./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/mono-crafted_3.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_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/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_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/mono-crafted_3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/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_f8365da5-e86f-4207-8cc2-048b785e3acf/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 4548c451706b7658e6a882e8eef66dc3c360e6aea0e4326d7cc0b87e2b58239c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 18:35:54,686 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 18:35:54,829 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 18:35:54,840 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 18:35:54,841 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 18:35:54,893 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 18:35:54,894 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 18:35:54,895 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 18:35:54,896 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 18:35:54,897 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 18:35:54,898 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 18:35:54,898 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 18:35:54,899 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 18:35:54,901 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 18:35:54,904 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 18:35:54,905 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 18:35:54,905 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 18:35:54,906 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 18:35:54,906 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 18:35:54,907 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 18:35:54,907 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 18:35:54,914 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 18:35:54,915 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 18:35:54,915 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 18:35:54,916 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 18:35:54,916 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 18:35:54,916 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 18:35:54,917 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 18:35:54,917 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 18:35:54,919 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 18:35:54,919 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 18:35:54,920 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 18:35:54,921 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:35:54,922 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 18:35:54,922 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 18:35:54,923 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 18:35:54,923 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 18:35:54,924 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 18:35:54,924 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 18:35:54,924 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 18:35:54,925 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 18:35:54,925 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 18:35:54,925 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_f8365da5-e86f-4207-8cc2-048b785e3acf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4548c451706b7658e6a882e8eef66dc3c360e6aea0e4326d7cc0b87e2b58239c [2024-11-08 18:35:55,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 18:35:55,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 18:35:55,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 18:35:55,354 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 18:35:55,354 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 18:35:55,356 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/loops-crafted-1/mono-crafted_3.c Unable to find full path for "g++" [2024-11-08 18:35:57,933 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 18:35:58,259 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 18:35:58,260 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/sv-benchmarks/c/loops-crafted-1/mono-crafted_3.c [2024-11-08 18:35:58,267 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/data/f85ceed11/19de559661f7471e9b9f6f3a6d2801ea/FLAG6a28d8566 [2024-11-08 18:35:58,529 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/data/f85ceed11/19de559661f7471e9b9f6f3a6d2801ea [2024-11-08 18:35:58,533 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 18:35:58,535 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 18:35:58,537 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 18:35:58,537 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 18:35:58,549 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 18:35:58,550 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:35:58" (1/1) ... [2024-11-08 18:35:58,552 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@316f3095 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:35:58, skipping insertion in model container [2024-11-08 18:35:58,552 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:35:58" (1/1) ... [2024-11-08 18:35:58,577 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 18:35:58,796 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_f8365da5-e86f-4207-8cc2-048b785e3acf/sv-benchmarks/c/loops-crafted-1/mono-crafted_3.c[318,331] [2024-11-08 18:35:58,819 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:35:58,836 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 18:35:58,853 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_f8365da5-e86f-4207-8cc2-048b785e3acf/sv-benchmarks/c/loops-crafted-1/mono-crafted_3.c[318,331] [2024-11-08 18:35:58,862 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:35:58,888 INFO L204 MainTranslator]: Completed translation [2024-11-08 18:35:58,889 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:35:58 WrapperNode [2024-11-08 18:35:58,890 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 18:35:58,891 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 18:35:58,892 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 18:35:58,892 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 18:35:58,902 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:35:58" (1/1) ... [2024-11-08 18:35:58,911 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:35:58" (1/1) ... [2024-11-08 18:35:58,937 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 43 [2024-11-08 18:35:58,938 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 18:35:58,939 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 18:35:58,939 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 18:35:58,939 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 18:35:58,954 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:35:58" (1/1) ... [2024-11-08 18:35:58,954 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:35:58" (1/1) ... [2024-11-08 18:35:58,956 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:35:58" (1/1) ... [2024-11-08 18:35:58,980 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 18:35:58,981 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:35:58" (1/1) ... [2024-11-08 18:35:58,981 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:35:58" (1/1) ... [2024-11-08 18:35:58,986 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:35:58" (1/1) ... [2024-11-08 18:35:58,993 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:35:58" (1/1) ... [2024-11-08 18:35:58,994 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:35:58" (1/1) ... [2024-11-08 18:35:58,998 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:35:58" (1/1) ... [2024-11-08 18:35:58,999 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 18:35:59,001 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 18:35:59,001 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 18:35:59,001 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 18:35:59,003 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:35:58" (1/1) ... [2024-11-08 18:35:59,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:35:59,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:35:59,046 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 18:35:59,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 18:35:59,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 18:35:59,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 18:35:59,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 18:35:59,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 18:35:59,199 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 18:35:59,203 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 18:35:59,408 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-11-08 18:35:59,409 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 18:35:59,426 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 18:35:59,428 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 18:35:59,428 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:35:59 BoogieIcfgContainer [2024-11-08 18:35:59,429 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 18:35:59,433 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 18:35:59,433 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 18:35:59,437 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 18:35:59,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:35:58" (1/3) ... [2024-11-08 