./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_OAT_test10-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ce6a3162e09155ad765d255c42023f1cbec9d995c66c63f43c14fadd8640484e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 14:51:09,044 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 14:51:09,116 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 14:51:09,122 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 14:51:09,122 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 14:51:09,161 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 14:51:09,164 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 14:51:09,164 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 14:51:09,165 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 14:51:09,166 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 14:51:09,166 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 14:51:09,166 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 14:51:09,168 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 14:51:09,169 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 14:51:09,170 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 14:51:09,170 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 14:51:09,170 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 14:51:09,171 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 14:51:09,171 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 14:51:09,171 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 14:51:09,172 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 14:51:09,175 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 14:51:09,176 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 14:51:09,176 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 14:51:09,176 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 14:51:09,177 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 14:51:09,177 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 14:51:09,177 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 14:51:09,178 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 14:51:09,178 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 14:51:09,178 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 14:51:09,179 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 14:51:09,179 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 14:51:09,180 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 14:51:09,180 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 14:51:09,180 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 14:51:09,181 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 14:51:09,181 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 14:51:09,181 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 14:51:09,181 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 14:51:09,181 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 14:51:09,182 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 14:51:09,182 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce6a3162e09155ad765d255c42023f1cbec9d995c66c63f43c14fadd8640484e [2024-10-24 14:51:09,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 14:51:09,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 14:51:09,476 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 14:51:09,477 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 14:51:09,478 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 14:51:09,479 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-1.i [2024-10-24 14:51:10,959 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 14:51:11,271 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 14:51:11,272 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-1.i [2024-10-24 14:51:11,297 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95ed5ea92/dea380c1f3cf4b0bacbdbb23530170ba/FLAG87dce6326 [2024-10-24 14:51:11,313 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95ed5ea92/dea380c1f3cf4b0bacbdbb23530170ba [2024-10-24 14:51:11,315 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 14:51:11,317 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 14:51:11,320 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 14:51:11,321 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 14:51:11,326 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 14:51:11,327 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:51:11" (1/1) ... [2024-10-24 14:51:11,329 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bd2494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:11, skipping insertion in model container [2024-10-24 14:51:11,329 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:51:11" (1/1) ... [2024-10-24 14:51:11,395 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 14:51:11,827 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_OAT_test10-1.i[33022,33035] [2024-10-24 14:51:12,045 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 14:51:12,055 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 14:51:12,094 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_OAT_test10-1.i[33022,33035] [2024-10-24 14:51:12,246 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 14:51:12,297 INFO L204 MainTranslator]: Completed translation [2024-10-24 14:51:12,298 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:12 WrapperNode [2024-10-24 14:51:12,298 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 14:51:12,300 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 14:51:12,300 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 14:51:12,300 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 14:51:12,306 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:12" (1/1) ... [2024-10-24 14:51:12,367 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:12" (1/1) ... [2024-10-24 14:51:12,495 INFO L138 Inliner]: procedures = 177, calls = 506, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 3410 [2024-10-24 14:51:12,496 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 14:51:12,497 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 14:51:12,497 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 14:51:12,497 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 14:51:12,508 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:12" (1/1) ... [2024-10-24 14:51:12,509 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:12" (1/1) ... [2024-10-24 14:51:12,531 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:12" (1/1) ... [2024-10-24 14:51:12,678 INFO L175 MemorySlicer]: Split 480 memory accesses to 3 slices as follows [2, 372, 106]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 86 writes are split as follows [0, 82, 4]. [2024-10-24 14:51:12,679 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:12" (1/1) ... [2024-10-24 14:51:12,679 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:12" (1/1) ... [2024-10-24 14:51:12,736 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:12" (1/1) ... [2024-10-24 14:51:12,761 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:12" (1/1) ... [2024-10-24 14:51:12,770 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:12" (1/1) ... [2024-10-24 14:51:12,781 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:12" (1/1) ... [2024-10-24 14:51:12,806 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 14:51:12,807 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 14:51:12,809 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 14:51:12,809 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 14:51:12,810 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:12" (1/1) ... [2024-10-24 14:51:12,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 14:51:12,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:51:12,849 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 14:51:12,853 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 14:51:12,897 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2024-10-24 14:51:12,898 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2024-10-24 14:51:12,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 14:51:12,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 14:51:12,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-24 14:51:12,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-24 14:51:12,899 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-24 14:51:12,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 14:51:12,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 14:51:12,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-24 14:51:12,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-10-24 14:51:12,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-10-24 14:51:12,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-10-24 14:51:12,901 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-10-24 14:51:12,901 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-10-24 14:51:12,901 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-10-24 14:51:12,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 14:51:12,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 14:51:12,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-24 14:51:12,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-24 14:51:12,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-24 14:51:12,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-24 14:51:12,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-24 14:51:12,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-24 14:51:12,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-24 14:51:12,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 14:51:12,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 14:51:12,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 14:51:12,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 14:51:12,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 14:51:12,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 14:51:13,190 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 14:51:13,192 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 14:51:15,894 INFO L? ?]: Removed 780 outVars from TransFormulas that were not future-live. [2024-10-24 14:51:15,894 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 14:51:15,960 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 14:51:15,962 INFO L314 CfgBuilder]: Removed 151 assume(true) statements. [2024-10-24 14:51:15,962 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:51:15 BoogieIcfgContainer [2024-10-24 14:51:15,962 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 14:51:15,965 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 14:51:15,965 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 14:51:15,968 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 14:51:15,968 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:51:11" (1/3) ... [2024-10-24 14:51:15,969 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11496fdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:51:15, skipping insertion in model container [2024-10-24 14:51:15,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:12" (2/3) ... [2024-10-24 14:51:15,969 