./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX --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 71ab165d8600c7bf3c601364205c3c131ed910663de3282b3121f676cf35500e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 16:07:07,296 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:07:07,384 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 16:07:07,391 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:07:07,392 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:07:07,432 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:07:07,433 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:07:07,434 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:07:07,435 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:07:07,435 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:07:07,436 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:07:07,436 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:07:07,437 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:07:07,437 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:07:07,438 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:07:07,438 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:07:07,439 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 16:07:07,439 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 16:07:07,439 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 16:07:07,440 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 16:07:07,440 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:07:07,445 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 16:07:07,445 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:07:07,445 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 16:07:07,445 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:07:07,446 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 16:07:07,446 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 16:07:07,446 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:07:07,446 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:07:07,447 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:07:07,447 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:07:07,447 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:07:07,447 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:07:07,448 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:07:07,448 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:07:07,450 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 16:07:07,450 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 16:07:07,451 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 16:07:07,451 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:07:07,452 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:07:07,452 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:07:07,452 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:07:07,453 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71ab165d8600c7bf3c601364205c3c131ed910663de3282b3121f676cf35500e [2024-11-08 16:07:07,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:07:07,788 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:07:07,791 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:07:07,793 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:07:07,793 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:07:07,795 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label02.c Unable to find full path for "g++" [2024-11-08 16:07:09,866 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:07:10,383 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:07:10,385 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label02.c [2024-11-08 16:07:10,431 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/data/607dacf72/24b539e49cbe46588b6eeed9e29731dd/FLAGb8e95e202 [2024-11-08 16:07:10,454 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/data/607dacf72/24b539e49cbe46588b6eeed9e29731dd [2024-11-08 16:07:10,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:07:10,459 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:07:10,462 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:07:10,463 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:07:10,469 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:07:10,470 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:07:10" (1/1) ... [2024-11-08 16:07:10,471 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cb07e35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:07:10, skipping insertion in model container [2024-11-08 16:07:10,471 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:07:10" (1/1) ... [2024-11-08 16:07:10,606 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:07:10,997 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label02.c[8616,8629] [2024-11-08 16:07:11,111 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label02.c[15906,15919] [2024-11-08 16:07:12,151 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:07:12,165 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:07:12,235 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label02.c[8616,8629] [2024-11-08 16:07:12,260 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label02.c[15906,15919] [2024-11-08 16:07:12,852 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:07:12,888 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:07:12,889 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:07:12 WrapperNode [2024-11-08 16:07:12,889 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:07:12,891 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:07:12,891 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:07:12,891 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:07:12,901 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:07:12" (1/1) ... [2024-11-08 16:07:12,992 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:07:12" (1/1) ... [2024-11-08 16:07:13,273 INFO L138 Inliner]: procedures = 34, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 5037 [2024-11-08 16:07:13,274 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:07:13,274 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:07:13,275 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:07:13,275 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:07:13,289 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:07:12" (1/1) ... [2024-11-08 16:07:13,290 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:07:12" (1/1) ... [2024-11-08 16:07:13,471 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:07:12" (1/1) ... [2024-11-08 16:07:13,689 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-08 16:07:13,689 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:07:12" (1/1) ... [2024-11-08 16:07:13,690 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:07:12" (1/1) ... [2024-11-08 16:07:13,873 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:07:12" (1/1) ... [2024-11-08 16:07:13,901 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:07:12" (1/1) ... [2024-11-08 16:07:13,946 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:07:12" (1/1) ... [2024-11-08 16:07:13,957 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:07:12" (1/1) ... [2024-11-08 16:07:14,046 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:07:14,047 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:07:14,047 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:07:14,047 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:07:14,048 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:07:12" (1/1) ... [2024-11-08 16:07:14,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:07:14,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:07:14,081 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 16:07:14,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 16:07:14,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 16:07:14,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 16:07:14,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:07:14,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:07:14,235 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:07:14,237 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:07:19,629 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2024-11-08 16:07:19,629 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:07:19,668 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:07:19,668 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 16:07:19,669 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:07:19 BoogieIcfgContainer [2024-11-08 16:07:19,669 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:07:19,671 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:07:19,671 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:07:19,678 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:07:19,678 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:07:10" (1/3) ... [2024-11-08 16:07:19,679 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31990bab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:07:19, skipping insertion in model container [2024-11-08 16:07:19,679 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:07:12" (2/3) ... [2024-11-08 16:07:19,679 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31990bab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:07:19, skipping insertion in model container [2024-11-08 16:07:19,680 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:07:19" (3/3) ... [2024-11-08 16:07:19,681 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label02.c [2024-11-08 16:07:19,701 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:07:19,702 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-08 16:07:19,816 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:07:19,824 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;@5952e817, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:07:19,824 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-08 16:07:19,837 INFO L276 IsEmpty]: Start isEmpty. Operand has 886 states, 883 states have (on average 1.9048697621744055) internal successors, (1682), 885 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:19,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-08 16:07:19,846 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:19,846 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] [2024-11-08 16:07:19,847 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:19,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:19,855 INFO L85 PathProgramCache]: Analyzing trace with hash 578166823, now seen corresponding path program 1 times [2024-11-08 16:07:19,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:19,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034889215] [2024-11-08 16:07:19,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:19,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:20,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:20,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:20,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:20,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034889215] [2024-11-08 16:07:20,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034889215] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:20,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:20,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:07:20,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382692609] [2024-11-08 16:07:20,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:20,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 16:07:20,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:20,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 16:07:20,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 16:07:20,249 INFO L87 Difference]: Start difference. First operand has 886 states, 883 states have (on average 1.9048697621744055) internal successors, (1682), 885 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:20,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:20,359 INFO L93 Difference]: Finished difference Result 1743 states and 3310 transitions. [2024-11-08 16:07:20,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 16:07:20,361 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-08 16:07:20,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:20,381 INFO L225 Difference]: With dead ends: 1743 [2024-11-08 16:07:20,382 INFO L226 Difference]: Without dead ends: 820 [2024-11-08 16:07:20,391 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 16:07:20,402 INFO L432 NwaCegarLoop]: 1617 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:20,403 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1617 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:07:20,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2024-11-08 16:07:20,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 820. [2024-11-08 16:07:20,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 818 states have (on average 1.8936430317848412) internal successors, (1549), 819 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:20,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1549 transitions. [2024-11-08 16:07:20,514 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1549 transitions. Word has length 23 [2024-11-08 16:07:20,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:20,515 INFO L471 AbstractCegarLoop]: Abstraction has 820 states and 1549 transitions. [2024-11-08 16:07:20,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:20,515 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1549 transitions. [2024-11-08 16:07:20,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-08 16:07:20,516 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:20,517 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] [2024-11-08 16:07:20,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 16:07:20,517 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:20,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:20,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1010181079, now seen corresponding path program 1 times [2024-11-08 16:07:20,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:20,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31729056] [2024-11-08 16:07:20,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:20,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:20,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:20,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:20,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:20,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31729056] [2024-11-08 16:07:20,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31729056] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:20,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:20,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:07:20,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288228551] [2024-11-08 16:07:20,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:20,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:07:20,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:20,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:07:20,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:07:20,804 INFO L87 Difference]: Start difference. First operand 820 states and 1549 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:21,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:21,006 INFO L93 Difference]: Finished difference Result 898 states and 1669 transitions. [2024-11-08 16:07:21,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:07:21,007 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-08 16:07:21,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:21,012 INFO L225 Difference]: With dead ends: 898 [2024-11-08 16:07:21,013 INFO L226 Difference]: Without dead ends: 857 [2024-11-08 16:07:21,014 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:07:21,016 INFO L432 NwaCegarLoop]: 1544 mSDtfsCounter, 57 mSDsluCounter, 4603 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 6147 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:21,016 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 6147 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:07:21,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2024-11-08 16:07:21,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 820. [2024-11-08 16:07:21,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 818 states have (on average 1.8655256723716382) internal successors, (1526), 819 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:21,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1526 transitions. [2024-11-08 16:07:21,073 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1526 transitions. Word has length 23 [2024-11-08 16:07:21,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:21,074 INFO L471 AbstractCegarLoop]: Abstraction has 820 states and 1526 transitions. [2024-11-08 16:07:21,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:21,074 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1526 transitions. [2024-11-08 16:07:21,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-08 16:07:21,075 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:21,076 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] [2024-11-08 16:07:21,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 16:07:21,076 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:21,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:21,077 INFO L85 PathProgramCache]: Analyzing trace with hash -552687090, now seen corresponding path program 1 times [2024-11-08 16:07:21,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:21,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653200131] [2024-11-08 16:07:21,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:21,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:21,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:21,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:21,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653200131] [2024-11-08 16:07:21,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653200131] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:21,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:21,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 16:07:21,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376208707] [2024-11-08 16:07:21,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:21,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 16:07:21,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:21,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 16:07:21,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 16:07:21,367 INFO L87 Difference]: Start difference. First operand 820 states and 1526 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:21,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:21,626 INFO L93 Difference]: Finished difference Result 1116 states and 1990 transitions. [2024-11-08 16:07:21,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 16:07:21,627 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-11-08 16:07:21,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:21,633 INFO L225 Difference]: With dead ends: 1116 [2024-11-08 16:07:21,634 INFO L226 Difference]: Without dead ends: 1079 [2024-11-08 16:07:21,636 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-08 16:07:21,639 INFO L432 NwaCegarLoop]: 1522 mSDtfsCounter, 6269 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6269 SdHoareTripleChecker+Valid, 2201 