18:35:59,439 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@259fee81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:35:59, skipping insertion in model container [2024-11-08 18:35:59,440 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:35:58" (2/3) ... [2024-11-08 18:35:59,441 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@259fee81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:35:59, skipping insertion in model container [2024-11-08 18:35:59,441 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:35:59" (3/3) ... [2024-11-08 18:35:59,443 INFO L112 eAbstractionObserver]: Analyzing ICFG mono-crafted_3.c [2024-11-08 18:35:59,470 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 18:35:59,470 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 18:35:59,549 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:35:59,558 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;@476fc29, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:35:59,559 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 18:35:59,565 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 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 18:35:59,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-08 18:35:59,577 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:35:59,581 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:35:59,582 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:35:59,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:35:59,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1818541140, now seen corresponding path program 1 times [2024-11-08 18:35:59,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:35:59,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896819029] [2024-11-08 18:35:59,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:35:59,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:35:59,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:35:59,915 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 18:35:59,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:35:59,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896819029] [2024-11-08 18:35:59,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896819029] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:35:59,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:35:59,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:35:59,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618813232] [2024-11-08 18:35:59,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:35:59,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:35:59,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:35:59,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:35:59,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:35:59,956 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 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 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 18:36:00,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:36:00,029 INFO L93 Difference]: Finished difference Result 31 states and 44 transitions. [2024-11-08 18:36:00,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:36:00,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2024-11-08 18:36:00,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:36:00,043 INFO L225 Difference]: With dead ends: 31 [2024-11-08 18:36:00,044 INFO L226 Difference]: Without dead ends: 14 [2024-11-08 18:36:00,047 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:36:00,055 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:36:00,056 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 25 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:36:00,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2024-11-08 18:36:00,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2024-11-08 18:36:00,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 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 18:36:00,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2024-11-08 18:36:00,101 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 18 transitions. Word has length 7 [2024-11-08 18:36:00,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:36:00,102 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 18 transitions. [2024-11-08 18:36:00,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 18:36:00,103 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2024-11-08 18:36:00,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-08 18:36:00,103 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:36:00,103 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:36:00,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 18:36:00,104 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:36:00,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:36:00,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1953046351, now seen corresponding path program 1 times [2024-11-08 18:36:00,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:36:00,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284144815] [2024-11-08 18:36:00,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:36:00,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:36:00,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:36:00,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:36:00,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:36:00,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284144815] [2024-11-08 18:36:00,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284144815] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:36:00,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:36:00,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:36:00,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035221503] [2024-11-08 18:36:00,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:36:00,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:36:00,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:36:00,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:36:00,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:36:00,322 INFO L87 Difference]: Start difference. First operand 14 states and 18 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 18:36:00,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:36:00,363 INFO L93 Difference]: Finished difference Result 20 states and 25 transitions. [2024-11-08 18:36:00,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:36:00,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2024-11-08 18:36:00,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:36:00,366 INFO L225 Difference]: With dead ends: 20 [2024-11-08 18:36:00,366 INFO L226 Difference]: Without dead ends: 16 [2024-11-08 18:36:00,367 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 18:36:00,369 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:36:00,371 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 16 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:36:00,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-08 18:36:00,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-11-08 18:36:00,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 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 18:36:00,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2024-11-08 18:36:00,383 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 10 [2024-11-08 18:36:00,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:36:00,384 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2024-11-08 18:36:00,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 18:36:00,385 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2024-11-08 18:36:00,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-08 18:36:00,388 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:36:00,389 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:36:00,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 18:36:00,390 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:36:00,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:36:00,391 INFO L85 PathProgramCache]: Analyzing trace with hash -181085738, now seen corresponding path program 1 times [2024-11-08 18:36:00,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:36:00,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755717571] [2024-11-08 18:36:00,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:36:00,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:36:00,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:36:00,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:36:00,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:36:00,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755717571] [2024-11-08 18:36:00,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755717571] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:36:00,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576867544] [2024-11-08 18:36:00,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:36:00,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:36:00,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:36:00,577 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:36:00,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 18:36:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:36:00,683 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 18:36:00,689 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:36:00,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:36:00,772 