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11496fdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:51:15, skipping insertion in model container [2024-10-24 14:51:15,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:51:15" (3/3) ... [2024-10-24 14:51:15,971 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test10-1.i [2024-10-24 14:51:15,987 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 14:51:15,987 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 14:51:16,085 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 14:51:16,093 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;@14ec50db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 14:51:16,093 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 14:51:16,103 INFO L276 IsEmpty]: Start isEmpty. Operand has 1025 states, 1006 states have (on average 1.6312127236580516) internal successors, (1641), 1011 states have internal predecessors, (1641), 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 14:51:16,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-24 14:51:16,113 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:51:16,113 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:51:16,114 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:51:16,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:51:16,121 INFO L85 PathProgramCache]: Analyzing trace with hash 76532746, now seen corresponding path program 1 times [2024-10-24 14:51:16,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:51:16,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966651307] [2024-10-24 14:51:16,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:51:16,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:51:16,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:16,308 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 14:51:16,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:51:16,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966651307] [2024-10-24 14:51:16,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966651307] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:51:16,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:51:16,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 14:51:16,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916925182] [2024-10-24 14:51:16,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:51:16,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 14:51:16,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:51:16,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 14:51:16,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 14:51:16,364 INFO L87 Difference]: Start difference. First operand has 1025 states, 1006 states have (on average 1.6312127236580516) internal successors, (1641), 1011 states have internal predecessors, (1641), 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 14:51:16,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:51:16,504 INFO L93 Difference]: Finished difference Result 2049 states and 3345 transitions. [2024-10-24 14:51:16,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 14:51:16,506 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 14:51:16,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:51:16,531 INFO L225 Difference]: With dead ends: 2049 [2024-10-24 14:51:16,532 INFO L226 Difference]: Without dead ends: 1023 [2024-10-24 14:51:16,541 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 14:51:16,545 INFO L432 NwaCegarLoop]: 1506 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1506 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 14:51:16,546 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1506 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 14:51:16,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2024-10-24 14:51:16,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 1023. [2024-10-24 14:51:16,648 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 14:51:16,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1508 transitions. [2024-10-24 14:51:16,657 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1508 transitions. Word has length 12 [2024-10-24 14:51:16,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:51:16,658 INFO L471 AbstractCegarLoop]: Abstraction has 1023 states and 1508 transitions. [2024-10-24 14:51:16,658 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 14:51:16,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1508 transitions. [2024-10-24 14:51:16,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-24 14:51:16,664 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:51:16,667 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 14:51:16,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 14:51:16,667 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:51:16,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:51:16,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1351663222, now seen corresponding path program 1 times [2024-10-24 14:51:16,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:51:16,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631398902] [2024-10-24 14:51:16,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:51:16,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:51:16,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:17,182 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 14:51:17,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:51:17,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631398902] [2024-10-24 14:51:17,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631398902] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:51:17,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:51:17,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 14:51:17,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528362454] [2024-10-24 14:51:17,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:51:17,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:51:17,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:51:17,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:51:17,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:51:17,188 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 14:51:17,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:51:17,408 INFO L93 Difference]: Finished difference Result 2042 states and 3012 transitions. [2024-10-24 14:51:17,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 14:51:17,409 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 14:51:17,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:51:17,418 INFO L225 Difference]: With dead ends: 2042 [2024-10-24 14:51:17,419 INFO L226 Difference]: Without dead ends: 1409 [2024-10-24 14:51:17,420 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 14:51:17,421 INFO L432 NwaCegarLoop]: 1544 mSDtfsCounter, 548 mSDsluCounter, 2981 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 4525 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 14:51:17,422 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [554 Valid, 4525 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 14:51:17,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1409 states. [2024-10-24 14:51:17,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 1025. [2024-10-24 14:51:17,451 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 14:51:17,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1510 transitions. [2024-10-24 14:51:17,456 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1510 transitions. Word has length 67 [2024-10-24 14:51:17,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:51:17,457 INFO L471 AbstractCegarLoop]: Abstraction has 1025 states and 1510 transitions. [2024-10-24 14:51:17,457 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 14:51:17,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1510 transitions. [2024-10-24 14:51:17,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-10-24 14:51:17,466 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:51:17,466 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 14:51:17,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 14:51:17,467 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:51:17,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:51:17,471 INFO L85 PathProgramCache]: Analyzing trace with hash 24463117, now seen corresponding path program 1 times [2024-10-24 14:51:17,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:51:17,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891308025] [2024-10-24 14:51:17,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:51:17,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:51:17,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:18,042 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 14:51:18,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:51:18,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891308025] [2024-10-24 14:51:18,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891308025] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:51:18,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:51:18,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 14:51:18,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76954510] [2024-10-24 14:51:18,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:51:18,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:51:18,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:51:18,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:51:18,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:51:18,048 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 14:51:18,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:51:18,232 INFO L93 Difference]: Finished difference Result 2431 states and 3576 transitions. [2024-10-24 14:51:18,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 14:51:18,233 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 14:51:18,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:51:18,241 INFO L225 Difference]: With dead ends: 2431 [2024-10-24 14:51:18,241 INFO L226 Difference]: Without dead ends: 1409 [2024-10-24 14:51:18,244 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 14:51:18,247 INFO L432 NwaCegarLoop]: 1501 mSDtfsCounter, 544 mSDsluCounter, 2938 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 4439 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 14:51:18,248 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 4439 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 14:51:18,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1409 states. [2024-10-24 14:51:18,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 1028. [2024-10-24 14:51:18,272 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 14:51:18,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1513 transitions. [2024-10-24 14:51:18,276 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1513 transitions. Word has length 144 [2024-10-24 14:51:18,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:51:18,276 INFO L471 AbstractCegarLoop]: Abstraction has 1028 states and 1513 transitions. [2024-10-24 14:51:18,277 