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:21,640 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6269 Valid, 2201 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:07:21,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2024-11-08 16:07:21,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 855. [2024-11-08 16:07:21,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 853 states have (on average 1.8534583821805393) internal successors, (1581), 854 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:21,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1581 transitions. [2024-11-08 16:07:21,711 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1581 transitions. Word has length 45 [2024-11-08 16:07:21,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:21,712 INFO L471 AbstractCegarLoop]: Abstraction has 855 states and 1581 transitions. [2024-11-08 16:07:21,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:21,713 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1581 transitions. [2024-11-08 16:07:21,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-08 16:07:21,715 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:21,715 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] [2024-11-08 16:07:21,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 16:07:21,717 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:21,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:21,720 INFO L85 PathProgramCache]: Analyzing trace with hash 27952062, now seen corresponding path program 1 times [2024-11-08 16:07:21,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:21,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245164811] [2024-11-08 16:07:21,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:21,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:21,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:21,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:21,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:21,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245164811] [2024-11-08 16:07:21,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245164811] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:21,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:21,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:07:21,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618890209] [2024-11-08 16:07:21,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:21,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:07:21,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:21,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:07:21,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:07:21,893 INFO L87 Difference]: Start difference. First operand 855 states and 1581 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:21,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:21,946 INFO L93 Difference]: Finished difference Result 988 states and 1788 transitions. [2024-11-08 16:07:21,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:07:21,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-08 16:07:21,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:21,952 INFO L225 Difference]: With dead ends: 988 [2024-11-08 16:07:21,952 INFO L226 Difference]: Without dead ends: 916 [2024-11-08 16:07:21,955 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:07:21,956 INFO L432 NwaCegarLoop]: 1524 mSDtfsCounter, 1474 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:21,957 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1577 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:07:21,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2024-11-08 16:07:21,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 914. [2024-11-08 16:07:21,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 912 states have (on average 1.832236842105263) internal successors, (1671), 913 states have internal predecessors, (1671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:21,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1671 transitions. [2024-11-08 16:07:21,993 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1671 transitions. Word has length 47 [2024-11-08 16:07:21,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:21,995 INFO L471 AbstractCegarLoop]: Abstraction has 914 states and 1671 transitions. [2024-11-08 16:07:21,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:21,995 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1671 transitions. [2024-11-08 16:07:21,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-08 16:07:22,001 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:22,002 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] [2024-11-08 16:07:22,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 16:07:22,002 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:22,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:22,003 INFO L85 PathProgramCache]: Analyzing trace with hash 94445574, now seen corresponding path program 1 times [2024-11-08 16:07:22,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:22,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220492227] [2024-11-08 16:07:22,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:22,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:22,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:22,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:22,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:22,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220492227] [2024-11-08 16:07:22,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220492227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:22,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:22,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 16:07:22,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660074202] [2024-11-08 16:07:22,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:22,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 16:07:22,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:22,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 16:07:22,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-08 16:07:22,433 INFO L87 Difference]: Start difference. First operand 914 states and 1671 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:22,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:22,639 INFO L93 Difference]: Finished difference Result 1047 states and 1875 transitions. [2024-11-08 16:07:22,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:07:22,640 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-08 16:07:22,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:22,644 INFO L225 Difference]: With dead ends: 1047 [2024-11-08 16:07:22,645 INFO L226 Difference]: Without dead ends: 916 [2024-11-08 16:07:22,646 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:07:22,647 INFO L432 NwaCegarLoop]: 1520 mSDtfsCounter, 5924 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5924 SdHoareTripleChecker+Valid, 1682 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:22,647 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5924 Valid, 1682 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:07:22,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2024-11-08 16:07:22,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 914. [2024-11-08 16:07:22,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 912 states have (on average 1.8300438596491229) internal successors, (1669), 913 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:22,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1669 transitions. [2024-11-08 16:07:22,681 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1669 transitions. Word has length 47 [2024-11-08 16:07:22,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:22,681 INFO L471 AbstractCegarLoop]: Abstraction has 914 states and 1669 transitions. [2024-11-08 16:07:22,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:22,682 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1669 transitions. [2024-11-08 16:07:22,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-08 16:07:22,683 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:22,684 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] [2024-11-08 16:07:22,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 16:07:22,684 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:22,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:22,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1781877655, now seen corresponding path program 1 times [2024-11-08 16:07:22,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:22,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57603540] [2024-11-08 16:07:22,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:22,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:22,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:23,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:23,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:23,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57603540] [2024-11-08 16:07:23,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57603540] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:23,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:23,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:07:23,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804766079] [2024-11-08 16:07:23,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:23,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:07:23,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:23,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:07:23,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:07:23,089 INFO L87 Difference]: Start difference. First operand 914 states and 1669 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:23,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:23,167 INFO L93 Difference]: Finished difference Result 922 states and 1678 transitions. [2024-11-08 16:07:23,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:07:23,170 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-08 16:07:23,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:23,176 INFO L225 Difference]: With dead ends: 922 [2024-11-08 16:07:23,176 INFO L226 Difference]: Without dead ends: 920 [2024-11-08 16:07:23,178 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:07:23,180 INFO L432 NwaCegarLoop]: 1523 mSDtfsCounter, 0 mSDsluCounter, 4560 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6083 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:23,182 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6083 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:07:23,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2024-11-08 16:07:23,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 920. [2024-11-08 16:07:23,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920 states, 918 states have (on average 1.8235294117647058) internal successors, (1674), 919 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:23,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 1674 transitions. [2024-11-08 16:07:23,224 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 1674 transitions. Word has length 48 [2024-11-08 16:07:23,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:23,224 INFO L471 AbstractCegarLoop]: Abstraction has 920 states and 1674 transitions. [2024-11-08 16:07:23,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:23,225 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 1674 transitions. [2024-11-08 16:07:23,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-08 16:07:23,225 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:23,226 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] [2024-11-08 16:07:23,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 16:07:23,226 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:23,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:23,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1233670470, now seen corresponding path program 1 times [2024-11-08 16:07:23,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:23,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089224020] [2024-11-08 16:07:23,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:23,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:23,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:23,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:23,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:23,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089224020] [2024-11-08 16:07:23,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089224020] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:23,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:23,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:07:23,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019792920] [2024-11-08 16:07:23,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:23,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:07:23,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:23,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:07:23,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:07:23,332 INFO L87 Difference]: Start difference. First operand 920 states and 1674 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:23,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:23,380 INFO L93 Difference]: Finished difference Result 1071 states and 1900 transitions. [2024-11-08 16:07:23,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:07:23,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-08 16:07:23,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:23,386 INFO L225 Difference]: With dead ends: 1071 [2024-11-08 16:07:23,386 INFO L226 Difference]: Without dead ends: 993 [2024-11-08 16:07:23,387 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:07:23,390 INFO L432 NwaCegarLoop]: 1568 mSDtfsCounter, 1486 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:23,391 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 1627 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:07:23,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2024-11-08 16:07:23,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 991. [2024-11-08 16:07:23,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 989 states have (on average 1.7977755308392316) internal successors, (1778), 990 states have internal predecessors, (1778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:23,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1778 transitions. [2024-11-08 16:07:23,422 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1778 transitions. Word has length 49 [2024-11-08 16:07:23,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:23,422 INFO L471 AbstractCegarLoop]: Abstraction has 991 states and 1778 transitions. [2024-11-08 16:07:23,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:23,423 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1778 transitions. [2024-11-08 16:07:23,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-08 16:07:23,423 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:23,424 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] [2024-11-08 16:07:23,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 16:07:23,424 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:23,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:23,425 INFO L85 PathProgramCache]: Analyzing trace with hash 256463686, now seen corresponding path program 1 times [2024-11-08 16:07:23,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:23,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395017782] [2024-11-08 16:07:23,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:23,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:23,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:23,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:23,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:23,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395017782] [2024-11-08 16:07:23,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395017782] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:23,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:23,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:07:23,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694987202] [2024-11-08 16:07:23,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:23,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:07:23,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:23,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:07:23,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:07:23,500 INFO L87 Difference]: Start difference. First operand 991 states and 1778 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:23,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:23,540 INFO L93 Difference]: Finished difference Result 1377 states and 2350 transitions. [2024-11-08 16:07:23,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:07:23,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-08 16:07:23,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:23,545 INFO L225 Difference]: With dead ends: 1377 [2024-11-08 16:07:23,545 INFO L226 Difference]: Without dead ends: 1172 [2024-11-08 16:07:23,546 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:07:23,547 INFO L432 NwaCegarLoop]: 1560 mSDtfsCounter, 1482 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:23,547 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1627 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:07:23,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2024-11-08 16:07:23,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1170. [2024-11-08 16:07:23,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1170 states, 1168 states have (on average 1.7431506849315068) internal successors, (2036), 1169 states have internal predecessors, (2036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:23,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 2036 transitions. [2024-11-08 16:07:23,579 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 2036 transitions. Word has length 49 [2024-11-08 16:07:23,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:23,580 INFO L471 AbstractCegarLoop]: Abstraction has 1170 states and 2036 transitions. [2024-11-08 16:07:23,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:23,580 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 2036 transitions. [2024-11-08 16:07:23,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-08 16:07:23,581 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:23,581 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] [2024-11-08 16:07:23,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 16:07:23,581 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:23,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:23,582 INFO L85 PathProgramCache]: Analyzing trace with hash 2037396550, now seen corresponding path program 1 times [2024-11-08 16:07:23,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:23,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499873637] [2024-11-08 16:07:23,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:23,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:23,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:23,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:23,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:23,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499873637] [2024-11-08 