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:36:00,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:36:00,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576867544] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:36:00,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:36:00,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-08 18:36:00,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136827868] [2024-11-08 18:36:00,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:36:00,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 18:36:00,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:36:00,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 18:36:00,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:36:00,826 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 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 18:36:00,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:36:00,976 INFO L93 Difference]: Finished difference Result 36 states and 53 transitions. [2024-11-08 18:36:00,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 18:36:00,977 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 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 12 [2024-11-08 18:36:00,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:36:00,978 INFO L225 Difference]: With dead ends: 36 [2024-11-08 18:36:00,978 INFO L226 Difference]: Without dead ends: 25 [2024-11-08 18:36:00,979 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2024-11-08 18:36:00,980 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 5 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:36:00,981 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 17 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:36:00,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-08 18:36:00,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-08 18:36:00,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 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 18:36:00,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2024-11-08 18:36:00,989 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 12 [2024-11-08 18:36:00,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:36:00,989 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2024-11-08 18:36:00,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 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 18:36:00,990 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2024-11-08 18:36:00,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-08 18:36:00,991 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:36:00,991 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:36:01,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 18:36:01,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:36:01,196 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:36:01,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:36:01,198 INFO L85 PathProgramCache]: Analyzing trace with hash -916364066, now seen corresponding path program 1 times [2024-11-08 18:36:01,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:36:01,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989595720] [2024-11-08 18:36:01,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:36:01,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:36:01,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:36:01,440 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 18:36:01,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:36:01,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989595720] [2024-11-08 18:36:01,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989595720] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:36:01,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357539759] [2024-11-08 18:36:01,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:36:01,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:36:01,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:36:01,445 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:36:01,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 18:36:01,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:36:01,516 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 18:36:01,518 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:36:01,563 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 18:36:01,563 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:36:01,634 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 18:36:01,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357539759] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:36:01,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:36:01,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-08 18:36:01,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365629548] [2024-11-08 18:36:01,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:36:01,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 18:36:01,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:36:01,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 18:36:01,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-08 18:36:01,647 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 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 18:36:01,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:36:01,752 INFO L93 Difference]: Finished difference Result 54 states and 66 transitions. [2024-11-08 18:36:01,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 18:36:01,753 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 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 18:36:01,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:36:01,755 INFO L225 Difference]: With dead ends: 54 [2024-11-08 18:36:01,756 INFO L226 Difference]: Without dead ends: 37 [2024-11-08 18:36:01,756 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-08 18:36:01,759 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:36:01,760 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:36:01,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-08 18:36:01,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-08 18:36:01,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 36 states have internal predecessors, (41), 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 18:36:01,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2024-11-08 18:36:01,769 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 23 [2024-11-08 18:36:01,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:36:01,769 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2024-11-08 18:36:01,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 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 18:36:01,770 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2024-11-08 18:36:01,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-08 18:36:01,771 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:36:01,771 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:36:01,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 18:36:01,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:36:01,973 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:36:01,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:36:01,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1326134626, now seen corresponding path program 2 times [2024-11-08 18:36:01,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:36:01,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215513447] [2024-11-08 18:36:01,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:36:01,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:36:02,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:36:02,381 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 28 proven. 63 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 18:36:02,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:36:02,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215513447] [2024-11-08 18:36:02,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215513447] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:36:02,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043228176] [2024-11-08 18:36:02,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:36:02,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:36:02,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:36:02,385 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:36:02,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 18:36:02,478 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:36:02,478 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:36:02,480 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-08 18:36:02,485 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:36:02,598 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 28 proven. 63 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 18:36:02,599 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:36:02,820 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 28 proven. 