFO L432 NwaCegarLoop]: 1589 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1589 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 14:47:59,976 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1589 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 14:47:59,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2024-10-24 14:48:00,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 1023. [2024-10-24 14:48:00,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1023 states, 1005 states have (on average 1.4736318407960198) internal successors, (1481), 1010 states have internal predecessors, (1481), 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) [2024-10-24 14:48:00,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1508 transitions. [2024-10-24 14:48:00,127 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1508 transitions. Word has length 12 [2024-10-24 14:48:00,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:48:00,127 INFO L471 AbstractCegarLoop]: Abstraction has 1023 states and 1508 transitions. [2024-10-24 14:48:00,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:48:00,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1508 transitions. [2024-10-24 14:48:00,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-24 14:48:00,137 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:48:00,138 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:48:00,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 14:48:00,139 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:48:00,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:48:00,140 INFO L85 PathProgramCache]: Analyzing trace with hash 911090950, now seen corresponding path program 1 times [2024-10-24 14:48:00,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:48:00,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813305392] [2024-10-24 14:48:00,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:48:00,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:48:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:00,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:48:00,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:48:00,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813305392] [2024-10-24 14:48:00,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813305392] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:48:00,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:48:00,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 14:48:00,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384940946] [2024-10-24 14:48:00,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:48:00,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:48:00,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:48:00,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:48:00,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:48:00,599 INFO L87 Difference]: Start difference. First operand 1023 states and 1508 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:48:00,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:48:00,828 INFO L93 Difference]: Finished difference Result 2042 states and 3012 transitions. [2024-10-24 14:48:00,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 14:48:00,829 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 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 67 [2024-10-24 14:48:00,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:48:00,840 INFO L225 Difference]: With dead ends: 2042 [2024-10-24 14:48:00,840 INFO L226 Difference]: Without dead ends: 1409 [2024-10-24 14:48:00,843 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 14:48:00,846 INFO L432 NwaCegarLoop]: 1587 mSDtfsCounter, 548 mSDsluCounter, 3024 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 4611 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 14:48:00,846 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [554 Valid, 4611 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 14:48:00,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1409 states. [2024-10-24 14:48:00,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 1025. [2024-10-24 14:48:00,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1025 states, 1007 states have (on average 1.4726911618669314) internal successors, (1483), 1012 states have internal predecessors, (1483), 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) [2024-10-24 14:48:00,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1510 transitions. [2024-10-24 14:48:00,890 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1510 transitions. Word has length 67 [2024-10-24 14:48:00,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:48:00,891 INFO L471 AbstractCegarLoop]: Abstraction has 1025 states and 1510 transitions. [2024-10-24 14:48:00,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:48:00,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1510 transitions. [2024-10-24 14:48:00,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-10-24 14:48:00,898 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:48:00,898 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] [2024-10-24 14:48:00,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 14:48:00,899 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:48:00,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:48:00,900 INFO L85 PathProgramCache]: Analyzing trace with hash 2132763725, now seen corresponding path program 1 times [2024-10-24 14:48:00,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:48:00,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370075795] [2024-10-24 14:48:00,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:48:00,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:48:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:01,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:48:01,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:48:01,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370075795] [2024-10-24 14:48:01,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370075795] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:48:01,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:48:01,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 14:48:01,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952842171] [2024-10-24 14:48:01,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:48:01,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:48:01,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:48:01,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:48:01,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:48:01,574 INFO L87 Difference]: Start difference. First operand 1025 states and 1510 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:48:01,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:48:01,774 INFO L93 Difference]: Finished difference Result 2431 states and 3576 transitions. [2024-10-24 14:48:01,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 14:48:01,775 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 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 144 [2024-10-24 14:48:01,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:48:01,782 INFO L225 Difference]: With dead ends: 2431 [2024-10-24 14:48:01,782 INFO L226 Difference]: Without dead ends: 1409 [2024-10-24 14:48:01,785 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 14:48:01,787 INFO L432 NwaCegarLoop]: 1548 mSDtfsCounter, 544 mSDsluCounter, 2985 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 4533 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 14:48:01,788 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 4533 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 14:48:01,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1409 states. [2024-10-24 14:48:01,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 1028. [2024-10-24 14:48:01,814 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) [2024-10-24 14:48:01,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1513 transitions. [2024-10-24 14:48:01,819 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1513 transitions. Word has length 144 [2024-10-24 14:48:01,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:48:01,819 INFO L471 AbstractCegarLoop]: Abstraction has 1028 states and 1513 transitions. [2024-10-24 14:48:01,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:48:01,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1513 transitions. [2024-10-24 14:48:01,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-10-24 14:48:01,825 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:48:01,825 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] [2024-10-24 14:48:01,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 14:48:01,826 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:48:01,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:48:01,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1900156445, now seen corresponding path program 1 times [2024-10-24 14:48:01,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:48:01,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811744131] [2024-10-24 14:48:01,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:48:01,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:48:01,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:02,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:48:02,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:48:02,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811744131] [2024-10-24 14:48:02,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811744131] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:48:02,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:48:02,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 