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 14:51:18,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1513 transitions. [2024-10-24 14:51:18,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-10-24 14:51:18,283 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:51:18,284 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 14:51:18,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 14:51:18,284 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:51:18,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:51:18,286 INFO L85 PathProgramCache]: Analyzing trace with hash 532320615, now seen corresponding path program 1 times [2024-10-24 14:51:18,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:51:18,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863379313] [2024-10-24 14:51:18,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:51:18,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:51:18,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:18,737 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 14:51:18,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:51:18,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863379313] [2024-10-24 14:51:18,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863379313] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:51:18,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:51:18,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 14:51:18,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665076967] [2024-10-24 14:51:18,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:51:18,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:51:18,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:51:18,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:51:18,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:51:18,743 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 14:51:18,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:51:18,877 INFO L93 Difference]: Finished difference Result 2008 states and 2954 transitions. [2024-10-24 14:51:18,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 14:51:18,878 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 14:51:18,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:51:18,882 INFO L225 Difference]: With dead ends: 2008 [2024-10-24 14:51:18,882 INFO L226 Difference]: Without dead ends: 986 [2024-10-24 14:51:18,885 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 14:51:18,886 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 14:51:18,887 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 14:51:18,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2024-10-24 14:51:18,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 986. [2024-10-24 14:51:18,907 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 14:51:18,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1436 transitions. [2024-10-24 14:51:18,911 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1436 transitions. Word has length 215 [2024-10-24 14:51:18,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:51:18,913 INFO L471 AbstractCegarLoop]: Abstraction has 986 states and 1436 transitions. [2024-10-24 14:51:18,913 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 14:51:18,913 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1436 transitions. [2024-10-24 14:51:18,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-10-24 14:51:18,917 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:51:18,917 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 14:51:18,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 14:51:18,917 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:51:18,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:51:18,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1783554395, now seen corresponding path program 1 times [2024-10-24 14:51:18,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:51:18,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330278093] [2024-10-24 14:51:18,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:51:18,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:51:19,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:19,202 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 14:51:19,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:51:19,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330278093] [2024-10-24 14:51:19,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330278093] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:51:19,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:51:19,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 14:51:19,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370341791] [2024-10-24 14:51:19,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:51:19,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 14:51:19,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:51:19,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 14:51:19,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 14:51:19,206 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 14:51:19,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:51:19,320 INFO L93 Difference]: Finished difference Result 2497 states and 3649 transitions. [2024-10-24 14:51:19,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 14:51:19,321 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 14:51:19,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:51:19,327 INFO L225 Difference]: With dead ends: 2497 [2024-10-24 14:51:19,327 INFO L226 Difference]: Without dead ends: 1517 [2024-10-24 14:51:19,329 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 14:51:19,332 INFO L432 NwaCegarLoop]: 1420 mSDtfsCounter, 716 mSDsluCounter, 1403 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 14:51:19,332 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 14:51:19,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1517 states. [2024-10-24 14:51:19,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1517 to 1358. [2024-10-24 14:51:19,364 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 14:51:19,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 1982 transitions. [2024-10-24 14:51:19,369 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 1982 transitions. Word has length 215 [2024-10-24 14:51:19,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:51:19,369 INFO L471 AbstractCegarLoop]: Abstraction has 1358 states and 1982 transitions. [2024-10-24 14:51:19,370 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 14:51:19,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 1982 transitions. [2024-10-24 14:51:19,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-10-24 14:51:19,373 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:51:19,373 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 14:51:19,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 14:51:19,376 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:51:19,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:51:19,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1015366202, now seen corresponding path program 1 times [2024-10-24 14:51:19,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:51:19,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069656030] [2024-10-24 14:51:19,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:51:19,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:51:19,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:19,890 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:51:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:19,895 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 14:51:19,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:19,903 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 14:51:19,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:51:19,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069656030] [2024-10-24 14:51:19,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069656030] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:51:19,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:51:19,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 14:51:19,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592727480] [2024-10-24 14:51:19,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:51:19,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 14:51:19,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:51:19,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 14:51:19,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 14:51:19,914 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 14:51:20,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:51:20,461 INFO L93 Difference]: Finished difference Result 2585 states and 3784 transitions. [2024-10-24 14:51:20,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 14:51:20,462 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 14:51:20,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:51:20,468 INFO L225 Difference]: With dead ends: 2585 [2024-10-24 14:51:20,469 INFO L226 Difference]: Without dead ends: 1318 [2024-10-24 14:51:20,473 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 14:51:20,475 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, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 14:51:20,476 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 5038 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 14:51:20,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2024-10-24 14:51:20,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1316. [2024-10-24 14:51:20,510 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 14:51:20,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 1905 transitions. [2024-10-24 14:51:20,518 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 1905 transitions. Word has length 228 [2024-10-24 14:51:20,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:51:20,520 INFO L471 AbstractCegarLoop]: Abstraction has 1316 states and 1905 transitions. [2024-10-24 14:51:20,521 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 14:51:20,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 1905 transitions. [2024-10-24 14:51:20,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-10-24 14:51:20,524 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:51:20,524 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 14:51:20,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 14:51:20,525 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:51:20,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:51:20,526 INFO L85 PathProgramCache]: Analyzing trace with hash 639559238, now seen corresponding path program 1 times [2024-10-24 14:51:20,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:51:20,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721005538] [2024-10-24 14:51:20,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:51:20,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:51:20,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:20,872 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:51:20,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:20,878 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 14:51:20,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:20,885 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 14:51:20,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:51:20,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721005538] [2024-10-24 14:51:20,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721005538] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:51:20,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:51:20,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 14:51:20,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094365493] [2024-10-24 14:51:20,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:51:20,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:51:20,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:51:20,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:51:20,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:51:20,891 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 14:51:21,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:51:21,368 INFO L93 Difference]: Finished difference Result 2543 states and 3696 transitions. [2024-10-24 14:51:21,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 14:51:21,369 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 14:51:21,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:51:21,375 INFO L225 Difference]: With dead ends: 2543 [2024-10-24 14:51:21,375 INFO L226 Difference]: Without dead ends: 1318 [2024-10-24 14:51:21,377 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 14:51:21,378 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 14:51:21,378 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 14:51:21,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2024-10-24 14:51:21,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1316. [2024-10-24 14:51:21,401 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 14:51:21,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 1902 transitions. [2024-10-24 14:51:21,405 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 1902 transitions. Word has length 228 [2024-10-24 14:51:21,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:51:21,406 INFO L471 AbstractCegarLoop]: Abstraction has 1316 states and 1902 transitions. [2024-10-24 14:51:21,406 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 14:51:21,406 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 1902 transitions. [2024-10-24 14:51:21,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-10-24 14:51:21,409 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:51:21,409 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 14:51:21,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 14:51:21,409 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:51:21,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:51:21,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1087585724, now seen corresponding path program 1 times [2024-10-24 14:51:21,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:51:21,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640730221] [2024-10-24 14:51:21,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:51:21,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:51:21,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:21,739 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:51:21,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:21,744 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 14:51:21,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:21,750 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 14:51:21,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:51:21,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640730221] [2024-10-24 14:51:21,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640730221] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:51:21,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:51:21,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 14:51:21,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290595443] [2024-10-24 14:51:21,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:51:21,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:51:21,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:51:21,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:51:21,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:51:21,753 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 14:51:22,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:51:22,268 INFO L93 Difference]: Finished difference Result 3114 states and 4524 transitions. [2024-10-24 14:51:22,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 14:51:22,269 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 14:51:22,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:51:22,276 INFO L225 Difference]: With dead ends: 3114 [2024-10-24 14:51:22,277 INFO L226 Difference]: Without dead ends: 1889 [2024-10-24 14:51:22,279 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 14:51:22,280 INFO L432 NwaCegarLoop]: 1539 mSDtfsCounter, 617 mSDsluCounter, 2698 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 4237 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 14:51:22,280 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [625 Valid, 4237 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 14:51:22,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2024-10-24 14:51:22,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1882. [2024-10-24 14:51:22,318 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 14:51:22,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 2726 transitions. [2024-10-24 14:51:22,325 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 2726 transitions. Word has length 228 [2024-10-24 14:51:22,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:51:22,326 INFO L471 AbstractCegarLoop]: Abstraction has 1882 states and 2726 transitions. [2024-10-24 14:51:22,326 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 14:51:22,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 2726 transitions. [2024-10-24 14:51:22,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2024-10-24 14:51:22,329 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:51:22,330 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 14:51:22,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 14:51:22,330 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:51:22,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:51:22,331 INFO L85 PathProgramCache]: Analyzing trace with hash 2135614678, now seen corresponding path program 1 times [2024-10-24 14:51:22,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:51:22,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224147759] [2024-10-24 14:51:22,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:51:22,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:51:22,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:22,737 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:51:22,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:22,742 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 14:51:22,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:22,745 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-24 14:51:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:22,750 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-24 14:51:22,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:22,784 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 14:51:22,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:51:22,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224147759] [2024-10-24 14:51:22,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224147759] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:51:22,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:51:22,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 14:51:22,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890680717] [2024-10-24 14:51:22,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:51:22,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 14:51:22,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:51:22,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 14:51:22,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-24 14:51:22,791 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 14:51:23,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:51:23,794 INFO L93 Difference]: Finished difference Result 4067 states and 5941 transitions. [2024-10-24 14:51:23,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 14:51:23,795 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 14:51:23,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:51:23,804 INFO L225 Difference]: With dead ends: 4067 [2024-10-24 14:51:23,805 INFO L226 Difference]: Without dead ends: 2422 [2024-10-24 14:51:23,807 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 14:51:23,809 INFO L432 NwaCegarLoop]: 1354 mSDtfsCounter, 5658 mSDsluCounter, 2644 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5669 SdHoareTripleChecker+Valid, 3998 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-24 14:51:23,809 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5669 Valid, 3998 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-24 14:51:23,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2422 states. [2024-10-24 14:51:23,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2422 to 1453. [2024-10-24 14:51:23,859 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 14:51:23,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 2081 transitions. [2024-10-24 14:51:23,864 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 2081 transitions. Word has length 241 [2024-10-24 14:51:23,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:51:23,864 INFO L471 AbstractCegarLoop]: Abstraction has 1453 states and 2081 transitions. [2024-10-24 14:51:23,865 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 14:51:23,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 2081 transitions. [2024-10-24 14:51:23,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-10-24 14:51:23,868 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:51:23,868 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 14:51:23,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 14:51:23,869 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:51:23,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:51:23,869 INFO L85 PathProgramCache]: Analyzing trace with hash -550417174, now seen corresponding path program 1 times [2024-10-24 14:51:23,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:51:23,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132070856] [2024-10-24 14:51:23,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:51:23,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:51:24,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:24,300 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:51:24,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:24,305 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 