63 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 18:36:02,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043228176] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:36:02,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:36:02,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-11-08 18:36:02,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103870253] [2024-11-08 18:36:02,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:36:02,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 18:36:02,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:36:02,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 18:36:02,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-11-08 18:36:02,824 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 17 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 18:36:02,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:36:02,938 INFO L93 Difference]: Finished difference Result 78 states and 94 transitions. [2024-11-08 18:36:02,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-08 18:36:02,939 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 17 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 35 [2024-11-08 18:36:02,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:36:02,940 INFO L225 Difference]: With dead ends: 78 [2024-11-08 18:36:02,940 INFO L226 Difference]: Without dead ends: 61 [2024-11-08 18:36:02,941 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-11-08 18:36:02,945 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:36:02,946 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:36:02,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-08 18:36:02,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-11-08 18:36:02,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.0833333333333333) internal successors, (65), 60 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 18:36:02,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2024-11-08 18:36:02,966 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 35 [2024-11-08 18:36:02,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:36:02,966 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2024-11-08 18:36:02,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 17 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 18:36:02,967 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2024-11-08 18:36:02,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-08 18:36:02,971 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:36:02,971 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 14, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:36:02,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 18:36:03,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:36:03,173 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:36:03,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:36:03,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1190414818, now seen corresponding path program 3 times [2024-11-08 18:36:03,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:36:03,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633277526] [2024-11-08 18:36:03,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:36:03,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:36:03,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:36:04,037 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 60 proven. 315 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 18:36:04,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:36:04,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633277526] [2024-11-08 18:36:04,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633277526] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:36:04,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433270080] [2024-11-08 18:36:04,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 18:36:04,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:36:04,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:36:04,041 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:36:04,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 18:36:04,118 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-08 18:36:04,119 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:36:04,121 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 18:36:04,124 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:36:04,334 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 61 proven. 4 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2024-11-08 18:36:04,334 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:36:04,546 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 61 proven. 4 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2024-11-08 18:36:04,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433270080] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:36:04,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:36:04,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 6, 6] total 25 [2024-11-08 18:36:04,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788780239] [2024-11-08 18:36:04,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:36:04,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-08 18:36:04,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:36:04,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-08 18:36:04,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2024-11-08 18:36:04,551 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand has 25 states, 25 states have (on average 3.4) internal successors, (85), 25 states have internal predecessors, (85), 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 18:36:05,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:36:05,104 INFO L93 Difference]: Finished difference Result 97 states and 116 transitions. [2024-11-08 18:36:05,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-08 18:36:05,104 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.4) internal successors, (85), 25 states have internal predecessors, (85), 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 59 [2024-11-08 18:36:05,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:36:05,106 INFO L225 Difference]: With dead ends: 97 [2024-11-08 18:36:05,106 INFO L226 Difference]: Without dead ends: 80 [2024-11-08 18:36:05,107 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=525, Invalid=1035, Unknown=0, NotChecked=0, Total=1560 [2024-11-08 18:36:05,108 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:36:05,109 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 48 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:36:05,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-08 18:36:05,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 71. [2024-11-08 18:36:05,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.0571428571428572) internal successors, (74), 70 states have internal predecessors, (74), 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 18:36:05,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions. [2024-11-08 18:36:05,121 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 59 [2024-11-08 18:36:05,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:36:05,122 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 74 transitions. [2024-11-08 18:36:05,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.4) internal successors, (85), 25 states have internal predecessors, (85), 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 18:36:05,123 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions. [2024-11-08 18:36:05,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-08 18:36:05,125 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:36:05,125 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 15, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:36:05,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 18:36:05,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-08 18:36:05,326 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:36:05,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:36:05,327 INFO L85 PathProgramCache]: Analyzing trace with hash -663465713, now seen corresponding path program 4 times [2024-11-08 18:36:05,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:36:05,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633673437] [2024-11-08 18:36:05,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:36:05,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:36:05,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:36:05,942 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 64 proven. 360 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-08 18:36:05,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:36:05,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633673437] [2024-11-08 18:36:05,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633673437] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:36:05,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099763551] [2024-11-08 18:36:05,943 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 18:36:05,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:36:05,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:36:05,945 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:36:05,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 18:36:06,063 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 18:36:06,064 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:36:06,066 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-08 18:36:06,073 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:36:06,226 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 64 proven. 360 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-08 18:36:06,226 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:36:06,985 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 64 proven. 