14:48:02,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308811331] [2024-10-24 14:48:02,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:48:02,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:48:02,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:48:02,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:48:02,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:48:02,293 INFO L87 Difference]: Start difference. First operand 1028 states and 1513 transitions. Second operand has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:48:02,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:48:02,393 INFO L93 Difference]: Finished difference Result 2008 states and 2954 transitions. [2024-10-24 14:48:02,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 14:48:02,394 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 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 215 [2024-10-24 14:48:02,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:48:02,398 INFO L225 Difference]: With dead ends: 2008 [2024-10-24 14:48:02,399 INFO L226 Difference]: Without dead ends: 986 [2024-10-24 14:48:02,401 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 14:48:02,402 INFO L432 NwaCegarLoop]: 1403 mSDtfsCounter, 30 mSDsluCounter, 2789 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 4192 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 14:48:02,402 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 4192 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 14:48:02,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2024-10-24 14:48:02,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 986. [2024-10-24 14:48:02,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 986 states, 968 states have (on average 1.4555785123966942) internal successors, (1409), 973 states have internal predecessors, (1409), 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) [2024-10-24 14:48:02,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1436 transitions. [2024-10-24 14:48:02,434 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1436 transitions. Word has length 215 [2024-10-24 14:48:02,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:48:02,435 INFO L471 AbstractCegarLoop]: Abstraction has 986 states and 1436 transitions. [2024-10-24 14:48:02,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:48:02,435 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1436 transitions. [2024-10-24 14:48:02,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-10-24 14:48:02,438 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:48:02,438 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] [2024-10-24 14:48:02,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 14:48:02,439 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:48:02,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:48:02,439 INFO L85 PathProgramCache]: Analyzing trace with hash -648922665, now seen corresponding path program 1 times [2024-10-24 14:48:02,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:48:02,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541812071] [2024-10-24 14:48:02,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:48:02,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:48:02,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:02,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:48:02,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:48:02,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541812071] [2024-10-24 14:48:02,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541812071] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:48:02,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:48:02,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 14:48:02,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334523797] [2024-10-24 14:48:02,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:48:02,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 14:48:02,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:48:02,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 14:48:02,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 14:48:02,717 INFO L87 Difference]: Start difference. First operand 986 states and 1436 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:48:02,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:48:02,814 INFO L93 Difference]: Finished difference Result 2497 states and 3649 transitions. [2024-10-24 14:48:02,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 14:48:02,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 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 215 [2024-10-24 14:48:02,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:48:02,822 INFO L225 Difference]: With dead ends: 2497 [2024-10-24 14:48:02,822 INFO L226 Difference]: Without dead ends: 1517 [2024-10-24 14:48:02,825 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 14:48:02,827 INFO L432 NwaCegarLoop]: 1420 mSDtfsCounter, 716 mSDsluCounter, 1403 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 2823 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 14:48:02,828 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 2823 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 14:48:02,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1517 states. [2024-10-24 14:48:02,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1517 to 1358. [2024-10-24 14:48:02,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1358 states, 1338 states have (on average 1.4581464872944694) internal successors, (1951), 1343 states have internal predecessors, (1951), 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) [2024-10-24 14:48:02,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 1982 transitions. [2024-10-24 14:48:02,874 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 1982 transitions. Word has length 215 [2024-10-24 14:48:02,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:48:02,876 INFO L471 AbstractCegarLoop]: Abstraction has 1358 states and 1982 transitions. [2024-10-24 14:48:02,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:48:02,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 1982 transitions. [2024-10-24 14:48:02,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-10-24 14:48:02,882 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:48:02,883 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:48:02,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 14:48:02,883 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:48:02,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:48:02,888 INFO L85 PathProgramCache]: Analyzing trace with hash -807539942, now seen corresponding path program 1 times [2024-10-24 14:48:02,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:48:02,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47459592] [2024-10-24 14:48:02,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:48:02,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:48:03,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:03,491 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:48:03,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:03,496 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 14:48:03,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:03,500 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:48:03,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:48:03,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47459592] [2024-10-24 14:48:03,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47459592] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:48:03,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:48:03,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 14:48:03,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422832541] [2024-10-24 14:48:03,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:48:03,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 14:48:03,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:48:03,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 14:48:03,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 14:48:03,503 INFO L87 Difference]: Start difference. First operand 1358 states and 1982 transitions. Second operand has 5 states, 5 states have (on average 44.0) internal successors, (220), 4 states have internal predecessors, (220), 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) [2024-10-24 14:48:03,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:48:03,975 INFO L93 Difference]: Finished difference Result 2585 states and 3784 transitions. [2024-10-24 14:48:03,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 14:48:03,976 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.0) internal successors, (220), 4 states have internal predecessors, (220), 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 228 [2024-10-24 14:48:03,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:48:03,983 INFO L225 Difference]: With dead ends: 2585 [2024-10-24 14:48:03,984 INFO L226 Difference]: Without dead ends: 1318 [2024-10-24 14:48:03,986 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-24 14:48:03,987 INFO L432 NwaCegarLoop]: 1297 mSDtfsCounter, 51 mSDsluCounter, 3741 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 5038 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 14:48:03,987 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 5038 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 14:48:03,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2024-10-24 