./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC --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 7f4008cf19548475d4a1b90b2fc9651e21c073e156065e130bea6b81023185c5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 18:30:40,106 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 18:30:40,197 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 18:30:40,208 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 18:30:40,208 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 18:30:40,249 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 18:30:40,250 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 18:30:40,250 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 18:30:40,251 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 18:30:40,251 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 18:30:40,252 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 18:30:40,252 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 18:30:40,252 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 18:30:40,253 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 18:30:40,253 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 18:30:40,254 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 18:30:40,254 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 18:30:40,254 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 18:30:40,254 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 18:30:40,254 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 18:30:40,254 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 18:30:40,255 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 18:30:40,255 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 18:30:40,255 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 18:30:40,255 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 18:30:40,255 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 18:30:40,255 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 18:30:40,255 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 18:30:40,256 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 18:30:40,256 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:30:40,256 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:30:40,256 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:30:40,257 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:30:40,257 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 18:30:40,257 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:30:40,257 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:30:40,257 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:30:40,257 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:30:40,257 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 18:30:40,258 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 18:30:40,258 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 18:30:40,258 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 18:30:40,258 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 18:30:40,258 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 18:30:40,258 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 18:30:40,258 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 18:30:40,258 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 18:30:40,258 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 18:30:40,258 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC 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 -> 7f4008cf19548475d4a1b90b2fc9651e21c073e156065e130bea6b81023185c5 [2024-11-23 18:30:40,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 18:30:40,623 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 18:30:40,626 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 18:30:40,631 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 18:30:40,631 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 18:30:40,633 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c [2024-11-23 18:30:43,594 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/data/3f4d7826d/e77c3a5a0b3a4f97b14495d5ea251b0a/FLAGc4713da25 [2024-11-23 18:30:43,975 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 18:30:43,976 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c [2024-11-23 18:30:43,987 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/data/3f4d7826d/e77c3a5a0b3a4f97b14495d5ea251b0a/FLAGc4713da25 [2024-11-23 18:30:44,004 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/data/3f4d7826d/e77c3a5a0b3a4f97b14495d5ea251b0a [2024-11-23 18:30:44,006 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 18:30:44,008 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 18:30:44,010 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 18:30:44,010 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 18:30:44,015 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 18:30:44,016 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:30:44" (1/1) ... [2024-11-23 18:30:44,017 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7aa2c87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:30:44, skipping insertion in model container [2024-11-23 18:30:44,017 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:30:44" (1/1) ... [2024-11-23 18:30:44,053 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 18:30:44,381 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_1e3320b5-4ef6-45ab-9753-8a42eb67c944/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c[12020,12033] [2024-11-23 18:30:44,387 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:30:44,409 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 18:30:44,519 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_1e3320b5-4ef6-45ab-9753-8a42eb67c944/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c[12020,12033] [2024-11-23 18:30:44,520 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:30:44,537 INFO L204 MainTranslator]: Completed translation [2024-11-23 18:30:44,537 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:30:44 WrapperNode [2024-11-23 18:30:44,538 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 18:30:44,539 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 18:30:44,539 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 18:30:44,539 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 18:30:44,546 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:30:44" (1/1) ... [2024-11-23 18:30:44,558 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:30:44" (1/1) ... [2024-11-23 18:30:44,608 INFO L138 Inliner]: procedures = 28, calls = 51, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 418 [2024-11-23 18:30:44,608 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 18:30:44,609 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 18:30:44,609 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 18:30:44,609 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 18:30:44,619 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:30:44" (1/1) ... [2024-11-23 18:30:44,620 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:30:44" (1/1) ... [2024-11-23 18:30:44,624 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:30:44" (1/1) ... [2024-11-23 18:30:44,644 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]. [2024-11-23 18:30:44,644 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:30:44" (1/1) ... [2024-11-23 18:30:44,644 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:30:44" (1/1) ... [2024-11-23 18:30:44,655 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:30:44" (1/1) ... [2024-11-23 18:30:44,656 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:30:44" (1/1) ... [2024-11-23 18:30:44,662 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:30:44" (1/1) ... [2024-11-23 18:30:44,664 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:30:44" (1/1) ... [2024-11-23 18:30:44,666 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:30:44" (1/1) ... [2024-11-23 18:30:44,670 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 18:30:44,671 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 18:30:44,671 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 18:30:44,672 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 18:30:44,673 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:30:44" (1/1) ... [2024-11-23 18:30:44,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:30:44,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:30:44,712 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 18:30:44,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 18:30:44,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 18:30:44,745 INFO L130 BoogieDeclarations]: Found specification of procedure write_history_bool [2024-11-23 18:30:44,745 INFO L138 BoogieDeclarations]: Found implementation of procedure write_history_bool [2024-11-23 18:30:44,745 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2024-11-23 18:30:44,745 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2024-11-23 18:30:44,746 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_int8 [2024-11-23 18:30:44,746 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_int8 [2024-11-23 18:30:44,746 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_bool [2024-11-23 18:30:44,746 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_bool [2024-11-23 18:30:44,746 INFO L130 BoogieDeclarations]: Found specification of procedure add_history_type [2024-11-23 18:30:44,746 INFO L138 BoogieDeclarations]: Found implementation of procedure add_history_type [2024-11-23 18:30:44,746 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 18:30:44,747 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 18:30:44,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 18:30:44,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 18:30:44,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 18:30:44,860 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 18:30:44,862 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 18:30:45,681 INFO L? ?]: Removed 102 outVars from TransFormulas that were not future-live. [2024-11-23 18:30:45,682 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 18:30:45,703 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 18:30:45,704 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-23 18:30:45,704 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:30:45 BoogieIcfgContainer [2024-11-23 18:30:45,704 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 18:30:45,710 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 18:30:45,710 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 18:30:45,715 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 18:30:45,715 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:30:44" (1/3) ... [2024-11-23 18:30:45,716 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1198e64f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:30:45, skipping insertion in model container [2024-11-23 18:30:45,716 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:30:44" (2/3) ... [2024-11-23 18:30:45,716 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1198e64f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:30:45, skipping insertion in model container [2024-11-23 18:30:45,716 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:30:45" (3/3) ... [2024-11-23 18:30:45,718 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c [2024-11-23 18:30:45,731 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 18:30:45,733 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c that has 7 procedures, 178 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-23 18:30:45,797 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 18:30:45,810 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;@4ebffc8c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 18:30:45,810 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 18:30:45,815 INFO L276 IsEmpty]: Start isEmpty. Operand has 178 states, 133 states have (on average 1.586466165413534) internal successors, (211), 138 states have internal predecessors, (211), 37 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-11-23 18:30:45,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-23 18:30:45,826 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:30:45,827 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:30:45,827 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:30:45,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:30:45,834 INFO L85 PathProgramCache]: Analyzing trace with hash -990425789, now seen corresponding path program 1 times [2024-11-23 18:30:45,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:30:45,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457498969] [2024-11-23 18:30:45,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:45,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:30:45,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:46,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:30:46,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:30:46,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457498969] [2024-11-23 18:30:46,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457498969] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:30:46,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:30:46,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 18:30:46,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36421564] [2024-11-23 18:30:46,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:30:46,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:30:46,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:30:46,274 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:30:46,275 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:30:46,277 INFO L87 Difference]: Start difference. First operand has 178 states, 133 states have (on average 1.586466165413534) internal successors, (211), 138 states have internal predecessors, (211), 37 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:30:46,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:30:46,424 INFO L93 Difference]: Finished difference Result 355 states and 608 transitions. [2024-11-23 18:30:46,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:30:46,426 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-23 18:30:46,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:30:46,436 INFO L225 Difference]: With dead ends: 355 [2024-11-23 18:30:46,436 INFO L226 Difference]: Without dead ends: 180 [2024-11-23 18:30:46,441 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:30:46,444 INFO L435 NwaCegarLoop]: 272 mSDtfsCounter, 7 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:30:46,445 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 803 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:30:46,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-11-23 18:30:46,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2024-11-23 18:30:46,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 135 states have (on average 1.5555555555555556) internal successors, (210), 139 states have internal predecessors, (210), 37 states have call successors, (37), 7 states have call predecessors, (37), 7 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-11-23 18:30:46,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 284 transitions. [2024-11-23 18:30:46,518 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 284 transitions. Word has length 15 [2024-11-23 18:30:46,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:30:46,519 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 284 transitions. [2024-11-23 18:30:46,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:30:46,519 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 284 transitions. [2024-11-23 18:30:46,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-23 18:30:46,521 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:30:46,521 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:30:46,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 18:30:46,522 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:30:46,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:30:46,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1702670267, now seen corresponding path program 1 times [2024-11-23 18:30:46,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:30:46,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692468994] [2024-11-23 18:30:46,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:46,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:30:46,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:46,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:30:46,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:30:46,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692468994] [2024-11-23 18:30:46,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692468994] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:30:46,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:30:46,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 18:30:46,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545850432] [2024-11-23 18:30:46,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:30:46,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:30:46,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:30:46,750 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:30:46,750 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:30:46,751 INFO L87 Difference]: Start difference. First operand 180 states and 284 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:30:46,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:30:46,883 INFO L93 Difference]: Finished difference Result 373 states and 591 transitions. [2024-11-23 18:30:46,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:30:46,884 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-23 18:30:46,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:30:46,887 INFO L225 Difference]: With dead ends: 373 [2024-11-23 18:30:46,890 INFO L226 Difference]: Without dead ends: 196 [2024-11-23 18:30:46,892 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:30:46,893 INFO L435 NwaCegarLoop]: 276 mSDtfsCounter, 25 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:30:46,893 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 819 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:30:46,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-11-23 18:30:46,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 193. [2024-11-23 18:30:46,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 146 states have (on average 1.5342465753424657) internal successors, (224), 150 states have internal predecessors, (224), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-23 18:30:46,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 300 transitions. [2024-11-23 18:30:46,938 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 300 transitions. Word has length 16 [2024-11-23 18:30:46,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:30:46,939 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 300 transitions. [2024-11-23 18:30:46,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:30:46,939 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 300 transitions. [2024-11-23 18:30:46,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-23 18:30:46,943 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:30:46,944 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:30:46,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 18:30:46,944 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:30:46,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:30:46,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1283584726, now seen corresponding path program 1 times [2024-11-23 18:30:46,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:30:46,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869497742] [2024-11-23 18:30:46,945 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:46,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:30:46,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:47,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:30:47,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:30:47,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869497742] [2024-11-23 18:30:47,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869497742] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:30:47,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:30:47,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:30:47,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014644005] [2024-11-23 18:30:47,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:30:47,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:30:47,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:30:47,123 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:30:47,123 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:30:47,123 INFO L87 Difference]: Start difference. First operand 193 states and 300 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-23 18:30:47,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:30:47,174 INFO L93 Difference]: Finished difference Result 405 states and 637 transitions. [2024-11-23 18:30:47,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:30:47,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2024-11-23 18:30:47,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:30:47,181 INFO L225 Difference]: With dead ends: 405 [2024-11-23 18:30:47,181 INFO L226 Difference]: Without dead ends: 222 [2024-11-23 18:30:47,182 INFO L434 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 [2024-11-23 18:30:47,183 INFO L435 NwaCegarLoop]: 276 mSDtfsCounter, 22 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:30:47,186 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 550 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:30:47,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-23 18:30:47,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 195. [2024-11-23 18:30:47,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 148 states have (on average 1.527027027027027) internal successors, (226), 152 states have internal predecessors, (226), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-23 18:30:47,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 302 transitions. [2024-11-23 18:30:47,231 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 302 transitions. Word has length 24 [2024-11-23 18:30:47,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:30:47,233 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 302 transitions. [2024-11-23 18:30:47,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-23 18:30:47,233 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 302 transitions. [2024-11-23 18:30:47,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-23 18:30:47,235 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:30:47,237 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:30:47,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 18:30:47,237 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:30:47,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:30:47,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1169101943, now seen corresponding path program 1 times [2024-11-23 18:30:47,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:30:47,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576026766] [2024-11-23 18:30:47,238 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:47,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:30:47,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:47,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:30:47,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:30:47,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576026766] [2024-11-23 18:30:47,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576026766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:30:47,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:30:47,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:30:47,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785440872] [2024-11-23 18:30:47,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:30:47,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:30:47,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:30:47,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:30:47,426 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:30:47,426 INFO L87 Difference]: Start difference. First operand 195 states and 302 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-23 18:30:47,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:30:47,502 INFO L93 Difference]: Finished difference Result 380 states and 593 transitions. [2024-11-23 18:30:47,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:30:47,503 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2024-11-23 18:30:47,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:30:47,507 INFO L225 Difference]: With dead ends: 380 [2024-11-23 18:30:47,508 INFO L226 Difference]: Without dead ends: 201 [2024-11-23 18:30:47,510 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:30:47,511 INFO L435 NwaCegarLoop]: 276 mSDtfsCounter, 0 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:30:47,515 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1094 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:30:47,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-11-23 18:30:47,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 199. [2024-11-23 18:30:47,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 151 states have (on average 1.5165562913907285) internal successors, (229), 155 states have internal predecessors, (229), 38 states have call successors, (38), 8 states have call predecessors, (38), 9 states have return successors, (39), 39 states have call predecessors, (39), 38 states have call successors, (39) [2024-11-23 18:30:47,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 306 transitions. [2024-11-23 18:30:47,549 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 306 transitions. Word has length 32 [2024-11-23 18:30:47,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:30:47,549 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 306 transitions. [2024-11-23 18:30:47,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-23 18:30:47,550 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 306 transitions. [2024-11-23 18:30:47,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-23 18:30:47,553 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:30:47,553 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:30:47,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 18:30:47,554 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:30:47,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:30:47,554 INFO L85 PathProgramCache]: Analyzing trace with hash -2121673051, now seen corresponding path program 1 times [2024-11-23 18:30:47,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:30:47,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619336437] [2024-11-23 18:30:47,554 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:47,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:30:47,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:47,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:30:47,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:30:47,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619336437] [2024-11-23 18:30:47,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619336437] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:30:47,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:30:47,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 18:30:47,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210866910] [2024-11-23 18:30:47,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:30:47,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 18:30:47,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:30:47,764 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 18:30:47,764 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:30:47,764 INFO L87 Difference]: Start difference. First operand 199 states and 306 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-23 18:30:47,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:30:47,891 INFO L93 Difference]: Finished difference Result 343 states and 534 transitions. [2024-11-23 18:30:47,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 18:30:47,892 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2024-11-23 18:30:47,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:30:47,895 INFO L225 Difference]: With dead ends: 343 [2024-11-23 18:30:47,895 INFO L226 Difference]: Without dead ends: 195 [2024-11-23 18:30:47,896 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:30:47,897 INFO L435 NwaCegarLoop]: 270 mSDtfsCounter, 0 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:30:47,898 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1330 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:30:47,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-11-23 18:30:47,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2024-11-23 18:30:47,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 148 states have (on average 1.4932432432432432) internal successors, (221), 152 states have internal predecessors, (221), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-23 18:30:47,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 