16:07:23,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499873637] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:23,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:23,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:07:23,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196000703] [2024-11-08 16:07:23,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:23,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:07:23,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:23,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:07:23,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:07:23,642 INFO L87 Difference]: Start difference. First operand 1170 states and 2036 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:23,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:23,688 INFO L93 Difference]: Finished difference Result 1890 states and 3082 transitions. [2024-11-08 16:07:23,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:07:23,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-08 16:07:23,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:23,695 INFO L225 Difference]: With dead ends: 1890 [2024-11-08 16:07:23,695 INFO L226 Difference]: Without dead ends: 1506 [2024-11-08 16:07:23,696 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:07:23,697 INFO L432 NwaCegarLoop]: 1558 mSDtfsCounter, 1480 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1629 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:23,697 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1629 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:07:23,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2024-11-08 16:07:23,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1504. [2024-11-08 16:07:23,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1504 states, 1502 states have (on average 1.66711051930759) internal successors, (2504), 1503 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:23,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 2504 transitions. [2024-11-08 16:07:23,780 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 2504 transitions. Word has length 49 [2024-11-08 16:07:23,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:23,780 INFO L471 AbstractCegarLoop]: Abstraction has 1504 states and 2504 transitions. [2024-11-08 16:07:23,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:23,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 2504 transitions. [2024-11-08 16:07:23,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-08 16:07:23,781 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:23,782 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] [2024-11-08 16:07:23,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 16:07:23,782 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:23,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:23,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1823034810, now seen corresponding path program 1 times [2024-11-08 16:07:23,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:23,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467508617] [2024-11-08 16:07:23,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:23,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:23,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:23,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:23,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:23,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467508617] [2024-11-08 16:07:23,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467508617] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:23,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:23,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:07:23,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406108268] [2024-11-08 16:07:23,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:23,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:07:23,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:23,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:07:23,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:07:23,853 INFO L87 Difference]: Start difference. First operand 1504 states and 2504 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:23,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:23,908 INFO L93 Difference]: Finished difference Result 2844 states and 4402 transitions. [2024-11-08 16:07:23,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:07:23,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-08 16:07:23,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:23,918 INFO L225 Difference]: With dead ends: 2844 [2024-11-08 16:07:23,918 INFO L226 Difference]: Without dead ends: 2126 [2024-11-08 16:07:23,920 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:07:23,920 INFO L432 NwaCegarLoop]: 1570 mSDtfsCounter, 1484 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1633 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:23,921 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1633 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:07:23,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2126 states. [2024-11-08 16:07:23,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2126 to 2124. [2024-11-08 16:07:23,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2124 states, 2122 states have (on average 1.5758718190386427) internal successors, (3344), 2123 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:23,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2124 states to 2124 states and 3344 transitions. [2024-11-08 16:07:23,988 INFO L78 Accepts]: Start accepts. Automaton has 2124 states and 3344 transitions. Word has length 49 [2024-11-08 16:07:23,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:23,989 INFO L471 AbstractCegarLoop]: Abstraction has 2124 states and 3344 transitions. [2024-11-08 16:07:23,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:23,989 INFO L276 IsEmpty]: Start isEmpty. Operand 2124 states and 3344 transitions. [2024-11-08 16:07:23,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-08 16:07:23,990 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:23,990 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] [2024-11-08 16:07:23,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 16:07:23,993 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:23,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:23,993 INFO L85 PathProgramCache]: Analyzing trace with hash 118623488, now seen corresponding path program 1 times [2024-11-08 16:07:23,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:23,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372406119] [2024-11-08 16:07:23,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:23,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:24,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:24,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:24,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:24,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372406119] [2024-11-08 16:07:24,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372406119] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:24,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:24,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:07:24,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328890941] [2024-11-08 16:07:24,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:24,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:07:24,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:24,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:07:24,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:07:24,103 INFO L87 Difference]: Start difference. First operand 2124 states and 3344 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:28,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:28,979 INFO L93 Difference]: Finished difference Result 3628 states and 6217 transitions. [2024-11-08 16:07:28,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:07:28,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-08 16:07:29,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:29,029 INFO L225 Difference]: With dead ends: 3628 [2024-11-08 16:07:29,030 INFO L226 Difference]: Without dead ends: 2875 [2024-11-08 16:07:29,031 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 [2024-11-08 16:07:29,032 INFO L432 NwaCegarLoop]: 555 mSDtfsCounter, 825 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:29,032 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 562 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-11-08 16:07:29,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2875 states. [2024-11-08 16:07:29,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2875 to 2875. [2024-11-08 16:07:29,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2875 states, 2873 states have (on average 1.5046989209885138) internal successors, (4323), 2874 states have internal predecessors, (4323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:29,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2875 states to 2875 states and 4323 transitions. [2024-11-08 16:07:29,116 INFO L78 Accepts]: Start accepts. Automaton has 2875 states and 4323 transitions. Word has length 63 [2024-11-08 16:07:29,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:29,117 INFO L471 AbstractCegarLoop]: Abstraction has 2875 states and 4323 transitions. [2024-11-08 16:07:29,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:29,117 INFO L276 IsEmpty]: Start isEmpty. Operand 2875 states and 4323 transitions. [2024-11-08 16:07:29,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-08 16:07:29,118 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:29,119 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:07:29,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 16:07:29,119 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:29,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:29,120 INFO L85 PathProgramCache]: Analyzing trace with hash 2040509128, now seen corresponding path program 1 times [2024-11-08 16:07:29,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:29,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272478315] [2024-11-08 16:07:29,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:29,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:29,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:29,312 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 16:07:29,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:29,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272478315] [2024-11-08 16:07:29,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272478315] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:29,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:29,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 16:07:29,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676977869] [2024-11-08 16:07:29,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:29,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 16:07:29,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:29,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 16:07:29,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 16:07:29,314 INFO L87 Difference]: Start difference. First operand 2875 states and 4323 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:29,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:29,565 INFO L93 Difference]: Finished difference Result 8149 states and 11696 transitions. [2024-11-08 16:07:29,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:07:29,566 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-08 16:07:29,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:29,590 INFO L225 Difference]: With dead ends: 8149 [2024-11-08 16:07:29,590 INFO L226 Difference]: Without dead ends: 7187 [2024-11-08 16:07:29,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-08 16:07:29,594 INFO L432 NwaCegarLoop]: 1576 mSDtfsCounter, 4650 mSDsluCounter, 1751 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4650 SdHoareTripleChecker+Valid, 3327 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:29,594 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4650 Valid, 3327 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:07:29,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7187 states. [2024-11-08 16:07:29,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7187 to 4027. [2024-11-08 16:07:29,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4027 states, 4025 states have (on average 1.4695652173913043) internal successors, (5915), 4026 states have internal predecessors, (5915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:29,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4027 states to 4027 states and 5915 transitions. [2024-11-08 16:07:29,743 INFO L78 Accepts]: Start accepts. Automaton has 4027 states and 5915 transitions. Word has length 67 [2024-11-08 16:07:29,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:29,743 INFO L471 AbstractCegarLoop]: Abstraction has 4027 states and 5915 transitions. [2024-11-08 16:07:29,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:29,744 INFO L276 IsEmpty]: Start isEmpty. Operand 4027 states and 5915 transitions. [2024-11-08 16:07:29,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-08 16:07:29,746 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:29,746 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:07:29,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 16:07:29,747 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:29,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:29,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1063302344, now seen corresponding path program 1 times [2024-11-08 16:07:29,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:29,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256513629] [2024-11-08 16:07:29,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:29,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:29,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:29,932 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 16:07:29,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:29,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256513629] [2024-11-08 16:07:29,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256513629] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:29,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:29,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 16:07:29,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569986743] [2024-11-08 16:07:29,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:29,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 16:07:29,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:29,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 16:07:29,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 16:07:29,935 INFO L87 Difference]: Start difference. First operand 4027 states and 5915 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:30,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:30,187 INFO L93 Difference]: Finished difference Result 9485 states and 13552 transitions. [2024-11-08 16:07:30,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:07:30,188 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-08 16:07:30,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:30,213 INFO L225 Difference]: With dead ends: 9485 [2024-11-08 16:07:30,213 INFO L226 Difference]: Without dead ends: 8147 [2024-11-08 16:07:30,217 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-08 16:07:30,218 INFO L432 NwaCegarLoop]: 1576 mSDtfsCounter, 4687 mSDsluCounter, 1766 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4687 SdHoareTripleChecker+Valid, 3342 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:30,218 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4687 Valid, 3342 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:07:30,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8147 states. [2024-11-08 16:07:30,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8147 to 5843. [2024-11-08 16:07:30,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5843 states, 5841 states have (on average 1.441362780345831) internal successors, (8419), 5842 states have internal predecessors, (8419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:30,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5843 states to 5843 states and 8419 transitions. [2024-11-08 16:07:30,476 INFO L78 Accepts]: Start accepts. Automaton has 5843 states and 8419 transitions. Word has length 67 [2024-11-08 16:07:30,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:30,476 INFO L471 AbstractCegarLoop]: Abstraction has 5843 states and 8419 transitions. [2024-11-08 16:07:30,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:30,477 INFO L276 IsEmpty]: Start isEmpty. Operand 5843 states and 8419 transitions. [2024-11-08 16:07:30,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-08 16:07:30,481 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:30,481 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:07:30,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 16:07:30,481 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:30,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:30,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1450732088, now seen corresponding path program 1 times [2024-11-08 16:07:30,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:30,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118116712] [2024-11-08 16:07:30,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:30,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:30,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:30,637 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 16:07:30,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:30,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118116712] [2024-11-08 16:07:30,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118116712] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:30,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:30,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 16:07:30,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113147509] [2024-11-08 16:07:30,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:30,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 16:07:30,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:30,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 16:07:30,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 16:07:30,640 INFO L87 Difference]: Start difference. First operand 5843 states and 8419 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:30,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:30,948 INFO L93 Difference]: Finished difference Result 10821 states and 15400 transitions. [2024-11-08 16:07:30,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:07:30,949 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-08 16:07:30,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:30,985 INFO L225 Difference]: With dead ends: 10821 [2024-11-08 16:07:30,985 INFO L226 Difference]: Without dead ends: 9483 [2024-11-08 16:07:30,989 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-08 16:07:30,990 INFO L432 NwaCegarLoop]: 1576 mSDtfsCounter, 4684 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4684 SdHoareTripleChecker+Valid, 3336 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:30,990 