14:48:04,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1316. [2024-10-24 14:48:04,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1316 states, 1296 states have (on average 1.4459876543209877) internal successors, (1874), 1301 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) [2024-10-24 14:48:04,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 1905 transitions. [2024-10-24 14:48:04,024 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 1905 transitions. Word has length 228 [2024-10-24 14:48:04,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:48:04,026 INFO L471 AbstractCegarLoop]: Abstraction has 1316 states and 1905 transitions. [2024-10-24 14:48:04,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.0) internal successors, (220), 4 states have internal predecessors, (220), 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) [2024-10-24 14:48:04,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 1905 transitions. [2024-10-24 14:48:04,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-10-24 14:48:04,029 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:48:04,029 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:48:04,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 14:48:04,030 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:48:04,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:48:04,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1183346906, now seen corresponding path program 1 times [2024-10-24 14:48:04,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:48:04,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922460230] [2024-10-24 14:48:04,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:48:04,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:48:04,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:04,411 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:48:04,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:04,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 14:48:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:04,425 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:48:04,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:48:04,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922460230] [2024-10-24 14:48:04,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922460230] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:48:04,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:48:04,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 14:48:04,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754121728] [2024-10-24 14:48:04,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:48:04,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:48:04,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:48:04,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:48:04,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:48:04,430 INFO L87 Difference]: Start difference. First operand 1316 states and 1905 transitions. Second operand has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 states have internal predecessors, (220), 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) [2024-10-24 14:48:04,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:48:04,926 INFO L93 Difference]: Finished difference Result 2543 states and 3696 transitions. [2024-10-24 14:48:04,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 14:48:04,927 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 states have internal predecessors, (220), 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 228 [2024-10-24 14:48:04,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:48:04,937 INFO L225 Difference]: With dead ends: 2543 [2024-10-24 14:48:04,937 INFO L226 Difference]: Without dead ends: 1318 [2024-10-24 14:48:04,940 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:48:04,941 INFO L432 NwaCegarLoop]: 1310 mSDtfsCounter, 22 mSDsluCounter, 2472 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3782 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 14:48:04,942 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3782 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 14:48:04,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2024-10-24 14:48:04,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1316. [2024-10-24 14:48:04,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1316 states, 1296 states have (on average 1.4436728395061729) internal successors, (1871), 1301 states have internal predecessors, (1871), 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) [2024-10-24 14:48:04,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 1902 transitions. [2024-10-24 14:48:04,982 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 1902 transitions. Word has length 228 [2024-10-24 14:48:04,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:48:04,982 INFO L471 AbstractCegarLoop]: Abstraction has 1316 states and 1902 transitions. [2024-10-24 14:48:04,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 states have internal predecessors, (220), 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) [2024-10-24 14:48:04,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 1902 transitions. [2024-10-24 14:48:04,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-10-24 14:48:04,987 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:48:04,987 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:48:04,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 14:48:04,987 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:48:04,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:48:04,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1384475428, now seen corresponding path program 1 times [2024-10-24 14:48:04,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:48:04,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731135826] [2024-10-24 14:48:04,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:48:04,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:48:05,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:05,327 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:48:05,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:05,333 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 14:48:05,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:05,341 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:48:05,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:48:05,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731135826] [2024-10-24 14:48:05,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731135826] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:48:05,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:48:05,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 14:48:05,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591002415] [2024-10-24 14:48:05,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:48:05,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:48:05,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:48:05,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:48:05,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:48:05,344 INFO L87 Difference]: Start difference. First operand 1316 states and 1902 transitions. Second operand has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 states have internal predecessors, (220), 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) [2024-10-24 14:48:05,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:48:05,824 INFO L93 Difference]: Finished difference Result 3114 states and 4524 transitions. [2024-10-24 14:48:05,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 14:48:05,824 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 states have internal predecessors, (220), 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 228 [2024-10-24 14:48:05,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:48:05,834 INFO L225 Difference]: With dead ends: 3114 [2024-10-24 14:48:05,837 INFO L226 Difference]: Without dead ends: 1889 [2024-10-24 14:48:05,840 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:48:05,842 INFO L432 NwaCegarLoop]: 1314 mSDtfsCounter, 618 mSDsluCounter, 2482 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 3796 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 14:48:05,842 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 3796 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 14:48:05,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2024-10-24 14:48:05,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1882. [2024-10-24 14:48:05,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1882 states, 1856 states have (on average 1.4455818965517242) internal successors, (2683), 1861 states have internal predecessors, (2683), 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) [2024-10-24 14:48:05,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 2726 transitions. [2024-10-24 14:48:05,895 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 2726 transitions. Word has length 228 [2024-10-24 14:48:05,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:48:05,898 INFO L471 AbstractCegarLoop]: Abstraction has 1882 states and 2726 transitions. [2024-10-24 14:48:05,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 states have internal predecessors, (220), 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) [2024-10-24 14:48:05,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 2726 transitions. [2024-10-24 14:48:05,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2024-10-24 14:48:05,903 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:48:05,903 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 14:48:05,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 