360 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-08 18:36:06,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099763551] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:36:06,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:36:06,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 35 [2024-11-08 18:36:06,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83276808] [2024-11-08 18:36:06,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:36:06,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-08 18:36:06,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:36:06,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-08 18:36:06,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2024-11-08 18:36:06,991 INFO L87 Difference]: Start difference. First operand 71 states and 74 transitions. Second operand has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 35 states have internal predecessors, (113), 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 18:36:07,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:36:07,240 INFO L93 Difference]: Finished difference Result 146 states and 169 transitions. [2024-11-08 18:36:07,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-08 18:36:07,241 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 35 states have internal predecessors, (113), 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 18:36:07,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:36:07,243 INFO L225 Difference]: With dead ends: 146 [2024-11-08 18:36:07,243 INFO L226 Difference]: Without dead ends: 122 [2024-11-08 18:36:07,244 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2024-11-08 18:36:07,245 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:36:07,245 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:36:07,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-08 18:36:07,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2024-11-08 18:36:07,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.0330578512396693) internal successors, (125), 121 states have internal predecessors, (125), 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 18:36:07,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 125 transitions. [2024-11-08 18:36:07,263 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 125 transitions. Word has length 70 [2024-11-08 18:36:07,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:36:07,264 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 125 transitions. [2024-11-08 18:36:07,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 35 states have internal predecessors, (113), 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 18:36:07,265 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 125 transitions. [2024-11-08 18:36:07,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-08 18:36:07,268 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:36:07,268 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 32, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:36:07,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 18:36:07,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:36:07,473 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:36:07,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:36:07,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1080677358, now seen corresponding path program 5 times [2024-11-08 18:36:07,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:36:07,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980364480] [2024-11-08 18:36:07,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:36:07,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:36:07,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:36:09,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1753 backedges. 132 proven. 1584 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-08 18:36:09,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:36:09,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980364480] [2024-11-08 18:36:09,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980364480] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:36:09,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63741678] [2024-11-08 18:36:09,674 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 18:36:09,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:36:09,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:36:09,677 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:36:09,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 18:36:09,845 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 35 check-sat command(s) [2024-11-08 18:36:09,846 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:36:09,849 INFO L255 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-08 18:36:09,867 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:36:10,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1753 backedges. 132 proven. 1584 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-08 18:36:10,157 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:36:12,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1753 backedges. 132 proven. 1584 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-08 18:36:12,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63741678] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:36:12,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:36:12,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 69 [2024-11-08 18:36:12,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255596611] [2024-11-08 18:36:12,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:36:12,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-08 18:36:12,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:36:12,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-08 18:36:12,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2024-11-08 18:36:12,745 INFO L87 Difference]: Start difference. First operand 122 states and 125 transitions. Second operand has 69 states, 69 states have (on average 3.1159420289855073) internal successors, (215), 69 states have internal predecessors, (215), 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 18:36:13,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:36:13,212 INFO L93 Difference]: Finished difference Result 248 states and 288 transitions. [2024-11-08 18:36:13,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-08 18:36:13,213 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 3.1159420289855073) internal successors, (215), 69 states have internal predecessors, (215), 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 121 [2024-11-08 18:36:13,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:36:13,216 INFO L225 Difference]: With dead ends: 248 [2024-11-08 18:36:13,216 INFO L226 Difference]: Without dead ends: 224 [2024-11-08 18:36:13,218 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2024-11-08 18:36:13,219 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:36:13,220 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 18:36:13,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-11-08 18:36:13,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2024-11-08 18:36:13,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 1.0179372197309418) internal successors, (227), 223 states have internal predecessors, (227), 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 18:36:13,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 227 transitions. [2024-11-08 18:36:13,244 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 227 transitions. Word has length 121 [2024-11-08 18:36:13,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:36:13,245 INFO L471 AbstractCegarLoop]: Abstraction has 224 states and 227 transitions. [2024-11-08 18:36:13,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 3.1159420289855073) internal successors, (215), 69 states have internal predecessors, (215), 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 18:36:13,245 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 227 transitions. [2024-11-08 18:36:13,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-11-08 18:36:13,249 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:36:13,249 INFO L215 NwaCegarLoop]: trace histogram [68, 68, 66, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:36:13,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 18:36:13,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:36:13,451 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:36:13,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:36:13,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1641076494, now seen corresponding path program 6 times [2024-11-08 18:36:13,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:36:13,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833641671] [2024-11-08 18:36:13,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:36:13,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:36:13,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:36:20,167 INFO L134 CoverageAnalysis]: Checked inductivity of 6938 backedges. 268 proven. 6633 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-08 18:36:20,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:36:20,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833641671] [2024-11-08 18:36:20,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833641671] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:36:20,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132730327] [2024-11-08 18:36:20,169 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 18:36:20,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:36:20,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:36:20,171 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:36:20,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 18:36:20,285 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-08 18:36:20,286 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:36:20,287 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 18:36:20,295 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:36:20,549 INFO L134 CoverageAnalysis]: Checked inductivity of 6938 backedges. 