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4684 Valid, 3336 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:07:31,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9483 states. [2024-11-08 16:07:31,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9483 to 7179. [2024-11-08 16:07:31,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7179 states, 7177 states have (on average 1.430542009196043) internal successors, (10267), 7178 states have internal predecessors, (10267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:31,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7179 states to 7179 states and 10267 transitions. [2024-11-08 16:07:31,234 INFO L78 Accepts]: Start accepts. Automaton has 7179 states and 10267 transitions. Word has length 67 [2024-11-08 16:07:31,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:31,234 INFO L471 AbstractCegarLoop]: Abstraction has 7179 states and 10267 transitions. [2024-11-08 16:07:31,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:31,235 INFO L276 IsEmpty]: Start isEmpty. Operand 7179 states and 10267 transitions. [2024-11-08 16:07:31,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-08 16:07:31,237 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:31,237 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:07:31,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 16:07:31,237 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:31,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:31,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1016196152, now seen corresponding path program 1 times [2024-11-08 16:07:31,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:31,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227528617] [2024-11-08 16:07:31,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:31,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:31,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:31,396 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 16:07:31,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:31,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227528617] [2024-11-08 16:07:31,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227528617] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:31,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:31,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 16:07:31,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874221266] [2024-11-08 16:07:31,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:31,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 16:07:31,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:31,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 16:07:31,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 16:07:31,399 INFO L87 Difference]: Start difference. First operand 7179 states and 10267 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:31,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:31,843 INFO L93 Difference]: Finished difference Result 12157 states and 17248 transitions. [2024-11-08 16:07:31,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:07:31,844 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-08 16:07:31,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:31,868 INFO L225 Difference]: With dead ends: 12157 [2024-11-08 16:07:31,868 INFO L226 Difference]: Without dead ends: 10819 [2024-11-08 16:07:31,875 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-08 16:07:31,876 INFO L432 NwaCegarLoop]: 1575 mSDtfsCounter, 4652 mSDsluCounter, 1809 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4652 SdHoareTripleChecker+Valid, 3384 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:31,877 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4652 Valid, 3384 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:07:31,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10819 states. [2024-11-08 16:07:32,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10819 to 8515. [2024-11-08 16:07:32,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8515 states, 8513 states have (on average 1.4231175848701985) internal successors, (12115), 8514 states have internal predecessors, (12115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:32,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8515 states to 8515 states and 12115 transitions. [2024-11-08 16:07:32,311 INFO L78 Accepts]: Start accepts. Automaton has 8515 states and 12115 transitions. Word has length 67 [2024-11-08 16:07:32,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:32,312 INFO L471 AbstractCegarLoop]: Abstraction has 8515 states and 12115 transitions. [2024-11-08 16:07:32,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:32,313 INFO L276 IsEmpty]: Start isEmpty. Operand 8515 states and 12115 transitions. [2024-11-08 16:07:32,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-08 16:07:32,316 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:32,317 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:07:32,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 16:07:32,317 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:32,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:32,318 INFO L85 PathProgramCache]: Analyzing trace with hash 631665112, now seen corresponding path program 1 times [2024-11-08 16:07:32,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:32,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953977314] [2024-11-08 16:07:32,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:32,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:32,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:32,496 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:32,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:32,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953977314] [2024-11-08 16:07:32,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953977314] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:32,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:32,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:07:32,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131214379] [2024-11-08 16:07:32,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:32,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:07:32,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:32,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:07:32,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:07:32,499 INFO L87 Difference]: Start difference. First operand 8515 states and 12115 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:32,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:32,684 INFO L93 Difference]: Finished difference Result 15495 states and 21781 transitions. [2024-11-08 16:07:32,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:07:32,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-08 16:07:32,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:32,702 INFO L225 Difference]: With dead ends: 15495 [2024-11-08 16:07:32,702 INFO L226 Difference]: Without dead ends: 8517 [2024-11-08 16:07:32,711 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:07:32,712 INFO L432 NwaCegarLoop]: 1553 mSDtfsCounter, 37 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3067 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:32,712 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3067 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:07:32,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8517 states. [2024-11-08 16:07:32,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8517 to 8515. [2024-11-08 16:07:32,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8515 states, 8513 states have (on average 1.4085516269235288) internal successors, (11991), 8514 states have internal predecessors, (11991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:32,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8515 states to 8515 states and 11991 transitions. [2024-11-08 16:07:32,977 INFO L78 Accepts]: Start accepts. Automaton has 8515 states and 11991 transitions. Word has length 68 [2024-11-08 16:07:32,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:32,978 INFO L471 AbstractCegarLoop]: Abstraction has 8515 states and 11991 transitions. [2024-11-08 16:07:32,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:32,978 INFO L276 IsEmpty]: Start isEmpty. Operand 8515 states and 11991 transitions. [2024-11-08 16:07:32,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-08 16:07:32,980 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:32,980 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:07:32,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-08 16:07:32,981 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:32,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:32,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1338835776, now seen corresponding path program 1 times [2024-11-08 16:07:32,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:32,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308982392] [2024-11-08 16:07:32,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:32,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:33,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:33,126 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:33,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:33,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308982392] [2024-11-08 16:07:33,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308982392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:33,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:33,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:07:33,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774940427] [2024-11-08 16:07:33,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:33,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:07:33,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:33,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:07:33,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:07:33,129 INFO L87 Difference]: Start difference. First operand 8515 states and 11991 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:33,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:33,278 INFO L93 Difference]: Finished difference Result 11177 states and 15664 transitions. [2024-11-08 16:07:33,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:07:33,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-08 16:07:33,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:33,288 INFO L225 Difference]: With dead ends: 11177 [2024-11-08 16:07:33,288 INFO L226 Difference]: Without dead ends: 4199 [2024-11-08 16:07:33,295 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:07:33,296 INFO L432 NwaCegarLoop]: 1551 mSDtfsCounter, 31 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3064 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:33,296 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3064 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:07:33,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4199 states. [2024-11-08 16:07:33,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4199 to 4190. [2024-11-08 16:07:33,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4190 states, 4188 states have (on average 1.4493791786055397) internal successors, (6070), 4189 states have internal predecessors, (6070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:33,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4190 states to 4190 states and 6070 transitions. [2024-11-08 16:07:33,408 INFO L78 Accepts]: Start accepts. Automaton has 4190 states and 6070 transitions. Word has length 69 [2024-11-08 16:07:33,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:33,409 INFO L471 AbstractCegarLoop]: Abstraction has 4190 states and 6070 transitions. [2024-11-08 16:07:33,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:33,409 INFO L276 IsEmpty]: Start isEmpty. Operand 4190 states and 6070 transitions. [2024-11-08 16:07:33,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-08 16:07:33,411 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:33,411 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:07:33,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-08 16:07:33,411 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:33,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:33,412 INFO L85 PathProgramCache]: Analyzing trace with hash 634449354, now seen corresponding path program 1 times [2024-11-08 16:07:33,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:33,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392796971] [2024-11-08 16:07:33,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:33,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:33,562 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:33,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:33,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392796971] [2024-11-08 16:07:33,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392796971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:33,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:33,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:07:33,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50642538] [2024-11-08 16:07:33,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:33,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:07:33,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:33,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:07:33,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:07:33,566 INFO L87 Difference]: Start difference. First operand 4190 states and 6070 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:33,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:33,632 INFO L93 Difference]: Finished difference Result 5514 states and 7876 transitions. [2024-11-08 16:07:33,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:07:33,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-08 16:07:33,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:33,640 INFO L225 Difference]: With dead ends: 5514 [2024-11-08 16:07:33,640 INFO L226 Difference]: Without dead ends: 2872 [2024-11-08 16:07:33,643 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:07:33,644 INFO L432 NwaCegarLoop]: 1545 mSDtfsCounter, 33 mSDsluCounter, 1498 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3043 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:33,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3043 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:07:33,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2872 states. [2024-11-08 16:07:33,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2872 to 2870. [2024-11-08 16:07:33,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2870 states, 2868 states have (on average 1.4797768479776847) internal successors, (4244), 2869 states have internal predecessors, (4244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:33,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 4244 transitions. [2024-11-08 16:07:33,718 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 4244 transitions. Word has length 70 [2024-11-08 16:07:33,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:33,718 INFO L471 AbstractCegarLoop]: Abstraction has 2870 states and 4244 transitions. [2024-11-08 16:07:33,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:33,719 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 4244 transitions. [2024-11-08 16:07:33,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-08 16:07:33,720 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:33,721 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:07:33,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-08 16:07:33,722 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:33,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:33,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1930039236, now seen corresponding path program 1 times [2024-11-08 16:07:33,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:33,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156505697] [2024-11-08 16:07:33,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:33,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:33,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:33,858 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:33,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:33,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156505697] [2024-11-08 16:07:33,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156505697] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:33,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:33,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:07:33,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186187729] [2024-11-08 16:07:33,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:33,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:07:33,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:33,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:07:33,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:07:33,862 INFO L87 Difference]: Start difference. First operand 2870 states and 4244 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:33,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:33,906 INFO L93 Difference]: Finished difference Result 3534 states and 5137 transitions. [2024-11-08 16:07:33,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:07:33,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-11-08 16:07:33,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:33,911 INFO L225 Difference]: With dead ends: 3534 [2024-11-08 16:07:33,912 INFO L226 Difference]: Without dead ends: 2212 [2024-11-08 16:07:33,914 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:07:33,915 INFO L432 NwaCegarLoop]: 1538 mSDtfsCounter, 30 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3028 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:33,915 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3028 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:07:33,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2212 states. [2024-11-08 16:07:33,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2212 to 2210. [2024-11-08 16:07:33,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2210 states, 2208 states have (on average 1.513586956521739) internal successors, (3342), 2209 states have internal predecessors, (3342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:33,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2210 states to 2210 states and 3342 transitions. [2024-11-08 16:07:33,963 INFO L78 Accepts]: Start accepts. Automaton has 2210 states and 3342 transitions. Word has length 72 [2024-11-08 16:07:33,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:33,963 INFO L471 AbstractCegarLoop]: Abstraction has 2210 states and 3342 transitions. [2024-11-08 16:07:33,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:33,964 INFO L276 IsEmpty]: Start isEmpty. Operand 2210 states and 3342 transitions. [2024-11-08 16:07:33,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-08 16:07:33,966 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:33,966 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:07:33,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-08 16:07:33,967 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:33,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:33,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1270913326, now