14:48:05,904 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:48:05,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:48:05,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1558041234, now seen corresponding path program 1 times [2024-10-24 14:48:05,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:48:05,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729059402] [2024-10-24 14:48:05,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:48:05,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:48:06,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:06,345 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:48:06,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:06,351 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 14:48:06,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:06,355 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-24 14:48:06,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:06,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-24 14:48:06,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:06,365 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-24 14:48:06,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:48:06,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729059402] [2024-10-24 14:48:06,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729059402] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:48:06,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:48:06,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 14:48:06,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941674162] [2024-10-24 14:48:06,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:48:06,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 14:48:06,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:48:06,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 14:48:06,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-24 14:48:06,371 INFO L87 Difference]: Start difference. First operand 1882 states and 2726 transitions. Second operand has 6 states, 6 states have (on average 37.5) internal successors, (225), 5 states have internal predecessors, (225), 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) [2024-10-24 14:48:07,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:48:07,872 INFO L93 Difference]: Finished difference Result 4067 states and 5941 transitions. [2024-10-24 14:48:07,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 14:48:07,873 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 37.5) internal successors, (225), 5 states have internal predecessors, (225), 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 241 [2024-10-24 14:48:07,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:48:07,883 INFO L225 Difference]: With dead ends: 4067 [2024-10-24 14:48:07,884 INFO L226 Difference]: Without dead ends: 2422 [2024-10-24 14:48:07,887 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:48:07,888 INFO L432 NwaCegarLoop]: 1354 mSDtfsCounter, 3558 mSDsluCounter, 2766 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3569 SdHoareTripleChecker+Valid, 4120 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-24 14:48:07,888 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3569 Valid, 4120 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-24 14:48:07,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2422 states. [2024-10-24 14:48:07,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2422 to 1453. [2024-10-24 14:48:07,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1453 states, 1432 states have (on average 1.4301675977653632) internal successors, (2048), 1437 states have internal predecessors, (2048), 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) [2024-10-24 14:48:07,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 2081 transitions. [2024-10-24 14:48:07,945 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 2081 transitions. Word has length 241 [2024-10-24 14:48:07,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:48:07,946 INFO L471 AbstractCegarLoop]: Abstraction has 1453 states and 2081 transitions. [2024-10-24 14:48:07,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.5) internal successors, (225), 5 states have internal predecessors, (225), 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) [2024-10-24 14:48:07,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 2081 transitions. [2024-10-24 14:48:07,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-10-24 14:48:07,950 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:48:07,950 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 14:48:07,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 14:48:07,951 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:48:07,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:48:07,951 INFO L85 PathProgramCache]: Analyzing trace with hash -690674394, now seen corresponding path program 1 times [2024-10-24 14:48:07,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:48:07,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876332740] [2024-10-24 14:48:07,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:48:07,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:48:08,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:08,406 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:48:08,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:08,411 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 14:48:08,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:08,414 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-24 14:48:08,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:08,416 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-24 14:48:08,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:08,419 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-24 14:48:08,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:48:08,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876332740] [2024-10-24 14:48:08,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876332740] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:48:08,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:48:08,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 14:48:08,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924052290] [2024-10-24 14:48:08,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:48:08,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 14:48:08,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:48:08,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 14:48:08,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 14:48:08,422 INFO L87 Difference]: Start difference. First operand 1453 states and 2081 transitions. Second operand has 5 states, 5 states have (on average 46.8) internal successors, (234), 4 states have internal predecessors, (234), 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) [2024-10-24 14:48:08,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:48:08,952 INFO L93 Difference]: Finished difference Result 2329 states and 3389 transitions. [2024-10-24 14:48:08,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 14:48:08,952 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 46.8) internal successors, (234), 4 states have internal predecessors, (234), 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 251 [2024-10-24 14:48:08,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:48:08,961 INFO L225 Difference]: With dead ends: 2329 [2024-10-24 14:48:08,961 INFO L226 Difference]: Without dead ends: 1413 [2024-10-24 14:48:08,964 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-24 14:48:08,965 INFO L432 NwaCegarLoop]: 1211 mSDtfsCounter, 51 mSDsluCounter, 3484 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 4695 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 14:48:08,966 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 4695 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 14:48:08,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2024-10-24 14:48:09,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 1411. [2024-10-24 14:48:09,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1411 states, 1390 states have (on average 1.4179856115107914) internal successors, (1971), 1395 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) [2024-10-24 14:48:09,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 2004 transitions. [2024-10-24 14:48:09,015 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 2004 transitions. Word has length 251 [2024-10-24 14:48:09,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:48:09,016 INFO L471 AbstractCegarLoop]: Abstraction has 1411 states and 2004 transitions. [2024-10-24 14:48:09,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.8) internal successors, (234), 4 states have internal predecessors, (234), 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) [2024-10-24 14:48:09,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 2004 transitions. [2024-10-24 14:48:09,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-10-24 14:48:09,019 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:48:09,020 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 14:48:09,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 14:48:09,020 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:48:09,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:48:09,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1469006888, now seen corresponding path program 1 times [2024-10-24 14:48:09,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:48:09,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964719362] [2024-10-24 