462 proven. 5 refuted. 0 times theorem prover too weak. 6471 trivial. 0 not checked. [2024-11-08 18:36:20,549 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:36:20,830 INFO L134 CoverageAnalysis]: Checked inductivity of 6938 backedges. 462 proven. 5 refuted. 0 times theorem prover too weak. 6471 trivial. 0 not checked. [2024-11-08 18:36:20,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132730327] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:36:20,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:36:20,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 5, 5] total 75 [2024-11-08 18:36:20,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752678778] [2024-11-08 18:36:20,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:36:20,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-11-08 18:36:20,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:36:20,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-11-08 18:36:20,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2024-11-08 18:36:20,838 INFO L87 Difference]: Start difference. First operand 224 states and 227 transitions. Second operand has 75 states, 75 states have (on average 3.1066666666666665) internal successors, (233), 75 states have internal predecessors, (233), 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 18:36:21,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:36:21,420 INFO L93 Difference]: Finished difference Result 263 states and 278 transitions. [2024-11-08 18:36:21,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-11-08 18:36:21,421 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 3.1066666666666665) internal successors, (233), 75 states have internal predecessors, (233), 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 223 [2024-11-08 18:36:21,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:36:21,425 INFO L225 Difference]: With dead ends: 263 [2024-11-08 18:36:21,425 INFO L226 Difference]: Without dead ends: 239 [2024-11-08 18:36:21,427 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2024-11-08 18:36:21,428 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 4 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:36:21,429 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 34 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 18:36:21,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2024-11-08 18:36:21,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2024-11-08 18:36:21,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 238 states have (on average 1.0336134453781514) internal successors, (246), 238 states have internal predecessors, (246), 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 18:36:21,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 246 transitions. [2024-11-08 18:36:21,464 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 246 transitions. Word has length 223 [2024-11-08 18:36:21,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:36:21,465 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 246 transitions. [2024-11-08 18:36:21,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 3.1066666666666665) internal successors, (233), 75 states have internal predecessors, (233), 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 18:36:21,466 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 246 transitions. [2024-11-08 18:36:21,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2024-11-08 18:36:21,470 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:36:21,471 INFO L215 NwaCegarLoop]: trace histogram [73, 73, 67, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:36:21,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 18:36:21,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:36:21,675 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:36:21,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:36:21,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1391157489, now seen corresponding path program 7 times [2024-11-08 18:36:21,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:36:21,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548132096] [2024-11-08 18:36:21,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:36:21,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:36:21,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:36:28,212 INFO L134 CoverageAnalysis]: Checked inductivity of 7993 backedges. 1088 proven. 6834 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-08 18:36:28,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:36:28,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548132096] [2024-11-08 18:36:28,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548132096] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:36:28,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139534957] [2024-11-08 18:36:28,213 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 18:36:28,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:36:28,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:36:28,215 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:36:28,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 18:36:28,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:36:28,428 INFO L255 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 136 conjuncts are in the unsatisfiable core [2024-11-08 18:36:28,445 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:36:28,905 INFO L134 CoverageAnalysis]: Checked inductivity of 7993 backedges. 1088 proven. 6834 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-08 18:36:28,905 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:36:36,740 INFO L134 CoverageAnalysis]: Checked inductivity of 7993 backedges. 1088 proven. 6834 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-08 18:36:36,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139534957] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:36:36,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:36:36,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70, 70] total 139 [2024-11-08 18:36:36,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128712480] [2024-11-08 18:36:36,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:36:36,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 139 states [2024-11-08 18:36:36,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:36:36,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2024-11-08 18:36:36,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2024-11-08 18:36:36,755 INFO L87 Difference]: Start difference. First operand 239 states and 246 transitions. Second operand has 139 states, 139 states have (on average 3.0575539568345325) internal successors, (425), 139 states have internal predecessors, (425), 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 18:36:37,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:36:37,883 INFO L93 Difference]: Finished difference Result 482 states and 565 transitions. [2024-11-08 18:36:37,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2024-11-08 18:36:37,884 INFO L78 Accepts]: Start accepts. Automaton has has 139 states, 139 states have (on average 3.0575539568345325) internal successors, (425), 139 states have internal predecessors, (425), 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 238 [2024-11-08 18:36:37,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:36:37,886 INFO L225 Difference]: With dead ends: 482 [2024-11-08 18:36:37,886 INFO L226 Difference]: Without dead ends: 446 [2024-11-08 18:36:37,892 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2024-11-08 18:36:37,893 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 18:36:37,894 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 18:36:37,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2024-11-08 18:36:37,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 446. [2024-11-08 18:36:37,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 1.0179775280898877) internal successors, (453), 445 states have internal predecessors, (453), 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 18:36:37,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 453 transitions. [2024-11-08 18:36:37,932 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 453 transitions. Word has length 238 [2024-11-08 18:36:37,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:36:37,933 INFO L471 AbstractCegarLoop]: Abstraction has 446 states and 453 transitions. [2024-11-08 18:36:37,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 139 states, 139 states have (on average 3.0575539568345325) internal successors, (425), 139 states have internal predecessors, (425), 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 18:36:37,934 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 453 transitions. [2024-11-08 18:36:37,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2024-11-08 18:36:37,945 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:36:37,945 INFO L215 NwaCegarLoop]: trace histogram [142, 142, 136, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:36:37,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 18:36:38,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:36:38,146 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:36:38,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:36:38,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1072547282, now seen corresponding path program 8 times [2024-11-08 18:36:38,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:36:38,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419403794] [2024-11-08 18:36:38,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:36:38,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:36:38,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:37:04,213 INFO L134 CoverageAnalysis]: Checked inductivity of 30211 backedges. 