seen corresponding path program 1 times [2024-11-08 16:07:33,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:33,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108696163] [2024-11-08 16:07:33,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:33,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:34,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:36,112 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:36,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:36,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108696163] [2024-11-08 16:07:36,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108696163] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:07:36,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500498569] [2024-11-08 16:07:36,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:36,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:07:36,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:07:36,116 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:07:36,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 16:07:36,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:36,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-08 16:07:36,287 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:07:36,712 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:36,712 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:07:37,467 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:37,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500498569] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:07:37,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:07:37,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 6] total 22 [2024-11-08 16:07:37,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689962908] [2024-11-08 16:07:37,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:07:37,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-08 16:07:37,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:37,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-08 16:07:37,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2024-11-08 16:07:37,471 INFO L87 Difference]: Start difference. First operand 2210 states and 3342 transitions. Second operand has 22 states, 22 states have (on average 9.5) internal successors, (209), 22 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:44,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:44,693 INFO L93 Difference]: Finished difference Result 7458 states and 10177 transitions. [2024-11-08 16:07:44,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-11-08 16:07:44,694 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 9.5) internal successors, (209), 22 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-11-08 16:07:44,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:44,707 INFO L225 Difference]: With dead ends: 7458 [2024-11-08 16:07:44,707 INFO L226 Difference]: Without dead ends: 6730 [2024-11-08 16:07:44,712 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3651 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1650, Invalid=8450, Unknown=0, NotChecked=0, Total=10100 [2024-11-08 16:07:44,713 INFO L432 NwaCegarLoop]: 1516 mSDtfsCounter, 18166 mSDsluCounter, 6564 mSDsCounter, 0 mSdLazyCounter, 1671 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18166 SdHoareTripleChecker+Valid, 8080 SdHoareTripleChecker+Invalid, 1746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:44,713 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18166 Valid, 8080 Invalid, 1746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1671 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-08 16:07:44,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6730 states. [2024-11-08 16:07:44,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6730 to 6143. [2024-11-08 16:07:44,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6143 states, 6141 states have (on average 1.3623188405797102) internal successors, (8366), 6142 states have internal predecessors, (8366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:44,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6143 states to 6143 states and 8366 transitions. [2024-11-08 16:07:44,914 INFO L78 Accepts]: Start accepts. Automaton has 6143 states and 8366 transitions. Word has length 74 [2024-11-08 16:07:44,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:44,915 INFO L471 AbstractCegarLoop]: Abstraction has 6143 states and 8366 transitions. [2024-11-08 16:07:44,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 9.5) internal successors, (209), 22 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:44,915 INFO L276 IsEmpty]: Start isEmpty. Operand 6143 states and 8366 transitions. [2024-11-08 16:07:44,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-08 16:07:44,916 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:44,917 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:07:44,939 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 16:07:45,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:07:45,118 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:45,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:45,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1182538012, now seen corresponding path program 1 times [2024-11-08 16:07:45,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:45,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881884620] [2024-11-08 16:07:45,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:45,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:45,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:47,675 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:47,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:47,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881884620] [2024-11-08 16:07:47,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881884620] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:07:47,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374344818] [2024-11-08 16:07:47,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:47,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:07:47,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:07:47,678 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:07:47,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 16:07:47,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:47,832 INFO L255 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-08 16:07:47,835 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:07:48,352 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:48,352 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:07:49,792 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:49,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374344818] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:07:49,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:07:49,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2024-11-08 16:07:49,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126337393] [2024-11-08 16:07:49,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:07:49,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-08 16:07:49,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:49,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-08 16:07:49,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=649, Unknown=0, NotChecked=0, Total=756 [2024-11-08 16:07:49,795 INFO L87 Difference]: Start difference. First operand 6143 states and 8366 transitions. Second operand has 28 states, 28 states have (on average 6.892857142857143) internal successors, (193), 27 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:51,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:51,766 INFO L93 Difference]: Finished difference Result 23144 states and 30280 transitions. [2024-11-08 16:07:51,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-08 16:07:51,767 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.892857142857143) internal successors, (193), 27 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-08 16:07:51,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:51,798 INFO L225 Difference]: With dead ends: 23144 [2024-11-08 16:07:51,798 INFO L226 Difference]: Without dead ends: 18761 [2024-11-08 16:07:51,805 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=582, Invalid=2388, Unknown=0, NotChecked=0, Total=2970 [2024-11-08 16:07:51,806 INFO L432 NwaCegarLoop]: 1501 mSDtfsCounter, 15457 mSDsluCounter, 6606 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15457 SdHoareTripleChecker+Valid, 8107 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:51,807 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15457 Valid, 8107 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 16:07:51,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18761 states. [2024-11-08 16:07:52,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18761 to 18625. [2024-11-08 16:07:52,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18625 states, 18623 states have (on average 1.3033345862642969) internal successors, (24272), 18624 states have internal predecessors, (24272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:52,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18625 states to 18625 states and 24272 transitions. [2024-11-08 16:07:52,352 INFO L78 Accepts]: Start accepts. Automaton has 18625 states and 24272 transitions. Word has length 75 [2024-11-08 16:07:52,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:52,353 INFO L471 AbstractCegarLoop]: Abstraction has 18625 states and 24272 transitions. [2024-11-08 16:07:52,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.892857142857143) internal successors, (193), 27 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:52,353 INFO L276 IsEmpty]: Start isEmpty. Operand 18625 states and 24272 transitions. [2024-11-08 16:07:52,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-08 16:07:52,355 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:52,356 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:07:52,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 16:07:52,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-08 16:07:52,560 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:52,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:52,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1063832804, now seen corresponding path program 1 times [2024-11-08 16:07:52,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:52,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244934181] [2024-11-08 16:07:52,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:52,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:52,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:53,340 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:53,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:53,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244934181] [2024-11-08 16:07:53,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244934181] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:07:53,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615706709] [2024-11-08 16:07:53,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:53,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:07:53,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:07:53,344 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:07:53,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 16:07:53,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:53,494 INFO L255 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-08 16:07:53,498 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:07:54,312 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:54,312 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:07:56,270 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:56,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615706709] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:07:56,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:07:56,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 28 [2024-11-08 16:07:56,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608499234] [2024-11-08 16:07:56,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:07:56,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-08 16:07:56,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:56,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-08 16:07:56,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=667, Unknown=0, NotChecked=0, Total=756 [2024-11-08 16:07:56,273 INFO L87 Difference]: Start difference. First operand 18625 states and 24272 transitions. Second operand has 28 states, 28 states have (on average 6.964285714285714) internal successors, (195), 28 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:59,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:59,396 INFO L93 Difference]: Finished difference Result 32273 states and 41624 transitions. [2024-11-08 16:07:59,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-08 16:07:59,396 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.964285714285714) internal successors, (195), 28 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-08 16:07:59,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:59,416 INFO L225 Difference]: With dead ends: 32273 [2024-11-08 16:07:59,416 INFO L226 Difference]: Without dead ends: 16608 [2024-11-08 16:07:59,426 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 648 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=702, Invalid=2604, Unknown=0, NotChecked=0, Total=3306 [2024-11-08 16:07:59,427 INFO L432 NwaCegarLoop]: 1491 mSDtfsCounter, 15012 mSDsluCounter, 12129 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15012 SdHoareTripleChecker+Valid, 13620 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:59,429 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15012 Valid, 13620 Invalid, 686 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [43 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 16:07:59,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16608 states. [2024-11-08 16:07:59,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16608 to 15766. [2024-11-08 16:07:59,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15766 states, 15764 states have (on average 1.2856508500380615) internal successors, (20267), 15765 states have internal predecessors, (20267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:59,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15766 states to 15766 states and 20267 transitions. [2024-11-08 16:07:59,967 INFO L78 Accepts]: Start accepts. Automaton has 15766 states and 20267 transitions. Word has length 75 [2024-11-08 16:07:59,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:59,967 INFO L471 AbstractCegarLoop]: Abstraction has 15766 states and 20267 transitions. [2024-11-08 16:07:59,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.964285714285714) internal successors, (195), 28 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:59,968 INFO L276 IsEmpty]: Start isEmpty. Operand 15766 states and 20267 transitions. [2024-11-08 16:07:59,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-08 16:07:59,970 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:59,970 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:07:59,992 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 16:08:00,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:08:00,171 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:08:00,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:08:00,172 INFO L85 PathProgramCache]: Analyzing trace with hash -431742720, now seen corresponding path program 1 times [2024-11-08 16:08:00,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:08:00,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471907205] [2024-11-08 16:08:00,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:08:00,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:08:00,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:08:00,649 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:08:00,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:08:00,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471907205] [2024-11-08 16:08:00,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471907205] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:08:00,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063588298] [2024-11-08 16:08:00,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:08:00,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:08:00,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:08:00,652 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:08:00,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 16:08:00,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:08:00,820 INFO L255 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-08 16:08:00,823 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:08:01,554 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:08:01,555 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:08:02,812 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:08:02,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063588298] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:08:02,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:08:02,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 13] total 30 [2024-11-08 16:08:02,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199165404] [2024-11-08 16:08:02,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:08:02,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-08 16:08:02,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:08:02,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-08 16:08:02,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=708, Unknown=0, NotChecked=0, Total=870 [2024-11-08 16:08:02,816 INFO L87 Difference]: Start difference. First operand 15766 states and 20267 transitions. Second operand has 30 states, 30 states have (on average 6.6) internal successors, (198), 30 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:08:04,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:08:04,188 INFO L93 Difference]: Finished difference Result 29047 states and 37014 transitions. [2024-11-08 16:08:04,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-08 16:08:04,188 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 6.6) internal successors, (198), 30 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-08 16:08:04,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:08:04,210 INFO L225 Difference]: With dead ends: 29047 [2024-11-08 16:08:04,211 INFO L226 Difference]: Without dead ends: 16334 [2024-11-08 16:08:04,223 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=472, Invalid=1508, Unknown=0, NotChecked=0, Total=1980 [2024-11-08 16:08:04,223 INFO L432 NwaCegarLoop]: 1500 mSDtfsCounter, 19527 mSDsluCounter, 7740 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19527 SdHoareTripleChecker+Valid, 9240 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 16:08:04,224 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19527 Valid, 9240 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 16:08:04,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16334 states. [2024-11-08 16:08:05,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16334 to 15386. [2024-11-08 16:08:05,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15386 states, 15384 states have (on average 