297 transitions. [2024-11-23 18:30:47,915 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 297 transitions. Word has length 35 [2024-11-23 18:30:47,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:30:47,915 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 297 transitions. [2024-11-23 18:30:47,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-23 18:30:47,916 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 297 transitions. [2024-11-23 18:30:47,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-23 18:30:47,917 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:30:47,917 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:30:47,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 18:30:47,917 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:30:47,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:30:47,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1881131524, now seen corresponding path program 1 times [2024-11-23 18:30:47,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:30:47,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141588870] [2024-11-23 18:30:47,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:47,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:30:47,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:48,051 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:30:48,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:30:48,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141588870] [2024-11-23 18:30:48,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141588870] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:30:48,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503726170] [2024-11-23 18:30:48,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:48,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:30:48,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:30:48,060 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:30:48,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 18:30:48,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:48,205 INFO L256 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 18:30:48,211 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:30:48,272 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:30:48,272 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:30:48,338 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:30:48,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503726170] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:30:48,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:30:48,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-11-23 18:30:48,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41161239] [2024-11-23 18:30:48,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:30:48,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 18:30:48,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:30:48,340 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 18:30:48,340 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:30:48,343 INFO L87 Difference]: Start difference. First operand 195 states and 297 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-23 18:30:48,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:30:48,430 INFO L93 Difference]: Finished difference Result 438 states and 681 transitions. [2024-11-23 18:30:48,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:30:48,431 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 35 [2024-11-23 18:30:48,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:30:48,436 INFO L225 Difference]: With dead ends: 438 [2024-11-23 18:30:48,436 INFO L226 Difference]: Without dead ends: 254 [2024-11-23 18:30:48,437 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:30:48,439 INFO L435 NwaCegarLoop]: 272 mSDtfsCounter, 94 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:30:48,440 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 804 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:30:48,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-11-23 18:30:48,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 248. [2024-11-23 18:30:48,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 191 states have (on average 1.4659685863874345) internal successors, (280), 195 states have internal predecessors, (280), 48 states have call successors, (48), 8 states have call predecessors, (48), 8 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-23 18:30:48,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 376 transitions. [2024-11-23 18:30:48,471 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 376 transitions. Word has length 35 [2024-11-23 18:30:48,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:30:48,471 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 376 transitions. [2024-11-23 18:30:48,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-23 18:30:48,472 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 376 transitions. [2024-11-23 18:30:48,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-23 18:30:48,474 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:30:48,475 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:30:48,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 18:30:48,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:30:48,676 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:30:48,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:30:48,676 INFO L85 PathProgramCache]: Analyzing trace with hash 264200636, now seen corresponding path program 2 times [2024-11-23 18:30:48,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:30:48,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651095642] [2024-11-23 18:30:48,676 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 18:30:48,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:30:48,712 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 18:30:48,712 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 18:30:48,785 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-23 18:30:48,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:30:48,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651095642] [2024-11-23 18:30:48,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651095642] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:30:48,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:30:48,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 18:30:48,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517141878] [2024-11-23 18:30:48,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:30:48,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:30:48,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:30:48,789 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:30:48,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:30:48,789 INFO L87 Difference]: Start difference. First operand 248 states and 376 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-23 18:30:48,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:30:48,889 INFO L93 Difference]: Finished difference Result 465 states and 730 transitions. [2024-11-23 18:30:48,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:30:48,889 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2024-11-23 18:30:48,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:30:48,892 INFO L225 Difference]: With dead ends: 465 [2024-11-23 18:30:48,893 INFO L226 Difference]: Without dead ends: 246 [2024-11-23 18:30:48,894 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:30:48,895 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 7 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:30:48,895 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 756 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:30:48,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-11-23 18:30:48,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2024-11-23 18:30:48,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 190 states have (on average 1.4631578947368422) internal successors, (278), 194 states have internal predecessors, (278), 47 states have call successors, (47), 8 states have call predecessors, (47), 8 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-11-23 18:30:48,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 372 transitions. [2024-11-23 18:30:48,921 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 372 transitions. Word has length 57 [2024-11-23 18:30:48,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:30:48,921 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 372 transitions. [2024-11-23 18:30:48,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-23 18:30:48,923 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 372 transitions. [2024-11-23 18:30:48,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-23 18:30:48,924 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:30:48,924 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:30:48,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 18:30:48,924 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:30:48,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:30:48,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1186474451, now seen corresponding path program 1 times [2024-11-23 18:30:48,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:30:48,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025082084] [2024-11-23 18:30:48,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:48,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:30:48,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:49,053 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-23 18:30:49,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:30:49,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025082084] [2024-11-23 18:30:49,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025082084] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:30:49,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:30:49,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 18:30:49,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714124786] [2024-11-23 18:30:49,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:30:49,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:30:49,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:30:49,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:30:49,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:30:49,055 INFO L87 Difference]: Start difference. First operand 246 states and 372 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-23 18:30:49,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:30:49,131 INFO L93 Difference]: Finished difference Result 470 states and 728 transitions. [2024-11-23 18:30:49,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:30:49,132 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2024-11-23 18:30:49,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:30:49,136 INFO L225 Difference]: With dead ends: 470 [2024-11-23 18:30:49,138 INFO L226 Difference]: Without dead ends: 253 [2024-11-23 18:30:49,139 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:30:49,140 INFO L435 NwaCegarLoop]: 265 mSDtfsCounter, 8 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:30:49,141 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 781 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:30:49,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-11-23 18:30:49,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2024-11-23 18:30:49,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 196 states have (on average 1.4591836734693877) internal successors, (286), 200 states have internal predecessors, (286), 47 states have call successors, (47), 9 states have call predecessors, (47), 9 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-11-23 18:30:49,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 380 transitions. [2024-11-23 18:30:49,166 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 380 transitions. Word has length 57 [2024-11-23 18:30:49,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:30:49,167 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 380 transitions. [2024-11-23 18:30:49,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-23 18:30:49,167 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 380 transitions. [2024-11-23 18:30:49,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-23 18:30:49,170 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:30:49,170 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:30:49,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 18:30:49,171 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:30:49,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:30:49,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1675858075, now seen corresponding path program 1 times [2024-11-23 18:30:49,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:30:49,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794533032] [2024-11-23 18:30:49,172 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:49,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:30:49,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:49,339 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-23 18:30:49,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:30:49,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794533032] [2024-11-23 18:30:49,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794533032] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:30:49,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:30:49,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 18:30:49,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449008397] [2024-11-23 18:30:49,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:30:49,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:30:49,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:30:49,340 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:30:49,340 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:30:49,341 INFO L87 Difference]: Start difference. First operand 253 states and 380 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-23 18:30:49,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:30:49,408 INFO L93 Difference]: Finished difference Result 516 states and 786 transitions. [2024-11-23 18:30:49,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:30:49,409 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 58 [2024-11-23 18:30:49,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:30:49,413 INFO L225 Difference]: With dead ends: 516 [2024-11-23 18:30:49,414 INFO L226 Difference]: Without dead ends: 292 [2024-11-23 18:30:49,416 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:30:49,416 INFO L435 NwaCegarLoop]: 274 mSDtfsCounter, 24 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:30:49,417 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 799 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:30:49,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2024-11-23 18:30:49,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 289. [2024-11-23 18:30:49,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 228 states have (on average 1.4166666666666667) internal successors, (323), 232 states have internal predecessors, (323), 50 states have call successors, (50), 10 states have call predecessors, (50), 10 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-23 18:30:49,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 423 transitions. [2024-11-23 18:30:49,445 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 423 transitions. Word has length 58 [2024-11-23 18:30:49,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:30:49,446 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 423 transitions. [2024-11-23 18:30:49,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-23 18:30:49,446 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 423 transitions. [2024-11-23 18:30:49,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-23 18:30:49,447 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:30:49,447 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:30:49,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 18:30:49,448 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:30:49,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:30:49,449 INFO L85 PathProgramCache]: Analyzing trace with hash 139669448, now seen corresponding path program 1 times [2024-11-23 18:30:49,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:30:49,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905536193] [2024-11-23 18:30:49,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:49,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:30:49,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:49,597 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-23 18:30:49,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:30:49,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905536193] [2024-11-23 18:30:49,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905536193] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:30:49,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:30:49,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:30:49,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560652130] [2024-11-23 18:30:49,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:30:49,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:30:49,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:30:49,599 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:30:49,599 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:30:49,599 INFO L87 Difference]: Start difference. First operand 289 states and 423 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-23 18:30:49,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:30:49,646 INFO L93 Difference]: Finished difference Result 527 states and 785 transitions. [2024-11-23 18:30:49,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:30:49,646 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 76 [2024-11-23 18:30:49,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:30:49,650 INFO L225 Difference]: With dead ends: 527 [2024-11-23 18:30:49,650 INFO L226 Difference]: Without dead ends: 291 [2024-11-23 18:30:49,652 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:30:49,652 INFO L435 NwaCegarLoop]: 269 mSDtfsCounter, 0 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:30:49,653 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1065 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:30:49,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-11-23 18:30:49,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 289. [2024-11-23 18:30:49,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 228 states have (on average 1.4035087719298245) internal successors, (320), 232 states have internal predecessors, (320), 50 states have call successors, (50), 10 states have call predecessors, (50), 10 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-23 18:30:49,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 420 transitions. [2024-11-23 18:30:49,688 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 420 transitions. Word has length 76 [2024-11-23 18:30:49,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:30:49,688 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 420 transitions. [2024-11-23 18:30:49,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-23 18:30:49,688 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 420 transitions. [2024-11-23 18:30:49,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-23 18:30:49,689 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:30:49,690 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:30:49,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 18:30:49,690 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:30:49,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:30:49,690 INFO L85 PathProgramCache]: Analyzing trace with hash -356940575, now seen corresponding path program 1 times [2024-11-23 18:30:49,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:30:49,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230702493] [2024-11-23 18:30:49,690 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:49,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:30:49,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:49,829 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-11-23 18:30:49,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:30:49,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230702493] [2024-11-23 18:30:49,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230702493] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:30:49,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:30:49,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 18:30:49,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721779520] [2024-11-23 18:30:49,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:30:49,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:30:49,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:30:49,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:30:49,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:30:49,831 INFO L87 Difference]: Start difference. First operand 289 states and 420 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-23 18:30:49,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:30:49,912 INFO L93 Difference]: Finished difference Result 514 states and 769 transitions. [2024-11-23 18:30:49,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:30:49,912 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 105 [2024-11-23 18:30:49,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:30:49,915 INFO L225 Difference]: With dead ends: 514 [2024-11-23 18:30:49,915 INFO L226 Difference]: Without dead ends: 283 [2024-11-23 18:30:49,917 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:30:49,918 INFO L435 NwaCegarLoop]: 261 mSDtfsCounter, 9 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:30:49,919 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 764 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:30:49,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-11-23 18:30:49,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2024-11-23 18:30:49,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 223 states have (on average 1.3811659192825112) internal successors, (308), 227 states have internal predecessors, (308), 49 states have call successors, (49), 10 states have call predecessors, (49), 10 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-11-23 18:30:49,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 406 transitions. [2024-11-23 18:30:49,941 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 406 transitions. Word has length 105 [2024-11-23 18:30:49,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:30:49,942 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 406 transitions. [2024-11-23 18:30:49,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-23 18:30:49,943 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 406 transitions. [2024-11-23 18:30:49,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-23 18:30:49,946 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:30:49,946 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:30:49,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 18:30:49,948 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:30:49,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:30:49,949 INFO L85 PathProgramCache]: Analyzing trace with hash -365410092, now seen corresponding path program 1 times [2024-11-23 18:30:49,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:30:49,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582911804] [2024-11-23 18:30:49,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:49,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:30:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:50,116 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2024-11-23 18:30:50,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:30:50,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582911804] [2024-11-23 18:30:50,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582911804] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:30:50,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782869243] [2024-11-23 18:30:50,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:50,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:30:50,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:30:50,120 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:30:50,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 18:30:50,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:50,310 INFO L256 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 18:30:50,315 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:30:50,367 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2024-11-23 18:30:50,367 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:30:50,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782869243] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:30:50,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:30:50,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-23 18:30:50,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659032286] [2024-11-23 18:30:50,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:30:50,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:30:50,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:30:50,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:30:50,369 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:30:50,369 INFO L87 Difference]: Start difference. First operand 283 states and 406 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-23 18:30:50,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:30:50,453 INFO L93 Difference]: Finished difference Result 511 states and 749 transitions. [2024-11-23 18:30:50,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:30:50,454 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 139 [2024-11-23 18:30:50,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:30:50,457 INFO L225 Difference]: With dead ends: 511 [2024-11-23 18:30:50,457 INFO L226 Difference]: Without dead ends: 266 [2024-11-23 18:30:50,458 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:30:50,458 INFO L435 NwaCegarLoop]: 252 mSDtfsCounter, 35 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:30:50,459 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 720 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:30:50,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-23 18:30:50,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2024-11-23 18:30:50,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 209 states have (on average 1.3732057416267942) internal successors, (287), 213 states have internal predecessors, (287), 46 states have call successors, (46), 10 states have call predecessors, (46), 10 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-23 18:30:50,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 379 transitions. [2024-11-23 18:30:50,479 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 379 transitions. Word has length 139 [2024-11-23 18:30:50,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:30:50,479 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 379 transitions. [2024-11-23 18:30:50,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-23 18:30:50,479 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 379 transitions. [2024-11-23 18:30:50,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-23 18:30:50,483 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:30:50,483 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:30:50,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-23 18:30:50,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-23 18:30:50,684 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:30:50,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:30:50,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1186353610, now seen corresponding path program 1 times [2024-11-23 18:30:50,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:30:50,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459451241] [2024-11-23 18:30:50,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:50,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:30:50,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:50,872 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 30 proven. 