14:51:24,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:24,308 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-24 14:51:24,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:24,310 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-24 14:51:24,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:24,315 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 14:51:24,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:51:24,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132070856] [2024-10-24 14:51:24,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132070856] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:51:24,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:51:24,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 14:51:24,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057162488] [2024-10-24 14:51:24,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:51:24,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 14:51:24,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:51:24,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 14:51:24,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 14:51:24,318 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 14:51:24,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:51:24,831 INFO L93 Difference]: Finished difference Result 2329 states and 3389 transitions. [2024-10-24 14:51:24,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 14:51:24,832 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 14:51:24,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:51:24,838 INFO L225 Difference]: With dead ends: 2329 [2024-10-24 14:51:24,838 INFO L226 Difference]: Without dead ends: 1413 [2024-10-24 14:51:24,839 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 14:51:24,840 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 14:51:24,840 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 14:51:24,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2024-10-24 14:51:24,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 1411. [2024-10-24 14:51:24,880 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 14:51:24,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 2004 transitions. [2024-10-24 14:51:24,885 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 2004 transitions. Word has length 251 [2024-10-24 14:51:24,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:51:24,885 INFO L471 AbstractCegarLoop]: Abstraction has 1411 states and 2004 transitions. [2024-10-24 14:51:24,886 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 14:51:24,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 2004 transitions. [2024-10-24 14:51:24,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-10-24 14:51:24,889 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:51:24,889 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 14:51:24,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 14:51:24,890 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:51:24,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:51:24,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1328749668, now seen corresponding path program 1 times [2024-10-24 14:51:24,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:51:24,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152284538] [2024-10-24 14:51:24,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:51:24,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:51:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:25,237 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:51:25,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:25,240 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 14:51:25,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:25,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-24 14:51:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:25,244 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-24 14:51:25,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:25,247 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 14:51:25,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:51:25,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152284538] [2024-10-24 14:51:25,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152284538] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:51:25,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:51:25,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 14:51:25,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247061168] [2024-10-24 14:51:25,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:51:25,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:51:25,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:51:25,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:51:25,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:51:25,250 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 14:51:25,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:51:25,735 INFO L93 Difference]: Finished difference Result 2262 states and 3272 transitions. [2024-10-24 14:51:25,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 14:51:25,736 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 14:51:25,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:51:25,742 INFO L225 Difference]: With dead ends: 2262 [2024-10-24 14:51:25,742 INFO L226 Difference]: Without dead ends: 1413 [2024-10-24 14:51:25,744 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 14:51:25,744 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, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 14:51:25,745 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3524 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 14:51:25,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2024-10-24 14:51:25,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 1411. [2024-10-24 14:51:25,781 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 14:51:25,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 2001 transitions. [2024-10-24 14:51:25,785 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 2001 transitions. Word has length 251 [2024-10-24 14:51:25,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:51:25,786 INFO L471 AbstractCegarLoop]: Abstraction has 1411 states and 2001 transitions. [2024-10-24 14:51:25,786 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 14:51:25,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 2001 transitions. [2024-10-24 14:51:25,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-10-24 14:51:25,789 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:51:25,789 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 14:51:25,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 14:51:25,790 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:51:25,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:51:25,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1508135840, now seen corresponding path program 1 times [2024-10-24 14:51:25,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:51:25,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507091578] [2024-10-24 14:51:25,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:51:25,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:51:26,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:26,944 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:51:26,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:26,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 14:51:26,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:27,002 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-24 14:51:27,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:27,008 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-24 14:51:27,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:27,012 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 14:51:27,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:51:27,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507091578] [2024-10-24 14:51:27,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507091578] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:51:27,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121747881] [2024-10-24 14:51:27,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:51:27,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:51:27,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:51:27,015 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 14:51:27,017 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 14:51:27,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:27,650 INFO L255 TraceCheckSpWp]: Trace formula consists of 1263 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 14:51:27,669 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:51:27,709 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 14:51:28,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-24 14:51:28,133 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 14:51:28,134 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 14:51:28,471 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 14:51:28,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121747881] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 14:51:28,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 14:51:28,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 13 [2024-10-24 14:51:28,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612580917] [2024-10-24 14:51:28,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 14:51:28,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 14:51:28,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:51:28,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 14:51:28,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-10-24 14:51:28,476 INFO L87 Difference]: Start difference. First operand 1411 states and 2001 transitions. Second operand has 13 states, 13 states have (on average 42.92307692307692) internal successors, (558), 12 states have internal predecessors, (558), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-24 14:51:29,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:51:29,807 INFO L93 Difference]: Finished difference Result 3237 states and 4580 transitions. [2024-10-24 14:51:29,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-24 14:51:29,809 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 42.92307692307692) internal successors, (558), 12 states have internal predecessors, (558), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 251 [2024-10-24 14:51:29,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:51:29,818 INFO L225 Difference]: With dead ends: 3237 [2024-10-24 14:51:29,819 INFO L226 Difference]: Without dead ends: 2359 [2024-10-24 14:51:29,821 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 497 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2024-10-24 14:51:29,822 INFO L432 NwaCegarLoop]: 1544 mSDtfsCounter, 2815 mSDsluCounter, 9113 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2846 SdHoareTripleChecker+Valid, 10657 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-24 14:51:29,823 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2846 Valid, 10657 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-24 14:51:29,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2359 states. [2024-10-24 14:51:29,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2359 to 2064. [2024-10-24 14:51:29,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2064 states, 2031 states have (on average 1.3870014771048744) internal successors, (2817), 2036 states have internal predecessors, (2817), 28 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2024-10-24 14:51:29,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2064 states to 2064 states and 2872 transitions. [2024-10-24 14:51:29,894 INFO L78 Accepts]: Start accepts. Automaton has 2064 states and 2872 transitions. Word has length 251 [2024-10-24 14:51:29,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:51:29,895 INFO L471 AbstractCegarLoop]: Abstraction has 2064 states and 2872 transitions. [2024-10-24 14:51:29,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 42.92307692307692) internal successors, (558), 12 states have internal predecessors, (558), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-24 14:51:29,895 INFO L276 IsEmpty]: Start isEmpty. Operand 2064 states and 2872 transitions. [2024-10-24 14:51:29,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2024-10-24 14:51:29,903 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:51:29,904 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:51:29,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-24 14:51:30,105 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 14:51:30,106 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:51:30,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:51:30,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1327197621, now seen corresponding path program 1 times [2024-10-24 14:51:30,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:51:30,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160449454] [2024-10-24 14:51:30,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:51:30,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:51:30,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:32,254 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:51:32,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:32,260 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 14:51:32,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:32,264 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-24 14:51:32,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:32,268 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-24 14:51:32,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:32,275 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 234 proven. 5 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2024-10-24 14:51:32,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:51:32,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160449454] [2024-10-24 14:51:32,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160449454] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:51:32,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480061717] [2024-10-24 14:51:32,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:51:32,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:51:32,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:51:32,279 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 14:51:32,280 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 14:51:33,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:33,396 INFO L255 TraceCheckSpWp]: Trace formula consists of 2403 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 14:51:33,410 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:51:33,420 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 14:51:33,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-24 14:51:33,789 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 234 proven. 5 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2024-10-24 14:51:33,789 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 14:51:34,100 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 234 proven. 5 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2024-10-24 14:51:34,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480061717] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 14:51:34,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 14:51:34,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2024-10-24 14:51:34,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976832205] [2024-10-24 14:51:34,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 14:51:34,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 14:51:34,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:51:34,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 14:51:34,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-24 14:51:34,103 INFO L87 Difference]: Start difference. First operand 2064 states and 2872 transitions. Second operand has 14 states, 14 states have (on average 46.07142857142857) internal successors, (645), 13 states have internal predecessors, (645), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-24 14:51:35,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:51:35,544 INFO L93 Difference]: Finished difference Result 3977 states and 5565 transitions. [2024-10-24 14:51:35,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 14:51:35,545 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 46.07142857142857) internal successors, (645), 13 states have internal predecessors, (645), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 482 [2024-10-24 14:51:35,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:51:35,559 INFO L225 Difference]: With dead ends: 3977 [2024-10-24 14:51:35,559 INFO L226 Difference]: Without dead ends: 2359 [2024-10-24 14:51:35,565 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 985 GetRequests, 960 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2024-10-24 14:51:35,566 INFO L432 NwaCegarLoop]: 1570 mSDtfsCounter, 1796 mSDsluCounter, 10365 mSDsCounter, 0 mSdLazyCounter, 937 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1826 SdHoareTripleChecker+Valid, 11935 SdHoareTripleChecker+Invalid, 964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-24 14:51:35,566 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1826 Valid, 11935 Invalid, 964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 937 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-24 14:51:35,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2359 states. [2024-10-24 14:51:35,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2359 to 2067. [2024-10-24 14:51:35,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2067 states, 2034 states have (on average 1.3854473942969519) internal successors, (2818), 2039 states have internal predecessors, (2818), 28 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2024-10-24 14:51:35,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2067 states to 2067 states and 2873 transitions. [2024-10-24 14:51:35,644 INFO L78 Accepts]: Start accepts. Automaton has 2067 states and 2873 transitions. Word has length 482 [2024-10-24 14:51:35,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:51:35,645 INFO L471 AbstractCegarLoop]: Abstraction has 2067 states and 2873 transitions. [2024-10-24 14:51:35,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 46.07142857142857) internal successors, (645), 13 states have internal predecessors, (645), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-24 14:51:35,646 INFO L276 IsEmpty]: Start isEmpty. Operand 2067 states and 2873 transitions. [2024-10-24 14:51:35,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 696 [2024-10-24 14:51:35,688 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:51:35,689 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:51:35,715 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 14:51:35,889 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 14:51:35,890 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:51:35,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:51:35,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1397164687, now seen corresponding path program 1 times [2024-10-24 14:51:35,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:51:35,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222584816] [2024-10-24 14:51:35,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:51:35,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:51:36,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:41,406 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:51:41,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:41,410 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 14:51:41,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:41,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-24 14:51:41,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:41,420 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-24 14:51:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:41,428 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 0 proven. 884 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-24 14:51:41,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:51:41,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222584816] [2024-10-24 14:51:41,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222584816] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:51:41,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445945230] [2024-10-24 14:51:41,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:51:41,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:51:41,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:51:41,432 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 14:51:41,433 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 14:51:42,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:42,678 INFO L255 TraceCheckSpWp]: Trace formula consists of 3384 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-24 14:51:42,695 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:51:42,699 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 14:51:42,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-24 14:51:43,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-24 14:51:43,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-24 14:51:43,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-24 14:51:43,538 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 0 proven. 884 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-24 14:51:43,539 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 14:51:44,271 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 0 proven. 884 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-24 14:51:44,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445945230] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 14:51:44,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 14:51:44,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 25 [2024-10-24 14:51:44,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797757219] [2024-10-24 14:51:44,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 14:51:44,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-24 14:51:44,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:51:44,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-24 14:51:44,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=416, Unknown=0, NotChecked=0, Total=600 [2024-10-24 14:51:44,278 INFO L87 Difference]: Start difference. First operand 2067 states and 2873 transitions. Second operand has 25 states, 25 states have (on average 75.6) internal successors, (1890), 24 states have internal predecessors, (1890), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-24 14:51:46,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:51:46,522 INFO L93 Difference]: Finished difference Result 4995 states and 6956 transitions. [2024-10-24 14:51:46,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-24 14:51:46,523 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 75.6) internal successors, (1890), 24 states have internal predecessors, (1890), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 695 [2024-10-24 14:51:46,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:51:46,550 INFO L225 Difference]: With dead ends: 4995 [2024-10-24 14:51:46,554 INFO L226 Difference]: Without dead ends: 4117 [2024-10-24 14:51:46,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1422 GetRequests, 1382 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=324, Invalid=866, Unknown=0, NotChecked=0, Total=1190 [2024-10-24 14:51:46,558 INFO L432 NwaCegarLoop]: 2678 mSDtfsCounter, 5239 mSDsluCounter, 25287 mSDsCounter, 0 mSdLazyCounter, 1738 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5318 SdHoareTripleChecker+Valid, 27965 SdHoareTripleChecker+Invalid, 1830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-24 14:51:46,558 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5318 Valid, 27965 Invalid, 1830 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [92 Valid, 1738 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-24 14:51:46,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4117 states. [2024-10-24 14:51:46,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4117 to 3822. [2024-10-24 14:51:46,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3822 states, 3765 states have (on average 1.3593625498007968) internal successors, (5118), 3770 states have internal predecessors, (5118), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (51), 48 states have call predecessors, (51), 51 states have call successors, (51) [2024-10-24 14:51:46,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3822 states to 3822 states and 5221 transitions. [2024-10-24 14:51:46,664 INFO L78 Accepts]: Start accepts. Automaton has 3822 states and 5221 transitions. Word has length 695 [2024-10-24 14:51:46,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:51:46,665 INFO L471 AbstractCegarLoop]: Abstraction has 3822 states and 5221 transitions. [2024-10-24 14:51:46,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 75.6) internal successors, (1890), 24 states have internal predecessors, (1890), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-24 14:51:46,666 INFO L276 IsEmpty]: Start isEmpty. Operand 3822 states and 5221 transitions. [2024-10-24 14:51:46,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1158 [2024-10-24 14:51:46,698 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:51:46,699 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2024-10-24 14:51:46,729 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 14:51:46,899 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 14:51:46,900 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:51:46,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:51:46,901 INFO L85 PathProgramCache]: Analyzing trace with hash -171854319, now seen corresponding path program 1 times [2024-10-24 14:51:46,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:51:46,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055174213] [2024-10-24 14:51:46,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:51:46,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:51:47,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:54,926 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:51:54,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:54,929 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 14:51:54,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:54,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-24 14:51:54,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:54,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-24 14:51:54,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:54,948 INFO L134 CoverageAnalysis]: Checked inductivity of 3905 backedges. 1851 proven. 896 refuted. 0 times theorem prover too weak. 1158 trivial. 0 not checked. [2024-10-24 14:51:54,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:51:54,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055174213] [2024-10-24 14:51:54,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055174213] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:51:54,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059521137] [2024-10-24 14:51:54,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:51:54,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:51:54,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:51:54,951 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 14:51:54,953 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 14:51:56,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:51:56,648 INFO L255 TraceCheckSpWp]: Trace formula consists of 5664 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-24 14:51:56,668 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:51:56,672 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 14:51:57,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-24 14:51:57,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-24 14:51:57,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-24 14:51:57,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-24 14:51:57,646 INFO L134 CoverageAnalysis]: Checked inductivity of 3905 backedges. 1851 proven. 896 refuted. 0 times theorem prover too weak. 1158 trivial. 0 not checked. [2024-10-24 14:51:57,647 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 14:51:58,392 INFO L134 CoverageAnalysis]: Checked inductivity of 3905 backedges. 1851 proven. 896 refuted. 0 times theorem prover too weak. 1158 trivial. 0 not checked. [2024-10-24 14:51:58,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059521137] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 14:51:58,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 14:51:58,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8, 8] total 26 [2024-10-24 14:51:58,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422920653] [2024-10-24 14:51:58,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 14:51:58,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-24 14:51:58,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:51:58,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-24 14:51:58,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=462, Unknown=0, NotChecked=0, Total=650 [2024-10-24 14:51:58,399 INFO L87 Difference]: Start difference. First operand 3822 states and 5221 transitions. Second operand has 26 states, 26 states have (on average 76.03846153846153) internal successors, (1977), 25 states have internal predecessors, (1977), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-24 14:52:00,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:52:00,512 INFO L93 Difference]: Finished difference Result 6614 states and 9114 transitions. [2024-10-24 14:52:00,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-24 14:52:00,513 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 76.03846153846153) internal successors, (1977), 25 states have internal predecessors, (1977), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 1157 [2024-10-24 14:52:00,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:52:00,534 INFO L225 Difference]: With dead ends: 6614 [2024-10-24 14:52:00,534 INFO L226 Difference]: Without dead ends: 4117 [2024-10-24 14:52:00,542 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2353 GetRequests, 2307 SyntacticMatches, 7 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=375, Invalid=1265, Unknown=0, NotChecked=0, Total=1640 [2024-10-24 14:52:00,543 INFO L432 NwaCegarLoop]: 2701 mSDtfsCounter, 4870 mSDsluCounter, 30212 mSDsCounter, 0 mSdLazyCounter, 1964 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4948 SdHoareTripleChecker+Valid, 32913 SdHoareTripleChecker+Invalid, 2062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-24 14:52:00,543 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4948 Valid, 32913 Invalid, 2062 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [98 Valid, 1964 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-24 14:52:00,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4117 states. [2024-10-24 14:52:00,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4117 to 3825. [2024-10-24 14:52:00,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3825 states, 3768 states have (on average 1.3577494692144374) internal successors, (5116), 3773 states have internal predecessors, (5116), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (51), 48 states have call predecessors, (51), 51 states have call successors, (51) [2024-10-24 14:52:00,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3825 states to 3825 states and 5219 transitions. [2024-10-24 14:52:00,653 INFO L78 Accepts]: Start accepts. Automaton has 3825 states and 5219 transitions. Word has length 1157 [2024-10-24 14:52:00,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:52:00,655 INFO L471 AbstractCegarLoop]: Abstraction has 3825 states and 5219 transitions. [2024-10-24 14:52:00,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 76.03846153846153) internal successors, (1977), 25 states have internal predecessors, (1977), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-24 14:52:00,656 INFO L276 IsEmpty]: Start isEmpty. Operand 3825 states and 5219 transitions. [2024-10-24 14:52:00,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1584 [2024-10-24 14:52:00,674 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:52:00,675 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:52:00,712 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 14:52:00,876 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 14:52:00,876 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:52:00,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:52:00,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1119255917, now seen corresponding path program 2 times [2024-10-24 14:52:00,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:52:00,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454893028] [2024-10-24 14:52:00,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:52:00,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:52:02,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:06,291 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:52:06,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:06,295 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 14:52:06,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:06,297 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-24 14:52:06,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:06,299 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-24 14:52:06,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:06,304 INFO L134 CoverageAnalysis]: Checked inductivity of 6662 backedges. 