1.2743109724388975) internal successors, (19604), 15385 states have internal predecessors, (19604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:08:05,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15386 states to 15386 states and 19604 transitions. [2024-11-08 16:08:05,054 INFO L78 Accepts]: Start accepts. Automaton has 15386 states and 19604 transitions. Word has length 76 [2024-11-08 16:08:05,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:08:05,055 INFO L471 AbstractCegarLoop]: Abstraction has 15386 states and 19604 transitions. [2024-11-08 16:08:05,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.6) internal successors, (198), 30 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:08:05,055 INFO L276 IsEmpty]: Start isEmpty. Operand 15386 states and 19604 transitions. [2024-11-08 16:08:05,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-08 16:08:05,057 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:08:05,057 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:08:05,079 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 16:08:05,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:08:05,262 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:08:05,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:08:05,262 INFO L85 PathProgramCache]: Analyzing trace with hash 490402816, now seen corresponding path program 1 times [2024-11-08 16:08:05,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:08:05,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486821896] [2024-11-08 16:08:05,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:08:05,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:08:05,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:08:05,648 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:08:05,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:08:05,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486821896] [2024-11-08 16:08:05,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486821896] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:08:05,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550272270] [2024-11-08 16:08:05,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:08:05,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:08:05,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:08:05,651 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:08:05,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 16:08:05,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:08:05,791 INFO L255 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 16:08:05,795 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:08:06,244 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:08:06,245 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:08:06,970 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:08:06,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550272270] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:08:06,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:08:06,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2024-11-08 16:08:06,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247471751] [2024-11-08 16:08:06,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:08:06,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-08 16:08:06,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:08:06,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-08 16:08:06,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2024-11-08 16:08:06,972 INFO L87 Difference]: Start difference. First operand 15386 states and 19604 transitions. Second operand has 23 states, 23 states have (on average 7.217391304347826) internal successors, (166), 22 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:08:08,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:08:08,295 INFO L93 Difference]: Finished difference Result 42949 states and 54065 transitions. [2024-11-08 16:08:08,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 16:08:08,296 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.217391304347826) internal successors, (166), 22 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-08 16:08:08,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:08:08,327 INFO L225 Difference]: With dead ends: 42949 [2024-11-08 16:08:08,327 INFO L226 Difference]: Without dead ends: 30416 [2024-11-08 16:08:08,340 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=269, Invalid=787, Unknown=0, NotChecked=0, Total=1056 [2024-11-08 16:08:08,341 INFO L432 NwaCegarLoop]: 1520 mSDtfsCounter, 10594 mSDsluCounter, 3273 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10594 SdHoareTripleChecker+Valid, 4793 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 16:08:08,341 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10594 Valid, 4793 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 16:08:08,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30416 states. [2024-11-08 16:08:09,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30416 to 30012. [2024-11-08 16:08:09,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30012 states, 30010 states have (on average 1.2440186604465178) internal successors, (37333), 30011 states have internal predecessors, (37333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:08:09,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30012 states to 30012 states and 37333 transitions. [2024-11-08 16:08:09,410 INFO L78 Accepts]: Start accepts. Automaton has 30012 states and 37333 transitions. Word has length 76 [2024-11-08 16:08:09,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:08:09,411 INFO L471 AbstractCegarLoop]: Abstraction has 30012 states and 37333 transitions. [2024-11-08 16:08:09,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.217391304347826) internal successors, (166), 22 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:08:09,411 INFO L276 IsEmpty]: Start isEmpty. Operand 30012 states and 37333 transitions. [2024-11-08 16:08:09,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-08 16:08:09,413 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:08:09,413 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:08:09,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 16:08:09,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:08:09,614 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:08:09,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:08:09,615 INFO L85 PathProgramCache]: Analyzing trace with hash 338355724, now seen corresponding path program 1 times [2024-11-08 16:08:09,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:08:09,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693107889] [2024-11-08 16:08:09,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:08:09,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:08:09,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:08:12,030 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:08:12,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:08:12,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693107889] [2024-11-08 16:08:12,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693107889] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:08:12,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473920812] [2024-11-08 16:08:12,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:08:12,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:08:12,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:08:12,032 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:08:12,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 16:08:12,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:08:12,182 INFO L255 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-08 16:08:12,185 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:08:18,097 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:08:18,097 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:08:26,593 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:08:26,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473920812] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:08:26,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:08:26,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 28, 25] total 74 [2024-11-08 16:08:26,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006574623] [2024-11-08 16:08:26,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:08:26,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-11-08 16:08:26,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:08:26,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-11-08 16:08:26,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=676, Invalid=4726, Unknown=0, NotChecked=0, Total=5402 [2024-11-08 16:08:26,598 INFO L87 Difference]: Start difference. First operand 30012 states and 37333 transitions. Second operand has 74 states, 74 states have (on average 2.9324324324324325) internal successors, (217), 74 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:10:19,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:10:19,970 INFO L93 Difference]: Finished difference Result 84342 states and 104502 transitions. [2024-11-08 16:10:19,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 269 states. [2024-11-08 16:10:19,971 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.9324324324324325) internal successors, (217), 74 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-08 16:10:19,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:10:20,025 INFO L225 Difference]: With dead ends: 84342 [2024-11-08 16:10:20,025 INFO L226 Difference]: Without dead ends: 68469 [2024-11-08 16:10:20,049 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 325 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40503 ImplicationChecksByTransitivity, 105.4s TimeCoverageRelationStatistics Valid=14817, Invalid=91785, Unknown=0, NotChecked=0, Total=106602 [2024-11-08 16:10:20,050 INFO L432 NwaCegarLoop]: 1545 mSDtfsCounter, 26629 mSDsluCounter, 30289 mSDsCounter, 0 mSdLazyCounter, 7938 mSolverCounterSat, 310 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26629 SdHoareTripleChecker+Valid, 31834 SdHoareTripleChecker+Invalid, 8248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 310 IncrementalHoareTripleChecker+Valid, 7938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2024-11-08 16:10:20,050 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26629 Valid, 31834 Invalid, 8248 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [310 Valid, 7938 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time] [2024-11-08 16:10:20,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68469 states. [2024-11-08 16:10:22,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68469 to 37101. [2024-11-08 16:10:22,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37101 states, 37099 states have (on average 1.2426750047171082) internal successors, (46102), 37100 states have internal predecessors, (46102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:10:22,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37101 states to 37101 states and 46102 transitions. [2024-11-08 16:10:22,235 INFO L78 Accepts]: Start accepts. Automaton has 37101 states and 46102 transitions. Word has length 77 [2024-11-08 16:10:22,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:10:22,235 INFO L471 AbstractCegarLoop]: Abstraction has 37101 states and 46102 transitions. [2024-11-08 16:10:22,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 2.9324324324324325) internal successors, (217), 74 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:10:22,236 INFO L276 IsEmpty]: Start isEmpty. Operand 37101 states and 46102 transitions. [2024-11-08 16:10:22,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-08 16:10:22,237 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:10:22,238 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:10:22,260 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 16:10:22,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-08 16:10:22,442 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:10:22,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:10:22,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1331806592, now seen corresponding path program 1 times [2024-11-08 16:10:22,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:10:22,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641386300] [2024-11-08 16:10:22,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:10:22,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:10:22,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:23,912 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:10:23,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:10:23,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641386300] [2024-11-08 16:10:23,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641386300] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:10:23,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52812619] [2024-11-08 16:10:23,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:10:23,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:10:23,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:10:23,915 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:10:23,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 16:10:24,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:24,062 INFO L255 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-08 16:10:24,065 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:10:25,495 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:10:25,495 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:10:26,798 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:10:26,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52812619] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:10:26,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:10:26,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 13] total 36 [2024-11-08 16:10:26,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566885554] [2024-11-08 16:10:26,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:10:26,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-08 16:10:26,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:10:26,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-08 16:10:26,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1122, Unknown=0, NotChecked=0, Total=1260 [2024-11-08 16:10:26,800 INFO L87 Difference]: Start difference. First operand 37101 states and 46102 transitions. Second operand has 36 states, 36 states have (on average 5.277777777777778) internal successors, (190), 36 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:10:32,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:10:32,263 INFO L93 Difference]: Finished difference Result 64296 states and 79720 transitions. [2024-11-08 16:10:32,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-08 16:10:32,264 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.277777777777778) internal successors, (190), 36 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-08 16:10:32,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:10:32,303 INFO L225 Difference]: With dead ends: 64296 [2024-11-08 16:10:32,303 INFO L226 Difference]: Without dead ends: 49514 [2024-11-08 16:10:32,312 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 845 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=867, Invalid=3293, Unknown=0, NotChecked=0, Total=4160 [2024-11-08 16:10:32,313 INFO L432 NwaCegarLoop]: 1531 mSDtfsCounter, 13218 mSDsluCounter, 14346 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13218 SdHoareTripleChecker+Valid, 15877 SdHoareTripleChecker+Invalid, 1315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:10:32,314 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13218 Valid, 15877 Invalid, 1315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1273 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-08 16:10:32,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49514 states. [2024-11-08 16:10:33,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49514 to 31752. [2024-11-08 16:10:33,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31752 states, 31750 states have (on average 1.2418582677165355) internal successors, (39429), 31751 states have internal predecessors, (39429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:10:34,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31752 states to 31752 states and 39429 transitions. [2024-11-08 16:10:34,024 INFO L78 Accepts]: Start accepts. Automaton has 31752 states and 39429 transitions. Word has length 78 [2024-11-08 16:10:34,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:10:34,025 INFO L471 AbstractCegarLoop]: Abstraction has 31752 states and 39429 transitions. [2024-11-08 16:10:34,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.277777777777778) internal successors, (190), 36 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:10:34,025 INFO L276 IsEmpty]: Start isEmpty. Operand 31752 states and 39429 transitions. [2024-11-08 16:10:34,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-08 16:10:34,026 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:10:34,027 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:10:34,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 16:10:34,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:10:34,227 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:10:34,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:10:34,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1324254270, now seen corresponding path program 1 times [2024-11-08 16:10:34,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:10:34,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390813404] [2024-11-08 16:10:34,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:10:34,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:10:34,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:35,071 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:10:35,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:10:35,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390813404] [2024-11-08 16:10:35,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390813404] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:10:35,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69088970] [2024-11-08 16:10:35,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:10:35,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:10:35,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:10:35,073 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:10:35,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 16:10:35,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:35,220 INFO L255 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-08 16:10:35,222 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:10:37,531 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:10:37,531 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:10:40,844 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:10:40,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69088970] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:10:40,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:10:40,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 22, 20] total 49 [2024-11-08 16:10:40,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789963564] [2024-11-08 16:10:40,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:10:40,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-08 16:10:40,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:10:40,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-08 16:10:40,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=1995, Unknown=0, NotChecked=0, Total=2352 [2024-11-08 16:10:40,848 INFO L87 Difference]: Start difference. First operand 31752 states and 39429 transitions. Second operand has 49 states, 49 states have (on average 4.1020408163265305) internal successors, (201), 49 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:10:47,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:10:47,668 INFO L93 Difference]: Finished difference Result 44781 states and 55402 transitions. [2024-11-08 16:10:47,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-08 16:10:47,668 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 4.1020408163265305) internal successors, (201), 49 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-11-08 16:10:47,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:10:47,696 INFO L225 Difference]: With dead ends: 44781 [2024-11-08 16:10:47,696 INFO L226 Difference]: Without dead ends: 30840 [2024-11-08 16:10:47,708 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2392 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1833, Invalid=6357, Unknown=0, NotChecked=0, Total=8190 [2024-11-08 16:10:47,708 INFO L432 NwaCegarLoop]: 1544 mSDtfsCounter, 20345 mSDsluCounter, 14406 mSDsCounter, 0 mSdLazyCounter, 1602 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20345 SdHoareTripleChecker+Valid, 15950 SdHoareTripleChecker+Invalid, 1660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-08 16:10:47,708 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20345 Valid, 15950 Invalid, 1660 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 1602 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-08 16:10:47,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30840 states. [2024-11-08 16:10:49,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30840 to 24099. [2024-11-08 16:10:49,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24099 states, 24097 states have (on average 1.2479146781757064) internal successors, (30071), 24098 states have internal predecessors, (30071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:10:49,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24099 states to 24099 states and 30071 transitions. [2024-11-08 16:10:49,752 INFO L78 Accepts]: Start accepts. Automaton has 24099 states and 30071 transitions. Word has length 79 [2024-11-08 16:10:49,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:10:49,753 INFO L471 AbstractCegarLoop]: Abstraction has 24099 states and 30071 transitions. [2024-11-08 16:10:49,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 4.1020408163265305) internal successors, (201), 49 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:10:49,753 INFO L276 IsEmpty]: Start isEmpty. Operand 24099 states and 30071 transitions. [2024-11-08 16:10:49,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-08 16:10:49,757 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:10:49,758 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:10:49,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-08 16:10:49,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:10:49,958 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:10:49,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:10:49,959 INFO L85 PathProgramCache]: Analyzing trace with hash -585728908, now seen corresponding path program 1 times [2024-11-08 16:10:49,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:10:49,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731964564] [2024-11-08 16:10:49,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:10:49,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:10:50,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:51,036 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 42 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:10:51,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:10:51,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731964564] [2024-11-08 16:10:51,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731964564] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:10:51,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338287230] [2024-11-08 16:10:51,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:10:51,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:10:51,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:10:51,038 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:10:51,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 16:10:51,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:51,225 INFO L255 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-08 16:10:51,228 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:10:52,816 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 23 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:10:52,817 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:10:55,106 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 17 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:10:55,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338287230] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:10:55,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:10:55,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 11] total 33 [2024-11-08 16:10:55,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746950660] [2024-11-08 16:10:55,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:10:55,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-08 16:10:55,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:10:55,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-08 16:10:55,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=932, Unknown=0, NotChecked=0, Total=1056 [2024-11-08 16:10:55,110 INFO L87 Difference]: Start difference. First operand 24099 states and 30071 transitions. Second operand has 33 states, 33 states have (on average 10.424242424242424) internal successors, (344), 33 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:11:01,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:11:01,687 INFO L93 Difference]: Finished difference Result 45469 states and 55903 transitions. [2024-11-08 16:11:01,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-08 16:11:01,688 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 10.424242424242424) internal successors, (344), 33 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2024-11-08 16:11:01,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:11:01,722 INFO L225 Difference]: With dead ends: 45469 [2024-11-08 16:11:01,722 INFO L226 Difference]: Without dead ends: 34855 [2024-11-08 16:11:01,732 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1038 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1076, Invalid=4474, Unknown=0, NotChecked=0, Total=5550 [2024-11-08 16:11:01,733 INFO L432 NwaCegarLoop]: 1521 mSDtfsCounter, 18400 mSDsluCounter, 17216 mSDsCounter, 0 mSdLazyCounter, 1549 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18400 SdHoareTripleChecker+Valid, 18737 SdHoareTripleChecker+Invalid, 1596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:11:01,733 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18400 Valid, 18737 Invalid, 1596 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 1549 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-08 16:11:01,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34855 states. [2024-11-08 16:11:03,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34855 to 24759. [2024-11-08 16:11:03,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24759 states, 24757 states have (on average 1.2397301773235851) internal successors, (30692), 24758 states have internal predecessors, (30692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:11:03,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24759 states to 24759 states and 30692 transitions. [2024-11-08 16:11:03,755 INFO L78 Accepts]: Start accepts. Automaton has 24759 states and 30692 transitions. Word has length 124 [2024-11-08 16:11:03,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:11:03,756 INFO L471 AbstractCegarLoop]: Abstraction has 24759 states and 30692 transitions. [2024-11-08 16:11:03,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 10.424242424242424) internal successors, (344), 33 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:11:03,756 INFO L276 IsEmpty]: Start isEmpty. Operand 24759 states and 30692 transitions. [2024-11-08 16:11:03,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-08 16:11:03,762 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:11:03,762 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:11:03,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 16:11:03,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-08 16:11:03,963 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:11:03,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:11:03,964 INFO L85 PathProgramCache]: Analyzing trace with hash -406572592, now seen corresponding path program 1 times [2024-11-08 16:11:03,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:11:03,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800322339] [2024-11-08 16:11:03,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:11:03,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:11:04,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:11:05,348 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 25 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:11:05,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:11:05,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800322339] [2024-11-08 16:11:05,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800322339] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:11:05,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010166432] [2024-11-08 16:11:05,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:11:05,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:11:05,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:11:05,352 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:11:05,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 16:11:05,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:11:05,563 INFO L255 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-08 16:11:05,565 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:11:07,322 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 33 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:11:07,322 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:11:13,459 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 33 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:11:13,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010166432] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:11:13,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:11:13,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19, 19] total 51 [2024-11-08 16:11:13,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366835645] [2024-11-08 16:11:13,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:11:13,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-08 16:11:13,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:11:13,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-08 16:11:13,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=2351, Unknown=0, NotChecked=0, Total=2550 [2024-11-08 16:11:13,463 INFO L87 Difference]: Start difference. First operand 24759 states and 30692 transitions. Second operand has 51 states, 51 states have (on average 6.764705882352941) internal successors, (345), 51 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:11:50,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:11:50,264 INFO L93 Difference]: Finished difference Result 71799 states and 88434 transitions. [2024-11-08 16:11:50,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2024-11-08 16:11:50,264 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 6.764705882352941) internal successors, (345), 51 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2024-11-08 16:11:50,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:11:50,313 INFO L225 Difference]: With dead ends: 71799 [2024-11-08 16:11:50,313 INFO L226 Difference]: Without dead ends: 57520 [2024-11-08 16:11:50,324 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11274 ImplicationChecksByTransitivity, 31.7s TimeCoverageRelationStatistics Valid=5951, Invalid=29581, Unknown=0, NotChecked=0, Total=35532 [2024-11-08 16:11:50,325 INFO L432 NwaCegarLoop]: 1596 mSDtfsCounter, 34930 mSDsluCounter, 20110 mSDsCounter, 0 mSdLazyCounter, 2947 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34930 SdHoareTripleChecker+Valid, 21706 SdHoareTripleChecker+Invalid, 3089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 2947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-08 16:11:50,325 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34930 Valid, 21706 Invalid, 3089 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [142 Valid, 2947 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-08 16:11:50,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57520 states. [2024-11-08 16:11:52,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57520 to 27311. [2024-11-08 16:11:52,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27311 states, 27309 states have (on average 1.2167783514592259) internal successors, (33229), 27310 states have internal predecessors, (33229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:11:52,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27311 states to 27311 states and 33229 transitions. [2024-11-08 16:11:52,531 INFO L78 Accepts]: Start accepts. Automaton has 27311 states and 33229 transitions. Word has length 125 [2024-11-08 16:11:52,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:11:52,535 INFO L471 AbstractCegarLoop]: Abstraction has 27311 states and 33229 transitions. [2024-11-08 16:11:52,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 6.764705882352941) internal successors, (345), 51 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:11:52,536 INFO L276 IsEmpty]: Start isEmpty. Operand 27311 states and 33229 transitions. [2024-11-08 16:11:52,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-08 16:11:52,545 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:11:52,545 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:11:52,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-08 16:11:52,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-08 16:11:52,746 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:11:52,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:11:52,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1565094272, now seen corresponding path program 1 times [2024-11-08 16:11:52,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:11:52,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188022695] [2024-11-08 16:11:52,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:11:52,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:11:52,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:11:55,789 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:11:55,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:11:55,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188022695] [2024-11-08 16:11:55,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188022695] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:11:55,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263750975] [2024-11-08 16:11:55,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:11:55,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:11:55,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:11:55,792 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:11:55,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 16:11:56,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:11:56,011 INFO L255 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 16:11:56,014 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:11:57,575 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 21 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:11:57,575 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:11:59,884 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:11:59,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263750975] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:11:59,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:11:59,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 11, 11] total 38 [2024-11-08 16:11:59,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962356682] [2024-11-08 16:11:59,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:11:59,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-08 16:11:59,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:11:59,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-08 16:11:59,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1342, Unknown=0, NotChecked=0, Total=1482 [2024-11-08 16:11:59,887 INFO L87 Difference]: Start difference. First operand 27311 states and 33229 transitions. Second operand has 39 states, 39 states have (on average 8.0) internal successors, (312), 38 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:12:18,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:12:18,278 INFO L93 Difference]: Finished difference Result 52399 states and 63180 transitions. [2024-11-08 16:12:18,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2024-11-08 16:12:18,278 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 8.0) internal successors, (312), 38 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2024-11-08 16:12:18,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:12:18,338 INFO L225 Difference]: With dead ends: 52399 [2024-11-08 16:12:18,338 INFO L226 Difference]: Without dead ends: 33836 [2024-11-08 16:12:18,360 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3481 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=2810, Invalid=10762, Unknown=0, NotChecked=0, Total=13572 [2024-11-08 16:12:18,361 INFO L432 NwaCegarLoop]: 1592 mSDtfsCounter, 24749 mSDsluCounter, 17806 mSDsCounter, 0 mSdLazyCounter, 2717 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24749 SdHoareTripleChecker+Valid, 19398 SdHoareTripleChecker+Invalid, 2770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 2717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-08 16:12:18,362 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24749 Valid, 19398 Invalid, 2770 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [53 Valid, 2717 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-08 16:12:18,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33836 states. [2024-11-08 16:12:20,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33836 to 22650. [2024-11-08 16:12:20,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22650 states, 22648 states have (on average 1.2099964676792654) internal successors, (27404), 22649 states have internal predecessors, (27404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:12:20,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22650 states to 22650 states and 27404 transitions. [2024-11-08 16:12:20,637 INFO L78 Accepts]: Start accepts. Automaton has 22650 states and 27404 transitions. Word has length 125 [2024-11-08 16:12:20,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:12:20,638 INFO L471 AbstractCegarLoop]: Abstraction has 22650 states and 27404 transitions. [2024-11-08 16:12:20,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 8.0) internal successors, (312), 38 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:12:20,638 INFO L276 IsEmpty]: Start isEmpty. Operand 22650 states and 27404 transitions. [2024-11-08 16:12:20,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-08 16:12:20,643 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:12:20,643 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:12:20,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-08 16:12:20,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:12:20,844 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:12:20,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:12:20,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1963072020, now seen corresponding path program 1 times [2024-11-08 16:12:20,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:12:20,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562013487] [2024-11-08 16:12:20,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:20,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:12:20,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:22,373 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 34 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:12:22,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:12:22,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562013487] [2024-11-08 16:12:22,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562013487] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:12:22,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992587931] [2024-11-08 16:12:22,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:22,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:12:22,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:12:22,376 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:12:22,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 16:12:22,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:22,598 INFO L255 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 16:12:22,600 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:12:23,823 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 37 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:12:23,824 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:12:26,281 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 34 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:12:26,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992587931] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:12:26,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:12:26,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 31 [2024-11-08 16:12:26,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296431252] [2024-11-08 16:12:26,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:12:26,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-08 16:12:26,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:12:26,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-08 16:12:26,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=869, Unknown=0, NotChecked=0, Total=992 [2024-11-08 16:12:26,284 INFO L87 Difference]: Start difference. First operand 22650 states and 27404 transitions. Second operand has 32 states, 32 states have (on average 9.40625) internal successors, (301), 31 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:12:32,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:12:32,985 INFO L93 Difference]: Finished difference Result 46933 states and 56363 transitions. [2024-11-08 16:12:32,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-08 16:12:32,986 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 9.40625) internal successors, (301), 31 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2024-11-08 16:12:32,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:12:33,021 INFO L225 Difference]: With dead ends: 46933 [2024-11-08 16:12:33,021 INFO L226 Difference]: Without dead ends: 38774 [2024-11-08 16:12:33,032 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1313 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1200, Invalid=4350, Unknown=0, NotChecked=0, Total=5550 [2024-11-08 16:12:33,033 INFO L432 NwaCegarLoop]: 1577 mSDtfsCounter, 20903 mSDsluCounter, 11406 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20903 SdHoareTripleChecker+Valid, 12983 SdHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 16:12:33,033 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20903 Valid, 12983 Invalid, 1136 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 16:12:33,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38774 states. [2024-11-08 16:12:35,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38774 to 22650. [2024-11-08 16:12:35,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22650 states, 22648 states have (on average 1.2049187566231014) internal successors, (27289), 22649 states have internal predecessors, (27289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:12:35,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22650 states to 22650 states and 27289 transitions. [2024-11-08 16:12:35,295 INFO L78 Accepts]: Start accepts. Automaton has 22650 states and 27289 transitions. Word has length 125 [2024-11-08 16:12:35,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:12:35,296 INFO L471 AbstractCegarLoop]: Abstraction has 22650 states and 27289 transitions. [2024-11-08 16:12:35,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 9.40625) internal successors, (301), 31 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:12:35,296 INFO L276 IsEmpty]: Start isEmpty. Operand 22650 states and 27289 transitions. [2024-11-08 16:12:35,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-08 16:12:35,299 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:12:35,299 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:12:35,316 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-08 16:12:35,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:12:35,500 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:12:35,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:12:35,500 INFO L85 PathProgramCache]: Analyzing trace with hash -255976000, now seen corresponding path program 1 times [2024-11-08 16:12:35,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:12:35,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305888763] [2024-11-08 16:12:35,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:35,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:12:35,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:37,715 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 44 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:12:37,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:12:37,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305888763] [2024-11-08 16:12:37,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305888763] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:12:37,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008544684] [2024-11-08 16:12:37,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:37,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:12:37,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:12:37,717 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:12:37,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 16:12:37,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:37,936 INFO L255 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-08 16:12:37,939 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:12:44,472 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 44 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:12:44,473 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:12:56,360 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 32 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:12:56,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008544684] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:12:56,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:12:56,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 28, 25] total 76 [2024-11-08 16:12:56,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749506111] [2024-11-08 16:12:56,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:12:56,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-11-08 16:12:56,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:12:56,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-11-08 16:12:56,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=621, Invalid=5079, Unknown=0, NotChecked=0, Total=5700 [2024-11-08 16:12:56,364 INFO L87 Difference]: Start difference. First operand 22650 states and 27289 transitions. Second operand has 76 states, 76 states have (on average 4.578947368421052) internal successors, (348), 76 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:15:00,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:15:00,513 INFO L93 Difference]: Finished difference Result 85281 states and 101386 transitions. [2024-11-08 16:15:00,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 244 states. [2024-11-08 16:15:00,514 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 4.578947368421052) internal successors, (348), 76 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2024-11-08 16:15:00,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:15:00,572 INFO L225 Difference]: With dead ends: 85281 [2024-11-08 16:15:00,572 INFO L226 Difference]: Without dead ends: 78191 [2024-11-08 16:15:00,587 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 316 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38736 ImplicationChecksByTransitivity, 115.8s TimeCoverageRelationStatistics Valid=15680, Invalid=85126, Unknown=0, NotChecked=0, Total=100806 [2024-11-08 16:15:00,587 INFO L432 NwaCegarLoop]: 1601 mSDtfsCounter, 40084 mSDsluCounter, 38731 mSDsCounter, 0 mSdLazyCounter, 5116 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40084 SdHoareTripleChecker+Valid, 40332 SdHoareTripleChecker+Invalid, 5386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 5116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2024-11-08 16:15:00,588 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40084 Valid, 40332 Invalid, 5386 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [270 Valid, 5116 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2024-11-08 16:15:00,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78191 states. [2024-11-08 16:15:04,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78191 to 36276. [2024-11-08 16:15:04,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36276 states, 36274 states have (on average 1.19945415449082) internal successors, (43509), 36275 states have internal predecessors, (43509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:15:04,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36276 states to 36276 states and 43509 transitions. [2024-11-08 16:15:04,385 INFO L78 Accepts]: Start accepts. Automaton has 36276 states and 43509 transitions. Word has length 126 [2024-11-08 16:15:04,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:15:04,386 INFO L471 AbstractCegarLoop]: Abstraction has 36276 states and 43509 transitions. [2024-11-08 16:15:04,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 4.578947368421052) internal successors, (348), 76 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:15:04,386 INFO L276 IsEmpty]: Start isEmpty. Operand 36276 states and 43509 transitions. [2024-11-08 16:15:04,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-08 16:15:04,388 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:15:04,389 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:15:04,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-08 16:15:04,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:15:04,589 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:15:04,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:15:04,590 INFO L85 PathProgramCache]: Analyzing trace with hash 887682080, now seen corresponding path program 1 times [2024-11-08 16:15:04,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:15:04,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759400008] [2024-11-08 16:15:04,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:15:04,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:15:04,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:15:06,074 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 16 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:15:06,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:15:06,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759400008] [2024-11-08 16:15:06,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759400008] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:15:06,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72975589] [2024-11-08 16:15:06,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:15:06,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:15:06,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:15:06,075 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:15:06,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 16:15:06,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:15:06,257 INFO L255 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-08 16:15:06,259 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:15:09,153 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 34 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:15:09,153 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:15:13,399 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 34 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:15:13,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72975589] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:15:13,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:15:13,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 16, 16] total 50 [2024-11-08 16:15:13,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078649760] [2024-11-08 16:15:13,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:15:13,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-08 16:15:13,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:15:13,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-08 16:15:13,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=2266, Unknown=0, NotChecked=0, Total=2450 [2024-11-08 16:15:13,402 INFO L87 Difference]: Start difference. First operand 36276 states and 43509 transitions. Second operand has 50 states, 50 states have (on average 7.06) internal successors, (353), 50 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:17:18,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:17:18,002 INFO L93 Difference]: Finished difference Result 190120 states and 223097 transitions. [2024-11-08 16:17:18,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 392 states. [2024-11-08 16:17:18,003 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 7.06) internal successors, (353), 50 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2024-11-08 16:17:18,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:17:18,249 INFO L225 Difference]: With dead ends: 190120 [2024-11-08 16:17:18,249 INFO L226 Difference]: Without dead ends: 174339 [2024-11-08 16:17:18,298 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 659 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 436 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79243 ImplicationChecksByTransitivity, 86.2s TimeCoverageRelationStatistics Valid=15325, Invalid=176081, Unknown=0, NotChecked=0, Total=191406 [2024-11-08 16:17:18,299 INFO L432 NwaCegarLoop]: 1873 mSDtfsCounter, 19455 mSDsluCounter, 42438 mSDsCounter, 0 mSdLazyCounter, 12595 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19455 SdHoareTripleChecker+Valid, 44311 SdHoareTripleChecker+Invalid, 12746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 12595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2024-11-08 16:17:18,299 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19455 Valid, 44311 Invalid, 12746 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [151 Valid, 12595 Invalid, 0 Unknown, 0 Unchecked, 12.8s Time] [2024-11-08 16:17:18,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174339 states. [2024-11-08 16:17:32,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174339 to 80453. [2024-11-08 16:17:32,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80453 states, 80451 states have (on average 1.18375160035301) internal successors, (95234), 80452 states have internal predecessors, (95234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:17:32,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80453 states to 80453 states and 95234 transitions. [2024-11-08 16:17:32,372 INFO L78 Accepts]: Start accepts. Automaton has 80453 states and 95234 transitions. Word has length 126 [2024-11-08 16:17:32,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:17:32,372 INFO L471 AbstractCegarLoop]: Abstraction has 80453 states and 95234 transitions. [2024-11-08 16:17:32,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 7.06) internal successors, (353), 50 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:17:32,373 INFO L276 IsEmpty]: Start isEmpty. Operand 80453 states and 95234 transitions. [2024-11-08 16:17:32,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-08 16:17:32,379 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:17:32,379 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:17:32,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-08 16:17:32,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-08 16:17:32,580 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:17:32,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:17:32,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1505220160, now seen corresponding path program 1 times [2024-11-08 16:17:32,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:17:32,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949439623] [2024-11-08 16:17:32,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:17:32,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:17:32,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:17:36,155 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 43 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:17:36,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:17:36,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949439623] [2024-11-08 16:17:36,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949439623] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:17:36,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668851828] [2024-11-08 16:17:36,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:17:36,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:17:36,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:17:36,157 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:17:36,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4cba62-0ace-4c3c-b1e1-f8530033c5d1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-08 16:17:36,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:17:36,364 INFO L255 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-08 16:17:36,366 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:17:42,211 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 25 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:17:42,211 INFO L311 TraceCheckSpWp]: Computing backward predicates...