14:48:09,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:48:09,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:48:09,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:09,397 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:48:09,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:09,401 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 14:48:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:09,405 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-24 14:48:09,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:09,408 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-24 14:48:09,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:09,412 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-24 14:48:09,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:48:09,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964719362] [2024-10-24 14:48:09,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964719362] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:48:09,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:48:09,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 14:48:09,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068279658] [2024-10-24 14:48:09,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:48:09,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:48:09,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:48:09,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:48:09,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:48:09,416 INFO L87 Difference]: Start difference. First operand 1411 states and 2004 transitions. Second operand has 4 states, 4 states have (on average 58.5) internal successors, (234), 3 states have internal predecessors, (234), 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) [2024-10-24 14:48:09,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:48:09,957 INFO L93 Difference]: Finished difference Result 2262 states and 3272 transitions. [2024-10-24 14:48:09,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 14:48:09,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 3 states have internal predecessors, (234), 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 251 [2024-10-24 14:48:09,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:48:09,964 INFO L225 Difference]: With dead ends: 2262 [2024-10-24 14:48:09,965 INFO L226 Difference]: Without dead ends: 1413 [2024-10-24 14:48:09,967 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:48:09,968 INFO L432 NwaCegarLoop]: 1225 mSDtfsCounter, 22 mSDsluCounter, 2299 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3524 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 14:48:09,968 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3524 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 14:48:09,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2024-10-24 14:48:10,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 1411. [2024-10-24 14:48:10,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1411 states, 1390 states have (on average 1.4158273381294963) internal successors, (1968), 1395 states have internal predecessors, (1968), 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) [2024-10-24 14:48:10,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 2001 transitions. [2024-10-24 14:48:10,011 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 2001 transitions. Word has length 251 [2024-10-24 14:48:10,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:48:10,012 INFO L471 AbstractCegarLoop]: Abstraction has 1411 states and 2001 transitions. [2024-10-24 14:48:10,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 3 states have internal predecessors, (234), 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) [2024-10-24 14:48:10,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 2001 transitions. [2024-10-24 14:48:10,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-10-24 14:48:10,015 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:48:10,015 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 14:48:10,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 14:48:10,016 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:48:10,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:48:10,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1367878620, now seen corresponding path program 1 times [2024-10-24 14:48:10,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:48:10,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141736071] [2024-10-24 14:48:10,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:48:10,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:48:10,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:11,327 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:48:11,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:11,331 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 14:48:11,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:11,335 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-24 14:48:11,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:11,339 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-24 14:48:11,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:11,345 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-24 14:48:11,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:48:11,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141736071] [2024-10-24 14:48:11,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141736071] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:48:11,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797192983] [2024-10-24 14:48:11,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:48:11,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:48:11,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:48:11,348 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 14:48:11,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 14:48:11,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:12,004 INFO L255 TraceCheckSpWp]: Trace formula consists of 1263 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 14:48:12,022 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:48:12,554 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 36 treesize of output 13 [2024-10-24 14:48:12,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-24 14:48:12,596 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-24 14:48:12,596 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 14:48:12,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797192983] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:48:12,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 14:48:12,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2024-10-24 14:48:12,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046301597] [2024-10-24 14:48:12,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:48:12,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 14:48:12,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:48:12,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 14:48:12,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-10-24 14:48:12,599 INFO L87 Difference]: Start difference. First operand 1411 states and 2001 transitions. Second operand has 7 states, 7 states have (on average 33.57142857142857) internal successors, (235), 7 states have internal predecessors, (235), 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) [2024-10-24 14:48:13,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:48:13,127 INFO L93 Difference]: Finished difference Result 2612 states and 3719 transitions. [2024-10-24 14:48:13,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 14:48:13,128 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 33.57142857142857) internal successors, (235), 7 states have internal predecessors, (235), 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 251 [2024-10-24 14:48:13,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:48:13,136 INFO L225 Difference]: With dead ends: 2612 [2024-10-24 14:48:13,137 INFO L226 Difference]: Without dead ends: 1734 [2024-10-24 14:48:13,139 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 246 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-10-24 14:48:13,139 INFO L432 NwaCegarLoop]: 1194 mSDtfsCounter, 1865 mSDsluCounter, 3878 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1873 SdHoareTripleChecker+Valid, 5072 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 14:48:13,139 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1873 Valid, 5072 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 14:48:13,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2024-10-24 14:48:13,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1580. [2024-10-24 14:48:13,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1580 states, 1549 states have (on average 1.4067140090380892) internal successors, (2179), 1558 states have internal predecessors, (2179), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (23), 17 states have call predecessors, (23), 23 states have call successors, (23) [2024-10-24 14:48:13,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2226 transitions. [2024-10-24 14:48:13,199 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2226 transitions. Word has length 251 [2024-10-24 14:48:13,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:48:13,200 INFO L471 AbstractCegarLoop]: Abstraction has 1580 states and 2226 transitions. [2024-10-24 14:48:13,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.57142857142857) internal successors, (235), 7 states have internal predecessors, (235), 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) [2024-10-24 14:48:13,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2226 transitions. [2024-10-24 14:48:13,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2024-10-24 14:48:13,205 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:48:13,205 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:48:13,228 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 14:48:13,410 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 [2024-10-24 14:48:13,410 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:48:13,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:48:13,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1545355179, now seen corresponding path program 1 times [2024-10-24 14:48:13,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:48:13,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257104293] [2024-10-24 14:48:13,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:48:13,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:48:13,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:14,959 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:48:14,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:14,964 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 14:48:14,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:14,968 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-24 14:48:14,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:14,972 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-24 14:48:14,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:14,977 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 74 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-24 14:48:14,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:48:14,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257104293] [2024-10-24 14:48:14,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257104293] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:48:14,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747528124] [2024-10-24 14:48:14,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:48:14,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:48:14,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:48:14,981 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 14:48:14,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 14:48:15,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:15,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 1643 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 14:48:15,879 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:48:15,886 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 15 treesize of output 1 [2024-10-24 14:48:16,304 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 36 treesize of output 13 [2024-10-24 14:48:16,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-24 14:48:16,325 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 74 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-24 14:48:16,325 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 14:48:16,677 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 74 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-24 14:48:16,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747528124] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 14:48:16,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 14:48:16,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 13 [2024-10-24 14:48:16,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396439479] [2024-10-24 14:48:16,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 14:48:16,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 14:48:16,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:48:16,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 14:48:16,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-10-24 14:48:16,682 INFO L87 Difference]: Start difference. First operand 1580 states and 2226 transitions. Second operand has 13 states, 13 states have (on average 37.23076923076923) internal successors, (484), 12 states have internal predecessors, (484), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-24 14:48:17,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:48:17,664 INFO L93 Difference]: Finished difference Result 3873 states and 5428 transitions. [2024-10-24 14:48:17,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 14:48:17,665 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 37.23076923076923) internal successors, (484), 12 states have internal predecessors, (484), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 328 [2024-10-24 14:48:17,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:48:17,676 INFO L225 Difference]: With dead ends: 3873 [2024-10-24 14:48:17,677 INFO L226 Difference]: Without dead ends: 2530 [2024-10-24 14:48:17,680 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 675 GetRequests, 652 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2024-10-24 14:48:17,681 INFO L432 NwaCegarLoop]: 1199 mSDtfsCounter, 2614 mSDsluCounter, 6648 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2652 SdHoareTripleChecker+Valid, 7847 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-24 14:48:17,682 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2652 Valid, 7847 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-24 14:48:17,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2530 states. [2024-10-24 14:48:17,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2530 to 2236. [2024-10-24 14:48:17,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2236 states, 2193 states have (on average 1.3812129502963977) internal successors, (3029), 2202 states have internal predecessors, (3029), 35 states have call successors, (35), 7 states have call predecessors, (35), 7 states have return successors, (34), 28 states have call predecessors, (34), 34 states have call successors, (34) [2024-10-24 14:48:17,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2236 states to 2236 states and 3098 transitions. [2024-10-24 14:48:17,769 INFO L78 Accepts]: Start accepts. Automaton has 2236 states and 3098 transitions. Word has length 328 [2024-10-24 14:48:17,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:48:17,770 INFO L471 AbstractCegarLoop]: Abstraction has 2236 states and 3098 transitions. [2024-10-24 14:48:17,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 37.23076923076923) internal successors, (484), 12 states have internal predecessors, (484), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-24 14:48:17,770 INFO L276 IsEmpty]: Start isEmpty. Operand 2236 states and 3098 transitions. [2024-10-24 14:48:17,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2024-10-24 14:48:17,786 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:48:17,787 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2024-10-24 14:48:17,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-24 14:48:17,987 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 [2024-10-24 14:48:17,988 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:48:17,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:48:17,989 INFO L85 PathProgramCache]: Analyzing trace with hash 2120778532, now seen corresponding path program 1 times [2024-10-24 14:48:17,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:48:17,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558203739] [2024-10-24 14:48:17,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:48:17,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:48:18,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:25,247 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:48:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:25,253 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 14:48:25,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:25,258 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-24 14:48:25,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:25,266 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-24 14:48:25,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:25,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 296 proven. 896 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-24 14:48:25,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:48:25,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558203739] [2024-10-24 14:48:25,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558203739] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:48:25,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285000775] [2024-10-24 14:48:25,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:48:25,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:48:25,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:48:25,281 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 14:48:25,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 14:48:26,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:26,763 INFO L255 TraceCheckSpWp]: Trace formula consists of 3764 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-24 14:48:26,780 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:48:26,787 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 15 treesize of output 1 [2024-10-24 14:48:27,127 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 36 treesize of output 13 [2024-10-24 14:48:27,321 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 36 treesize of output 13 [2024-10-24 14:48:27,537 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 36 treesize of output 13 [2024-10-24 14:48:27,739 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 36 treesize of output 13 [2024-10-24 14:48:27,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-24 14:48:27,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 296 proven. 896 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-24 14:48:27,760 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 14:48:28,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 296 proven. 896 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-24 14:48:28,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285000775] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 14:48:28,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 14:48:28,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8, 8] total 22 [2024-10-24 14:48:28,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834153009] [2024-10-24 14:48:28,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 14:48:28,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-24 14:48:28,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:48:28,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-24 14:48:28,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2024-10-24 14:48:28,676 INFO L87 Difference]: Start difference. First operand 2236 states and 3098 transitions. Second operand has 22 states, 22 states have (on average 62.63636363636363) internal successors, (1378), 21 states have internal predecessors, (1378), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-24 14:48:30,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:48:30,029 INFO L93 Difference]: Finished difference Result 5631 states and 7801 transitions. [2024-10-24 14:48:30,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-24 14:48:30,031 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 62.63636363636363) internal successors, (1378), 21 states have internal predecessors, (1378), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 772 [2024-10-24 14:48:30,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:48:30,059 INFO L225 Difference]: With dead ends: 5631 [2024-10-24 14:48:30,059 INFO L226 Difference]: Without dead ends: 4288 [2024-10-24 14:48:30,064 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1576 GetRequests, 1538 SyntacticMatches, 7 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=292, Invalid=764, Unknown=0, NotChecked=0, Total=1056 [2024-10-24 14:48:30,064 INFO L432 NwaCegarLoop]: 1199 mSDtfsCounter, 4830 mSDsluCounter, 12956 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4916 SdHoareTripleChecker+Valid, 14155 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-24 14:48:30,065 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4916 Valid, 14155 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-24 14:48:30,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4288 states. [2024-10-24 14:48:30,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4288 to 3994. [2024-10-24 14:48:30,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3994 states, 3927 states have (on average 1.35650623885918) internal successors, (5327), 3936 states have internal predecessors, (5327), 59 states have call successors, (59), 7 states have call predecessors, (59), 7 states have return successors, (58), 52 states have call predecessors, (58), 58 states have call successors, (58) [2024-10-24 14:48:30,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3994 states to 3994 states and 5444 transitions. [2024-10-24 14:48:30,197 INFO L78 Accepts]: Start accepts. Automaton has 3994 states and 5444 transitions. Word has length 772 [2024-10-24 14:48:30,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:48:30,198 INFO L471 AbstractCegarLoop]: Abstraction has 3994 states and 5444 transitions. [2024-10-24 14:48:30,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 62.63636363636363) internal successors, (1378), 21 states have internal predecessors, (1378), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-24 14:48:30,199 INFO L276 IsEmpty]: Start isEmpty. Operand 3994 states and 5444 transitions. [2024-10-24 14:48:30,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1661 [2024-10-24 14:48:30,286 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:48:30,287 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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, 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] [2024-10-24 14:48:30,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-24 14:48:30,488 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 [2024-10-24 14:48:30,488 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:48:30,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:48:30,489 INFO L85 PathProgramCache]: Analyzing trace with hash -358895806, now seen corresponding path program 2 times [2024-10-24 14:48:30,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:48:30,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894331591] [2024-10-24 14:48:30,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:48:30,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:48:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:38,132 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:48:38,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:38,139 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 14:48:38,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:38,143 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-24 14:48:38,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:38,145 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-24 14:48:38,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:38,153 INFO L134 CoverageAnalysis]: Checked inductivity of 7432 backedges. 2015 proven. 76 refuted. 0 times theorem prover too weak. 5341 trivial. 0 not checked. [2024-10-24 14:48:38,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:48:38,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894331591] [2024-10-24 14:48:38,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894331591] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:48:38,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362826104] [2024-10-24 14:48:38,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 14:48:38,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:48:38,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:48:38,156 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 14:48:38,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 14:48:39,514 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 14:48:39,514 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 14:48:39,521 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-24 14:48:39,541 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:48:39,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-24 14:48:40,201 INFO L134 CoverageAnalysis]: Checked inductivity of 7432 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7432 trivial. 0 not checked. [2024-10-24 14:48:40,202 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 14:48:40,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362826104] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:48:40,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 14:48:40,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2024-10-24 14:48:40,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071271317] [2024-10-24 14:48:40,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:48:40,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 14:48:40,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:48:40,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 14:48:40,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-10-24 14:48:40,206 INFO L87 Difference]: Start difference. First operand 3994 states and 5444 transitions. Second operand has 10 states, 10 states have (on average 24.1) internal successors, (241), 10 states have internal predecessors, (241), 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) [2024-10-24 14:48:41,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:48:41,275 INFO L93 Difference]: Finished difference Result 4854 states and 6721 transitions. [2024-10-24 14:48:41,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 14:48:41,275 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 24.1) internal successors, (241), 10 states have internal predecessors, (241), 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 1660 [2024-10-24 14:48:41,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:48:41,293 INFO L225 Difference]: With dead ends: 4854 [2024-10-24 14:48:41,293 INFO L226 Difference]: Without dead ends: 4000 [2024-10-24 14:48:41,296 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1684 GetRequests, 1661 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2024-10-24 14:48:41,297 INFO L432 NwaCegarLoop]: 1230 mSDtfsCounter, 401 mSDsluCounter, 6501 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 7731 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-24 14:48:41,297 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 7731 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-24 14:48:41,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4000 states. [2024-10-24 14:48:41,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4000 to 3997. [2024-10-24 14:48:41,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3997 states, 3930 states have (on average 1.356234096692112) internal successors, (5330), 3939 states have internal predecessors, (5330), 59 states have call successors, (59), 7 states have call predecessors, (59), 7 states have return successors, (58), 52 states have call predecessors, (58), 58 states have call successors, (58) [2024-10-24 14:48:41,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3997 states to 3997 states and 5447 transitions. [2024-10-24 14:48:41,420 INFO L78 Accepts]: Start