1320 proven. 1 refuted. 0 times theorem prover too weak. 5341 trivial. 0 not checked. [2024-10-24 14:52:06,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:52:06,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454893028] [2024-10-24 14:52:06,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454893028] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:52:06,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343105237] [2024-10-24 14:52:06,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 14:52:06,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:52:06,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:52:06,307 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 14:52:06,308 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 14:52:07,658 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 14:52:07,658 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 14:52:07,664 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-24 14:52:07,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:52:07,714 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 14:52:08,071 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 14:52:08,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 58 [2024-10-24 14:52:08,279 INFO L134 CoverageAnalysis]: Checked inductivity of 6662 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6662 trivial. 0 not checked. [2024-10-24 14:52:08,279 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 14:52:08,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343105237] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:52:08,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 14:52:08,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 16 [2024-10-24 14:52:08,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423464389] [2024-10-24 14:52:08,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:52:08,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 14:52:08,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:52:08,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 14:52:08,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2024-10-24 14:52:08,285 INFO L87 Difference]: Start difference. First operand 3825 states and 5219 transitions. Second operand has 10 states, 10 states have (on average 24.0) internal successors, (240), 10 states have internal predecessors, (240), 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 14:52:09,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:52:09,315 INFO L93 Difference]: Finished difference Result 4670 states and 6474 transitions. [2024-10-24 14:52:09,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 14:52:09,315 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 24.0) internal successors, (240), 10 states have internal predecessors, (240), 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 1583 [2024-10-24 14:52:09,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:52:09,333 INFO L225 Difference]: With dead ends: 4670 [2024-10-24 14:52:09,333 INFO L226 Difference]: Without dead ends: 3831 [2024-10-24 14:52:09,338 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1605 GetRequests, 1584 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2024-10-24 14:52:09,340 INFO L432 NwaCegarLoop]: 1230 mSDtfsCounter, 389 mSDsluCounter, 8718 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 9948 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-24 14:52:09,340 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 9948 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-24 14:52:09,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3831 states. [2024-10-24 14:52:09,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3831 to 3828. [2024-10-24 14:52:09,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3828 states, 3771 states have (on average 1.3574648634314506) internal successors, (5119), 3776 states have internal predecessors, (5119), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (51), 48 states have call predecessors, (51), 51 states have call successors, (51) [2024-10-24 14:52:09,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3828 states to 3828 states and 5222 transitions. [2024-10-24 14:52:09,443 INFO L78 Accepts]: Start accepts. Automaton has 3828 states and 5222 transitions. Word has length 1583 [2024-10-24 14:52:09,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:52:09,446 INFO L471 AbstractCegarLoop]: Abstraction has 3828 states and 5222 transitions. [2024-10-24 14:52:09,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.0) internal successors, (240), 10 states have internal predecessors, (240), 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 14:52:09,446 INFO L276 IsEmpty]: Start isEmpty. Operand 3828 states and 5222 transitions. [2024-10-24 14:52:09,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1584 [2024-10-24 14:52:09,465 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:52:09,466 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:52:09,482 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-24 14:52:09,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-24 14:52:09,667 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:52:09,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:52:09,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1541782389, now seen corresponding path program 1 times [2024-10-24 14:52:09,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:52:09,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610850833] [2024-10-24 14:52:09,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:52:09,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:52:10,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:11,649 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:52:11,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:11,652 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 14:52:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:11,653 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-24 14:52:11,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:11,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-24 14:52:11,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:11,660 INFO L134 CoverageAnalysis]: Checked inductivity of 6662 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6662 trivial. 0 not checked. [2024-10-24 14:52:11,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:52:11,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610850833] [2024-10-24 14:52:11,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610850833] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:52:11,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:52:11,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 14:52:11,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203877310] [2024-10-24 14:52:11,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:52:11,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 14:52:11,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:52:11,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 14:52:11,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 14:52:11,663 INFO L87 Difference]: Start difference. First operand 3828 states and 5222 transitions. Second operand has 5 states, 5 states have (on average 48.0) internal successors, (240), 4 states have internal predecessors, (240), 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 14:52:12,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:52:12,029 INFO L93 Difference]: Finished difference Result 4674 states and 6519 transitions. [2024-10-24 14:52:12,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 14:52:12,030 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.0) internal successors, (240), 4 states have internal predecessors, (240), 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 1583 [2024-10-24 14:52:12,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:52:12,041 INFO L225 Difference]: With dead ends: 4674 [2024-10-24 14:52:12,041 INFO L226 Difference]: Without dead ends: 3823 [2024-10-24 14:52:12,044 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 14:52:12,045 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, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 14:52:12,045 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 4690 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 14:52:12,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3823 states. [2024-10-24 14:52:12,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3823 to 3819. [2024-10-24 14:52:12,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3819 states, 3762 states have (on average 1.3577884104199893) internal successors, (5108), 3767 states have internal predecessors, (5108), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (51), 48 states have call predecessors, (51), 51 states have call successors, (51) [2024-10-24 14:52:12,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3819 states to 3819 states and 5211 transitions. [2024-10-24 14:52:12,141 INFO L78 Accepts]: Start accepts. Automaton has 3819 states and 5211 transitions. Word has length 1583 [2024-10-24 14:52:12,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:52:12,143 INFO L471 AbstractCegarLoop]: Abstraction has 3819 states and 5211 transitions. [2024-10-24 14:52:12,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.0) internal successors, (240), 4 states have internal predecessors, (240), 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 14:52:12,143 INFO L276 IsEmpty]: Start isEmpty. Operand 3819 states and 5211 transitions. [2024-10-24 14:52:12,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1585 [2024-10-24 14:52:12,163 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:52:12,164 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:52:12,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-24 14:52:12,165 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:52:12,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:52:12,165 INFO L85 PathProgramCache]: Analyzing trace with hash -618374023, now seen corresponding path program 1 times [2024-10-24 14:52:12,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:52:12,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794848087] [2024-10-24 14:52:12,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:52:12,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:52:13,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat