./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-64.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-64.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB --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 e3b150a17e2463cebe76496dbc2347bb2e3ca7c0b4d818609f62a20afc82666e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:26:27,349 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:26:27,411 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:26:27,417 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:26:27,417 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:26:27,449 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:26:27,450 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:26:27,451 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:26:27,452 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:26:27,452 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:26:27,452 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:26:27,452 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:26:27,453 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:26:27,453 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:26:27,454 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:26:27,454 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:26:27,455 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:26:27,455 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:26:27,456 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:26:27,456 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:26:27,456 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:26:27,456 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:26:27,456 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:26:27,456 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:26:27,456 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:26:27,456 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:26:27,457 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:26:27,457 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:26:27,457 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:26:27,457 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:26:27,457 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:26:27,457 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:26:27,457 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:26:27,457 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:26:27,458 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:26:27,458 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:26:27,458 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:26:27,458 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:26:27,458 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:26:27,458 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:26:27,458 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:26:27,458 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:26:27,458 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:26:27,458 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:26:27,458 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:26:27,458 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:26:27,460 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:26:27,460 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:26:27,460 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_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB 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 -> e3b150a17e2463cebe76496dbc2347bb2e3ca7c0b4d818609f62a20afc82666e [2024-11-28 04:26:27,769 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:26:27,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:26:27,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:26:27,781 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:26:27,782 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:26:27,783 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-64.i [2024-11-28 04:26:30,799 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/data/d140c20ac/f753a356e92b48d58c03b6c707e27567/FLAG108b95dc7 [2024-11-28 04:26:31,136 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:26:31,137 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-64.i [2024-11-28 04:26:31,151 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/data/d140c20ac/f753a356e92b48d58c03b6c707e27567/FLAG108b95dc7 [2024-11-28 04:26:31,166 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/data/d140c20ac/f753a356e92b48d58c03b6c707e27567 [2024-11-28 04:26:31,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:26:31,170 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:26:31,171 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:26:31,171 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:26:31,176 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:26:31,177 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:26:31" (1/1) ... [2024-11-28 04:26:31,178 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51e763b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:31, skipping insertion in model container [2024-11-28 04:26:31,178 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:26:31" (1/1) ... [2024-11-28 04:26:31,232 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:26:31,393 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_ce405203-b43f-4321-9cd5-8786070db6d6/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-64.i[916,929] [2024-11-28 04:26:31,680 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:26:31,700 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:26:31,710 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_ce405203-b43f-4321-9cd5-8786070db6d6/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-64.i[916,929] [2024-11-28 04:26:31,876 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:26:31,909 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:26:31,910 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:31 WrapperNode [2024-11-28 04:26:31,911 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:26:31,912 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:26:31,912 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:26:31,912 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:26:31,922 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:31" (1/1) ... [2024-11-28 04:26:31,968 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:31" (1/1) ... [2024-11-28 04:26:32,215 INFO L138 Inliner]: procedures = 26, calls = 78, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 703 [2024-11-28 04:26:32,216 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:26:32,218 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:26:32,218 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:26:32,218 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:26:32,228 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:31" (1/1) ... [2024-11-28 04:26:32,229 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:31" (1/1) ... [2024-11-28 04:26:32,256 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:31" (1/1) ... [2024-11-28 04:26:32,351 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]. [2024-11-28 04:26:32,351 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:31" (1/1) ... [2024-11-28 04:26:32,351 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:31" (1/1) ... [2024-11-28 04:26:32,402 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:31" (1/1) ... [2024-11-28 04:26:32,406 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:31" (1/1) ... [2024-11-28 04:26:32,421 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:31" (1/1) ... [2024-11-28 04:26:32,437 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:31" (1/1) ... [2024-11-28 04:26:32,446 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:31" (1/1) ... [2024-11-28 04:26:32,465 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:26:32,466 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:26:32,466 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:26:32,466 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:26:32,470 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:31" (1/1) ... [2024-11-28 04:26:32,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:26:32,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:26:32,504 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:26:32,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:26:32,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:26:32,541 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 04:26:32,541 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 04:26:32,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:26:32,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:26:32,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:26:32,704 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:26:32,706 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:26:34,563 INFO L? ?]: Removed 72 outVars from TransFormulas that were not future-live. [2024-11-28 04:26:34,563 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:26:34,592 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:26:34,592 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 04:26:34,592 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:26:34 BoogieIcfgContainer [2024-11-28 04:26:34,592 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:26:34,599 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:26:34,599 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:26:34,606 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:26:34,607 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:26:31" (1/3) ... [2024-11-28 04:26:34,609 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22565c17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:26:34, skipping insertion in model container [2024-11-28 04:26:34,609 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:31" (2/3) ... [2024-11-28 04:26:34,609 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22565c17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:26:34, skipping insertion in model container [2024-11-28 04:26:34,609 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:26:34" (3/3) ... [2024-11-28 04:26:34,610 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-64.i [2024-11-28 04:26:34,631 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:26:34,635 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount500_file-64.i that has 2 procedures, 275 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 04:26:34,721 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:26:34,734 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;@5cdfe2ce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:26:34,734 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:26:34,739 INFO L276 IsEmpty]: Start isEmpty. Operand has 275 states, 207 states have (on average 1.5797101449275361) internal successors, (327), 208 states have internal predecessors, (327), 65 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2024-11-28 04:26:34,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2024-11-28 04:26:34,768 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:26:34,769 INFO L218 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:34,769 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:26:34,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:34,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1076782971, now seen corresponding path program 1 times [2024-11-28 04:26:34,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:34,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612467817] [2024-11-28 04:26:34,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:34,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:35,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:35,763 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 8192 trivial. 0 not checked. [2024-11-28 04:26:35,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:35,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612467817] [2024-11-28 04:26:35,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612467817] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:26:35,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142489631] [2024-11-28 04:26:35,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:35,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:26:35,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:26:35,771 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:26:35,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:26:36,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:36,279 INFO L256 TraceCheckSpWp]: Trace formula consists of 1101 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 04:26:36,292 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:26:36,343 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 8192 trivial. 0 not checked. [2024-11-28 04:26:36,343 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:26:36,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142489631] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:36,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:26:36,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 04:26:36,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012622138] [2024-11-28 04:26:36,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:36,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:26:36,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:36,389 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:26:36,389 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:26:36,393 INFO L87 Difference]: Start difference. First operand has 275 states, 207 states have (on average 1.5797101449275361) internal successors, (327), 208 states have internal predecessors, (327), 65 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) Second operand has 2 states, 2 states have (on average 57.0) internal successors, (114), 2 states have internal predecessors, (114), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 2 states have call successors, (65) [2024-11-28 04:26:36,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:26:36,485 INFO L93 Difference]: Finished difference Result 541 states and 969 transitions. [2024-11-28 04:26:36,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:26:36,487 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 57.0) internal successors, (114), 2 states have internal predecessors, (114), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 2 states have call successors, (65) Word has length 434 [2024-11-28 04:26:36,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:26:36,496 INFO L225 Difference]: With dead ends: 541 [2024-11-28 04:26:36,496 INFO L226 Difference]: Without dead ends: 269 [2024-11-28 04:26:36,501 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 435 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:26:36,504 INFO L435 NwaCegarLoop]: 444 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:26:36,505 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:26:36,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2024-11-28 04:26:36,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2024-11-28 04:26:36,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 202 states have (on average 1.5544554455445545) internal successors, (314), 202 states have internal predecessors, (314), 65 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2024-11-28 04:26:36,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 444 transitions. [2024-11-28 04:26:36,612 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 444 transitions. Word has length 434 [2024-11-28 04:26:36,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:26:36,612 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 444 transitions. [2024-11-28 04:26:36,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 57.0) internal successors, (114), 2 states have internal predecessors, (114), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 2 states have call successors, (65) [2024-11-28 04:26:36,613 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 444 transitions. [2024-11-28 04:26:36,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2024-11-28 04:26:36,630 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:26:36,631 INFO L218 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:36,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:26:36,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 04:26:36,835 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:26:36,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:36,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1809940997, now seen corresponding path program 1 times [2024-11-28 04:26:36,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:36,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480150814] [2024-11-28 04:26:36,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:36,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:37,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:37,563 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-11-28 04:26:37,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:37,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480150814] [2024-11-28 04:26:37,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480150814] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:37,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:26:37,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:26:37,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623689347] [2024-11-28 04:26:37,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:37,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:26:37,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:37,567 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:26:37,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:26:37,567 INFO L87 Difference]: Start difference. First operand 269 states and 444 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-28 04:26:37,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:26:37,742 INFO L93 Difference]: Finished difference Result 739 states and 1223 transitions. [2024-11-28 04:26:37,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:26:37,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 434 [2024-11-28 04:26:37,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:26:37,749 INFO L225 Difference]: With dead ends: 739 [2024-11-28 04:26:37,749 INFO L226 Difference]: Without dead ends: 473 [2024-11-28 04:26:37,750 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 [2024-11-28 04:26:37,751 INFO L435 NwaCegarLoop]: 432 mSDtfsCounter, 326 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 853 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:26:37,751 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 853 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:26:37,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2024-11-28 04:26:37,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 470. [2024-11-28 04:26:37,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 376 states have (on average 1.5824468085106382) internal successors, (595), 377 states have internal predecessors, (595), 91 states have call successors, (91), 2 states have call predecessors, (91), 2 states have return successors, (91), 90 states have call predecessors, (91), 91 states have call successors, (91) [2024-11-28 04:26:37,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 777 transitions. [2024-11-28 04:26:37,831 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 777 transitions. Word has length 434 [2024-11-28 04:26:37,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:26:37,833 INFO L471 AbstractCegarLoop]: Abstraction has 470 states and 777 transitions. [2024-11-28 04:26:37,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-28 04:26:37,834 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 777 transitions. [2024-11-28 04:26:37,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2024-11-28 04:26:37,845 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:26:37,845 INFO L218 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:37,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:26:37,845 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:26:37,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:37,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1224109049, now seen corresponding path program 1 times [2024-11-28 04:26:37,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:37,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287879395] [2024-11-28 04:26:37,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:37,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:38,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:38,500 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-11-28 04:26:38,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:38,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287879395] [2024-11-28 04:26:38,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287879395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:38,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:26:38,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:26:38,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767974579] [2024-11-28 04:26:38,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:38,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:26:38,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:38,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:26:38,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:26:38,507 INFO L87 Difference]: Start difference. First operand 470 states and 777 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-28 04:26:38,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:26:38,741 INFO L93 Difference]: Finished difference Result 1354 states and 2246 transitions. [2024-11-28 04:26:38,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:26:38,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 434 [2024-11-28 04:26:38,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:26:38,755 INFO L225 Difference]: With dead ends: 1354 [2024-11-28 04:26:38,757 INFO L226 Difference]: Without dead ends: 887 [2024-11-28 04:26:38,759 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 [2024-11-28 04:26:38,760 INFO L435 NwaCegarLoop]: 647 mSDtfsCounter, 391 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:26:38,761 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 1075 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:26:38,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2024-11-28 04:26:38,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 532. [2024-11-28 04:26:38,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 438 states have (on average 1.6050228310502284) internal successors, (703), 439 states have internal predecessors, (703), 91 states have call successors, (91), 2 states have call predecessors, (91), 2 states have return successors, (91), 90 states have call predecessors, (91), 91 states have call successors, (91) [2024-11-28 04:26:38,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 885 transitions. [2024-11-28 04:26:38,865 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 885 transitions. Word has length 434 [2024-11-28 04:26:38,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:26:38,867 INFO L471 AbstractCegarLoop]: Abstraction has 532 states and 885 transitions. [2024-11-28 04:26:38,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-28 04:26:38,868 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 885 transitions. [2024-11-28 04:26:38,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2024-11-28 04:26:38,878 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:26:38,879 INFO L218 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:38,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:26:38,879 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:26:38,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:38,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1225491081, now seen corresponding path program 1 times [2024-11-28 04:26:38,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:38,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080413844] [2024-11-28 04:26:38,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:38,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:39,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:39,585 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-11-28 04:26:39,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:39,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080413844] [2024-11-28 04:26:39,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080413844] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:39,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:26:39,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:26:39,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100621845] [2024-11-28 04:26:39,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:39,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:26:39,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:39,592 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:26:39,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:26:39,593 INFO L87 Difference]: Start difference. First operand 532 states and 885 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-28 04:26:39,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:26:39,699 INFO L93 Difference]: Finished difference Result 1455 states and 2418 transitions. [2024-11-28 04:26:39,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:26:39,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 434 [2024-11-28 04:26:39,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:26:39,707 INFO L225 Difference]: With dead ends: 1455 [2024-11-28 04:26:39,707 INFO L226 Difference]: Without dead ends: 926 [2024-11-28 04:26:39,709 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 [2024-11-28 04:26:39,710 INFO L435 NwaCegarLoop]: 537 mSDtfsCounter, 245 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 958 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 [2024-11-28 04:26:39,710 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 958 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:26:39,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2024-11-28 04:26:39,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 922. [2024-11-28 04:26:39,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 782 states have (on average 1.6125319693094629) internal successors, (1261), 785 states have internal predecessors, (1261), 135 states have call successors, (135), 4 states have call predecessors, (135), 4 states have return successors, (135), 132 states have call predecessors, (135), 135 states have call successors, (135) [2024-11-28 04:26:39,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1531 transitions. [2024-11-28 04:26:39,810 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1531 transitions. Word has length 434 [2024-11-28 04:26:39,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:26:39,814 INFO L471 AbstractCegarLoop]: Abstraction has 922 states and 1531 transitions. [2024-11-28 04:26:39,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-28 04:26:39,814 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1531 transitions. [2024-11-28 04:26:39,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2024-11-28 04:26:39,825 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:26:39,825 INFO L218 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:39,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:26:39,825 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:26:39,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:39,827 INFO L85 PathProgramCache]: Analyzing trace with hash 781590407, now seen corresponding path program 1 times [2024-11-28 04:26:39,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:39,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269032136] [2024-11-28 04:26:39,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:39,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:40,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:42,106 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-11-28 04:26:42,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:42,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269032136] [2024-11-28 04:26:42,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269032136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:42,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:26:42,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:26:42,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423873849] [2024-11-28 04:26:42,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:42,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:26:42,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:42,113 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:26:42,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:26:42,117 INFO L87 Difference]: Start difference. First operand 922 states and 1531 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-28 04:26:42,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:26:42,759 INFO L93 Difference]: Finished difference Result 2646 states and 4404 transitions. [2024-11-28 04:26:42,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:26:42,760 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 434 [2024-11-28 04:26:42,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:26:42,774 INFO L225 Difference]: With dead ends: 2646 [2024-11-28 04:26:42,774 INFO L226 Difference]: Without dead ends: 1727 [2024-11-28 04:26:42,777 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 [2024-11-28 04:26:42,778 INFO L435 NwaCegarLoop]: 434 mSDtfsCounter, 351 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:26:42,779 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 1284 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:26:42,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1727 states. [2024-11-28 04:26:42,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1727 to 1621. [2024-11-28 04:26:42,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1621 states, 1413 states have (on average 1.6383581033262562) internal successors, (2315), 1416 states have internal predecessors, (2315), 200 states have call successors, (200), 7 states have call predecessors, (200), 7 states have return successors, (200), 197 states have call predecessors, (200), 200 states have call successors, (200) [2024-11-28 04:26:42,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1621 states to 1621 states and 2715 transitions. [2024-11-28 04:26:42,937 INFO L78 Accepts]: Start accepts. Automaton has 1621 states and 2715 transitions. Word has length 434 [2024-11-28 04:26:42,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:26:42,939 INFO L471 AbstractCegarLoop]: Abstraction has 1621 states and 2715 transitions. [2024-11-28 04:26:42,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-28 04:26:42,939 INFO L276 IsEmpty]: Start isEmpty. Operand 1621 states and 2715 transitions. [2024-11-28 04:26:42,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2024-11-28 04:26:42,949 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:26:42,950 INFO L218 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:42,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:26:42,950 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:26:42,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:42,951 INFO L85 PathProgramCache]: Analyzing trace with hash -128195510, now seen corresponding path program 1 times [2024-11-28 04:26:42,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:42,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568888460] [2024-11-28 04:26:42,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:42,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:43,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:46,012 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-11-28 04:26:46,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:46,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568888460] [2024-11-28 04:26:46,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568888460] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:46,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:26:46,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:26:46,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640621956] [2024-11-28 04:26:46,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:46,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:26:46,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:46,019 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:26:46,019 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:26:46,019 INFO L87 Difference]: Start difference. First operand 1621 states and 2715 transitions. Second operand has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-28 04:26:47,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:26:47,193 INFO L93 Difference]: Finished difference Result 3957 states and 6654 transitions. [2024-11-28 04:26:47,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:26:47,194 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 436 [2024-11-28 04:26:47,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:26:47,209 INFO L225 Difference]: With dead ends: 3957 [2024-11-28 04:26:47,209 INFO L226 Difference]: Without dead ends: 2831 [2024-11-28 04:26:47,212 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:26:47,214 INFO L435 NwaCegarLoop]: 586 mSDtfsCounter, 2055 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2055 SdHoareTripleChecker+Valid, 1395 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:26:47,215 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2055 Valid, 1395 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 04:26:47,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2831 states. [2024-11-28 04:26:47,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2831 to 1951. [2024-11-28 04:26:47,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1951 states, 1743 states have (on average 1.6230636833046472) internal successors, (2829), 1746 states have internal predecessors, (2829), 200 states have call successors, (200), 7 states have call predecessors, (200), 7 states have return successors, (200), 197 states have call predecessors, (200), 200 states have call successors, (200) [2024-11-28 04:26:47,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1951 states to 1951 states and 3229 transitions. [2024-11-28 04:26:47,395 INFO L78 Accepts]: Start accepts. Automaton has 1951 states and 3229 transitions. Word has length 436 [2024-11-28 04:26:47,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:26:47,397 INFO L471 AbstractCegarLoop]: Abstraction has 1951 states and 3229 transitions. [2024-11-28 04:26:47,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-28 04:26:47,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1951 states and 3229 transitions. [2024-11-28 04:26:47,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2024-11-28 04:26:47,407 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:26:47,407 INFO L218 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:47,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 04:26:47,408 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:26:47,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:47,408 INFO L85 PathProgramCache]: Analyzing trace with hash 765963726, now seen corresponding path program 1 times [2024-11-28 04:26:47,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:47,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989420274] [2024-11-28 04:26:47,409 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:47,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:48,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:49,407 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-11-28 04:26:49,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:49,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989420274] [2024-11-28 04:26:49,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989420274] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:49,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:26:49,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:26:49,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357235717] [2024-11-28 04:26:49,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:49,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:26:49,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:49,411 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:26:49,411 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:26:49,411 INFO L87 Difference]: Start difference. First operand 1951 states and 3229 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-28 04:26:50,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:26:50,455 INFO L93 Difference]: Finished difference Result 5597 states and 9310 transitions. [2024-11-28 04:26:50,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:26:50,456 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 436 [2024-11-28 04:26:50,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:26:50,478 INFO L225 Difference]: With dead ends: 5597 [2024-11-28 04:26:50,478 INFO L226 Difference]: Without dead ends: 4351 [2024-11-28 04:26:50,482 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:26:50,483 INFO L435 NwaCegarLoop]: 799 mSDtfsCounter, 949 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 1389 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:26:50,483 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 1389 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 04:26:50,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4351 states. [2024-11-28 04:26:50,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4351 to 3390. [2024-11-28 04:26:50,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3390 states, 3064 states have (on average 1.6546997389033942) internal successors, (5070), 3071 states have internal predecessors, (5070), 314 states have call successors, (314), 11 states have call predecessors, (314), 11 states have return successors, (314), 307 states have call predecessors, (314), 314 states have call successors, (314) [2024-11-28 04:26:50,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3390 states to 3390 states and 5698 transitions. [2024-11-28 04:26:50,722 INFO L78 Accepts]: Start accepts. Automaton has 3390 states and 5698 transitions. Word has length 436 [2024-11-28 04:26:50,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:26:50,722 INFO L471 AbstractCegarLoop]: Abstraction has 3390 states and 5698 transitions. [2024-11-28 04:26:50,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-28 04:26:50,723 INFO L276 IsEmpty]: Start isEmpty. Operand 3390 states and 5698 transitions. [2024-11-28 04:26:50,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2024-11-28 04:26:50,733 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:26:50,733 INFO L218 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:50,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 04:26:50,734 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:26:50,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:50,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1189610448, now seen corresponding path program 1 times [2024-11-28 04:26:50,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:50,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372225663] [2024-11-28 04:26:50,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:50,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:53,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:27:38,917 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-11-28 04:27:38,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:27:38,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372225663] [2024-11-28 04:27:38,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372225663] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:27:38,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:27:38,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2024-11-28 04:27:38,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252578290] [2024-11-28 04:27:38,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:27:38,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 04:27:38,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:27:38,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 04:27:38,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=589, Unknown=0, NotChecked=0, Total=650 [2024-11-28 04:27:38,921 INFO L87 Difference]: Start difference. First operand 3390 states and 5698 transitions. Second operand has 26 states, 26 states have (on average 4.384615384615385) internal successors, (114), 26 states have internal predecessors, (114), 7 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 7 states have call predecessors, (65), 7 states have call successors, (65) [2024-11-28 04:27:59,120 WARN L286 SmtUtils]: Spent 7.07s on a formula simplification. DAG size of input: 330 DAG size of output: 243 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:28:24,103 WARN L286 SmtUtils]: Spent 24.23s on a formula simplification. DAG size of input: 334 DAG size of output: 247 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:28:37,192 WARN L286 SmtUtils]: Spent 6.92s on a formula simplification. DAG size of input: 359 DAG size of output: 256 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:29:05,644 WARN L286 SmtUtils]: Spent 13.56s on a formula simplification. DAG size of input: 321 DAG size of output: 266 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:29:14,554 WARN L286 SmtUtils]: Spent 8.23s on a formula simplification. DAG size of input: 319 DAG size of output: 251 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:29:30,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:29:30,310 INFO L93 Difference]: Finished difference Result 13052 states and 21646 transitions. [2024-11-28 04:29:30,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-28 04:29:30,311 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.384615384615385) internal successors, (114), 26 states have internal predecessors, (114), 7 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 7 states have call predecessors, (65), 7 states have call successors, (65) Word has length 436 [2024-11-28 04:29:30,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:29:30,357 INFO L225 Difference]: With dead ends: 13052 [2024-11-28 04:29:30,357 INFO L226 Difference]: Without dead ends: 10937 [2024-11-28 04:29:30,365 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 84.4s TimeCoverageRelationStatistics Valid=501, Invalid=2049, Unknown=0, NotChecked=0, Total=2550 [2024-11-28 04:29:30,365 INFO L435 NwaCegarLoop]: 753 mSDtfsCounter, 6213 mSDsluCounter, 7216 mSDsCounter, 0 mSdLazyCounter, 8656 mSolverCounterSat, 627 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6213 SdHoareTripleChecker+Valid, 7969 SdHoareTripleChecker+Invalid, 9283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 627 IncrementalHoareTripleChecker+Valid, 8656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:29:30,366 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6213 Valid, 7969 Invalid, 9283 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [627 Valid, 8656 Invalid, 0 Unknown, 0 Unchecked, 33.3s Time] [2024-11-28 04:29:30,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10937 states. [2024-11-28 04:29:31,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10937 to 5623. [2024-11-28 04:29:31,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5623 states, 5115 states have (on average 1.6412512218963833) internal successors, (8395), 5134 states have internal predecessors, (8395), 478 states have call successors, (478), 29 states have call predecessors, (478), 29 states have return successors, (478), 459 states have call predecessors, (478), 478 states have call successors, (478) [2024-11-28 04:29:31,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5623 states to 5623 states and 9351 transitions. [2024-11-28 04:29:31,498 INFO L78 Accepts]: Start accepts. Automaton has 5623 states and 9351 transitions. Word has length 436 [2024-11-28 04:29:31,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:29:31,499 INFO L471 AbstractCegarLoop]: Abstraction has 5623 states and 9351 transitions. [2024-11-28 04:29:31,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.384615384615385) internal successors, (114), 26 states have internal predecessors, (114), 7 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 7 states have call predecessors, (65), 7 states have call successors, (65) [2024-11-28 04:29:31,503 INFO L276 IsEmpty]: Start isEmpty. Operand 5623 states and 9351 transitions. [2024-11-28 04:29:31,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2024-11-28 04:29:31,518 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:29:31,519 INFO L218 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:29:31,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 04:29:31,519 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:29:31,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:29:31,520 INFO L85 PathProgramCache]: Analyzing trace with hash 2083096786, now seen corresponding path program 1 times [2024-11-28 04:29:31,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:29:31,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541646831] [2024-11-28 04:29:31,521 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:29:31,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:29:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:29:36,052 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 24 proven. 168 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2024-11-28 04:29:36,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:29:36,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541646831] [2024-11-28 04:29:36,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541646831] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:29:36,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975446421] [2024-11-28 04:29:36,053 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:29:36,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:36,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:29:36,055 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:29:36,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:29:36,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:29:36,405 INFO L256 TraceCheckSpWp]: Trace formula consists of 1106 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:29:36,414 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:29:37,026 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 4182 proven. 105 refuted. 0 times theorem prover too weak. 4033 trivial. 0 not checked. [2024-11-28 04:29:37,026 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:29:37,525 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 87 proven. 105 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2024-11-28 04:29:37,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975446421] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:29:37,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:29:37,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 12 [2024-11-28 04:29:37,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490473664] [2024-11-28 04:29:37,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:29:37,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 04:29:37,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:29:37,528 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 04:29:37,528 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:29:37,529 INFO L87 Difference]: Start difference. First operand 5623 states and 9351 transitions. Second operand has 12 states, 12 states have (on average 16.666666666666668) internal successors, (200), 12 states have internal predecessors, (200), 4 states have call successors, (165), 2 states have call predecessors, (165), 4 states have return successors, (166), 4 states have call predecessors, (166), 4 states have call successors, (166) [2024-11-28 04:29:40,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:29:40,995 INFO L93 Difference]: Finished difference Result 14514 states and 24040 transitions. [2024-11-28 04:29:40,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-28 04:29:40,996 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 16.666666666666668) internal successors, (200), 12 states have internal predecessors, (200), 4 states have call successors, (165), 2 states have call predecessors, (165), 4 states have return successors, (166), 4 states have call predecessors, (166), 4 states have call successors, (166) Word has length 436 [2024-11-28 04:29:40,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:29:41,031 INFO L225 Difference]: With dead ends: 14514 [2024-11-28 04:29:41,032 INFO L226 Difference]: Without dead ends: 9052 [2024-11-28 04:29:41,043 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 913 GetRequests, 873 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=376, Invalid=1264, Unknown=0, NotChecked=0, Total=1640 [2024-11-28 04:29:41,043 INFO L435 NwaCegarLoop]: 346 mSDtfsCounter, 1315 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 551 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1343 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 1608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 551 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:29:41,044 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1343 Valid, 1848 Invalid, 1608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [551 Valid, 1057 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-28 04:29:41,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9052 states. [2024-11-28 04:29:42,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9052 to 7799. [2024-11-28 04:29:42,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7799 states, 7014 states have (on average 1.622041631023667) internal successors, (11377), 7040 states have internal predecessors, (11377), 725 states have call successors, (725), 59 states have call predecessors, (725), 59 states have return successors, (725), 699 states have call predecessors, (725), 725 states have call successors, (725) [2024-11-28 04:29:42,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7799 states to 7799 states and 12827 transitions. [2024-11-28 04:29:42,835 INFO L78 Accepts]: Start accepts. Automaton has 7799 states and 12827 transitions. Word has length 436 [2024-11-28 04:29:42,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:29:42,836 INFO L471 AbstractCegarLoop]: Abstraction has 7799 states and 12827 transitions. [2024-11-28 04:29:42,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.666666666666668) internal successors, (200), 12 states have internal predecessors, (200), 4 states have call successors, (165), 2 states have call predecessors, (165), 4 states have return successors, (166), 4 states have call predecessors, (166), 4 states have call successors, (166) [2024-11-28 04:29:42,838 INFO L276 IsEmpty]: Start isEmpty. Operand 7799 states and 12827 transitions. [2024-11-28 04:29:42,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2024-11-28 04:29:42,860 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:29:42,860 INFO L218 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:29:42,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:29:43,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-28 04:29:43,061 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:29:43,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:29:43,061 INFO L85 PathProgramCache]: Analyzing trace with hash 187457122, now seen corresponding path program 1 times [2024-11-28 04:29:43,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:29:43,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247100252] [2024-11-28 04:29:43,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:29:43,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:29:44,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:30:00,160 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-11-28 04:30:00,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:30:00,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247100252] [2024-11-28 04:30:00,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247100252] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:30:00,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:30:00,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2024-11-28 04:30:00,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012341264] [2024-11-28 04:30:00,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:30:00,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 04:30:00,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:30:00,162 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 04:30:00,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=458, Unknown=0, NotChecked=0, Total=506 [2024-11-28 04:30:00,164 INFO L87 Difference]: Start difference. First operand 7799 states and 12827 transitions. Second operand has 23 states, 23 states have (on average 5.0) internal successors, (115), 23 states have internal predecessors, (115), 5 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 5 states have call predecessors, (65), 5 states have call successors, (65) [2024-11-28 04:30:20,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:30:20,485 INFO L93 Difference]: Finished difference Result 17377 states and 28175 transitions. [2024-11-28 04:30:20,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-28 04:30:20,486 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.0) internal successors, (115), 23 states have internal predecessors, (115), 5 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 5 states have call predecessors, (65), 5 states have call successors, (65) Word has length 437 [2024-11-28 04:30:20,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:30:20,583 INFO L225 Difference]: With dead ends: 17377 [2024-11-28 04:30:20,583 INFO L226 Difference]: Without dead ends: 13563 [2024-11-28 04:30:20,590 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=440, Invalid=1816, Unknown=0, NotChecked=0, Total=2256 [2024-11-28 04:30:20,591 INFO L435 NwaCegarLoop]: 604 mSDtfsCounter, 6268 mSDsluCounter, 6077 mSDsCounter, 0 mSdLazyCounter, 5565 mSolverCounterSat, 666 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6268 SdHoareTripleChecker+Valid, 6681 SdHoareTripleChecker+Invalid, 6231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 666 IncrementalHoareTripleChecker+Valid, 5565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:30:20,592 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6268 Valid, 6681 Invalid, 6231 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [666 Valid, 5565 Invalid, 0 Unknown, 0 Unchecked, 13.1s Time] [2024-11-28 04:30:20,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13563 states. [2024-11-28 04:30:22,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13563 to 9338. [2024-11-28 04:30:22,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9338 states, 8428 states have (on average 1.6166350261034645) internal successors, (13625), 8464 states have internal predecessors, (13625), 825 states have call successors, (825), 84 states have call predecessors, (825), 84 states have return successors, (825), 789 states have call predecessors, (825), 825 states have call successors, (825) [2024-11-28 04:30:22,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9338 states to 9338 states and 15275 transitions. [2024-11-28 04:30:22,537 INFO L78 Accepts]: Start accepts. Automaton has 9338 states and 15275 transitions. Word has length 437 [2024-11-28 04:30:22,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:30:22,538 INFO L471 AbstractCegarLoop]: Abstraction has 9338 states and 15275 transitions. [2024-11-28 04:30:22,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.0) internal successors, (115), 23 states have internal predecessors, (115), 5 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 5 states have call predecessors, (65), 5 states have call successors, (65) [2024-11-28 04:30:22,538 INFO L276 IsEmpty]: Start isEmpty. Operand 9338 states and 15275 transitions. [2024-11-28 04:30:22,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2024-11-28 04:30:22,548 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:30:22,548 INFO L218 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:30:22,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 04:30:22,549 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:30:22,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:30:22,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1954469374, now seen corresponding path program 1 times [2024-11-28 04:30:22,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:30:22,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128853252] [2024-11-28 04:30:22,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:30:22,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:30:23,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:30:23,671 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-11-28 04:30:23,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:30:23,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128853252] [2024-11-28 04:30:23,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128853252] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:30:23,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:30:23,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:30:23,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672282103] [2024-11-28 04:30:23,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:30:23,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:30:23,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:30:23,673 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:30:23,673 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:30:23,673 INFO L87 Difference]: Start difference. First operand 9338 states and 15275 transitions. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-28 04:30:26,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:30:26,820 INFO L93 Difference]: Finished difference Result 21278 states and 35022 transitions. [2024-11-28 04:30:26,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:30:26,821 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 437 [2024-11-28 04:30:26,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:30:26,874 INFO L225 Difference]: With dead ends: 21278 [2024-11-28 04:30:26,874 INFO L226 Difference]: Without dead ends: 17127 [2024-11-28 04:30:26,883 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:30:26,884 INFO L435 NwaCegarLoop]: 611 mSDtfsCounter, 1052 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 1298 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:30:26,884 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1052 Valid, 1298 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 04:30:26,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17127 states. [2024-11-28 04:30:29,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17127 to 13590. [2024-11-28 04:30:29,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13590 states, 12392 states have (on average 1.6202388637830858) internal successors, (20078), 12448 states have internal predecessors, (20078), 1089 states have call successors, (1089), 108 states have call predecessors, (1089), 108 states have return successors, (1089), 1033 states have call predecessors, (1089), 1089 states have call successors, (1089) [2024-11-28 04:30:29,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13590 states to 13590 states and 22256 transitions. [2024-11-28 04:30:29,369 INFO L78 Accepts]: Start accepts. Automaton has 13590 states and 22256 transitions. Word has length 437 [2024-11-28 04:30:29,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:30:29,370 INFO L471 AbstractCegarLoop]: Abstraction has 13590 states and 22256 transitions. [2024-11-28 04:30:29,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-28 04:30:29,371 INFO L276 IsEmpty]: Start isEmpty. Operand 13590 states and 22256 transitions. [2024-11-28 04:30:29,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2024-11-28 04:30:29,383 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:30:29,383 INFO L218 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:30:29,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 04:30:29,384 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:30:29,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:30:29,384 INFO L85 PathProgramCache]: Analyzing trace with hash 2115729824, now seen corresponding path program 1 times [2024-11-28 04:30:29,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:30:29,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119506575] [2024-11-28 04:30:29,385 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:30:29,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:30:32,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:30:32,712 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 54 proven. 138 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2024-11-28 04:30:32,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:30:32,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119506575] [2024-11-28 04:30:32,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119506575] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:30:32,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276486144] [2024-11-28 04:30:32,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:30:32,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:30:32,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:30:32,715 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:30:32,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:30:33,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:30:33,052 INFO L256 TraceCheckSpWp]: Trace formula consists of 1108 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 04:30:33,060 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:30:33,793 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 3412 proven. 138 refuted. 0 times theorem prover too weak. 4770 trivial. 0 not checked. [2024-11-28 04:30:33,794 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:30:34,476 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 54 proven. 138 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2024-11-28 04:30:34,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276486144] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:30:34,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:30:34,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-28 04:30:34,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179556177] [2024-11-28 04:30:34,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:30:34,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 04:30:34,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:30:34,479 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 04:30:34,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:30:34,480 INFO L87 Difference]: Start difference. First operand 13590 states and 22256 transitions. Second operand has 10 states, 10 states have (on average 18.0) internal successors, (180), 10 states have internal predecessors, (180), 3 states have call successors, (157), 2 states have call predecessors, (157), 4 states have return successors, (158), 3 states have call predecessors, (158), 3 states have call successors, (158) [2024-11-28 04:30:36,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:30:36,823 INFO L93 Difference]: Finished difference Result 21927 states and 35779 transitions. [2024-11-28 04:30:36,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:30:36,824 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.0) internal successors, (180), 10 states have internal predecessors, (180), 3 states have call successors, (157), 2 states have call predecessors, (157), 4 states have return successors, (158), 3 states have call predecessors, (158), 3 states have call successors, (158) Word has length 437 [2024-11-28 04:30:36,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:30:36,857 INFO L225 Difference]: With dead ends: 21927 [2024-11-28 04:30:36,857 INFO L226 Difference]: Without dead ends: 12936 [2024-11-28 04:30:36,872 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 883 GetRequests, 870 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2024-11-28 04:30:36,872 INFO L435 NwaCegarLoop]: 347 mSDtfsCounter, 499 mSDsluCounter, 1235 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 1582 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:30:36,873 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [517 Valid, 1582 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 04:30:36,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12936 states. [2024-11-28 04:30:38,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12936 to 12888. [2024-11-28 04:30:38,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12888 states, 11795 states have (on average 1.6172106824925816) internal successors, (19075), 11845 states have internal predecessors, (19075), 971 states have call successors, (971), 121 states have call predecessors, (971), 121 states have return successors, (971), 921 states have call predecessors, (971), 971 states have call successors, (971) [2024-11-28 04:30:38,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12888 states to 12888 states and 21017 transitions. [2024-11-28 04:30:38,769 INFO L78 Accepts]: Start accepts. Automaton has 12888 states and 21017 transitions. Word has length 437 [2024-11-28 04:30:38,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:30:38,769 INFO L471 AbstractCegarLoop]: Abstraction has 12888 states and 21017 transitions. [2024-11-28 04:30:38,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.0) internal successors, (180), 10 states have internal predecessors, (180), 3 states have call successors, (157), 2 states have call predecessors, (157), 4 states have return successors, (158), 3 states have call predecessors, (158), 3 states have call successors, (158) [2024-11-28 04:30:38,770 INFO L276 IsEmpty]: Start isEmpty. Operand 12888 states and 21017 transitions. [2024-11-28 04:30:38,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2024-11-28 04:30:38,786 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:30:38,787 INFO L218 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:30:38,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 04:30:38,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-28 04:30:38,987 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:30:38,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:30:38,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1609072665, now seen corresponding path program 1 times [2024-11-28 04:30:38,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:30:38,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247258486] [2024-11-28 04:30:38,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:30:38,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:30:39,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:30:40,170 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-11-28 04:30:40,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:30:40,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247258486] [2024-11-28 04:30:40,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247258486] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:30:40,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:30:40,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 04:30:40,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448905413] [2024-11-28 04:30:40,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:30:40,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:30:40,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:30:40,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:30:40,172 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:30:40,173 INFO L87 Difference]: Start difference. First operand 12888 states and 21017 transitions. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 2 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2024-11-28 04:30:44,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:30:44,517 INFO L93 Difference]: Finished difference Result 26844 states and 42458 transitions. [2024-11-28 04:30:44,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:30:44,518 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 2 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) Word has length 438 [2024-11-28 04:30:44,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:30:44,559 INFO L225 Difference]: With dead ends: 26844 [2024-11-28 04:30:44,559 INFO L226 Difference]: Without dead ends: 18438 [2024-11-28 04:30:44,575 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:30:44,575 INFO L435 NwaCegarLoop]: 465 mSDtfsCounter, 1350 mSDsluCounter, 2514 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 595 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1350 SdHoareTripleChecker+Valid, 2979 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 595 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:30:44,576 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1350 Valid, 2979 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [595 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 04:30:44,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18438 states. [2024-11-28 04:30:47,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18438 to 17874. [2024-11-28 04:30:47,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17874 states, 15873 states have (on average 1.5667485667485668) internal successors, (24869), 15975 states have internal predecessors, (24869), 1771 states have call successors, (1771), 229 states have call predecessors, (1771), 229 states have return successors, (1771), 1669 states have call predecessors, (1771), 1771 states have call successors, (1771) [2024-11-28 04:30:47,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17874 states to 17874 states and 28411 transitions. [2024-11-28 04:30:47,942 INFO L78 Accepts]: Start accepts. Automaton has 17874 states and 28411 transitions. Word has length 438 [2024-11-28 04:30:47,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:30:47,943 INFO L471 AbstractCegarLoop]: Abstraction has 17874 states and 28411 transitions. [2024-11-28 04:30:47,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 2 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2024-11-28 04:30:47,943 INFO L276 IsEmpty]: Start isEmpty. Operand 17874 states and 28411 transitions. [2024-11-28 04:30:47,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2024-11-28 04:30:47,961 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:30:47,961 INFO L218 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:30:47,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 04:30:47,961 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:30:47,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:30:47,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1827927383, now seen corresponding path program 1 times [2024-11-28 04:30:47,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:30:47,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147388276] [2024-11-28 04:30:47,963 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:30:47,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:30:50,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:30:51,719 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 30 proven. 162 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2024-11-28 04:30:51,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:30:51,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147388276] [2024-11-28 04:30:51,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147388276] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:30:51,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128554505] [2024-11-28 04:30:51,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:30:51,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:30:51,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:30:51,722 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:30:51,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:30:52,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:30:52,130 INFO L256 TraceCheckSpWp]: Trace formula consists of 1109 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 04:30:52,141 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:30:53,925 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 3602 proven. 297 refuted. 0 times theorem prover too weak. 4421 trivial. 0 not checked. [2024-11-28 04:30:53,926 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:30:54,864 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 81 proven. 300 refuted. 0 times theorem prover too weak. 7939 trivial. 0 not checked. [2024-11-28 04:30:54,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128554505] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:30:54,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:30:54,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 21 [2024-11-28 04:30:54,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605169360] [2024-11-28 04:30:54,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:30:54,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 04:30:54,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:30:54,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 04:30:54,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2024-11-28 04:30:54,868 INFO L87 Difference]: Start difference. First operand 17874 states and 28411 transitions. Second operand has 21 states, 21 states have (on average 12.476190476190476) internal successors, (262), 21 states have internal predecessors, (262), 7 states have call successors, (184), 3 states have call predecessors, (184), 7 states have return successors, (185), 7 states have call predecessors, (185), 7 states have call successors, (185) [2024-11-28 04:31:00,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:31:00,838 INFO L93 Difference]: Finished difference Result 57100 states and 90516 transitions. [2024-11-28 04:31:00,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-28 04:31:00,839 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 12.476190476190476) internal successors, (262), 21 states have internal predecessors, (262), 7 states have call successors, (184), 3 states have call predecessors, (184), 7 states have return successors, (185), 7 states have call predecessors, (185), 7 states have call successors, (185) Word has length 438 [2024-11-28 04:31:00,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:31:00,922 INFO L225 Difference]: With dead ends: 57100 [2024-11-28 04:31:00,922 INFO L226 Difference]: Without dead ends: 39818 [2024-11-28 04:31:00,953 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 916 GetRequests, 870 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=565, Invalid=1691, Unknown=0, NotChecked=0, Total=2256 [2024-11-28 04:31:00,954 INFO L435 NwaCegarLoop]: 485 mSDtfsCounter, 3020 mSDsluCounter, 3396 mSDsCounter, 0 mSdLazyCounter, 1963 mSolverCounterSat, 432 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3031 SdHoareTripleChecker+Valid, 3881 SdHoareTripleChecker+Invalid, 2395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 432 IncrementalHoareTripleChecker+Valid, 1963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:31:00,954 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3031 Valid, 3881 Invalid, 2395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [432 Valid, 1963 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-28 04:31:00,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39818 states. [2024-11-28 04:31:04,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39818 to 37055. [2024-11-28 04:31:04,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37055 states, 32982 states have (on average 1.5486325874719544) internal successors, (51077), 33170 states have internal predecessors, (51077), 3445 states have call successors, (3445), 627 states have call predecessors, (3445), 627 states have return successors, (3445), 3257 states have call predecessors, (3445), 3445 states have call successors, (3445) [2024-11-28 04:31:04,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37055 states to 37055 states and 57967 transitions. [2024-11-28 04:31:04,928 INFO L78 Accepts]: Start accepts. Automaton has 37055 states and 57967 transitions. Word has length 438 [2024-11-28 04:31:04,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:31:04,928 INFO L471 AbstractCegarLoop]: Abstraction has 37055 states and 57967 transitions. [2024-11-28 04:31:04,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 12.476190476190476) internal successors, (262), 21 states have internal predecessors, (262), 7 states have call successors, (184), 3 states have call predecessors, (184), 7 states have return successors, (185), 7 states have call predecessors, (185), 7 states have call successors, (185) [2024-11-28 04:31:04,929 INFO L276 IsEmpty]: Start isEmpty. Operand 37055 states and 57967 transitions. [2024-11-28 04:31:04,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2024-11-28 04:31:04,950 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:31:04,950 INFO L218 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:31:04,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 04:31:05,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 04:31:05,150 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:31:05,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:31:05,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1768617213, now seen corresponding path program 1 times [2024-11-28 04:31:05,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:31:05,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314920614] [2024-11-28 04:31:05,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:31:05,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:31:07,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:31:08,084 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 72 proven. 120 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2024-11-28 04:31:08,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:31:08,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314920614] [2024-11-28 04:31:08,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314920614] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:31:08,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480256356] [2024-11-28 04:31:08,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:31:08,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:31:08,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:31:08,086 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:31:08,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:31:08,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:31:08,468 INFO L256 TraceCheckSpWp]: Trace formula consists of 1108 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:31:08,472 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:31:09,029 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 4068 proven. 114 refuted. 0 times theorem prover too weak. 4138 trivial. 0 not checked. [2024-11-28 04:31:09,029 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:31:09,465 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 78 proven. 114 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2024-11-28 04:31:09,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480256356] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:31:09,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:31:09,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-28 04:31:09,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537675519] [2024-11-28 04:31:09,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:31:09,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:31:09,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:31:09,467 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:31:09,467 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:31:09,467 INFO L87 Difference]: Start difference. First operand 37055 states and 57967 transitions. Second operand has 8 states, 8 states have (on average 21.75) internal successors, (174), 8 states have internal predecessors, (174), 3 states have call successors, (143), 2 states have call predecessors, (143), 4 states have return successors, (145), 3 states have call predecessors, (145), 3 states have call successors, (145) [2024-11-28 04:31:10,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:31:10,875 INFO L93 Difference]: Finished difference Result 47187 states and 73678 transitions. [2024-11-28 04:31:10,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 04:31:10,876 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.75) internal successors, (174), 8 states have internal predecessors, (174), 3 states have call successors, (143), 2 states have call predecessors, (143), 4 states have return successors, (145), 3 states have call predecessors, (145), 3 states have call successors, (145) Word has length 438 [2024-11-28 04:31:10,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:31:10,908 INFO L225 Difference]: With dead ends: 47187 [2024-11-28 04:31:10,908 INFO L226 Difference]: Without dead ends: 11741 [2024-11-28 04:31:10,944 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 889 GetRequests, 873 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2024-11-28 04:31:10,945 INFO L435 NwaCegarLoop]: 377 mSDtfsCounter, 751 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:31:10,945 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [752 Valid, 982 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 04:31:10,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11741 states. [2024-11-28 04:31:12,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11741 to 11693. [2024-11-28 04:31:12,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11693 states, 10288 states have (on average 1.5403382581648521) internal successors, (15847), 10350 states have internal predecessors, (15847), 1211 states have call successors, (1211), 193 states have call predecessors, (1211), 193 states have return successors, (1211), 1149 states have call predecessors, (1211), 1211 states have call successors, (1211) [2024-11-28 04:31:12,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11693 states to 11693 states and 18269 transitions. [2024-11-28 04:31:12,184 INFO L78 Accepts]: Start accepts. Automaton has 11693 states and 18269 transitions. Word has length 438 [2024-11-28 04:31:12,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:31:12,185 INFO L471 AbstractCegarLoop]: Abstraction has 11693 states and 18269 transitions. [2024-11-28 04:31:12,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.75) internal successors, (174), 8 states have internal predecessors, (174), 3 states have call successors, (143), 2 states have call predecessors, (143), 4 states have return successors, (145), 3 states have call predecessors, (145), 3 states have call successors, (145) [2024-11-28 04:31:12,185 INFO L276 IsEmpty]: Start isEmpty. Operand 11693 states and 18269 transitions. [2024-11-28 04:31:12,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2024-11-28 04:31:12,198 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:31:12,198 INFO L218 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:31:12,206 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 04:31:12,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 04:31:12,399 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:31:12,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:31:12,400 INFO L85 PathProgramCache]: Analyzing trace with hash 2106318596, now seen corresponding path program 1 times [2024-11-28 04:31:12,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:31:12,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402186387] [2024-11-28 04:31:12,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:31:12,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:31:12,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:31:12,791 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-11-28 04:31:12,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:31:12,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402186387] [2024-11-28 04:31:12,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402186387] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:31:12,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:31:12,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:31:12,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099650682] [2024-11-28 04:31:12,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:31:12,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:31:12,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:31:12,793 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:31:12,793 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:31:12,794 INFO L87 Difference]: Start difference. First operand 11693 states and 18269 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-28 04:31:13,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:31:13,719 INFO L93 Difference]: Finished difference Result 23226 states and 36325 transitions. [2024-11-28 04:31:13,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:31:13,720 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 439 [2024-11-28 04:31:13,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:31:13,752 INFO L225 Difference]: With dead ends: 23226 [2024-11-28 04:31:13,753 INFO L226 Difference]: Without dead ends: 11693 [2024-11-28 04:31:13,770 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 [2024-11-28 04:31:13,771 INFO L435 NwaCegarLoop]: 402 mSDtfsCounter, 522 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:31:13,771 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 402 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:31:13,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11693 states. [2024-11-28 04:31:14,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11693 to 11693. [2024-11-28 04:31:14,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11693 states, 10288 states have (on average 1.5400466562986004) internal successors, (15844), 10350 states have internal predecessors, (15844), 1211 states have call successors, (1211), 193 states have call predecessors, (1211), 193 states have return successors, (1211), 1149 states have call predecessors, (1211), 1211 states have call successors, (1211) [2024-11-28 04:31:14,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11693 states to 11693 states and 18266 transitions. [2024-11-28 04:31:14,722 INFO L78 Accepts]: Start accepts. Automaton has 11693 states and 18266 transitions. Word has length 439 [2024-11-28 04:31:14,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:31:14,723 INFO L471 AbstractCegarLoop]: Abstraction has 11693 states and 18266 transitions. [2024-11-28 04:31:14,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-28 04:31:14,723 INFO L276 IsEmpty]: Start isEmpty. Operand 11693 states and 18266 transitions. [2024-11-28 04:31:14,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2024-11-28 04:31:14,729 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:31:14,729 INFO L218 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:31:14,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 04:31:14,729 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:31:14,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:31:14,730 INFO L85 PathProgramCache]: Analyzing trace with hash -2111747902, now seen corresponding path program 1 times [2024-11-28 04:31:14,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:31:14,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560828130] [2024-11-28 04:31:14,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:31:14,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:31:15,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:31:15,700 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-11-28 04:31:15,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:31:15,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560828130] [2024-11-28 04:31:15,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560828130] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:31:15,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:31:15,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:31:15,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483617126] [2024-11-28 04:31:15,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:31:15,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:31:15,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:31:15,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:31:15,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:31:15,702 INFO L87 Difference]: Start difference. First operand 11693 states and 18266 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-28 04:31:16,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:31:16,536 INFO L93 Difference]: Finished difference Result 22195 states and 34596 transitions. [2024-11-28 04:31:16,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:31:16,537 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 439 [2024-11-28 04:31:16,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:31:16,568 INFO L225 Difference]: With dead ends: 22195 [2024-11-28 04:31:16,568 INFO L226 Difference]: Without dead ends: 11735 [2024-11-28 04:31:16,582 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:31:16,583 INFO L435 NwaCegarLoop]: 653 mSDtfsCounter, 506 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:31:16,583 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 1149 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:31:16,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11735 states. [2024-11-28 04:31:17,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11735 to 8261. [2024-11-28 04:31:17,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8261 states, 7424 states have (on average 1.5638469827586208) internal successors, (11610), 7454 states have internal predecessors, (11610), 715 states have call successors, (715), 121 states have call predecessors, (715), 121 states have return successors, (715), 685 states have call predecessors, (715), 715 states have call successors, (715) [2024-11-28 04:31:17,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8261 states to 8261 states and 13040 transitions. [2024-11-28 04:31:17,377 INFO L78 Accepts]: Start accepts. Automaton has 8261 states and 13040 transitions. Word has length 439 [2024-11-28 04:31:17,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:31:17,378 INFO L471 AbstractCegarLoop]: Abstraction has 8261 states and 13040 transitions. [2024-11-28 04:31:17,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-28 04:31:17,378 INFO L276 IsEmpty]: Start isEmpty. Operand 8261 states and 13040 transitions. [2024-11-28 04:31:17,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2024-11-28 04:31:17,384 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:31:17,384 INFO L218 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:31:17,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 04:31:17,384 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:31:17,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:31:17,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1329047964, now seen corresponding path program 1 times [2024-11-28 04:31:17,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:31:17,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243247060] [2024-11-28 04:31:17,385 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:31:17,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:31:19,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:33:54,127 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-11-28 04:33:54,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:33:54,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243247060] [2024-11-28 04:33:54,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243247060] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:33:54,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:33:54,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2024-11-28 04:33:54,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976771419] [2024-11-28 04:33:54,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:33:54,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-28 04:33:54,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:33:54,129 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-28 04:33:54,129 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=802, Unknown=0, NotChecked=0, Total=870 [2024-11-28 04:33:54,129 INFO L87 Difference]: Start difference. First operand 8261 states and 13040 transitions. Second operand has 30 states, 30 states have (on average 3.933333333333333) internal successors, (118), 30 states have internal predecessors, (118), 7 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 7 states have call predecessors, (65), 7 states have call successors, (65) [2024-11-28 04:34:44,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:34:44,365 INFO L93 Difference]: Finished difference Result 23698 states and 37283 transitions. [2024-11-28 04:34:44,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-28 04:34:44,365 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.933333333333333) internal successors, (118), 30 states have internal predecessors, (118), 7 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 7 states have call predecessors, (65), 7 states have call successors, (65) Word has length 440 [2024-11-28 04:34:44,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:34:44,405 INFO L225 Difference]: With dead ends: 23698 [2024-11-28 04:34:44,405 INFO L226 Difference]: Without dead ends: 19650 [2024-11-28 04:34:44,416 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 22.8s TimeCoverageRelationStatistics Valid=728, Invalid=2812, Unknown=0, NotChecked=0, Total=3540 [2024-11-28 04:34:44,417 INFO L435 NwaCegarLoop]: 687 mSDtfsCounter, 8010 mSDsluCounter, 7250 mSDsCounter, 0 mSdLazyCounter, 9587 mSolverCounterSat, 637 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8010 SdHoareTripleChecker+Valid, 7937 SdHoareTripleChecker+Invalid, 10224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 637 IncrementalHoareTripleChecker+Valid, 9587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:34:44,417 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8010 Valid, 7937 Invalid, 10224 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [637 Valid, 9587 Invalid, 0 Unknown, 0 Unchecked, 32.1s Time] [2024-11-28 04:34:44,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19650 states. [2024-11-28 04:34:45,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19650 to 9989. [2024-11-28 04:34:45,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9989 states, 9008 states have (on average 1.5557282415630551) internal successors, (14014), 9054 states have internal predecessors, (14014), 843 states have call successors, (843), 137 states have call predecessors, (843), 137 states have return successors, (843), 797 states have call predecessors, (843), 843 states have call successors, (843) [2024-11-28 04:34:45,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9989 states to 9989 states and 15700 transitions. [2024-11-28 04:34:45,370 INFO L78 Accepts]: Start accepts. Automaton has 9989 states and 15700 transitions. Word has length 440 [2024-11-28 04:34:45,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:34:45,370 INFO L471 AbstractCegarLoop]: Abstraction has 9989 states and 15700 transitions. [2024-11-28 04:34:45,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.933333333333333) internal successors, (118), 30 states have internal predecessors, (118), 7 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 7 states have call predecessors, (65), 7 states have call successors, (65) [2024-11-28 04:34:45,370 INFO L276 IsEmpty]: Start isEmpty. Operand 9989 states and 15700 transitions. [2024-11-28 04:34:45,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2024-11-28 04:34:45,375 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:34:45,376 INFO L218 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:34:45,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 04:34:45,376 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:34:45,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:34:45,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1026757286, now seen corresponding path program 1 times [2024-11-28 04:34:45,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:34:45,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526344984] [2024-11-28 04:34:45,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:45,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:34:47,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:48,814 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 24 proven. 168 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2024-11-28 04:34:48,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:34:48,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526344984] [2024-11-28 04:34:48,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526344984] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:34:48,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425835526] [2024-11-28 04:34:48,815 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:48,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:48,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:34:48,817 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:34:48,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:34:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:49,195 INFO L256 TraceCheckSpWp]: Trace formula consists of 1105 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 04:34:49,201 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:34:50,102 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 1872 proven. 168 refuted. 0 times theorem prover too weak. 6280 trivial. 0 not checked. [2024-11-28 04:34:50,102 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:34:50,802 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 24 proven. 168 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2024-11-28 04:34:50,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425835526] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:34:50,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:34:50,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 19 [2024-11-28 04:34:50,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067410827] [2024-11-28 04:34:50,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:34:50,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 04:34:50,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:34:50,806 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 04:34:50,806 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:34:50,806 INFO L87 Difference]: Start difference. First operand 9989 states and 15700 transitions. Second operand has 19 states, 19 states have (on average 15.263157894736842) internal successors, (290), 19 states have internal predecessors, (290), 5 states have call successors, (186), 2 states have call predecessors, (186), 4 states have return successors, (187), 5 states have call predecessors, (187), 5 states have call successors, (187) [2024-11-28 04:34:56,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:34:56,638 INFO L93 Difference]: Finished difference Result 28575 states and 44315 transitions. [2024-11-28 04:34:56,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-28 04:34:56,639 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 15.263157894736842) internal successors, (290), 19 states have internal predecessors, (290), 5 states have call successors, (186), 2 states have call predecessors, (186), 4 states have return successors, (187), 5 states have call predecessors, (187), 5 states have call successors, (187) Word has length 440 [2024-11-28 04:34:56,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:34:56,670 INFO L225 Difference]: With dead ends: 28575 [2024-11-28 04:34:56,670 INFO L226 Difference]: Without dead ends: 19811 [2024-11-28 04:34:56,681 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 923 GetRequests, 876 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=430, Invalid=1922, Unknown=0, NotChecked=0, Total=2352 [2024-11-28 04:34:56,682 INFO L435 NwaCegarLoop]: 682 mSDtfsCounter, 3962 mSDsluCounter, 4891 mSDsCounter, 0 mSdLazyCounter, 3016 mSolverCounterSat, 725 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3979 SdHoareTripleChecker+Valid, 5573 SdHoareTripleChecker+Invalid, 3741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 725 IncrementalHoareTripleChecker+Valid, 3016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:34:56,682 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3979 Valid, 5573 Invalid, 3741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [725 Valid, 3016 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-28 04:34:56,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19811 states. [2024-11-28 04:34:57,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19811 to 11153. [2024-11-28 04:34:57,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11153 states, 10140 states have (on average 1.5775147928994082) internal successors, (15996), 10186 states have internal predecessors, (15996), 843 states have call successors, (843), 169 states have call predecessors, (843), 169 states have return successors, (843), 797 states have call predecessors, (843), 843 states have call successors, (843) [2024-11-28 04:34:57,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11153 states to 11153 states and 17682 transitions. [2024-11-28 04:34:57,730 INFO L78 Accepts]: Start accepts. Automaton has 11153 states and 17682 transitions. Word has length 440 [2024-11-28 04:34:57,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:34:57,731 INFO L471 AbstractCegarLoop]: Abstraction has 11153 states and 17682 transitions. [2024-11-28 04:34:57,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 15.263157894736842) internal successors, (290), 19 states have internal predecessors, (290), 5 states have call successors, (186), 2 states have call predecessors, (186), 4 states have return successors, (187), 5 states have call predecessors, (187), 5 states have call successors, (187) [2024-11-28 04:34:57,731 INFO L276 IsEmpty]: Start isEmpty. Operand 11153 states and 17682 transitions. [2024-11-28 04:34:57,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2024-11-28 04:34:57,736 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:34:57,736 INFO L218 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:34:57,744 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 04:34:57,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:57,936 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:34:57,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:34:57,937 INFO L85 PathProgramCache]: Analyzing trace with hash -423127888, now seen corresponding path program 1 times [2024-11-28 04:34:57,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:34:57,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839527798] [2024-11-28 04:34:57,937 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:57,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:34:59,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:59,840 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 66 proven. 126 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2024-11-28 04:34:59,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:34:59,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839527798] [2024-11-28 04:34:59,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839527798] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:34:59,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829372408] [2024-11-28 04:34:59,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:59,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:59,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:34:59,842 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:34:59,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:35:00,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:35:00,316 INFO L256 TraceCheckSpWp]: Trace formula consists of 1108 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:35:00,321 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:35:00,871 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 3804 proven. 126 refuted. 0 times theorem prover too weak. 4390 trivial. 0 not checked. [2024-11-28 04:35:00,871 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:35:01,366 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 66 proven. 126 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2024-11-28 04:35:01,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829372408] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:35:01,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:35:01,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-28 04:35:01,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713299192] [2024-11-28 04:35:01,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:35:01,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:35:01,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:35:01,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:35:01,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:35:01,369 INFO L87 Difference]: Start difference. First operand 11153 states and 17682 transitions. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 2 states have call successors, (107), 2 states have call predecessors, (107), 4 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) [2024-11-28 04:35:02,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:35:02,482 INFO L93 Difference]: Finished difference Result 16613 states and 25980 transitions. [2024-11-28 04:35:02,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:35:02,483 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 2 states have call successors, (107), 2 states have call predecessors, (107), 4 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) Word has length 441 [2024-11-28 04:35:02,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:35:02,508 INFO L225 Difference]: With dead ends: 16613 [2024-11-28 04:35:02,508 INFO L226 Difference]: Without dead ends: 6859 [2024-11-28 04:35:02,517 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 889 GetRequests, 879 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:35:02,518 INFO L435 NwaCegarLoop]: 370 mSDtfsCounter, 250 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:35:02,518 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 967 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:35:02,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6859 states. [2024-11-28 04:35:03,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6859 to 6819. [2024-11-28 04:35:03,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6819 states, 5941 states have (on average 1.531896987039219) internal successors, (9101), 5971 states have internal predecessors, (9101), 715 states have call successors, (715), 162 states have call predecessors, (715), 162 states have return successors, (715), 685 states have call predecessors, (715), 715 states have call successors, (715) [2024-11-28 04:35:03,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6819 states to 6819 states and 10531 transitions. [2024-11-28 04:35:03,064 INFO L78 Accepts]: Start accepts. Automaton has 6819 states and 10531 transitions. Word has length 441 [2024-11-28 04:35:03,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:35:03,064 INFO L471 AbstractCegarLoop]: Abstraction has 6819 states and 10531 transitions. [2024-11-28 04:35:03,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 2 states have call successors, (107), 2 states have call predecessors, (107), 4 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) [2024-11-28 04:35:03,065 INFO L276 IsEmpty]: Start isEmpty. Operand 6819 states and 10531 transitions. [2024-11-28 04:35:03,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2024-11-28 04:35:03,070 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:35:03,071 INFO L218 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:35:03,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 04:35:03,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:35:03,271 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:35:03,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:35:03,272 INFO L85 PathProgramCache]: Analyzing trace with hash 827907157, now seen corresponding path program 1 times [2024-11-28 04:35:03,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:35:03,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502851849] [2024-11-28 04:35:03,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:35:03,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:35:04,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:35:05,744 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 144 proven. 48 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2024-11-28 04:35:05,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:35:05,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502851849] [2024-11-28 04:35:05,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502851849] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:35:05,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481432824] [2024-11-28 04:35:05,745 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:35:05,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:35:05,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:35:05,747 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:35:05,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:35:06,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:35:06,222 INFO L256 TraceCheckSpWp]: Trace formula consists of 1105 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:35:06,227 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:35:06,728 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 3232 proven. 48 refuted. 0 times theorem prover too weak. 5040 trivial. 0 not checked. [2024-11-28 04:35:06,728 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:35:07,308 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 144 proven. 48 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2024-11-28 04:35:07,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481432824] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:35:07,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:35:07,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-28 04:35:07,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198061336] [2024-11-28 04:35:07,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:35:07,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 04:35:07,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:35:07,312 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 04:35:07,312 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2024-11-28 04:35:07,312 INFO L87 Difference]: Start difference. First operand 6819 states and 10531 transitions. Second operand has 14 states, 14 states have (on average 15.642857142857142) internal successors, (219), 14 states have internal predecessors, (219), 3 states have call successors, (97), 2 states have call predecessors, (97), 4 states have return successors, (98), 3 states have call predecessors, (98), 3 states have call successors, (98) [2024-11-28 04:35:12,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:35:12,383 INFO L93 Difference]: Finished difference Result 27221 states and 40666 transitions. [2024-11-28 04:35:12,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-28 04:35:12,384 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 15.642857142857142) internal successors, (219), 14 states have internal predecessors, (219), 3 states have call successors, (97), 2 states have call predecessors, (97), 4 states have return successors, (98), 3 states have call predecessors, (98), 3 states have call successors, (98) Word has length 441 [2024-11-28 04:35:12,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:35:12,424 INFO L225 Difference]: With dead ends: 27221 [2024-11-28 04:35:12,424 INFO L226 Difference]: Without dead ends: 21509 [2024-11-28 04:35:12,434 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 913 GetRequests, 881 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=352, Invalid=770, Unknown=0, NotChecked=0, Total=1122 [2024-11-28 04:35:12,435 INFO L435 NwaCegarLoop]: 358 mSDtfsCounter, 1312 mSDsluCounter, 1897 mSDsCounter, 0 mSdLazyCounter, 1495 mSolverCounterSat, 546 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1389 SdHoareTripleChecker+Valid, 2255 SdHoareTripleChecker+Invalid, 2041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 546 IncrementalHoareTripleChecker+Valid, 1495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:35:12,435 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1389 Valid, 2255 Invalid, 2041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [546 Valid, 1495 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-28 04:35:12,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21509 states. [2024-11-28 04:35:13,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21509 to 11613. [2024-11-28 04:35:13,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11613 states, 10731 states have (on average 1.5818656229615133) internal successors, (16975), 10761 states have internal predecessors, (16975), 715 states have call successors, (715), 166 states have call predecessors, (715), 166 states have return successors, (715), 685 states have call predecessors, (715), 715 states have call successors, (715) [2024-11-28 04:35:13,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11613 states to 11613 states and 18405 transitions. [2024-11-28 04:35:13,246 INFO L78 Accepts]: Start accepts. Automaton has 11613 states and 18405 transitions. Word has length 441 [2024-11-28 04:35:13,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:35:13,246 INFO L471 AbstractCegarLoop]: Abstraction has 11613 states and 18405 transitions. [2024-11-28 04:35:13,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.642857142857142) internal successors, (219), 14 states have internal predecessors, (219), 3 states have call successors, (97), 2 states have call predecessors, (97), 4 states have return successors, (98), 3 states have call predecessors, (98), 3 states have call successors, (98) [2024-11-28 04:35:13,247 INFO L276 IsEmpty]: Start isEmpty. Operand 11613 states and 18405 transitions. [2024-11-28 04:35:13,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2024-11-28 04:35:13,252 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:35:13,252 INFO L218 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:35:13,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 04:35:13,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-28 04:35:13,453 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:35:13,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:35:13,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1524095958, now seen corresponding path program 1 times [2024-11-28 04:35:13,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:35:13,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419741836] [2024-11-28 04:35:13,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:35:13,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:35:15,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:35:15,819 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 189 proven. 189 refuted. 0 times theorem prover too weak. 7942 trivial. 0 not checked. [2024-11-28 04:35:15,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:35:15,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419741836] [2024-11-28 04:35:15,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419741836] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:35:15,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664622161] [2024-11-28 04:35:15,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:35:15,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:35:15,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:35:15,821 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:35:15,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:35:16,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:35:16,346 INFO L256 TraceCheckSpWp]: Trace formula consists of 1108 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-28 04:35:16,356 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:35:19,177 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 2344 proven. 54 refuted. 0 times theorem prover too weak. 5922 trivial. 0 not checked. [2024-11-28 04:35:19,177 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:35:19,904 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 162 proven. 30 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2024-11-28 04:35:19,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664622161] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:35:19,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:35:19,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 15, 10] total 28 [2024-11-28 04:35:19,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016814985] [2024-11-28 04:35:19,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:35:19,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-28 04:35:19,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:35:19,906 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-28 04:35:19,906 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=654, Unknown=0, NotChecked=0, Total=756 [2024-11-28 04:35:19,907 INFO L87 Difference]: Start difference. First operand 11613 states and 18405 transitions. Second operand has 28 states, 28 states have (on average 9.678571428571429) internal successors, (271), 27 states have internal predecessors, (271), 7 states have call successors, (180), 4 states have call predecessors, (180), 7 states have return successors, (181), 7 states have call predecessors, (181), 7 states have call successors, (181) [2024-11-28 04:35:48,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:35:48,213 INFO L93 Difference]: Finished difference Result 75629 states and 115523 transitions. [2024-11-28 04:35:48,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2024-11-28 04:35:48,214 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 9.678571428571429) internal successors, (271), 27 states have internal predecessors, (271), 7 states have call successors, (180), 4 states have call predecessors, (180), 7 states have return successors, (181), 7 states have call predecessors, (181), 7 states have call successors, (181) Word has length 442 [2024-11-28 04:35:48,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:35:48,321 INFO L225 Difference]: With dead ends: 75629 [2024-11-28 04:35:48,321 INFO L226 Difference]: Without dead ends: 64653 [2024-11-28 04:35:48,342 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1040 GetRequests, 875 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11225 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=3828, Invalid=23894, Unknown=0, NotChecked=0, Total=27722 [2024-11-28 04:35:48,343 INFO L435 NwaCegarLoop]: 418 mSDtfsCounter, 9933 mSDsluCounter, 5804 mSDsCounter, 0 mSdLazyCounter, 5231 mSolverCounterSat, 1961 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9935 SdHoareTripleChecker+Valid, 6222 SdHoareTripleChecker+Invalid, 7192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1961 IncrementalHoareTripleChecker+Valid, 5231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:35:48,344 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9935 Valid, 6222 Invalid, 7192 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1961 Valid, 5231 Invalid, 0 Unknown, 0 Unchecked, 11.6s Time] [2024-11-28 04:35:48,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64653 states. [2024-11-28 04:35:49,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64653 to 6071. [2024-11-28 04:35:49,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6071 states, 5226 states have (on average 1.5323383084577114) internal successors, (8008), 5240 states have internal predecessors, (8008), 639 states have call successors, (639), 205 states have call predecessors, (639), 205 states have return successors, (639), 625 states have call predecessors, (639), 639 states have call successors, (639) [2024-11-28 04:35:49,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6071 states to 6071 states and 9286 transitions. [2024-11-28 04:35:49,835 INFO L78 Accepts]: Start accepts. Automaton has 6071 states and 9286 transitions. Word has length 442 [2024-11-28 04:35:49,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:35:49,836 INFO L471 AbstractCegarLoop]: Abstraction has 6071 states and 9286 transitions. [2024-11-28 04:35:49,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 9.678571428571429) internal successors, (271), 27 states have internal predecessors, (271), 7 states have call successors, (180), 4 states have call predecessors, (180), 7 states have return successors, (181), 7 states have call predecessors, (181), 7 states have call successors, (181) [2024-11-28 04:35:49,836 INFO L276 IsEmpty]: Start isEmpty. Operand 6071 states and 9286 transitions. [2024-11-28 04:35:49,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2024-11-28 04:35:49,838 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:35:49,839 INFO L218 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:35:49,846 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 04:35:50,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-28 04:35:50,039 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:35:50,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:35:50,040 INFO L85 PathProgramCache]: Analyzing trace with hash -331020026, now seen corresponding path program 1 times [2024-11-28 04:35:50,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:35:50,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661019020] [2024-11-28 04:35:50,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:35:50,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:35:51,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:35:51,970 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 231 proven. 147 refuted. 0 times theorem prover too weak. 7942 trivial. 0 not checked. [2024-11-28 04:35:51,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:35:51,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661019020] [2024-11-28 04:35:51,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661019020] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:35:51,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471061033] [2024-11-28 04:35:51,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:35:51,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:35:51,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:35:51,972 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:35:51,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 04:35:52,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:35:52,470 INFO L256 TraceCheckSpWp]: Trace formula consists of 1105 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-28 04:35:52,475 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:35:53,940 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 5334 proven. 240 refuted. 0 times theorem prover too weak. 2746 trivial. 0 not checked. [2024-11-28 04:35:53,940 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:35:54,990 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 318 proven. 249 refuted. 0 times theorem prover too weak. 7753 trivial. 0 not checked. [2024-11-28 04:35:54,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471061033] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:35:54,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:35:54,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 12] total 25 [2024-11-28 04:35:54,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736024437] [2024-11-28 04:35:54,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:35:54,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-28 04:35:54,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:35:54,995 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-28 04:35:54,996 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=422, Unknown=0, NotChecked=0, Total=600 [2024-11-28 04:35:54,997 INFO L87 Difference]: Start difference. First operand 6071 states and 9286 transitions. Second operand has 25 states, 23 states have (on average 12.391304347826088) internal successors, (285), 23 states have internal predecessors, (285), 10 states have call successors, (134), 4 states have call predecessors, (134), 9 states have return successors, (135), 9 states have call predecessors, (135), 10 states have call successors, (135) [2024-11-28 04:35:58,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:35:58,569 INFO L93 Difference]: Finished difference Result 12727 states and 18621 transitions. [2024-11-28 04:35:58,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 04:35:58,569 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 12.391304347826088) internal successors, (285), 23 states have internal predecessors, (285), 10 states have call successors, (134), 4 states have call predecessors, (134), 9 states have return successors, (135), 9 states have call predecessors, (135), 10 states have call successors, (135) Word has length 442 [2024-11-28 04:35:58,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:35:58,586 INFO L225 Difference]: With dead ends: 12727 [2024-11-28 04:35:58,586 INFO L226 Difference]: Without dead ends: 8103 [2024-11-28 04:35:58,592 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 906 GetRequests, 869 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=487, Invalid=995, Unknown=0, NotChecked=0, Total=1482 [2024-11-28 04:35:58,592 INFO L435 NwaCegarLoop]: 468 mSDtfsCounter, 1366 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1426 SdHoareTripleChecker+Valid, 1943 SdHoareTripleChecker+Invalid, 1263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:35:58,592 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1426 Valid, 1943 Invalid, 1263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 954 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 04:35:58,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8103 states. [2024-11-28 04:35:59,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8103 to 6163. [2024-11-28 04:35:59,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6163 states, 5295 states have (on average 1.5208687440982058) internal successors, (8053), 5309 states have internal predecessors, (8053), 639 states have call successors, (639), 228 states have call predecessors, (639), 228 states have return successors, (639), 625 states have call predecessors, (639), 639 states have call successors, (639) [2024-11-28 04:35:59,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6163 states to 6163 states and 9331 transitions. [2024-11-28 04:35:59,540 INFO L78 Accepts]: Start accepts. Automaton has 6163 states and 9331 transitions. Word has length 442 [2024-11-28 04:35:59,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:35:59,541 INFO L471 AbstractCegarLoop]: Abstraction has 6163 states and 9331 transitions. [2024-11-28 04:35:59,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 12.391304347826088) internal successors, (285), 23 states have internal predecessors, (285), 10 states have call successors, (134), 4 states have call predecessors, (134), 9 states have return successors, (135), 9 states have call predecessors, (135), 10 states have call successors, (135) [2024-11-28 04:35:59,541 INFO L276 IsEmpty]: Start isEmpty. Operand 6163 states and 9331 transitions. [2024-11-28 04:35:59,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2024-11-28 04:35:59,545 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:35:59,545 INFO L218 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:35:59,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-28 04:35:59,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-28 04:35:59,745 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:35:59,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:35:59,746 INFO L85 PathProgramCache]: Analyzing trace with hash -884921815, now seen corresponding path program 1 times [2024-11-28 04:35:59,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:35:59,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956402319] [2024-11-28 04:35:59,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:35:59,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:36:02,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:36:02,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [491848356] [2024-11-28 04:36:02,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:02,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:36:02,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:36:02,569 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:36:02,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce405203-b43f-4321-9cd5-8786070db6d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process