accepts. Automaton has 3997 states and 5447 transitions. Word has length 1660 [2024-10-24 14:48:41,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:48:41,423 INFO L471 AbstractCegarLoop]: Abstraction has 3997 states and 5447 transitions. [2024-10-24 14:48:41,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.1) internal successors, (241), 10 states have internal predecessors, (241), 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) [2024-10-24 14:48:41,423 INFO L276 IsEmpty]: Start isEmpty. Operand 3997 states and 5447 transitions. [2024-10-24 14:48:41,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1661 [2024-10-24 14:48:41,445 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:48:41,446 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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, 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] [2024-10-24 14:48:41,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-24 14:48:41,646 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 [2024-10-24 14:48:41,647 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:48:41,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:48:41,647 INFO L85 PathProgramCache]: Analyzing trace with hash -781422278, now seen corresponding path program 1 times [2024-10-24 14:48:41,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:48:41,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740898396] [2024-10-24 14:48:41,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:48:41,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:48:42,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:44,028 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:48:44,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:44,031 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 14:48:44,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:44,033 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-24 14:48:44,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:44,035 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-24 14:48:44,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:44,040 INFO L134 CoverageAnalysis]: Checked inductivity of 7432 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7432 trivial. 0 not checked. [2024-10-24 14:48:44,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:48:44,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740898396] [2024-10-24 14:48:44,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740898396] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:48:44,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:48:44,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 14:48:44,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891463269] [2024-10-24 14:48:44,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:48:44,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 14:48:44,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:48:44,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 14:48:44,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 14:48:44,043 INFO L87 Difference]: Start difference. First operand 3997 states and 5447 transitions. Second operand has 5 states, 5 states have (on average 48.2) internal successors, (241), 4 states have internal predecessors, (241), 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) [2024-10-24 14:48:44,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:48:44,494 INFO L93 Difference]: Finished difference Result 4860 states and 6771 transitions. [2024-10-24 14:48:44,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 14:48:44,495 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.2) internal successors, (241), 4 states have internal predecessors, (241), 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 1660 [2024-10-24 14:48:44,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:48:44,510 INFO L225 Difference]: With dead ends: 4860 [2024-10-24 14:48:44,511 INFO L226 Difference]: Without dead ends: 3994 [2024-10-24 14:48:44,515 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-24 14:48:44,515 INFO L432 NwaCegarLoop]: 1210 mSDtfsCounter, 30 mSDsluCounter, 3480 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 4690 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 14:48:44,516 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 4690 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 14:48:44,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3994 states. [2024-10-24 14:48:44,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3994 to 3988. [2024-10-24 14:48:44,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3988 states, 3921 states have (on average 1.3565416985462893) internal successors, (5319), 3930 states have internal predecessors, (5319), 59 states have call successors, (59), 7 states have call predecessors, (59), 7 states have return successors, (58), 52 states have call predecessors, (58), 58 states have call successors, (58) [2024-10-24 14:48:44,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3988 states to 3988 states and 5436 transitions. [2024-10-24 14:48:44,628 INFO L78 Accepts]: Start accepts. Automaton has 3988 states and 5436 transitions. Word has length 1660 [2024-10-24 14:48:44,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:48:44,630 INFO L471 AbstractCegarLoop]: Abstraction has 3988 states and 5436 transitions. [2024-10-24 14:48:44,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.2) internal successors, (241), 4 states have internal predecessors, (241), 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) [2024-10-24 14:48:44,631 INFO L276 IsEmpty]: Start isEmpty. Operand 3988 states and 5436 transitions. [2024-10-24 14:48:44,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1662 [2024-10-24 14:48:44,653 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:48:44,654 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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, 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] [2024-10-24 14:48:44,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 14:48:44,655 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:48:44,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:48:44,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1256146458, now seen corresponding path program 1 times [2024-10-24 14:48:44,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:48:44,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638748117] [2024-10-24 14:48:44,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:48:44,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:48:46,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:52,024 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:48:52,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:52,027 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 14:48:52,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:52,029 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-24 14:48:52,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:52,030 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-24 14:48:52,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:52,037 INFO L134 CoverageAnalysis]: Checked inductivity of 7432 backedges. 2015 proven. 76 refuted. 0 times theorem prover too weak. 5341 trivial. 0 not checked. [2024-10-24 14:48:52,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:48:52,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638748117] [2024-10-24 14:48:52,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638748117] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:48:52,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166021639] [2024-10-24 14:48:52,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:48:52,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:48:52,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:48:52,042 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 14:48:52,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 14:48:54,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:48:54,574 INFO L255 TraceCheckSpWp]: Trace formula consists of 8007 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-10-24 14:48:54,616 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:48:54,939 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 36 treesize of output 13 [2024-10-24 14:48:55,114 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 36 treesize of output 13 [2024-10-24 14:48:55,315 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 36 treesize of output 13 [2024-10-24 14:48:55,513 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 36 treesize of output 13 [2024-10-24 14:48:55,819 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 36 treesize of output 13 [2024-10-24 14:48:55,980 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 36 treesize of output 13 [2024-10-24 14:48:56,144 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 36 treesize of output 13 [2024-10-24 14:48:56,330 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 36 treesize of output 13 [2024-10-24 14:48:56,492 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 36 treesize of output 13 [2024-10-24 14:48:56,653 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 36 treesize of output 13 [2024-10-24 14:48:56,761 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 36 treesize of output 13 [2024-10-24 14:48:56,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-24 14:48:56,804 INFO L134 CoverageAnalysis]: Checked inductivity of 7432 backedges. 42 proven. 7372 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-24 14:48:56,804 INFO L311 TraceCheckSpWp]: Computing backward predicates...