8 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-11-23 18:30:50,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:30:50,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459451241] [2024-11-23 18:30:50,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459451241] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:30:50,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516096981] [2024-11-23 18:30:50,872 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:50,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:30:50,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:30:50,877 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:30:50,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 18:30:51,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:51,077 INFO L256 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 18:30:51,084 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:30:51,133 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-23 18:30:51,133 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:30:51,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516096981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:30:51,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:30:51,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-23 18:30:51,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931063376] [2024-11-23 18:30:51,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:30:51,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:30:51,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:30:51,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:30:51,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:30:51,137 INFO L87 Difference]: Start difference. First operand 266 states and 379 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-23 18:30:51,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:30:51,225 INFO L93 Difference]: Finished difference Result 477 states and 695 transitions. [2024-11-23 18:30:51,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:30:51,226 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 143 [2024-11-23 18:30:51,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:30:51,228 INFO L225 Difference]: With dead ends: 477 [2024-11-23 18:30:51,228 INFO L226 Difference]: Without dead ends: 247 [2024-11-23 18:30:51,229 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:30:51,231 INFO L435 NwaCegarLoop]: 251 mSDtfsCounter, 37 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:30:51,231 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 716 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:30:51,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2024-11-23 18:30:51,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2024-11-23 18:30:51,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 193 states have (on average 1.3678756476683938) internal successors, (264), 197 states have internal predecessors, (264), 43 states have call successors, (43), 10 states have call predecessors, (43), 10 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-23 18:30:51,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 350 transitions. [2024-11-23 18:30:51,249 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 350 transitions. Word has length 143 [2024-11-23 18:30:51,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:30:51,249 INFO L471 AbstractCegarLoop]: Abstraction has 247 states and 350 transitions. [2024-11-23 18:30:51,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-23 18:30:51,250 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 350 transitions. [2024-11-23 18:30:51,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-23 18:30:51,254 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:30:51,254 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:30:51,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-23 18:30:51,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-23 18:30:51,458 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:30:51,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:30:51,459 INFO L85 PathProgramCache]: Analyzing trace with hash -596810665, now seen corresponding path program 1 times [2024-11-23 18:30:51,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:30:51,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858280652] [2024-11-23 18:30:51,459 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:51,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:30:51,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:51,602 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2024-11-23 18:30:51,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:30:51,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858280652] [2024-11-23 18:30:51,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858280652] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:30:51,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244155372] [2024-11-23 18:30:51,603 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:51,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:30:51,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:30:51,606 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:30:51,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 18:30:51,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:51,813 INFO L256 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 18:30:51,821 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:30:51,885 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2024-11-23 18:30:51,889 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:30:51,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244155372] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:30:51,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:30:51,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-23 18:30:51,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451080313] [2024-11-23 18:30:51,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:30:51,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:30:51,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:30:51,891 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:30:51,891 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:30:51,891 INFO L87 Difference]: Start difference. First operand 247 states and 350 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-23 18:30:51,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:30:51,991 INFO L93 Difference]: Finished difference Result 468 states and 678 transitions. [2024-11-23 18:30:51,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:30:51,992 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 146 [2024-11-23 18:30:51,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:30:51,995 INFO L225 Difference]: With dead ends: 468 [2024-11-23 18:30:51,995 INFO L226 Difference]: Without dead ends: 279 [2024-11-23 18:30:51,996 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:30:51,996 INFO L435 NwaCegarLoop]: 261 mSDtfsCounter, 33 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:30:51,997 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 729 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:30:51,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2024-11-23 18:30:52,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2024-11-23 18:30:52,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 221 states have (on average 1.3665158371040724) internal successors, (302), 225 states have internal predecessors, (302), 46 states have call successors, (46), 11 states have call predecessors, (46), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-23 18:30:52,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 394 transitions. [2024-11-23 18:30:52,018 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 394 transitions. Word has length 146 [2024-11-23 18:30:52,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:30:52,018 INFO L471 AbstractCegarLoop]: Abstraction has 279 states and 394 transitions. [2024-11-23 18:30:52,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-23 18:30:52,019 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 394 transitions. [2024-11-23 18:30:52,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-23 18:30:52,021 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:30:52,021 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:30:52,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 18:30:52,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-23 18:30:52,222 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:30:52,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:30:52,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1774969279, now seen corresponding path program 2 times [2024-11-23 18:30:52,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:30:52,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589662685] [2024-11-23 18:30:52,222 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 18:30:52,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:30:52,249 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 18:30:52,249 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 18:30:52,310 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-11-23 18:30:52,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:30:52,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589662685] [2024-11-23 18:30:52,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589662685] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:30:52,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:30:52,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 18:30:52,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109676848] [2024-11-23 18:30:52,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:30:52,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:30:52,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:30:52,314 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:30:52,314 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:30:52,314 INFO L87 Difference]: Start difference. First operand 279 states and 394 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-23 18:30:52,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:30:52,362 INFO L93 Difference]: Finished difference Result 423 states and 613 transitions. [2024-11-23 18:30:52,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:30:52,363 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 146 [2024-11-23 18:30:52,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:30:52,365 INFO L225 Difference]: With dead ends: 423 [2024-11-23 18:30:52,366 INFO L226 Difference]: Without dead ends: 283 [2024-11-23 18:30:52,367 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:30:52,369 INFO L435 NwaCegarLoop]: 260 mSDtfsCounter, 3 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:30:52,369 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 773 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:30:52,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-11-23 18:30:52,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2024-11-23 18:30:52,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 224 states have (on average 1.3616071428571428) internal successors, (305), 228 states have internal predecessors, (305), 46 states have call successors, (46), 12 states have call predecessors, (46), 12 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-23 18:30:52,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 397 transitions. [2024-11-23 18:30:52,393 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 397 transitions. Word has length 146 [2024-11-23 18:30:52,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:30:52,393 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 397 transitions. [2024-11-23 18:30:52,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-23 18:30:52,394 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 397 transitions. [2024-11-23 18:30:52,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-23 18:30:52,396 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:30:52,397 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:30:52,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 18:30:52,397 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:30:52,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:30:52,398 INFO L85 PathProgramCache]: Analyzing trace with hash -976665692, now seen corresponding path program 1 times [2024-11-23 18:30:52,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:30:52,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447818502] [2024-11-23 18:30:52,398 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:52,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:30:52,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:52,587 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-11-23 18:30:52,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:30:52,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447818502] [2024-11-23 18:30:52,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447818502] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:30:52,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057131603] [2024-11-23 18:30:52,588 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:52,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:30:52,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:30:52,590 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:30:52,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 18:30:52,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:52,821 INFO L256 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 18:30:52,824 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:30:52,864 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-11-23 18:30:52,864 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:30:52,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057131603] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:30:52,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:30:52,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-23 18:30:52,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936928756] [2024-11-23 18:30:52,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:30:52,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:30:52,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:30:52,865 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:30:52,865 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:30:52,866 INFO L87 Difference]: Start difference. First operand 283 states and 397 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-23 18:30:52,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:30:52,925 INFO L93 Difference]: Finished difference Result 432 states and 621 transitions. [2024-11-23 18:30:52,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:30:52,926 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 153 [2024-11-23 18:30:52,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:30:52,929 INFO L225 Difference]: With dead ends: 432 [2024-11-23 18:30:52,933 INFO L226 Difference]: Without dead ends: 288 [2024-11-23 18:30:52,934 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:30:52,934 INFO L435 NwaCegarLoop]: 261 mSDtfsCounter, 4 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:30:52,935 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 775 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:30:52,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-11-23 18:30:52,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2024-11-23 18:30:52,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 228 states have (on average 1.355263157894737) internal successors, (309), 232 states have internal predecessors, (309), 46 states have call successors, (46), 13 states have call predecessors, (46), 13 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-23 18:30:52,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 401 transitions. [2024-11-23 18:30:52,958 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 401 transitions. Word has length 153 [2024-11-23 18:30:52,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:30:52,959 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 401 transitions. [2024-11-23 18:30:52,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-23 18:30:52,959 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 401 transitions. [2024-11-23 18:30:52,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-23 18:30:52,963 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:30:52,963 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:30:52,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-23 18:30:53,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-23 18:30:53,164 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:30:53,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:30:53,164 INFO L85 PathProgramCache]: Analyzing trace with hash -111657728, now seen corresponding path program 1 times [2024-11-23 18:30:53,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:30:53,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774304065] [2024-11-23 18:30:53,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:53,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:30:53,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:53,336 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2024-11-23 18:30:53,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:30:53,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774304065] [2024-11-23 18:30:53,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774304065] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:30:53,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647685708] [2024-11-23 18:30:53,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:53,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:30:53,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:30:53,339 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:30:53,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 18:30:53,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:53,569 INFO L256 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 18:30:53,573 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:30:53,615 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2024-11-23 18:30:53,615 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:30:53,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647685708] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:30:53,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:30:53,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-23 18:30:53,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897045097] [2024-11-23 18:30:53,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:30:53,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:30:53,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:30:53,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:30:53,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:30:53,618 INFO L87 Difference]: Start difference. First operand 288 states and 401 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2024-11-23 18:30:53,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:30:53,678 INFO L93 Difference]: Finished difference Result 436 states and 621 transitions. [2024-11-23 18:30:53,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:30:53,679 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 161 [2024-11-23 18:30:53,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:30:53,682 INFO L225 Difference]: With dead ends: 436 [2024-11-23 18:30:53,682 INFO L226 Difference]: Without dead ends: 287 [2024-11-23 18:30:53,683 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:30:53,683 INFO L435 NwaCegarLoop]: 258 mSDtfsCounter, 5 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:30:53,684 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 765 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:30:53,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2024-11-23 18:30:53,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2024-11-23 18:30:53,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 228 states have (on average 1.3421052631578947) internal successors, (306), 231 states have internal predecessors, (306), 45 states have call successors, (45), 13 states have call predecessors, (45), 13 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-23 18:30:53,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 396 transitions. [2024-11-23 18:30:53,701 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 396 transitions. Word has length 161 [2024-11-23 18:30:53,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:30:53,702 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 396 transitions. [2024-11-23 18:30:53,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2024-11-23 18:30:53,702 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 396 transitions. [2024-11-23 18:30:53,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-23 18:30:53,704 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:30:53,704 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:30:53,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-23 18:30:53,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-23 18:30:53,905 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:30:53,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:30:53,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1338057840, now seen corresponding path program 1 times [2024-11-23 18:30:53,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:30:53,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520014381] [2024-11-23 18:30:53,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:53,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:30:53,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:54,100 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2024-11-23 18:30:54,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:30:54,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520014381] [2024-11-23 18:30:54,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520014381] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:30:54,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497805390] [2024-11-23 18:30:54,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:54,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:30:54,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:30:54,104 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:30:54,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 18:30:54,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:54,342 INFO L256 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 18:30:54,346 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:30:54,369 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-23 18:30:54,370 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:30:54,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497805390] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:30:54,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:30:54,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-23 18:30:54,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915617608] [2024-11-23 18:30:54,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:30:54,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:30:54,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:30:54,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:30:54,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:30:54,373 INFO L87 Difference]: Start difference. First operand 287 states and 396 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 18:30:54,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:30:54,393 INFO L93 Difference]: Finished difference Result 434 states and 610 transitions. [2024-11-23 18:30:54,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:30:54,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 168 [2024-11-23 18:30:54,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:30:54,397 INFO L225 Difference]: With dead ends: 434 [2024-11-23 18:30:54,398 INFO L226 Difference]: Without dead ends: 286 [2024-11-23 18:30:54,398 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:30:54,399 INFO L435 NwaCegarLoop]: 256 mSDtfsCounter, 0 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:30:54,400 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 510 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:30:54,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2024-11-23 18:30:54,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2024-11-23 18:30:54,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 228 states have (on average 1.337719298245614) internal successors, (305), 230 states have internal predecessors, (305), 44 states have call successors, (44), 13 states have call predecessors, (44), 13 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-23 18:30:54,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 393 transitions. [2024-11-23 18:30:54,418 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 393 transitions. Word has length 168 [2024-11-23 18:30:54,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:30:54,419 INFO L471 AbstractCegarLoop]: Abstraction has 286 states and 393 transitions. [2024-11-23 18:30:54,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 18:30:54,419 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 393 transitions. [2024-11-23 18:30:54,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-23 18:30:54,423 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:30:54,423 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:30:54,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-23 18:30:54,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-23 18:30:54,624 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:30:54,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:30:54,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1019610705, now seen corresponding path program 1 times [2024-11-23 18:30:54,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:30:54,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123263334] [2024-11-23 18:30:54,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:54,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:30:54,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:54,819 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2024-11-23 18:30:54,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:30:54,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123263334] [2024-11-23 18:30:54,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123263334] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:30:54,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165517423] [2024-11-23 18:30:54,821 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:54,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:30:54,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:30:54,823 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:30:54,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 18:30:55,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:55,054 INFO L256 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-23 18:30:55,058 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:30:55,138 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-23 18:30:55,138 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:30:55,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165517423] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:30:55,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:30:55,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-23 18:30:55,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054653633] [2024-11-23 18:30:55,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:30:55,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:30:55,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:30:55,140 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:30:55,140 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:30:55,140 INFO L87 Difference]: Start difference. First operand 286 states and 393 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 18:30:55,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:30:55,266 INFO L93 Difference]: Finished difference Result 651 states and 901 transitions. [2024-11-23 18:30:55,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:30:55,266 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 171 [2024-11-23 18:30:55,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:30:55,272 INFO L225 Difference]: With dead ends: 651 [2024-11-23 18:30:55,273 INFO L226 Difference]: Without dead ends: 504 [2024-11-23 18:30:55,274 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:30:55,274 INFO L435 NwaCegarLoop]: 319 mSDtfsCounter, 335 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:30:55,274 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 713 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:30:55,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2024-11-23 18:30:55,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 498. [2024-11-23 18:30:55,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 393 states have (on average 1.3638676844783715) internal successors, (536), 395 states have internal predecessors, (536), 73 states have call successors, (73), 31 states have call predecessors, (73), 31 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2024-11-23 18:30:55,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 682 transitions. [2024-11-23 18:30:55,307 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 682 transitions. Word has length 171 [2024-11-23 18:30:55,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:30:55,308 INFO L471 AbstractCegarLoop]: Abstraction has 498 states and 682 transitions. [2024-11-23 18:30:55,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 18:30:55,309 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 682 transitions. [2024-11-23 18:30:55,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-23 18:30:55,312 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:30:55,312 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:30:55,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-23 18:30:55,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:30:55,513 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:30:55,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:30:55,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1518725476, now seen corresponding path program 1 times [2024-11-23 18:30:55,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:30:55,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105736846] [2024-11-23 18:30:55,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:55,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:30:55,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:55,720 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2024-11-23 18:30:55,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:30:55,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105736846] [2024-11-23 18:30:55,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105736846] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:30:55,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257122703] [2024-11-23 18:30:55,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:55,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:30:55,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:30:55,725 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:30:55,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-23 18:30:55,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:55,976 INFO L256 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 18:30:55,981 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:30:56,017 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2024-11-23 18:30:56,017 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:30:56,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257122703] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:30:56,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:30:56,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-23 18:30:56,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606180539] [2024-11-23 18:30:56,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:30:56,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:30:56,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:30:56,019 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:30:56,019 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:30:56,019 INFO L87 Difference]: Start difference. First operand 498 states and 682 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-23 18:30:56,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:30:56,142 INFO L93 Difference]: Finished difference Result 794 states and 1106 transitions. [2024-11-23 18:30:56,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:30:56,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 202 [2024-11-23 18:30:56,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:30:56,147 INFO L225 Difference]: With dead ends: 794 [2024-11-23 18:30:56,147 INFO L226 Difference]: Without dead ends: 498 [2024-11-23 18:30:56,148 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:30:56,149 INFO L435 NwaCegarLoop]: 241 mSDtfsCounter, 31 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:30:56,149 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 700 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:30:56,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2024-11-23 18:30:56,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 498. [2024-11-23 18:30:56,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 393 states have (on average 1.3486005089058524) internal successors, (530), 395 states have internal predecessors, (530), 73 states have call successors, (73), 31 states have call predecessors, (73), 31 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2024-11-23 18:30:56,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 676 transitions. [2024-11-23 18:30:56,199 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 676 transitions. Word has length 202 [2024-11-23 18:30:56,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:30:56,199 INFO L471 AbstractCegarLoop]: Abstraction has 498 states and 676 transitions. [2024-11-23 18:30:56,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-23 18:30:56,200 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 676 transitions. [2024-11-23 18:30:56,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-23 18:30:56,203 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:30:56,203 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:30:56,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-23 18:30:56,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:30:56,405 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:30:56,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:30:56,406 INFO L85 PathProgramCache]: Analyzing trace with hash -466205611, now seen corresponding path program 1 times [2024-11-23 18:30:56,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:30:56,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55218274] [2024-11-23 18:30:56,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:56,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:30:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:56,589 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2024-11-23 18:30:56,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:30:56,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55218274] [2024-11-23 18:30:56,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55218274] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:30:56,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776322801] [2024-11-23 18:30:56,590 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:56,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:30:56,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:30:56,592 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:30:56,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-23 18:30:56,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:56,834 INFO L256 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 18:30:56,839 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:30:56,875 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2024-11-23 18:30:56,875 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:30:56,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776322801] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:30:56,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:30:56,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-23 18:30:56,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043129285] [2024-11-23 18:30:56,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:30:56,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:30:56,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:30:56,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:30:56,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:30:56,878 INFO L87 Difference]: Start difference. First operand 498 states and 676 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-23 18:30:56,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:30:56,979 INFO L93 Difference]: Finished difference Result 794 states and 1092 transitions. [2024-11-23 18:30:56,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:30:56,980 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 203 [2024-11-23 18:30:56,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:30:56,984 INFO L225 Difference]: With dead ends: 794 [2024-11-23 18:30:56,984 INFO L226 Difference]: Without dead ends: 510 [2024-11-23 18:30:56,985 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:30:56,986 INFO L435 NwaCegarLoop]: 243 mSDtfsCounter, 7 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:30:56,986 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 708 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:30:56,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2024-11-23 18:30:57,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 510. [2024-11-23 18:30:57,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 403 states have (on average 1.349875930521092) internal successors, (544), 405 states have internal predecessors, (544), 73 states have call successors, (73), 33 states have call predecessors, (73), 33 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2024-11-23 18:30:57,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 690 transitions. [2024-11-23 18:30:57,018 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 690 transitions. Word has length 203 [2024-11-23 18:30:57,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:30:57,023 INFO L471 AbstractCegarLoop]: Abstraction has 510 states and 690 transitions. [2024-11-23 18:30:57,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-23 18:30:57,023 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 690 transitions. [2024-11-23 18:30:57,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-23 18:30:57,026 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:30:57,026 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:30:57,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-23 18:30:57,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:30:57,227 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:30:57,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:30:57,227 INFO L85 PathProgramCache]: Analyzing trace with hash 322582070, now seen corresponding path program 1 times [2024-11-23 18:30:57,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:30:57,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103338577] [2024-11-23 18:30:57,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:57,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:30:57,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:57,384 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2024-11-23 18:30:57,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:30:57,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103338577] [2024-11-23 18:30:57,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103338577] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:30:57,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502486943] [2024-11-23 18:30:57,385 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:57,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:30:57,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:30:57,387 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:30:57,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-23 18:30:57,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:57,627 INFO L256 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-23 18:30:57,631 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:30:57,775 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2024-11-23 18:30:57,775 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:30:57,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502486943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:30:57,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:30:57,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-23 18:30:57,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133371813] [2024-11-23 18:30:57,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:30:57,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:30:57,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:30:57,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:30:57,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:30:57,778 INFO L87 Difference]: Start difference. First operand 510 states and 690 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-23 18:30:57,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:30:57,835 INFO L93 Difference]: Finished difference Result 1112 states and 1526 transitions. [2024-11-23 18:30:57,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:30:57,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 204 [2024-11-23 18:30:57,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:30:57,842 INFO L225 Difference]: With dead ends: 1112 [2024-11-23 18:30:57,842 INFO L226 Difference]: Without dead ends: 816 [2024-11-23 18:30:57,843 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:30:57,845 INFO L435 NwaCegarLoop]: 285 mSDtfsCounter, 164 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:30:57,845 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 530 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:30:57,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2024-11-23 18:30:57,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 633. [2024-11-23 18:30:57,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 501 states have (on average 1.3532934131736527) internal successors, (678), 507 states have internal predecessors, (678), 88 states have call successors, (88), 43 states have call predecessors, (88), 43 states have return successors, (88), 84 states have call predecessors, (88), 88 states have call successors, (88) [2024-11-23 18:30:57,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 854 transitions. [2024-11-23 18:30:57,889 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 854 transitions. Word has length 204 [2024-11-23 18:30:57,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:30:57,890 INFO L471 AbstractCegarLoop]: Abstraction has 633 states and 854 transitions. [2024-11-23 18:30:57,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-23 18:30:57,890 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 854 transitions. [2024-11-23 18:30:57,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-23 18:30:57,893 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:30:57,893 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:30:57,904 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-23 18:30:58,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:30:58,098 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:30:58,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:30:58,098 INFO L85 PathProgramCache]: Analyzing trace with hash -374103570, now seen corresponding path program 1 times [2024-11-23 18:30:58,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:30:58,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972795311] [2024-11-23 18:30:58,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:58,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:30:58,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:58,258 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2024-11-23 18:30:58,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:30:58,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972795311] [2024-11-23 18:30:58,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972795311] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:30:58,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110049042] [2024-11-23 18:30:58,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:58,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:30:58,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:30:58,261 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:30:58,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-23 18:30:58,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:58,510 INFO L256 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-23 18:30:58,517 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:30:58,593 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2024-11-23 18:30:58,596 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:30:58,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110049042] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:30:58,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:30:58,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-23 18:30:58,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171330958] [2024-11-23 18:30:58,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:30:58,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:30:58,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:30:58,599 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:30:58,599 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:30:58,600 INFO L87 Difference]: Start difference. First operand 633 states and 854 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-23 18:30:58,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:30:58,681 INFO L93 Difference]: Finished difference Result 1395 states and 1902 transitions. [2024-11-23 18:30:58,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:30:58,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 205 [2024-11-23 18:30:58,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:30:58,689 INFO L225 Difference]: With dead ends: 1395 [2024-11-23 18:30:58,690 INFO L226 Difference]: Without dead ends: 1012 [2024-11-23 18:30:58,691 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:30:58,692 INFO L435 NwaCegarLoop]: 299 mSDtfsCounter, 168 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:30:58,692 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 546 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:30:58,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2024-11-23 18:30:58,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1004. [2024-11-23 18:30:58,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 790 states have (on average 1.3658227848101265) internal successors, (1079), 804 states have internal predecessors, (1079), 142 states have call successors, (142), 71 states have call predecessors, (142), 71 states have return successors, (142), 132 states have call predecessors, (142), 142 states have call successors, (142) [2024-11-23 18:30:58,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1363 transitions. [2024-11-23 18:30:58,770 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1363 transitions. Word has length 205 [2024-11-23 18:30:58,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:30:58,770 INFO L471 AbstractCegarLoop]: Abstraction has 1004 states and 1363 transitions. [2024-11-23 18:30:58,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-23 18:30:58,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1363 transitions. [2024-11-23 18:30:58,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-23 18:30:58,774 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:30:58,774 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:30:58,785 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-23 18:30:58,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-23 18:30:58,976 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:30:58,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:30:58,977 INFO L85 PathProgramCache]: Analyzing trace with hash -922436527, now seen corresponding path program 1 times [2024-11-23 18:30:58,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:30:58,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219024427] [2024-11-23 18:30:58,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:58,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:30:59,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:59,156 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2024-11-23 18:30:59,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:30:59,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219024427] [2024-11-23 18:30:59,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219024427] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:30:59,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844876473] [2024-11-23 18:30:59,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:59,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:30:59,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:30:59,159 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:30:59,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-23 18:30:59,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:59,402 INFO L256 TraceCheckSpWp]: Trace formula consists of 812 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-23 18:30:59,408 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:30:59,466 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2024-11-23 18:30:59,466 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:30:59,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844876473] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:30:59,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:30:59,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-23 18:30:59,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448603299] [2024-11-23 18:30:59,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:30:59,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:30:59,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:30:59,468 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:30:59,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:30:59,469 INFO L87 Difference]: Start difference. First operand 1004 states and 1363 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-23 18:30:59,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:30:59,592 INFO L93 Difference]: Finished difference Result 2340 states and 3213 transitions. [2024-11-23 18:30:59,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:30:59,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 206 [2024-11-23 18:30:59,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:30:59,604 INFO L225 Difference]: With dead ends: 2340 [2024-11-23 18:30:59,604 INFO L226 Difference]: Without dead ends: 1632 [2024-11-23 18:30:59,607 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:30:59,607 INFO L435 NwaCegarLoop]: 314 mSDtfsCounter, 175 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:30:59,608 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 563 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:30:59,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2024-11-23 18:30:59,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1618. [2024-11-23 18:30:59,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1618 states, 1268 states have (on average 1.3809148264984228) internal successors, (1751), 1296 states have internal predecessors, (1751), 234 states have call successors, (234), 115 states have call predecessors, (234), 115 states have return successors, (234), 214 states have call predecessors, (234), 234 states have call successors, (234) [2024-11-23 18:30:59,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 2219 transitions. [2024-11-23 18:30:59,735 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 2219 transitions. Word has length 206 [2024-11-23 18:30:59,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:30:59,735 INFO L471 AbstractCegarLoop]: Abstraction has 1618 states and 2219 transitions. [2024-11-23 18:30:59,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-23 18:30:59,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 2219 transitions. [2024-11-23 18:30:59,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-23 18:30:59,740 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:30:59,740 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:30:59,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-23 18:30:59,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:30:59,941 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:30:59,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:30:59,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1951795825, now seen corresponding path program 1 times [2024-11-23 18:30:59,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:30:59,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430417500] [2024-11-23 18:30:59,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:59,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:30:59,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:00,111 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2024-11-23 18:31:00,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:31:00,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430417500] [2024-11-23 18:31:00,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430417500] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:31:00,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333035673] [2024-11-23 18:31:00,111 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:00,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:31:00,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:31:00,116 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:31:00,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-23 18:31:00,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:00,362 INFO L256 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 18:31:00,367 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:31:00,398 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-11-23 18:31:00,398 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:31:00,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333035673] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:31:00,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:31:00,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-23 18:31:00,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949585310] [2024-11-23 18:31:00,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:31:00,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:31:00,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:31:00,399 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:31:00,399 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:31:00,400 INFO L87 Difference]: Start difference. First operand 1618 states and 2219 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-23 18:31:00,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:31:00,506 INFO L93 Difference]: Finished difference Result 3079 states and 4237 transitions. [2024-11-23 18:31:00,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:31:00,506 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 206 [2024-11-23 18:31:00,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:31:00,517 INFO L225 Difference]: With dead ends: 3079 [2024-11-23 18:31:00,518 INFO L226 Difference]: Without dead ends: 1620 [2024-11-23 18:31:00,521 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:31:00,522 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 0 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:31:00,522 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1019 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:31:00,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1620 states. [2024-11-23 18:31:00,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1620 to 1618. [2024-11-23 18:31:00,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1618 states, 1268 states have (on average 1.3761829652996846) internal successors, (1745), 1296 states have internal predecessors, (1745), 234 states have call successors, (234), 115 states have call predecessors, (234), 115 states have return successors, (234), 214 states have call predecessors, (234), 234 states have call successors, (234) [2024-11-23 18:31:00,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 2213 transitions. [2024-11-23 18:31:00,639 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 2213 transitions. Word has length 206 [2024-11-23 18:31:00,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:31:00,639 INFO L471 AbstractCegarLoop]: Abstraction has 1618 states and 2213 transitions. [2024-11-23 18:31:00,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-23 18:31:00,641 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 2213 transitions. [2024-11-23 18:31:00,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-11-23 18:31:00,645 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:31:00,645 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 8, 8, 7, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:31:00,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-23 18:31:00,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:31:00,845 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:31:00,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:31:00,846 INFO L85 PathProgramCache]: Analyzing trace with hash -984539219, now seen corresponding path program 1 times [2024-11-23 18:31:00,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:31:00,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981264336] [2024-11-23 18:31:00,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:00,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:31:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:00,997 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2024-11-23 18:31:00,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:31:00,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981264336] [2024-11-23 18:31:00,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981264336] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:31:00,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109952115] [2024-11-23 18:31:00,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:00,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:31:00,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:31:01,001 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:31:01,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-23 18:31:01,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:01,272 INFO L256 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 18:31:01,278 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:31:01,353 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 129 proven. 11 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2024-11-23 18:31:01,354 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:31:01,585 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2024-11-23 18:31:01,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109952115] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 18:31:01,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-23 18:31:01,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 8 [2024-11-23 18:31:01,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247941913] [2024-11-23 18:31:01,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:31:01,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:31:01,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:31:01,589 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:31:01,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:31:01,590 INFO L87 Difference]: Start difference. First operand 1618 states and 2213 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 18:31:01,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:31:01,771 INFO L93 Difference]: Finished difference Result 3101 states and 4261 transitions. [2024-11-23 18:31:01,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:31:01,772 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 213 [2024-11-23 18:31:01,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:31:01,791 INFO L225 Difference]: With dead ends: 3101 [2024-11-23 18:31:01,791 INFO L226 Difference]: Without dead ends: 1609 [2024-11-23 18:31:01,796 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 423 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:31:01,797 INFO L435 NwaCegarLoop]: 251 mSDtfsCounter, 35 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:31:01,799 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 479 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:31:01,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1609 states. [2024-11-23 18:31:01,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1609 to 1609. [2024-11-23 18:31:01,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1609 states, 1262 states have (on average 1.3708399366085577) internal successors, (1730), 1290 states have internal predecessors, (1730), 231 states have call successors, (231), 115 states have call predecessors, (231), 115 states have return successors, (231), 211 states have call predecessors, (231), 231 states have call successors, (231) [2024-11-23 18:31:01,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1609 states to 1609 states and 2192 transitions. [2024-11-23 18:31:01,929 INFO L78 Accepts]: Start accepts. Automaton has 1609 states and 2192 transitions. Word has length 213 [2024-11-23 18:31:01,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:31:01,930 INFO L471 AbstractCegarLoop]: Abstraction has 1609 states and 2192 transitions. [2024-11-23 18:31:01,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 18:31:01,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1609 states and 2192 transitions. [2024-11-23 18:31:01,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-11-23 18:31:01,935 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:31:01,935 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 8, 8, 7, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:31:01,949 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-23 18:31:02,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-23 18:31:02,136 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:31:02,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:31:02,137 INFO L85 PathProgramCache]: Analyzing trace with hash 181069920, now seen corresponding path program 1 times [2024-11-23 18:31:02,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:31:02,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859071278] [2024-11-23 18:31:02,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:02,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:31:02,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:02,287 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2024-11-23 18:31:02,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:31:02,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859071278] [2024-11-23 18:31:02,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859071278] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:31:02,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703833425] [2024-11-23 18:31:02,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:02,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:31:02,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:31:02,291 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:31:02,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-23 18:31:02,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:02,541 INFO L256 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 18:31:02,545 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:31:02,565 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2024-11-23 18:31:02,566 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:31:02,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703833425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:31:02,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:31:02,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2024-11-23 18:31:02,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987328544] [2024-11-23 18:31:02,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:31:02,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:31:02,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:31:02,567 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:31:02,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:31:02,568 INFO L87 Difference]: Start difference. First operand 1609 states and 2192 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-23 18:31:02,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:31:02,680 INFO L93 Difference]: Finished difference Result 3109 states and 4254 transitions. [2024-11-23 18:31:02,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:31:02,680 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 237 [2024-11-23 18:31:02,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:31:02,689 INFO L225 Difference]: With dead ends: 3109 [2024-11-23 18:31:02,689 INFO L226 Difference]: Without dead ends: 1609 [2024-11-23 18:31:02,693 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:31:02,693 INFO L435 NwaCegarLoop]: 256 mSDtfsCounter, 0 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:31:02,694 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1016 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:31:02,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1609 states. [2024-11-23 18:31:02,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1609 to 1609. [2024-11-23 18:31:02,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1609 states, 1262 states have (on average 1.3684627575277337) internal successors, (1727), 1290 states have internal predecessors, (1727), 231 states have call successors, (231), 115 states have call predecessors, (231), 115 states have return successors, (231), 211 states have call predecessors, (231), 231 states have call successors, (231) [2024-11-23 18:31:02,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1609 states to 1609 states and 2189 transitions. [2024-11-23 18:31:02,785 INFO L78 Accepts]: Start accepts. Automaton has 1609 states and 2189 transitions. Word has length 237 [2024-11-23 18:31:02,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:31:02,786 INFO L471 AbstractCegarLoop]: Abstraction has 1609 states and 2189 transitions. [2024-11-23 18:31:02,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-23 18:31:02,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1609 states and 2189 transitions. [2024-11-23 18:31:02,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-23 18:31:02,790 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:31:02,790 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 9, 7, 7, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:31:02,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-23 18:31:02,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-23 18:31:02,991 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:31:02,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:31:02,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1381168359, now seen corresponding path program 1 times [2024-11-23 18:31:02,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:31:02,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093444085] [2024-11-23 18:31:02,992 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:02,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:31:03,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:03,110 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 83 proven. 73 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2024-11-23 18:31:03,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:31:03,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093444085] [2024-11-23 18:31:03,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093444085] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:31:03,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929868511] [2024-11-23 18:31:03,111 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:03,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:31:03,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:31:03,113 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:31:03,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-23 18:31:03,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:03,346 INFO L256 TraceCheckSpWp]: Trace formula consists of 874 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 18:31:03,351 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:31:03,392 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 260 proven. 9 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2024-11-23 18:31:03,392 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:31:03,576 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 92 proven. 64 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2024-11-23 18:31:03,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929868511] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:31:03,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:31:03,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2024-11-23 18:31:03,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580104459] [2024-11-23 18:31:03,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:31:03,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:31:03,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:31:03,578 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:31:03,579 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:31:03,579 INFO L87 Difference]: Start difference. First operand 1609 states and 2189 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-23 18:31:03,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:31:03,721 INFO L93 Difference]: Finished difference Result 3147 states and 4297 transitions. [2024-11-23 18:31:03,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:31:03,721 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 243 [2024-11-23 18:31:03,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:31:03,731 INFO L225 Difference]: With dead ends: 3147 [2024-11-23 18:31:03,731 INFO L226 Difference]: Without dead ends: 1606 [2024-11-23 18:31:03,735 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 486 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:31:03,736 INFO L435 NwaCegarLoop]: 242 mSDtfsCounter, 32 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:31:03,739 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 912 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:31:03,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2024-11-23 18:31:03,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1606. [2024-11-23 18:31:03,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1606 states, 1259 states have (on average 1.3669579030976966) internal successors, (1721), 1287 states have internal predecessors, (1721), 231 states have call successors, (231), 115 states have call predecessors, (231), 115 states have return successors, (231), 211 states have call predecessors, (231), 231 states have call successors, (231) [2024-11-23 18:31:03,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2183 transitions. [2024-11-23 18:31:03,894 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2183 transitions. Word has length 243 [2024-11-23 18:31:03,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:31:03,895 INFO L471 AbstractCegarLoop]: Abstraction has 1606 states and 2183 transitions. [2024-11-23 18:31:03,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-23 18:31:03,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2183 transitions. [2024-11-23 18:31:03,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-23 18:31:03,900 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:31:03,900 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:31:03,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-23 18:31:04,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-23 18:31:04,105 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:31:04,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:31:04,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1839717551, now seen corresponding path program 1 times [2024-11-23 18:31:04,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:31:04,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405890731] [2024-11-23 18:31:04,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:04,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:31:04,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:04,681 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2024-11-23 18:31:04,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:31:04,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405890731] [2024-11-23 18:31:04,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405890731] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:31:04,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:31:04,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 18:31:04,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967018291] [2024-11-23 18:31:04,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:31:04,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 18:31:04,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:31:04,684 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 18:31:04,684 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:31:04,684 INFO L87 Difference]: Start difference. First operand 1606 states and 2183 transitions. Second operand has 6 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-23 18:31:04,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:31:04,858 INFO L93 Difference]: Finished difference Result 2444 states and 3546 transitions. [2024-11-23 18:31:04,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 18:31:04,859 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 270 [2024-11-23 18:31:04,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:31:04,873 INFO L225 Difference]: With dead ends: 2444 [2024-11-23 18:31:04,873 INFO L226 Difference]: Without dead ends: 2442 [2024-11-23 18:31:04,875 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:31:04,876 INFO L435 NwaCegarLoop]: 394 mSDtfsCounter, 116 mSDsluCounter, 1438 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1832 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:31:04,876 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 1832 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:31:04,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2442 states. [2024-11-23 18:31:05,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2442 to 1654. [2024-11-23 18:31:05,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1654 states, 1291 states have (on average 1.3578621223857474) internal successors, (1753), 1327 states have internal predecessors, (1753), 239 states have call successors, (239), 123 states have call predecessors, (239), 123 states have return successors, (239), 211 states have call predecessors, (239), 239 states have call successors, (239) [2024-11-23 18:31:05,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1654 states to 1654 states and 2231 transitions. [2024-11-23 18:31:05,070 INFO L78 Accepts]: Start accepts. Automaton has 1654 states and 2231 transitions. Word has length 270 [2024-11-23 18:31:05,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:31:05,070 INFO L471 AbstractCegarLoop]: Abstraction has 1654 states and 2231 transitions. [2024-11-23 18:31:05,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-23 18:31:05,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1654 states and 2231 transitions. [2024-11-23 18:31:05,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2024-11-23 18:31:05,076 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:31:05,076 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:31:05,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-23 18:31:05,076 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:31:05,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:31:05,077 INFO L85 PathProgramCache]: Analyzing trace with hash -413546924, now seen corresponding path program 1 times [2024-11-23 18:31:05,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:31:05,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847244384] [2024-11-23 18:31:05,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:05,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:31:05,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:05,530 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 142 proven. 27 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2024-11-23 18:31:05,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:31:05,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847244384] [2024-11-23 18:31:05,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847244384] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:31:05,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731796004] [2024-11-23 18:31:05,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:05,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:31:05,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:31:05,533 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:31:05,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-23 18:31:05,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:05,793 INFO L256 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-23 18:31:05,798 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:31:06,096 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 251 proven. 37 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2024-11-23 18:31:06,097 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:31:06,629 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 146 proven. 23 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2024-11-23 18:31:06,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731796004] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:31:06,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:31:06,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2024-11-23 18:31:06,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916021712] [2024-11-23 18:31:06,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:31:06,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-23 18:31:06,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:31:06,632 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-23 18:31:06,632 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-23 18:31:06,632 INFO L87 Difference]: Start difference. First operand 1654 states and 2231 transitions. Second operand has 18 states, 18 states have (on average 8.333333333333334) internal successors, (150), 14 states have internal predecessors, (150), 5 states have call successors, (29), 4 states have call predecessors, (29), 9 states have return successors, (31), 8 states have call predecessors, (31), 5 states have call successors, (31) [2024-11-23 18:31:07,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:31:07,516 INFO L93 Difference]: Finished difference Result 4058 states and 5664 transitions. [2024-11-23 18:31:07,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-23 18:31:07,517 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.333333333333334) internal successors, (150), 14 states have internal predecessors, (150), 5 states have call successors, (29), 4 states have call predecessors, (29), 9 states have return successors, (31), 8 states have call predecessors, (31), 5 states have call successors, (31) Word has length 278 [2024-11-23 18:31:07,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:31:07,533 INFO L225 Difference]: With dead ends: 4058 [2024-11-23 18:31:07,534 INFO L226 Difference]: Without dead ends: 2708 [2024-11-23 18:31:07,538 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 547 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2024-11-23 18:31:07,542 INFO L435 NwaCegarLoop]: 363 mSDtfsCounter, 337 mSDsluCounter, 3128 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 3491 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 18:31:07,542 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 3491 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 18:31:07,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2708 states. [2024-11-23 18:31:07,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2708 to 2480. [2024-11-23 18:31:07,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2480 states, 1934 states have (on average 1.3536711478800414) internal successors, (2618), 1986 states have internal predecessors, (2618), 356 states have call successors, (356), 183 states have call predecessors, (356), 189 states have return successors, (364), 318 states have call predecessors, (364), 356 states have call successors, (364) [2024-11-23 18:31:07,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2480 states to 2480 states and 3338 transitions. [2024-11-23 18:31:07,751 INFO L78 Accepts]: Start accepts. Automaton has 2480 states and 3338 transitions. Word has length 278 [2024-11-23 18:31:07,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:31:07,752 INFO L471 AbstractCegarLoop]: Abstraction has 2480 states and 3338 transitions. [2024-11-23 18:31:07,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.333333333333334) internal successors, (150), 14 states have internal predecessors, (150), 5 states have call successors, (29), 4 states have call predecessors, (29), 9 states have return successors, (31), 8 states have call predecessors, (31), 5 states have call successors, (31) [2024-11-23 18:31:07,752 INFO L276 IsEmpty]: Start isEmpty. Operand 2480 states and 3338 transitions. [2024-11-23 18:31:07,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2024-11-23 18:31:07,758 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:31:07,759 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:31:07,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-23 18:31:07,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:31:07,963 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:31:07,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:31:07,963 INFO L85 PathProgramCache]: Analyzing trace with hash 548067093, now seen corresponding path program 1 times [2024-11-23 18:31:07,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:31:07,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207745471] [2024-11-23 18:31:07,963 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:07,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:31:08,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:08,152 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2024-11-23 18:31:08,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:31:08,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207745471] [2024-11-23 18:31:08,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207745471] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:31:08,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588555424] [2024-11-23 18:31:08,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:08,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:31:08,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:31:08,156 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:31:08,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-23 18:31:08,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:08,429 INFO L256 TraceCheckSpWp]: Trace formula consists of 972 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 18:31:08,434 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:31:08,454 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 611 trivial. 0 not checked. [2024-11-23 18:31:08,454 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:31:08,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588555424] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:31:08,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:31:08,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-23 18:31:08,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142013199] [2024-11-23 18:31:08,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:31:08,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:31:08,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:31:08,456 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:31:08,456 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:31:08,456 INFO L87 Difference]: Start difference. First operand 2480 states and 3338 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-23 18:31:08,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:31:08,653 INFO L93 Difference]: Finished difference Result 4793 states and 6552 transitions. [2024-11-23 18:31:08,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:31:08,653 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 278 [2024-11-23 18:31:08,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:31:08,668 INFO L225 Difference]: With dead ends: 4793 [2024-11-23 18:31:08,668 INFO L226 Difference]: Without dead ends: 2416 [2024-11-23 18:31:08,674 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:31:08,675 INFO L435 NwaCegarLoop]: 240 mSDtfsCounter, 4 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:31:08,675 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 699 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:31:08,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2416 states. [2024-11-23 18:31:08,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2416 to 2416. [2024-11-23 18:31:08,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2416 states, 1890 states have (on average 1.3375661375661376) internal successors, (2528), 1942 states have internal predecessors, (2528), 340 states have call successors, (340), 183 states have call predecessors, (340), 185 states have return successors, (344), 298 states have call predecessors, (344), 340 states have call successors, (344) [2024-11-23 18:31:08,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2416 states to 2416 states and 3212 transitions. [2024-11-23 18:31:08,830 INFO L78 Accepts]: Start accepts. Automaton has 2416 states and 3212 transitions. Word has length 278 [2024-11-23 18:31:08,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:31:08,831 INFO L471 AbstractCegarLoop]: Abstraction has 2416 states and 3212 transitions. [2024-11-23 18:31:08,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-23 18:31:08,831 INFO L276 IsEmpty]: Start isEmpty. Operand 2416 states and 3212 transitions. [2024-11-23 18:31:08,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2024-11-23 18:31:08,837 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:31:08,838 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:31:08,848 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-23 18:31:09,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:31:09,038 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:31:09,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:31:09,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1038977620, now seen corresponding path program 1 times [2024-11-23 18:31:09,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:31:09,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779820275] [2024-11-23 18:31:09,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:09,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:31:09,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:09,187 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 121 proven. 19 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2024-11-23 18:31:09,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:31:09,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779820275] [2024-11-23 18:31:09,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779820275] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:31:09,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885197045] [2024-11-23 18:31:09,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:09,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:31:09,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:31:09,190 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:31:09,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-23 18:31:09,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:09,510 INFO L256 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 18:31:09,514 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:31:09,535 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2024-11-23 18:31:09,536 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:31:09,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885197045] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:31:09,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:31:09,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-23 18:31:09,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3852822] [2024-11-23 18:31:09,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:31:09,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:31:09,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:31:09,539 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:31:09,539 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:31:09,540 INFO L87 Difference]: Start difference. First operand 2416 states and 3212 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 18:31:09,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:31:09,709 INFO L93 Difference]: Finished difference Result 4551 states and 6145 transitions. [2024-11-23 18:31:09,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:31:09,710 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 281 [2024-11-23 18:31:09,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:31:09,723 INFO L225 Difference]: With dead ends: 4551 [2024-11-23 18:31:09,726 INFO L226 Difference]: Without dead ends: 2220 [2024-11-23 18:31:09,733 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:31:09,734 INFO L435 NwaCegarLoop]: 251 mSDtfsCounter, 4 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:31:09,734 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 727 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:31:09,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2220 states. [2024-11-23 18:31:09,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2220 to 2220. [2024-11-23 18:31:09,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2220 states, 1724 states have (on average 1.324245939675174) internal successors, (2283), 1776 states have internal predecessors, (2283), 323 states have call successors, (323), 172 states have call predecessors, (323), 172 states have return successors, (323), 279 states have call predecessors, (323), 323 states have call successors, (323) [2024-11-23 18:31:09,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2220 states to 2220 states and 2929 transitions. [2024-11-23 18:31:09,893 INFO L78 Accepts]: Start accepts. Automaton has 2220 states and 2929 transitions. Word has length 281 [2024-11-23 18:31:09,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:31:09,894 INFO L471 AbstractCegarLoop]: Abstraction has 2220 states and 2929 transitions. [2024-11-23 18:31:09,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 18:31:09,894 INFO L276 IsEmpty]: Start isEmpty. Operand 2220 states and 2929 transitions. [2024-11-23 18:31:09,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2024-11-23 18:31:09,898 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:31:09,898 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 8, 8, 8, 7, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:31:09,909 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-23 18:31:10,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:31:10,103 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:31:10,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:31:10,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1369389821, now seen corresponding path program 1 times [2024-11-23 18:31:10,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:31:10,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141393131] [2024-11-23 18:31:10,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:10,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:31:10,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:10,582 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 719 trivial. 0 not checked. [2024-11-23 18:31:10,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:31:10,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141393131] [2024-11-23 18:31:10,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141393131] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:31:10,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371022074] [2024-11-23 18:31:10,584 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:10,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:31:10,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:31:10,586 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:31:10,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-23 18:31:10,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:10,869 INFO L256 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-23 18:31:10,875 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:31:11,044 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2024-11-23 18:31:11,044 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:31:11,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371022074] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:31:11,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:31:11,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2024-11-23 18:31:11,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855490534] [2024-11-23 18:31:11,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:31:11,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 18:31:11,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:31:11,046 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 18:31:11,046 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2024-11-23 18:31:11,046 INFO L87 Difference]: Start difference. First operand 2220 states and 2929 transitions. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-23 18:31:11,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:31:11,605 INFO L93 Difference]: Finished difference Result 5562 states and 7317 transitions. [2024-11-23 18:31:11,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 18:31:11,606 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 293 [2024-11-23 18:31:11,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:31:11,631 INFO L225 Difference]: With dead ends: 5562 [2024-11-23 18:31:11,631 INFO L226 Difference]: Without dead ends: 3948 [2024-11-23 18:31:11,638 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2024-11-23 18:31:11,639 INFO L435 NwaCegarLoop]: 316 mSDtfsCounter, 128 mSDsluCounter, 1377 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 1693 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 18:31:11,639 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 1693 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 18:31:11,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3948 states. [2024-11-23 18:31:11,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3948 to 3934. [2024-11-23 18:31:11,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3934 states, 3034 states have (on average 1.3098220171390904) internal successors, (3974), 3134 states have internal predecessors, (3974), 583 states have call successors, (583), 316 states have call predecessors, (583), 316 states have return successors, (583), 491 states have call predecessors, (583), 583 states have call successors, (583) [2024-11-23 18:31:12,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3934 states to 3934 states and 5140 transitions. [2024-11-23 18:31:12,022 INFO L78 Accepts]: Start accepts. Automaton has 3934 states and 5140 transitions. Word has length 293 [2024-11-23 18:31:12,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:31:12,023 INFO L471 AbstractCegarLoop]: Abstraction has 3934 states and 5140 transitions. [2024-11-23 18:31:12,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-23 18:31:12,023 INFO L276 IsEmpty]: Start isEmpty. Operand 3934 states and 5140 transitions. [2024-11-23 18:31:12,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2024-11-23 18:31:12,030 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:31:12,030 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 8, 8, 8, 7, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:31:12,041 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-23 18:31:12,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-23 18:31:12,232 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:31:12,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:31:12,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1529579416, now seen corresponding path program 1 times [2024-11-23 18:31:12,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:31:12,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297107729] [2024-11-23 18:31:12,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:12,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:31:12,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:12,546 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 733 trivial. 0 not checked. [2024-11-23 18:31:12,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:31:12,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297107729] [2024-11-23 18:31:12,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297107729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:31:12,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:31:12,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 18:31:12,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099457302] [2024-11-23 18:31:12,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:31:12,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:31:12,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:31:12,549 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:31:12,550 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:31:12,550 INFO L87 Difference]: Start difference. First operand 3934 states and 5140 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-23 18:31:12,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:31:12,924 INFO L93 Difference]: Finished difference Result 8956 states and 11648 transitions. [2024-11-23 18:31:12,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:31:12,925 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 295 [2024-11-23 18:31:12,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:31:12,954 INFO L225 Difference]: With dead ends: 8956 [2024-11-23 18:31:12,954 INFO L226 Difference]: Without dead ends: 5306 [2024-11-23 18:31:12,961 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:31:12,962 INFO L435 NwaCegarLoop]: 331 mSDtfsCounter, 319 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:31:12,962 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 731 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:31:12,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5306 states. [2024-11-23 18:31:13,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5306 to 4594. [2024-11-23 18:31:13,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4594 states, 3523 states have (on average 1.2963383479988646) internal successors, (4567), 3635 states have internal predecessors, (4567), 687 states have call successors, (687), 383 states have call predecessors, (687), 383 states have return successors, (687), 583 states have call predecessors, (687), 687 states have call successors, (687) [2024-11-23 18:31:13,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4594 states to 4594 states and 5941 transitions. [2024-11-23 18:31:13,316 INFO L78 Accepts]: Start accepts. Automaton has 4594 states and 5941 transitions. Word has length 295 [2024-11-23 18:31:13,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:31:13,317 INFO L471 AbstractCegarLoop]: Abstraction has 4594 states and 5941 transitions. [2024-11-23 18:31:13,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-23 18:31:13,318 INFO L276 IsEmpty]: Start isEmpty. Operand 4594 states and 5941 transitions. [2024-11-23 18:31:13,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2024-11-23 18:31:13,322 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:31:13,322 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:31:13,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-23 18:31:13,322 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:31:13,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:31:13,323 INFO L85 PathProgramCache]: Analyzing trace with hash 517139162, now seen corresponding path program 1 times [2024-11-23 18:31:13,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:31:13,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012469011] [2024-11-23 18:31:13,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:13,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:31:13,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:13,582 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 774 trivial. 0 not checked. [2024-11-23 18:31:13,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:31:13,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012469011] [2024-11-23 18:31:13,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012469011] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:31:13,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:31:13,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 18:31:13,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000505205] [2024-11-23 18:31:13,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:31:13,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 18:31:13,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:31:13,583 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 18:31:13,584 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:31:13,584 INFO L87 Difference]: Start difference. First operand 4594 states and 5941 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 5 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-23 18:31:13,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:31:13,918 INFO L93 Difference]: Finished difference Result 9186 states and 12149 transitions. [2024-11-23 18:31:13,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 18:31:13,918 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 5 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 299 [2024-11-23 18:31:13,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:31:13,945 INFO L225 Difference]: With dead ends: 9186 [2024-11-23 18:31:13,945 INFO L226 Difference]: Without dead ends: 5098 [2024-11-23 18:31:13,955 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:31:13,955 INFO L435 NwaCegarLoop]: 270 mSDtfsCounter, 32 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:31:13,956 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 1022 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:31:13,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5098 states. [2024-11-23 18:31:14,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5098 to 4990. [2024-11-23 18:31:14,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4990 states, 3847 states have (on average 1.3108916038471536) internal successors, (5043), 3959 states have internal predecessors, (5043), 759 states have call successors, (759), 383 states have call predecessors, (759), 383 states have return successors, (759), 655 states have call predecessors, (759), 759 states have call successors, (759) [2024-11-23 18:31:14,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4990 states to 4990 states and 6561 transitions. [2024-11-23 18:31:14,296 INFO L78 Accepts]: Start accepts. Automaton has 4990 states and 6561 transitions. Word has length 299 [2024-11-23 18:31:14,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:31:14,296 INFO L471 AbstractCegarLoop]: Abstraction has 4990 states and 6561 transitions. [2024-11-23 18:31:14,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 5 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-23 18:31:14,297 INFO L276 IsEmpty]: Start isEmpty. Operand 4990 states and 6561 transitions. [2024-11-23 18:31:14,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2024-11-23 18:31:14,300 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:31:14,300 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:31:14,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-23 18:31:14,301 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:31:14,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:31:14,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1313275818, now seen corresponding path program 1 times [2024-11-23 18:31:14,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:31:14,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319054407] [2024-11-23 18:31:14,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:14,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:31:14,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:14,818 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 771 trivial. 0 not checked. [2024-11-23 18:31:14,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:31:14,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319054407] [2024-11-23 18:31:14,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319054407] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:31:14,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:31:14,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:31:14,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642579530] [2024-11-23 18:31:14,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:31:14,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:31:14,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:31:14,820 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:31:14,820 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:31:14,820 INFO L87 Difference]: Start difference. First operand 4990 states and 6561 transitions. Second operand has 5 states, 4 states have (on average 24.75) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-23 18:31:15,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:31:15,097 INFO L93 Difference]: Finished difference Result 9319 states and 12307 transitions. [2024-11-23 18:31:15,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:31:15,098 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 24.75) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 299 [2024-11-23 18:31:15,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:31:15,125 INFO L225 Difference]: With dead ends: 9319 [2024-11-23 18:31:15,125 INFO L226 Difference]: Without dead ends: 4912 [2024-11-23 18:31:15,134 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:31:15,135 INFO L435 NwaCegarLoop]: 247 mSDtfsCounter, 0 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:31:15,135 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 969 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:31:15,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4912 states. [2024-11-23 18:31:15,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4912 to 4912. [2024-11-23 18:31:15,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4912 states, 3782 states have (on average 1.3088313061872026) internal successors, (4950), 3887 states have internal predecessors, (4950), 753 states have call successors, (753), 377 states have call predecessors, (753), 376 states have return successors, (752), 654 states have call predecessors, (752), 752 states have call successors, (752) [2024-11-23 18:31:15,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4912 states to 4912 states and 6455 transitions. [2024-11-23 18:31:15,646 INFO L78 Accepts]: Start accepts. Automaton has 4912 states and 6455 transitions. Word has length 299 [2024-11-23 18:31:15,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:31:15,647 INFO L471 AbstractCegarLoop]: Abstraction has 4912 states and 6455 transitions. [2024-11-23 18:31:15,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 24.75) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-23 18:31:15,648 INFO L276 IsEmpty]: Start isEmpty. Operand 4912 states and 6455 transitions. [2024-11-23 18:31:15,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-11-23 18:31:15,653 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:31:15,653 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:31:15,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-23 18:31:15,654 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:31:15,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:31:15,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1149611780, now seen corresponding path program 1 times [2024-11-23 18:31:15,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:31:15,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930919557] [2024-11-23 18:31:15,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:15,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:31:15,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:16,088 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2024-11-23 18:31:16,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:31:16,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930919557] [2024-11-23 18:31:16,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930919557] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:31:16,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161341686] [2024-11-23 18:31:16,088 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:16,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:31:16,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:31:16,091 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:31:16,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-23 18:31:16,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:16,417 INFO L256 TraceCheckSpWp]: Trace formula consists of 1048 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-23 18:31:16,424 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:31:16,694 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 189 proven. 4 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2024-11-23 18:31:16,694 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:31:16,947 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2024-11-23 18:31:16,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161341686] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 18:31:16,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-23 18:31:16,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8, 10] total 17 [2024-11-23 18:31:16,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135059607] [2024-11-23 18:31:16,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:31:16,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 18:31:16,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:31:16,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 18:31:16,952 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2024-11-23 18:31:16,952 INFO L87 Difference]: Start difference. First operand 4912 states and 6455 transitions. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 9 states have internal predecessors, (98), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-23 18:31:18,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:31:18,480 INFO L93 Difference]: Finished difference Result 14958 states and 19509 transitions. [2024-11-23 18:31:18,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-23 18:31:18,485 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 9 states have internal predecessors, (98), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) Word has length 304 [2024-11-23 18:31:18,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:31:18,541 INFO L225 Difference]: With dead ends: 14958 [2024-11-23 18:31:18,541 INFO L226 Difference]: Without dead ends: 10566 [2024-11-23 18:31:18,555 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 632 GetRequests, 601 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=876, Unknown=0, NotChecked=0, Total=992 [2024-11-23 18:31:18,556 INFO L435 NwaCegarLoop]: 376 mSDtfsCounter, 667 mSDsluCounter, 2359 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 2735 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-23 18:31:18,556 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 2735 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-23 18:31:18,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10566 states. [2024-11-23 18:31:19,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10566 to 6766. [2024-11-23 18:31:19,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6766 states, 5182 states have (on average 1.306445387881127) internal successors, (6770), 5332 states have internal predecessors, (6770), 1066 states have call successors, (1066), 518 states have call predecessors, (1066), 517 states have return successors, (1065), 922 states have call predecessors, (1065), 1065 states have call successors, (1065) [2024-11-23 18:31:19,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6766 states to 6766 states and 8901 transitions. [2024-11-23 18:31:19,151 INFO L78 Accepts]: Start accepts. Automaton has 6766 states and 8901 transitions. Word has length 304 [2024-11-23 18:31:19,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:31:19,152 INFO L471 AbstractCegarLoop]: Abstraction has 6766 states and 8901 transitions. [2024-11-23 18:31:19,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 9 states have internal predecessors, (98), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-23 18:31:19,152 INFO L276 IsEmpty]: Start isEmpty. Operand 6766 states and 8901 transitions. [2024-11-23 18:31:19,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-11-23 18:31:19,156 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:31:19,156 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:31:19,168 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-23 18:31:19,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-23 18:31:19,361 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:31:19,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:31:19,361 INFO L85 PathProgramCache]: Analyzing trace with hash -474278660, now seen corresponding path program 1 times [2024-11-23 18:31:19,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:31:19,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387916669] [2024-11-23 18:31:19,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:19,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:31:19,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:20,875 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2024-11-23 18:31:20,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:31:20,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387916669] [2024-11-23 18:31:20,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387916669] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:31:20,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181014701] [2024-11-23 18:31:20,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:20,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:31:20,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:31:20,878 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:31:20,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-23 18:31:21,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:21,181 INFO L256 TraceCheckSpWp]: Trace formula consists of 1048 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-23 18:31:21,189 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:31:21,292 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2024-11-23 18:31:21,292 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:31:21,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181014701] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:31:21,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:31:21,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 12 [2024-11-23 18:31:21,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53222075] [2024-11-23 18:31:21,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:31:21,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 18:31:21,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:31:21,294 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 18:31:21,294 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-23 18:31:21,294 INFO L87 Difference]: Start difference. First operand 6766 states and 8901 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 3 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-23 18:31:22,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:31:22,239 INFO L93 Difference]: Finished difference Result 13102 states and 17221 transitions. [2024-11-23 18:31:22,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 18:31:22,240 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 3 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) Word has length 304 [2024-11-23 18:31:22,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:31:22,288 INFO L225 Difference]: With dead ends: 13102 [2024-11-23 18:31:22,288 INFO L226 Difference]: Without dead ends: 6808 [2024-11-23 18:31:22,305 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-11-23 18:31:22,306 INFO L435 NwaCegarLoop]: 322 mSDtfsCounter, 122 mSDsluCounter, 1387 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 1709 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 18:31:22,306 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 1709 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 18:31:22,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6808 states. [2024-11-23 18:31:22,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6808 to 6566. [2024-11-23 18:31:22,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6566 states, 5030 states have (on average 1.2982107355864811) internal successors, (6530), 5176 states have internal predecessors, (6530), 1022 states have call successors, (1022), 514 states have call predecessors, (1022), 513 states have return successors, (1021), 882 states have call predecessors, (1021), 1021 states have call successors, (1021) [2024-11-23 18:31:22,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6566 states to 6566 states and 8573 transitions. [2024-11-23 18:31:22,989 INFO L78 Accepts]: Start accepts. Automaton has 6566 states and 8573 transitions. Word has length 304 [2024-11-23 18:31:22,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:31:22,989 INFO L471 AbstractCegarLoop]: Abstraction has 6566 states and 8573 transitions. [2024-11-23 18:31:22,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 3 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-23 18:31:22,990 INFO L276 IsEmpty]: Start isEmpty. Operand 6566 states and 8573 transitions. [2024-11-23 18:31:22,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2024-11-23 18:31:22,993 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:31:22,993 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:31:23,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-23 18:31:23,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-23 18:31:23,198 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:31:23,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:31:23,198 INFO L85 PathProgramCache]: Analyzing trace with hash 862609092, now seen corresponding path program 1 times [2024-11-23 18:31:23,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:31:23,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789657039] [2024-11-23 18:31:23,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:23,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:31:23,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:23,394 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked. [2024-11-23 18:31:23,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:31:23,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789657039] [2024-11-23 18:31:23,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789657039] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:31:23,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:31:23,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 18:31:23,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797038067] [2024-11-23 18:31:23,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:31:23,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:31:23,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:31:23,395 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:31:23,395 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:31:23,395 INFO L87 Difference]: Start difference. First operand 6566 states and 8573 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 18:31:24,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:31:24,175 INFO L93 Difference]: Finished difference Result 11928 states and 15607 transitions. [2024-11-23 18:31:24,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:31:24,176 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 311 [2024-11-23 18:31:24,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:31:24,209 INFO L225 Difference]: With dead ends: 11928 [2024-11-23 18:31:24,209 INFO L226 Difference]: Without dead ends: 6130 [2024-11-23 18:31:24,221 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:31:24,222 INFO L435 NwaCegarLoop]: 376 mSDtfsCounter, 432 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 18:31:24,222 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 886 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 18:31:24,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6130 states. [2024-11-23 18:31:24,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6130 to 5876. [2024-11-23 18:31:24,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5876 states, 4509 states have (on average 1.2789975604346862) internal successors, (5767), 4633 states have internal predecessors, (5767), 907 states have call successors, (907), 459 states have call predecessors, (907), 459 states have return successors, (907), 783 states have call predecessors, (907), 907 states have call successors, (907) [2024-11-23 18:31:24,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5876 states to 5876 states and 7581 transitions. [2024-11-23 18:31:24,678 INFO L78 Accepts]: Start accepts. Automaton has 5876 states and 7581 transitions. Word has length 311 [2024-11-23 18:31:24,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:31:24,679 INFO L471 AbstractCegarLoop]: Abstraction has 5876 states and 7581 transitions. [2024-11-23 18:31:24,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 18:31:24,679 INFO L276 IsEmpty]: Start isEmpty. Operand 5876 states and 7581 transitions. [2024-11-23 18:31:24,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2024-11-23 18:31:24,693 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:31:24,693 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:31:24,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-23 18:31:24,693 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:31:24,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:31:24,694 INFO L85 PathProgramCache]: Analyzing trace with hash 365093765, now seen corresponding path program 1 times [2024-11-23 18:31:24,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:31:24,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982011513] [2024-11-23 18:31:24,694 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:24,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:31:24,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:26,126 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 16 proven. 26 refuted. 0 times theorem prover too weak. 873 trivial. 0 not checked. [2024-11-23 18:31:26,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:31:26,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982011513] [2024-11-23 18:31:26,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982011513] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:31:26,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340036181] [2024-11-23 18:31:26,127 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:26,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:31:26,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:31:26,129 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:31:26,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-23 18:31:26,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:26,490 INFO L256 TraceCheckSpWp]: Trace formula consists of 1339 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-23 18:31:26,499 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:31:27,765 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 211 proven. 122 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2024-11-23 18:31:27,765 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:31:28,720 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 14 proven. 28 refuted. 0 times theorem prover too weak. 873 trivial. 0 not checked. [2024-11-23 18:31:28,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340036181] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:31:28,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:31:28,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 18] total 34 [2024-11-23 18:31:28,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269016623] [2024-11-23 18:31:28,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:31:28,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-23 18:31:28,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:31:28,723 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-23 18:31:28,724 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=997, Unknown=0, NotChecked=0, Total=1122 [2024-11-23 18:31:28,724 INFO L87 Difference]: Start difference. First operand 5876 states and 7581 transitions. Second operand has 34 states, 33 states have (on average 8.363636363636363) internal successors, (276), 31 states have internal predecessors, (276), 16 states have call successors, (62), 8 states have call predecessors, (62), 10 states have return successors, (61), 17 states have call predecessors, (61), 15 states have call successors, (61) [2024-11-23 18:31:47,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:31:47,965 INFO L93 Difference]: Finished difference Result 45065 states and 61620 transitions. [2024-11-23 18:31:47,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 282 states. [2024-11-23 18:31:47,965 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 8.363636363636363) internal successors, (276), 31 states have internal predecessors, (276), 16 states have call successors, (62), 8 states have call predecessors, (62), 10 states have return successors, (61), 17 states have call predecessors, (61), 15 states have call successors, (61) Word has length 359 [2024-11-23 18:31:47,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:31:48,146 INFO L225 Difference]: With dead ends: 45065 [2024-11-23 18:31:48,146 INFO L226 Difference]: Without dead ends: 39965 [2024-11-23 18:31:48,184 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1045 GetRequests, 736 SyntacticMatches, 1 SemanticMatches, 308 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41229 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=7076, Invalid=88714, Unknown=0, NotChecked=0, Total=95790 [2024-11-23 18:31:48,185 INFO L435 NwaCegarLoop]: 959 mSDtfsCounter, 6343 mSDsluCounter, 15819 mSDsCounter, 0 mSdLazyCounter, 9773 mSolverCounterSat, 1897 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6351 SdHoareTripleChecker+Valid, 16778 SdHoareTripleChecker+Invalid, 11670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1897 IncrementalHoareTripleChecker+Valid, 9773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2024-11-23 18:31:48,185 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6351 Valid, 16778 Invalid, 11670 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1897 Valid, 9773 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2024-11-23 18:31:48,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39965 states. [2024-11-23 18:31:49,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39965 to 7664. [2024-11-23 18:31:49,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7664 states, 5912 states have (on average 1.2640392422192153) internal successors, (7473), 6158 states have internal predecessors, (7473), 1138 states have call successors, (1138), 613 states have call predecessors, (1138), 613 states have return successors, (1138), 892 states have call predecessors, (1138), 1138 states have call successors, (1138) [2024-11-23 18:31:49,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7664 states to 7664 states and 9749 transitions. [2024-11-23 18:31:49,777 INFO L78 Accepts]: Start accepts. Automaton has 7664 states and 9749 transitions. Word has length 359 [2024-11-23 18:31:49,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:31:49,777 INFO L471 AbstractCegarLoop]: Abstraction has 7664 states and 9749 transitions. [2024-11-23 18:31:49,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 8.363636363636363) internal successors, (276), 31 states have internal predecessors, (276), 16 states have call successors, (62), 8 states have call predecessors, (62), 10 states have return successors, (61), 17 states have call predecessors, (61), 15 states have call successors, (61) [2024-11-23 18:31:49,778 INFO L276 IsEmpty]: Start isEmpty. Operand 7664 states and 9749 transitions. [2024-11-23 18:31:49,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2024-11-23 18:31:49,793 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:31:49,793 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:31:49,805 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-23 18:31:49,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-23 18:31:49,997 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:31:49,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:31:49,998 INFO L85 PathProgramCache]: Analyzing trace with hash -668124549, now seen corresponding path program 1 times [2024-11-23 18:31:49,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:31:49,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766809524] [2024-11-23 18:31:49,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:49,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:31:50,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:52,142 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 16 proven. 23 refuted. 0 times theorem prover too weak. 873 trivial. 0 not checked. [2024-11-23 18:31:52,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:31:52,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766809524] [2024-11-23 18:31:52,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766809524] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:31:52,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307520739] [2024-11-23 18:31:52,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:52,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:31:52,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:31:52,145 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:31:52,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-23 18:31:52,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:52,552 INFO L256 TraceCheckSpWp]: Trace formula consists of 1340 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-23 18:31:52,560 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:31:53,789 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 211 proven. 120 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2024-11-23 18:31:53,790 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:31:54,590 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 14 proven. 25 refuted. 0 times theorem prover too weak. 873 trivial. 0 not checked. [2024-11-23 18:31:54,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307520739] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:31:54,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:31:54,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 18] total 39 [2024-11-23 18:31:54,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292820693] [2024-11-23 18:31:54,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:31:54,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-23 18:31:54,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:31:54,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-23 18:31:54,593 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1336, Unknown=0, NotChecked=0, Total=1482 [2024-11-23 18:31:54,594 INFO L87 Difference]: Start difference. First operand 7664 states and 9749 transitions. Second operand has 39 states, 38 states have (on average 8.157894736842104) internal successors, (310), 36 states have internal predecessors, (310), 20 states have call successors, (74), 8 states have call predecessors, (74), 10 states have return successors, (73), 21 states have call predecessors, (73), 19 states have call successors, (73) [2024-11-23 18:32:26,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:26,613 INFO L93 Difference]: Finished difference Result 63278 states and 85642 transitions. [2024-11-23 18:32:26,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 293 states. [2024-11-23 18:32:26,613 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 8.157894736842104) internal successors, (310), 36 states have internal predecessors, (310), 20 states have call successors, (74), 8 states have call predecessors, (74), 10 states have return successors, (73), 21 states have call predecessors, (73), 19 states have call successors, (73) Word has length 360 [2024-11-23 18:32:26,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:26,856 INFO L225 Difference]: With dead ends: 63278 [2024-11-23 18:32:26,857 INFO L226 Difference]: Without dead ends: 56498 [2024-11-23 18:32:26,891 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1061 GetRequests, 736 SyntacticMatches, 0 SemanticMatches, 325 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46124 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=9348, Invalid=97254, Unknown=0, NotChecked=0, Total=106602 [2024-11-23 18:32:26,891 INFO L435 NwaCegarLoop]: 993 mSDtfsCounter, 8030 mSDsluCounter, 18247 mSDsCounter, 0 mSdLazyCounter, 12168 mSolverCounterSat, 2532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8030 SdHoareTripleChecker+Valid, 19240 SdHoareTripleChecker+Invalid, 14700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2532 IncrementalHoareTripleChecker+Valid, 12168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:26,891 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8030 Valid, 19240 Invalid, 14700 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2532 Valid, 12168 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2024-11-23 18:32:26,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56498 states. [2024-11-23 18:32:29,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56498 to 8690. [2024-11-23 18:32:29,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8690 states, 6798 states have (on average 1.2655192703736393) internal successors, (8603), 7114 states have internal predecessors, (8603), 1215 states have call successors, (1215), 676 states have call predecessors, (1215), 676 states have return successors, (1215), 899 states have call predecessors, (1215), 1215 states have call successors, (1215) [2024-11-23 18:32:29,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8690 states to 8690 states and 11033 transitions. [2024-11-23 18:32:29,648 INFO L78 Accepts]: Start accepts. Automaton has 8690 states and 11033 transitions. Word has length 360 [2024-11-23 18:32:29,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:29,649 INFO L471 AbstractCegarLoop]: Abstraction has 8690 states and 11033 transitions. [2024-11-23 18:32:29,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 8.157894736842104) internal successors, (310), 36 states have internal predecessors, (310), 20 states have call successors, (74), 8 states have call predecessors, (74), 10 states have return successors, (73), 21 states have call predecessors, (73), 19 states have call successors, (73) [2024-11-23 18:32:29,650 INFO L276 IsEmpty]: Start isEmpty. Operand 8690 states and 11033 transitions. [2024-11-23 18:32:29,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2024-11-23 18:32:29,669 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:29,669 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:32:29,681 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-23 18:32:29,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2024-11-23 18:32:29,870 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:29,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:29,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1385929050, now seen corresponding path program 1 times [2024-11-23 18:32:29,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:29,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127547280] [2024-11-23 18:32:29,871 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:29,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:30,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:31,935 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 33 proven. 69 refuted. 0 times theorem prover too weak. 810 trivial. 0 not checked. [2024-11-23 18:32:31,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:31,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127547280] [2024-11-23 18:32:31,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127547280] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:32:31,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424285832] [2024-11-23 18:32:31,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:31,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:32:31,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:32:31,940 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:32:31,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-23 18:32:32,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:32,279 INFO L256 TraceCheckSpWp]: Trace formula consists of 1341 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-23 18:32:32,286 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:32:32,802 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 206 proven. 121 refuted. 0 times theorem prover too weak. 585 trivial. 0 not checked. [2024-11-23 18:32:32,802 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:32:33,706 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 36 proven. 78 refuted. 0 times theorem prover too weak. 798 trivial. 0 not checked. [2024-11-23 18:32:33,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424285832] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:32:33,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:32:33,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18, 16] total 39 [2024-11-23 18:32:33,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408134423] [2024-11-23 18:32:33,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:32:33,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-23 18:32:33,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:33,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-23 18:32:33,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1310, Unknown=0, NotChecked=0, Total=1482 [2024-11-23 18:32:33,708 INFO L87 Difference]: Start difference. First operand 8690 states and 11033 transitions. Second operand has 39 states, 35 states have (on average 7.142857142857143) internal successors, (250), 33 states have internal predecessors, (250), 11 states have call successors, (54), 8 states have call predecessors, (54), 18 states have return successors, (58), 12 states have call predecessors, (58), 10 states have call successors, (58) [2024-11-23 18:32:45,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:45,276 INFO L93 Difference]: Finished difference Result 37277 states and 48245 transitions. [2024-11-23 18:32:45,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-23 18:32:45,277 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 35 states have (on average 7.142857142857143) internal successors, (250), 33 states have internal predecessors, (250), 11 states have call successors, (54), 8 states have call predecessors, (54), 18 states have return successors, (58), 12 states have call predecessors, (58), 10 states have call successors, (58) Word has length 361 [2024-11-23 18:32:45,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:45,390 INFO L225 Difference]: With dead ends: 37277 [2024-11-23 18:32:45,390 INFO L226 Difference]: Without dead ends: 29127 [2024-11-23 18:32:45,408 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 809 GetRequests, 710 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2482 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1571, Invalid=8529, Unknown=0, NotChecked=0, Total=10100 [2024-11-23 18:32:45,410 INFO L435 NwaCegarLoop]: 613 mSDtfsCounter, 1911 mSDsluCounter, 7997 mSDsCounter, 0 mSdLazyCounter, 6191 mSolverCounterSat, 789 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1911 SdHoareTripleChecker+Valid, 8610 SdHoareTripleChecker+Invalid, 6980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 789 IncrementalHoareTripleChecker+Valid, 6191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:45,410 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1911 Valid, 8610 Invalid, 6980 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [789 Valid, 6191 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-23 18:32:45,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29127 states. [2024-11-23 18:32:49,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29127 to 17760. [2024-11-23 18:32:49,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17760 states, 13922 states have (on average 1.2668438442752479) internal successors, (17637), 14553 states have internal predecessors, (17637), 2501 states have call successors, (2501), 1328 states have call predecessors, (2501), 1336 states have return successors, (2517), 1878 states have call predecessors, (2517), 2501 states have call successors, (2517) [2024-11-23 18:32:49,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17760 states to 17760 states and 22655 transitions. [2024-11-23 18:32:49,697 INFO L78 Accepts]: Start accepts. Automaton has 17760 states and 22655 transitions. Word has length 361 [2024-11-23 18:32:49,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:49,698 INFO L471 AbstractCegarLoop]: Abstraction has 17760 states and 22655 transitions. [2024-11-23 18:32:49,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 35 states have (on average 7.142857142857143) internal successors, (250), 33 states have internal predecessors, (250), 11 states have call successors, (54), 8 states have call predecessors, (54), 18 states have return successors, (58), 12 states have call predecessors, (58), 10 states have call successors, (58) [2024-11-23 18:32:49,698 INFO L276 IsEmpty]: Start isEmpty. Operand 17760 states and 22655 transitions. [2024-11-23 18:32:49,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2024-11-23 18:32:49,725 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:49,726 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:32:49,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-23 18:32:49,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:32:49,926 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:49,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:49,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1189415545, now seen corresponding path program 1 times [2024-11-23 18:32:49,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:49,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896204228] [2024-11-23 18:32:49,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:49,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:49,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:50,181 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 868 trivial. 0 not checked. [2024-11-23 18:32:50,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:50,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896204228] [2024-11-23 18:32:50,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896204228] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:32:50,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:32:50,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 18:32:50,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083045922] [2024-11-23 18:32:50,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:32:50,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:32:50,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:50,183 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:32:50,183 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:32:50,183 INFO L87 Difference]: Start difference. First operand 17760 states and 22655 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-23 18:32:53,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:53,748 INFO L93 Difference]: Finished difference Result 36009 states and 45841 transitions. [2024-11-23 18:32:53,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:32:53,749 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 361 [2024-11-23 18:32:53,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:53,822 INFO L225 Difference]: With dead ends: 36009 [2024-11-23 18:32:53,823 INFO L226 Difference]: Without dead ends: 17728 [2024-11-23 18:32:53,854 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:32:53,854 INFO L435 NwaCegarLoop]: 231 mSDtfsCounter, 26 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:53,855 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 670 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:32:53,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17728 states. [2024-11-23 18:32:57,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17728 to 17728. [2024-11-23 18:32:57,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17728 states, 13898 states have (on average 1.247517628435746) internal successors, (17338), 14529 states have internal predecessors, (17338), 2501 states have call successors, (2501), 1328 states have call predecessors, (2501), 1328 states have return successors, (2501), 1870 states have call predecessors, (2501), 2501 states have call successors, (2501) [2024-11-23 18:32:57,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17728 states to 17728 states and 22340 transitions. [2024-11-23 18:32:57,495 INFO L78 Accepts]: Start accepts. Automaton has 17728 states and 22340 transitions. Word has length 361 [2024-11-23 18:32:57,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:57,496 INFO L471 AbstractCegarLoop]: Abstraction has 17728 states and 22340 transitions. [2024-11-23 18:32:57,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-23 18:32:57,496 INFO L276 IsEmpty]: Start isEmpty. Operand 17728 states and 22340 transitions. [2024-11-23 18:32:57,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2024-11-23 18:32:57,525 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:57,525 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:32:57,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-11-23 18:32:57,526 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:57,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:57,526 INFO L85 PathProgramCache]: Analyzing trace with hash 962227870, now seen corresponding path program 1 times [2024-11-23 18:32:57,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:57,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190816879] [2024-11-23 18:32:57,527 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:57,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:57,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:59,864 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 49 proven. 193 refuted. 0 times theorem prover too weak. 673 trivial. 0 not checked. [2024-11-23 18:32:59,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:59,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190816879] [2024-11-23 18:32:59,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190816879] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:32:59,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989492224] [2024-11-23 18:32:59,865 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:59,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:32:59,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:32:59,866 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:32:59,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-23 18:33:00,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:33:00,217 INFO L256 TraceCheckSpWp]: Trace formula consists of 1340 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-23 18:33:00,224 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:33:00,621 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 142 proven. 3 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2024-11-23 18:33:00,622 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:33:01,221 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 49 proven. 2 refuted. 0 times theorem prover too weak. 864 trivial. 0 not checked. [2024-11-23 18:33:01,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989492224] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:33:01,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:33:01,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 13] total 38 [2024-11-23 18:33:01,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597641952] [2024-11-23 18:33:01,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:33:01,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-23 18:33:01,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:33:01,224 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-23 18:33:01,224 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1302, Unknown=0, NotChecked=0, Total=1406 [2024-11-23 18:33:01,224 INFO L87 Difference]: Start difference. First operand 17728 states and 22340 transitions. Second operand has 38 states, 34 states have (on average 6.294117647058823) internal successors, (214), 31 states have internal predecessors, (214), 12 states have call successors, (52), 6 states have call predecessors, (52), 11 states have return successors, (52), 13 states have call predecessors, (52), 11 states have call successors, (52) [2024-11-23 18:33:13,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:33:13,324 INFO L93 Difference]: Finished difference Result 51205 states and 67038 transitions. [2024-11-23 18:33:13,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-11-23 18:33:13,324 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 34 states have (on average 6.294117647058823) internal successors, (214), 31 states have internal predecessors, (214), 12 states have call successors, (52), 6 states have call predecessors, (52), 11 states have return successors, (52), 13 states have call predecessors, (52), 11 states have call successors, (52) Word has length 361 [2024-11-23 18:33:13,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:33:13,596 INFO L225 Difference]: With dead ends: 51205 [2024-11-23 18:33:13,596 INFO L226 Difference]: Without dead ends: 34379 [2024-11-23 18:33:13,635 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 819 GetRequests, 721 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2478 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=808, Invalid=9092, Unknown=0, NotChecked=0, Total=9900 [2024-11-23 18:33:13,635 INFO L435 NwaCegarLoop]: 275 mSDtfsCounter, 1808 mSDsluCounter, 5945 mSDsCounter, 0 mSdLazyCounter, 5057 mSolverCounterSat, 794 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1816 SdHoareTripleChecker+Valid, 6220 SdHoareTripleChecker+Invalid, 5851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 794 IncrementalHoareTripleChecker+Valid, 5057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-23 18:33:13,636 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1816 Valid, 6220 Invalid, 5851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [794 Valid, 5057 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-23 18:33:13,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34379 states. [2024-11-23 18:33:18,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34379 to 20437. [2024-11-23 18:33:18,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20437 states, 15919 states have (on average 1.234688108549532) internal successors, (19655), 16633 states have internal predecessors, (19655), 2952 states have call successors, (2952), 1563 states have call predecessors, (2952), 1565 states have return successors, (2956), 2240 states have call predecessors, (2956), 2952 states have call successors, (2956) [2024-11-23 18:33:18,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20437 states to 20437 states and 25563 transitions. [2024-11-23 18:33:18,761 INFO L78 Accepts]: Start accepts. Automaton has 20437 states and 25563 transitions. Word has length 361 [2024-11-23 18:33:18,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:33:18,762 INFO L471 AbstractCegarLoop]: Abstraction has 20437 states and 25563 transitions. [2024-11-23 18:33:18,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 34 states have (on average 6.294117647058823) internal successors, (214), 31 states have internal predecessors, (214), 12 states have call successors, (52), 6 states have call predecessors, (52), 11 states have return successors, (52), 13 states have call predecessors, (52), 11 states have call successors, (52) [2024-11-23 18:33:18,762 INFO L276 IsEmpty]: Start isEmpty. Operand 20437 states and 25563 transitions. [2024-11-23 18:33:18,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2024-11-23 18:33:18,798 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:33:18,798 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:33:18,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-23 18:33:18,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-11-23 18:33:18,999 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:33:18,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:33:18,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1238706827, now seen corresponding path program 1 times [2024-11-23 18:33:18,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:33:18,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621562277] [2024-11-23 18:33:19,000 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:33:19,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:33:19,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:33:19,114 INFO L134 CoverageAnalysis]: Checked inductivity of 981 backedges. 9 proven. 136 refuted. 0 times theorem prover too weak. 836 trivial. 0 not checked. [2024-11-23 18:33:19,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:33:19,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621562277] [2024-11-23 18:33:19,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621562277] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:33:19,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555088487] [2024-11-23 18:33:19,114 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:33:19,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:33:19,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:33:19,116 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:33:19,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-23 18:33:19,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:33:19,466 INFO L256 TraceCheckSpWp]: Trace formula consists of 1365 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 18:33:19,472 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:33:19,491 INFO L134 CoverageAnalysis]: Checked inductivity of 981 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 892 trivial. 0 not checked. [2024-11-23 18:33:19,491 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:33:19,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555088487] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:33:19,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:33:19,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-23 18:33:19,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846514168] [2024-11-23 18:33:19,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:33:19,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:33:19,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:33:19,493 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:33:19,493 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:33:19,493 INFO L87 Difference]: Start difference. First operand 20437 states and 25563 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-23 18:33:23,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:33:23,682 INFO L93 Difference]: Finished difference Result 40090 states and 50220 transitions. [2024-11-23 18:33:23,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:33:23,683 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) Word has length 374 [2024-11-23 18:33:23,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:33:23,736 INFO L225 Difference]: With dead ends: 40090 [2024-11-23 18:33:23,736 INFO L226 Difference]: Without dead ends: 19654 [2024-11-23 18:33:23,765 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:33:23,765 INFO L435 NwaCegarLoop]: 235 mSDtfsCounter, 18 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:33:23,766 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 669 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:33:23,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19654 states. [2024-11-23 18:33:27,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19654 to 19418. [2024-11-23 18:33:27,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19418 states, 15119 states have (on average 1.238177128116939) internal successors, (18720), 15802 states have internal predecessors, (18720), 2821 states have call successors, (2821), 1477 states have call predecessors, (2821), 1477 states have return successors, (2821), 2138 states have call predecessors, (2821), 2821 states have call successors, (2821) [2024-11-23 18:33:27,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19418 states to 19418 states and 24362 transitions. [2024-11-23 18:33:27,771 INFO L78 Accepts]: Start accepts. Automaton has 19418 states and 24362 transitions. Word has length 374 [2024-11-23 18:33:27,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:33:27,772 INFO L471 AbstractCegarLoop]: Abstraction has 19418 states and 24362 transitions. [2024-11-23 18:33:27,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-23 18:33:27,772 INFO L276 IsEmpty]: Start isEmpty. Operand 19418 states and 24362 transitions. [2024-11-23 18:33:27,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2024-11-23 18:33:27,801 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:33:27,802 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 12, 12, 9, 8, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:33:27,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-23 18:33:28,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-11-23 18:33:28,003 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:33:28,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:33:28,003 INFO L85 PathProgramCache]: Analyzing trace with hash 557378052, now seen corresponding path program 1 times [2024-11-23 18:33:28,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:33:28,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314344634] [2024-11-23 18:33:28,003 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:33:28,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:33:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:33:29,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 58 proven. 52 refuted. 0 times theorem prover too weak. 923 trivial. 0 not checked. [2024-11-23 18:33:29,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:33:29,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314344634] [2024-11-23 18:33:29,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314344634] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:33:29,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094853491] [2024-11-23 18:33:29,706 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:33:29,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:33:29,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:33:29,710 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:33:29,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-23 18:33:30,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:33:30,041 INFO L256 TraceCheckSpWp]: Trace formula consists of 1390 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-23 18:33:30,048 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:33:30,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 319 proven. 122 refuted. 0 times theorem prover too weak. 592 trivial. 0 not checked. [2024-11-23 18:33:30,595 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:33:31,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 61 proven. 61 refuted. 0 times theorem prover too weak. 911 trivial. 0 not checked. [2024-11-23 18:33:31,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094853491] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:33:31,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:33:31,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 16] total 38 [2024-11-23 18:33:31,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056255094] [2024-11-23 18:33:31,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:33:31,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-23 18:33:31,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:33:31,543 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-23 18:33:31,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1242, Unknown=0, NotChecked=0, Total=1406 [2024-11-23 18:33:31,544 INFO L87 Difference]: Start difference. First operand 19418 states and 24362 transitions. Second operand has 38 states, 35 states have (on average 7.857142857142857) internal successors, (275), 32 states have internal predecessors, (275), 10 states have call successors, (62), 8 states have call predecessors, (62), 18 states have return successors, (65), 12 states have call predecessors, (65), 9 states have call successors, (65) [2024-11-23 18:33:52,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:33:52,642 INFO L93 Difference]: Finished difference Result 79915 states and 101816 transitions. [2024-11-23 18:33:52,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-11-23 18:33:52,642 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 35 states have (on average 7.857142857142857) internal successors, (275), 32 states have internal predecessors, (275), 10 states have call successors, (62), 8 states have call predecessors, (62), 18 states have return successors, (65), 12 states have call predecessors, (65), 9 states have call successors, (65) Word has length 381 [2024-11-23 18:33:52,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:33:52,801 INFO L225 Difference]: With dead ends: 79915 [2024-11-23 18:33:52,801 INFO L226 Difference]: Without dead ends: 61317 [2024-11-23 18:33:52,832 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 860 GetRequests, 764 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2301 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1533, Invalid=7973, Unknown=0, NotChecked=0, Total=9506 [2024-11-23 18:33:52,833 INFO L435 NwaCegarLoop]: 652 mSDtfsCounter, 1492 mSDsluCounter, 10180 mSDsCounter, 0 mSdLazyCounter, 6215 mSolverCounterSat, 569 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 10832 SdHoareTripleChecker+Invalid, 6784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 569 IncrementalHoareTripleChecker+Valid, 6215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:33:52,833 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1492 Valid, 10832 Invalid, 6784 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [569 Valid, 6215 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-23 18:33:52,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61317 states. [2024-11-23 18:34:03,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61317 to 38374. [2024-11-23 18:34:03,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38374 states, 29763 states have (on average 1.230857104458556) internal successors, (36634), 31032 states have internal predecessors, (36634), 5673 states have call successors, (5673), 2937 states have call predecessors, (5673), 2937 states have return successors, (5673), 4404 states have call predecessors, (5673), 5673 states have call successors, (5673) [2024-11-23 18:34:03,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38374 states to 38374 states and 47980 transitions. [2024-11-23 18:34:03,357 INFO L78 Accepts]: Start accepts. Automaton has 38374 states and 47980 transitions. Word has length 381 [2024-11-23 18:34:03,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:34:03,358 INFO L471 AbstractCegarLoop]: Abstraction has 38374 states and 47980 transitions. [2024-11-23 18:34:03,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 35 states have (on average 7.857142857142857) internal successors, (275), 32 states have internal predecessors, (275), 10 states have call successors, (62), 8 states have call predecessors, (62), 18 states have return successors, (65), 12 states have call predecessors, (65), 9 states have call successors, (65) [2024-11-23 18:34:03,358 INFO L276 IsEmpty]: Start isEmpty. Operand 38374 states and 47980 transitions. [2024-11-23 18:34:03,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2024-11-23 18:34:03,455 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:34:03,456 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 12, 12, 9, 8, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:34:03,470 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-23 18:34:03,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:34:03,656 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:34:03,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:34:03,657 INFO L85 PathProgramCache]: Analyzing trace with hash 618897192, now seen corresponding path program 1 times [2024-11-23 18:34:03,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:34:03,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027576335] [2024-11-23 18:34:03,657 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:34:03,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:34:03,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:34:05,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1039 backedges. 99 proven. 177 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2024-11-23 18:34:05,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:34:05,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027576335] [2024-11-23 18:34:05,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027576335] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:34:05,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519858704] [2024-11-23 18:34:05,603 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:34:05,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:34:05,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:34:05,606 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:34:05,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-23 18:34:05,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:34:05,951 INFO L256 TraceCheckSpWp]: Trace formula consists of 1390 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-23 18:34:05,956 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:34:06,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1039 backedges. 319 proven. 0 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2024-11-23 18:34:06,031 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:34:06,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519858704] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:34:06,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:34:06,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [18] total 21 [2024-11-23 18:34:06,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974655486] [2024-11-23 18:34:06,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:34:06,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:34:06,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:34:06,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:34:06,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2024-11-23 18:34:06,033 INFO L87 Difference]: Start difference. First operand 38374 states and 47980 transitions. Second operand has 5 states, 4 states have (on average 30.25) internal successors, (121), 5 states have internal predecessors, (121), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) [2024-11-23 18:34:12,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:34:12,524 INFO L93 Difference]: Finished difference Result 64129 states and 79982 transitions. [2024-11-23 18:34:12,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:34:12,525 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 30.25) internal successors, (121), 5 states have internal predecessors, (121), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) Word has length 381 [2024-11-23 18:34:12,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:34:12,610 INFO L225 Difference]: With dead ends: 64129 [2024-11-23 18:34:12,611 INFO L226 Difference]: Without dead ends: 26520 [2024-11-23 18:34:12,655 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2024-11-23 18:34:12,656 INFO L435 NwaCegarLoop]: 238 mSDtfsCounter, 0 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:34:12,656 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 931 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:34:12,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26520 states. [2024-11-23 18:34:18,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26520 to 24240. [2024-11-23 18:34:18,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24240 states, 18756 states have (on average 1.2146513115802944) internal successors, (22782), 19455 states have internal predecessors, (22782), 3568 states have call successors, (3568), 1915 states have call predecessors, (3568), 1915 states have return successors, (3568), 2869 states have call predecessors, (3568), 3568 states have call successors, (3568) [2024-11-23 18:34:18,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24240 states to 24240 states and 29918 transitions. [2024-11-23 18:34:18,492 INFO L78 Accepts]: Start accepts. Automaton has 24240 states and 29918 transitions. Word has length 381 [2024-11-23 18:34:18,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:34:18,492 INFO L471 AbstractCegarLoop]: Abstraction has 24240 states and 29918 transitions. [2024-11-23 18:34:18,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 30.25) internal successors, (121), 5 states have internal predecessors, (121), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) [2024-11-23 18:34:18,492 INFO L276 IsEmpty]: Start isEmpty. Operand 24240 states and 29918 transitions. [2024-11-23 18:34:18,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2024-11-23 18:34:18,520 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:34:18,520 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 12, 12, 9, 8, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:34:18,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-23 18:34:18,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:34:18,721 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:34:18,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:34:18,721 INFO L85 PathProgramCache]: Analyzing trace with hash -954052756, now seen corresponding path program 1 times [2024-11-23 18:34:18,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:34:18,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796468242] [2024-11-23 18:34:18,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:34:18,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:34:18,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:34:20,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 93 proven. 177 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2024-11-23 18:34:20,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:34:20,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796468242] [2024-11-23 18:34:20,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796468242] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:34:20,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813068988] [2024-11-23 18:34:20,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:34:20,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:34:20,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:34:20,455 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:34:20,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e3320b5-4ef6-45ab-9753-8a42eb67c944/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-23 18:34:20,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:34:20,788 INFO L256 TraceCheckSpWp]: Trace formula consists of 1390 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-23 18:34:20,792 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:34:20,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 337 proven. 86 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2024-11-23 18:34:20,930 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:34:21,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 1011 trivial. 0 not checked. [2024-11-23 18:34:21,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813068988] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:34:21,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:34:21,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 7, 9] total 27 [2024-11-23 18:34:21,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810505484] [2024-11-23 18:34:21,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:34:21,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-23 18:34:21,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:34:21,223 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-23 18:34:21,223 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=639, Unknown=0, NotChecked=0, Total=702 [2024-11-23 18:34:21,223 INFO L87 Difference]: Start difference. First operand 24240 states and 29918 transitions. Second operand has 27 states, 25 states have (on average 8.76) internal successors, (219), 24 states have internal predecessors, (219), 10 states have call successors, (54), 5 states have call predecessors, (54), 9 states have return successors, (53), 10 states have call predecessors, (53), 9 states have call successors, (53) [2024-11-23 18:34:30,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:34:30,838 INFO L93 Difference]: Finished difference Result 48520 states and 62299 transitions. [2024-11-23 18:34:30,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-23 18:34:30,839 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 8.76) internal successors, (219), 24 states have internal predecessors, (219), 10 states have call successors, (54), 5 states have call predecessors, (54), 9 states have return successors, (53), 10 states have call predecessors, (53), 9 states have call successors, (53) Word has length 382 [2024-11-23 18:34:30,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:34:30,916 INFO L225 Difference]: With dead ends: 48520 [2024-11-23 18:34:30,916 INFO L226 Difference]: Without dead ends: 24756 [2024-11-23 18:34:30,943 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 827 GetRequests, 766 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 885 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=403, Invalid=3503, Unknown=0, NotChecked=0, Total=3906 [2024-11-23 18:34:30,944 INFO L435 NwaCegarLoop]: 238 mSDtfsCounter, 1011 mSDsluCounter, 4255 mSDsCounter, 0 mSdLazyCounter, 3031 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1032 SdHoareTripleChecker+Valid, 4493 SdHoareTripleChecker+Invalid, 3419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 3031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:34:30,944 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1032 Valid, 4493 Invalid, 3419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 3031 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-23 18:34:30,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24756 states.