2192 proven. 27948 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-08 18:37:04,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:37:04,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419403794] [2024-11-08 18:37:04,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419403794] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:37:04,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260180580] [2024-11-08 18:37:04,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:37:04,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:37:04,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:37:04,215 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:37:04,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 18:37:04,593 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:37:04,593 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:37:04,602 INFO L255 TraceCheckSpWp]: Trace formula consists of 1078 conjuncts, 274 conjuncts are in the unsatisfiable core [2024-11-08 18:37:04,643 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:37:05,581 INFO L134 CoverageAnalysis]: Checked inductivity of 30211 backedges. 2192 proven. 27948 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-08 18:37:05,581 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:37:35,904 INFO L134 CoverageAnalysis]: Checked inductivity of 30211 backedges. 2192 proven. 27948 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-08 18:37:35,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260180580] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:37:35,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:37:35,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [139, 139, 139] total 277 [2024-11-08 18:37:35,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624190060] [2024-11-08 18:37:35,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:37:35,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 277 states [2024-11-08 18:37:35,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:37:35,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 277 interpolants. [2024-11-08 18:37:35,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38226, Invalid=38226, Unknown=0, NotChecked=0, Total=76452 [2024-11-08 18:37:35,933 INFO L87 Difference]: Start difference. First operand 446 states and 453 transitions. Second operand has 277 states, 277 states have (on average 3.0288808664259927) internal successors, (839), 277 states have internal predecessors, (839), 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 18:37:39,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:37:39,821 INFO L93 Difference]: Finished difference Result 896 states and 1048 transitions. [2024-11-08 18:37:39,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 276 states. [2024-11-08 18:37:39,823 INFO L78 Accepts]: Start accepts. Automaton has has 277 states, 277 states have (on average 3.0288808664259927) internal successors, (839), 277 states have internal predecessors, (839), 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 445 [2024-11-08 18:37:39,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:37:39,827 INFO L225 Difference]: With dead ends: 896 [2024-11-08 18:37:39,827 INFO L226 Difference]: Without dead ends: 860 [2024-11-08 18:37:39,834 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1027 GetRequests, 752 SyntacticMatches, 0 SemanticMatches, 275 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 39.7s TimeCoverageRelationStatistics Valid=38226, Invalid=38226, Unknown=0, NotChecked=0, Total=76452 [2024-11-08 18:37:39,835 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:37:39,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-08 18:37:39,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2024-11-08 18:37:39,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 860. [2024-11-08 18:37:39,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 859 states have (on average 1.009313154831199) internal successors, (867), 859 states have internal predecessors, (867), 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 18:37:39,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 867 transitions. [2024-11-08 18:37:39,898 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 867 transitions. Word has length 445 [2024-11-08 18:37:39,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:37:39,899 INFO L471 AbstractCegarLoop]: Abstraction has 860 states and 867 transitions. [2024-11-08 18:37:39,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 277 states, 277 states have (on average 3.0288808664259927) internal successors, (839), 277 states have internal predecessors, (839), 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 18:37:39,900 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 867 transitions. [2024-11-08 18:37:39,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 860 [2024-11-08 18:37:39,929 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:37:39,930 INFO L215 NwaCegarLoop]: trace histogram [280, 280, 274, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:37:39,954 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 18:37:40,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:37:40,130 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:37:40,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:37:40,131 INFO L85 PathProgramCache]: Analyzing trace with hash -945731534, now seen corresponding path program 9 times [2024-11-08 18:37:40,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:37:40,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895167639] [2024-11-08 18:37:40,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:37:40,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:37:41,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:39:58,559 INFO L134 CoverageAnalysis]: Checked inductivity of 117496 backedges. 4400 proven. 113025 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-08 18:39:58,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:39:58,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895167639] [2024-11-08 18:39:58,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895167639] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:39:58,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777675475] [2024-11-08 18:39:58,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 18:39:58,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:39:58,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:39:58,562 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:39:58,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 18:39:58,831 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-08 18:39:58,831 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:39:58,833 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-08 18:39:58,846 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:40:01,794 INFO L134 CoverageAnalysis]: Checked inductivity of 117496 backedges. 4435 proven. 36 refuted. 0 times theorem prover too weak. 113025 trivial. 0 not checked. [2024-11-08 18:40:01,794 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:40:04,706 INFO L134 CoverageAnalysis]: Checked inductivity of 117496 backedges. 4435 proven. 36 refuted. 0 times theorem prover too weak. 113025 trivial. 0 not checked. [2024-11-08 18:40:04,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777675475] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:40:04,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:40:04,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [277, 12, 12] total 297 [2024-11-08 18:40:04,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419318852] [2024-11-08 18:40:04,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:40:04,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 297 states [2024-11-08 18:40:04,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:40:04,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 297 interpolants. [2024-11-08 18:40:04,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38456, Invalid=49456, Unknown=0, NotChecked=0, Total=87912 [2024-11-08 18:40:04,730 INFO L87 Difference]: Start difference. First operand 860 states and 867 transitions. Second operand has 297 states, 297 states have (on average 3.047138047138047) internal successors, (905), 297 states have internal predecessors, (905), 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 18:40:57,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:40:57,691 INFO L93 Difference]: Finished difference Result 978 states and 1022 transitions. [2024-11-08 18:40:57,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 294 states. [2024-11-08 18:40:57,692 INFO L78 Accepts]: Start accepts. Automaton has has 297 states, 297 states have (on average 3.047138047138047) internal successors, (905), 297 states have internal predecessors, (905), 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 859 [2024-11-08 18:40:57,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:40:57,698 INFO L225 Difference]: With dead ends: 978 [2024-11-08 18:40:57,700 INFO L226 Difference]: Without dead ends: 942 [2024-11-08 18:40:57,723 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2268 GetRequests, 1698 SyntacticMatches, 0 SemanticMatches, 570 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44698 ImplicationChecksByTransitivity, 89.7s TimeCoverageRelationStatistics Valid=118481, Invalid=208131, Unknown=0, NotChecked=0, Total=326612 [2024-11-08 18:40:57,724 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 10 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 1222 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:40:57,724 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 118 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1222 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-08 18:40:57,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2024-11-08 18:40:57,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 879. [2024-11-08 18:40:57,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 878 states have (on average 1.0091116173120729) internal successors, (886), 878 states have internal predecessors, (886), 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 18:40:57,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 886 transitions. [2024-11-08 18:40:57,785 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 886 transitions. Word has length 859 [2024-11-08 18:40:57,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:40:57,787 INFO L471 AbstractCegarLoop]: Abstraction has 879 states and 886 transitions. [2024-11-08 18:40:57,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 297 states, 297 states have (on average 3.047138047138047) internal successors, (905), 297 states have internal predecessors, (905), 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 18:40:57,788 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 886 transitions. [2024-11-08 18:40:57,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 879 [2024-11-08 18:40:57,798 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:40:57,798 INFO L215 NwaCegarLoop]: trace histogram [281, 281, 275, 14, 14, 6, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:40:57,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-08 18:40:57,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-08 18:40:57,999 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:40:57,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:40:58,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1534112201, now seen corresponding path program 10 times [2024-11-08 18:40:58,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:40:58,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817483526] [2024-11-08 18:40:58,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:40:58,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:40:59,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:43:32,860 INFO L134 CoverageAnalysis]: Checked inductivity of 118497 backedges. 4416 proven. 113850 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-08 18:43:32,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:43:32,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817483526] [2024-11-08 18:43:32,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817483526] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:43:32,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555417472] [2024-11-08 18:43:32,862 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 18:43:32,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:43:32,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:43:32,868 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:43:32,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 18:43:33,653 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 18:43:33,653 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:43:33,686 INFO L255 TraceCheckSpWp]: Trace formula consists of 2115 conjuncts, 552 conjuncts are in the unsatisfiable core [2024-11-08 18:43:33,751 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:43:35,404 INFO L134 CoverageAnalysis]: Checked inductivity of 118497 backedges. 4416 proven. 113850 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-08 18:43:35,405 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:45:35,984 INFO L134 CoverageAnalysis]: Checked inductivity of 118497 backedges. 4416 proven. 113850 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-08 18:45:35,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555417472] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:45:35,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:45:35,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [278, 278, 278] total 555 [2024-11-08 18:45:35,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194889424] [2024-11-08 18:45:35,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:45:35,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 555 states [2024-11-08 18:45:35,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:45:36,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 555 interpolants. [2024-11-08 18:45:36,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153735, Invalid=153735, Unknown=0, NotChecked=0, Total=307470 [2024-11-08 18:45:36,056 INFO L87 Difference]: Start difference. First operand 879 states and 886 transitions. Second operand has 555 states, 555 states have (on average 3.0144144144144143) internal successors, (1673), 555 states have internal predecessors, (1673), 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 18:45:53,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:45:53,410 INFO L93 Difference]: Finished difference Result 1762 states and 2053 transitions. [2024-11-08 18:45:53,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 554 states. [2024-11-08 18:45:53,411 INFO L78 Accepts]: Start accepts. Automaton has has 555 states, 555 states have (on average 3.0144144144144143) internal successors, (1673), 555 states have internal predecessors, (1673), 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 878 [2024-11-08 18:45:53,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:45:53,419 INFO L225 Difference]: With dead ends: 1762 [2024-11-08 18:45:53,420 INFO L226 Difference]: Without dead ends: 1710 [2024-11-08 18:45:53,439 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2032 GetRequests, 1479 SyntacticMatches, 0 SemanticMatches, 553 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1100 ImplicationChecksByTransitivity, 160.9s TimeCoverageRelationStatistics Valid=153735, Invalid=153735, Unknown=0, NotChecked=0, Total=307470 [2024-11-08 18:45:53,440 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1675 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 1676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:45:53,441 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 1676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1675 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-08 18:45:53,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1710 states. [2024-11-08 18:45:53,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1710 to 1710. [2024-11-08 18:45:53,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1710 states, 1709 states have (on average 1.0046811000585139) internal successors, (1717), 1709 states have internal predecessors, (1717), 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 18:45:53,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1710 states to 1710 states and 1717 transitions. [2024-11-08 18:45:53,569 INFO L78 Accepts]: Start accepts. Automaton has 1710 states and 1717 transitions. Word has length 878 [2024-11-08 18:45:53,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:45:53,571 INFO L471 AbstractCegarLoop]: Abstraction has 1710 states and 1717 transitions. [2024-11-08 18:45:53,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 555 states, 555 states have (on average 3.0144144144144143) internal successors, (1673), 555 states have internal predecessors, (1673), 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 18:45:53,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1710 states and 1717 transitions. [2024-11-08 18:45:53,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1710 [2024-11-08 18:45:53,600 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:45:53,601 INFO L215 NwaCegarLoop]: trace histogram [558, 558, 552, 14, 14, 6, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:45:53,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-08 18:45:53,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8365da5-e86f-4207-8cc2-048b785e3acf/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-08 18:45:53,801 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:45:53,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:45:53,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1423716346, now seen corresponding path program 11 times [2024-11-08 18:45:53,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:45:53,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691010896] [2024-11-08 18:45:53,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:45:53,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:45:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat