./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/xcsp/aim-100-1-6-unsat-2.c --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_bda113fd-8afc-4f70-9452-57922fa2d48a/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda113fd-8afc-4f70-9452-57922fa2d48a/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_bda113fd-8afc-4f70-9452-57922fa2d48a/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda113fd-8afc-4f70-9452-57922fa2d48a/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/xcsp/aim-100-1-6-unsat-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda113fd-8afc-4f70-9452-57922fa2d48a/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_bda113fd-8afc-4f70-9452-57922fa2d48a/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 487c6acfd566f60f369a3039d23f6000726698077041216e5186513819c482df --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:14:56,357 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:14:56,453 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda113fd-8afc-4f70-9452-57922fa2d48a/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:14:56,458 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:14:56,458 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:14:56,499 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:14:56,500 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:14:56,501 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:14:56,501 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:14:56,502 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:14:56,502 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:14:56,503 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:14:56,503 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:14:56,503 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:14:56,504 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:14:56,504 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:14:56,504 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:14:56,504 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:14:56,504 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:14:56,505 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:14:56,505 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:14:56,505 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:14:56,505 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:14:56,505 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:14:56,505 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:14:56,505 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:14:56,506 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:14:56,506 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:14:56,506 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:14:56,506 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:14:56,506 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:14:56,506 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:14:56,507 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:14:56,507 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:14:56,507 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:14:56,508 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:14:56,508 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:14:56,508 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:14:56,508 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:14:56,508 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:14:56,508 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:14:56,508 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:14:56,509 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:14:56,509 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:14:56,509 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:14:56,509 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:14:56,509 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:14:56,509 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:14:56,509 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_bda113fd-8afc-4f70-9452-57922fa2d48a/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 -> 487c6acfd566f60f369a3039d23f6000726698077041216e5186513819c482df [2024-11-28 02:14:56,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:14:56,814 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:14:56,816 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:14:56,818 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:14:56,818 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:14:56,819 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda113fd-8afc-4f70-9452-57922fa2d48a/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/xcsp/aim-100-1-6-unsat-2.c [2024-11-28 02:14:59,707 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda113fd-8afc-4f70-9452-57922fa2d48a/bin/uautomizer-verify-aQ6SnzHsRB/data/666d5ac57/03fd8fecaf2c42e6b3875d8f2cd6586c/FLAG9ce9344aa [2024-11-28 02:15:00,139 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:15:00,139 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda113fd-8afc-4f70-9452-57922fa2d48a/sv-benchmarks/c/xcsp/aim-100-1-6-unsat-2.c [2024-11-28 02:15:00,158 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda113fd-8afc-4f70-9452-57922fa2d48a/bin/uautomizer-verify-aQ6SnzHsRB/data/666d5ac57/03fd8fecaf2c42e6b3875d8f2cd6586c/FLAG9ce9344aa [2024-11-28 02:15:00,297 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda113fd-8afc-4f70-9452-57922fa2d48a/bin/uautomizer-verify-aQ6SnzHsRB/data/666d5ac57/03fd8fecaf2c42e6b3875d8f2cd6586c [2024-11-28 02:15:00,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:15:00,300 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:15:00,303 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:15:00,304 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:15:00,309 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:15:00,310 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:15:00" (1/1) ... [2024-11-28 02:15:00,311 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7429213a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:15:00, skipping insertion in model container [2024-11-28 02:15:00,313 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:15:00" (1/1) ... [2024-11-28 02:15:00,354 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:15:00,744 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_bda113fd-8afc-4f70-9452-57922fa2d48a/sv-benchmarks/c/xcsp/aim-100-1-6-unsat-2.c[19008,19021] [2024-11-28 02:15:00,766 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:15:00,787 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:15:00,914 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_bda113fd-8afc-4f70-9452-57922fa2d48a/sv-benchmarks/c/xcsp/aim-100-1-6-unsat-2.c[19008,19021] [2024-11-28 02:15:00,922 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:15:00,936 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:15:00,936 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:15:00 WrapperNode [2024-11-28 02:15:00,936 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:15:00,937 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:15:00,938 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:15:00,938 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:15:00,944 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:15:00" (1/1) ... [2024-11-28 02:15:00,977 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:15:00" (1/1) ... [2024-11-28 02:15:01,254 INFO L138 Inliner]: procedures = 13, calls = 357, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 3490 [2024-11-28 02:15:01,254 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:15:01,255 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:15:01,256 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:15:01,256 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:15:01,265 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:15:00" (1/1) ... [2024-11-28 02:15:01,266 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:15:00" (1/1) ... [2024-11-28 02:15:01,296 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:15:00" (1/1) ... [2024-11-28 02:15:01,383 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 02:15:01,384 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:15:00" (1/1) ... [2024-11-28 02:15:01,384 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:15:00" (1/1) ... [2024-11-28 02:15:01,538 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:15:00" (1/1) ... [2024-11-28 02:15:01,545 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:15:00" (1/1) ... [2024-11-28 02:15:01,584 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:15:00" (1/1) ... [2024-11-28 02:15:01,626 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:15:00" (1/1) ... [2024-11-28 02:15:01,643 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:15:00" (1/1) ... [2024-11-28 02:15:01,684 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:15:01,686 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:15:01,686 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:15:01,687 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:15:01,688 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:15:00" (1/1) ... [2024-11-28 02:15:01,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:15:01,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda113fd-8afc-4f70-9452-57922fa2d48a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:15:01,720 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda113fd-8afc-4f70-9452-57922fa2d48a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:15:01,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda113fd-8afc-4f70-9452-57922fa2d48a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:15:01,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:15:01,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:15:01,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:15:01,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:15:01,755 INFO L130 BoogieDeclarations]: Found specification of procedure assume [2024-11-28 02:15:01,755 INFO L138 BoogieDeclarations]: Found implementation of procedure assume [2024-11-28 02:15:02,030 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:15:02,032 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:15:07,041 INFO L? ?]: Removed 839 outVars from TransFormulas that were not future-live. [2024-11-28 02:15:07,041 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:15:07,086 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:15:07,086 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 02:15:07,087 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:15:07 BoogieIcfgContainer [2024-11-28 02:15:07,087 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:15:07,090 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:15:07,090 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:15:07,095 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:15:07,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:15:00" (1/3) ... [2024-11-28 02:15:07,096 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61550cbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:15:07, skipping insertion in model container [2024-11-28 02:15:07,096 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:15:00" (2/3) ... [2024-11-28 02:15:07,096 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61550cbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:15:07, skipping insertion in model container [2024-11-28 02:15:07,097 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:15:07" (3/3) ... [2024-11-28 02:15:07,098 INFO L128 eAbstractionObserver]: Analyzing ICFG aim-100-1-6-unsat-2.c [2024-11-28 02:15:07,114 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:15:07,115 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aim-100-1-6-unsat-2.c that has 2 procedures, 1595 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-28 02:15:07,229 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:15:07,242 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;@ba36e9d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:15:07,242 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:15:07,251 INFO L276 IsEmpty]: Start isEmpty. Operand has 1595 states, 1242 states have (on average 1.5297906602254427) internal successors, (1900), 1243 states have internal predecessors, (1900), 350 states have call successors, (350), 1 states have call predecessors, (350), 1 states have return successors, (350), 350 states have call predecessors, (350), 350 states have call successors, (350) [2024-11-28 02:15:07,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2332 [2024-11-28 02:15:07,490 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:15:07,492 INFO L218 NwaCegarLoop]: trace histogram [350, 350, 350, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:15:07,493 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:15:07,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:15:07,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1318443682, now seen corresponding path program 1 times [2024-11-28 02:15:07,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:15:07,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799360294] [2024-11-28 02:15:07,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:15:07,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:15:07,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:15:09,980 INFO L134 CoverageAnalysis]: Checked inductivity of 244300 backedges. 0 proven. 698 refuted. 0 times theorem prover too weak. 243602 trivial. 0 not checked. [2024-11-28 02:15:09,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:15:09,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799360294] [2024-11-28 02:15:09,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799360294] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:15:09,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666230892] [2024-11-28 02:15:09,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:15:09,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:15:09,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda113fd-8afc-4f70-9452-57922fa2d48a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:15:09,987 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda113fd-8afc-4f70-9452-57922fa2d48a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:15:09,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda113fd-8afc-4f70-9452-57922fa2d48a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:15:11,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:15:11,060 INFO L256 TraceCheckSpWp]: Trace formula consists of 4510 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 02:15:11,132 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:15:11,393 INFO L134 CoverageAnalysis]: Checked inductivity of 244300 backedges. 698 proven. 0 refuted. 0 times theorem prover too weak. 243602 trivial. 0 not checked. [2024-11-28 02:15:11,394 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:15:11,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666230892] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:15:11,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:15:11,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 02:15:11,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136477950] [2024-11-28 02:15:11,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:15:11,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:15:11,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:15:11,427 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:15:11,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:15:11,434 INFO L87 Difference]: Start difference. First operand has 1595 states, 1242 states have (on average 1.5297906602254427) internal successors, (1900), 1243 states have internal predecessors, (1900), 350 states have call successors, (350), 1 states have call predecessors, (350), 1 states have return successors, (350), 350 states have call predecessors, (350), 350 states have call successors, (350) Second operand has 2 states, 2 states have (on average 293.0) internal successors, (586), 2 states have internal predecessors, (586), 2 states have call successors, (350), 2 states have call predecessors, (350), 1 states have return successors, (350), 1 states have call predecessors, (350), 2 states have call successors, (350) [2024-11-28 02:15:11,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:15:11,670 INFO L93 Difference]: Finished difference Result 3184 states and 5544 transitions. [2024-11-28 02:15:11,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:15:11,673 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 293.0) internal successors, (586), 2 states have internal predecessors, (586), 2 states have call successors, (350), 2 states have call predecessors, (350), 1 states have return successors, (350), 1 states have call predecessors, (350), 2 states have call successors, (350) Word has length 2331 [2024-11-28 02:15:11,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:15:11,706 INFO L225 Difference]: With dead ends: 3184 [2024-11-28 02:15:11,708 INFO L226 Difference]: Without dead ends: 1592 [2024-11-28 02:15:11,724 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2332 GetRequests, 2332 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 02:15:11,726 INFO L435 NwaCegarLoop]: 2596 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, 2596 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 02:15:11,730 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2596 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:15:11,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1592 states. [2024-11-28 02:15:12,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1592 to 1592. [2024-11-28 02:15:12,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1592 states, 1240 states have (on average 1.5290322580645161) internal successors, (1896), 1240 states have internal predecessors, (1896), 350 states have call successors, (350), 1 states have call predecessors, (350), 1 states have return successors, (350), 350 states have call predecessors, (350), 350 states have call successors, (350) [2024-11-28 02:15:12,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1592 states to 1592 states and 2596 transitions. [2024-11-28 02:15:12,119 INFO L78 Accepts]: Start accepts. Automaton has 1592 states and 2596 transitions. Word has length 2331 [2024-11-28 02:15:12,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:15:12,121 INFO L471 AbstractCegarLoop]: Abstraction has 1592 states and 2596 transitions. [2024-11-28 02:15:12,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 293.0) internal successors, (586), 2 states have internal predecessors, (586), 2 states have call successors, (350), 2 states have call predecessors, (350), 1 states have return successors, (350), 1 states have call predecessors, (350), 2 states have call successors, (350) [2024-11-28 02:15:12,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1592 states and 2596 transitions. [2024-11-28 02:15:12,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2332 [2024-11-28 02:15:12,202 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:15:12,203 INFO L218 NwaCegarLoop]: trace histogram [350, 350, 350, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:15:12,218 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda113fd-8afc-4f70-9452-57922fa2d48a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:15:12,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda113fd-8afc-4f70-9452-57922fa2d48a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 02:15:12,405 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:15:12,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:15:12,407 INFO L85 PathProgramCache]: Analyzing trace with hash 996406950, now seen corresponding path program 1 times [2024-11-28 02:15:12,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:15:12,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440506360] [2024-11-28 02:15:12,407 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:15:12,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:15:14,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:16:02,381 INFO L134 CoverageAnalysis]: Checked inductivity of 244300 backedges. 3636 proven. 17091 refuted. 0 times theorem prover too weak. 223573 trivial. 0 not checked. [2024-11-28 02:16:02,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:16:02,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440506360] [2024-11-28 02:16:02,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440506360] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:16:02,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019504856] [2024-11-28 02:16:02,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:16:02,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:16:02,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda113fd-8afc-4f70-9452-57922fa2d48a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:16:02,385 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda113fd-8afc-4f70-9452-57922fa2d48a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:16:02,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda113fd-8afc-4f70-9452-57922fa2d48a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:16:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:16:03,274 INFO L256 TraceCheckSpWp]: Trace formula consists of 4510 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-28 02:16:03,315 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:16:11,665 INFO L134 CoverageAnalysis]: Checked inductivity of 244300 backedges. 45216 proven. 4446 refuted. 0 times theorem prover too weak. 194638 trivial. 0 not checked. [2024-11-28 02:16:11,665 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:16:24,776 INFO L134 CoverageAnalysis]: Checked inductivity of 244300 backedges. 1116 proven. 5076 refuted. 0 times theorem prover too weak. 238108 trivial. 0 not checked. [2024-11-28 02:16:24,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019504856] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:16:24,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:16:24,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 13, 13] total 56 [2024-11-28 02:16:24,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503490104] [2024-11-28 02:16:24,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:16:24,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-28 02:16:24,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:16:24,790 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-28 02:16:24,791 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=2791, Unknown=0, NotChecked=0, Total=3080 [2024-11-28 02:16:24,793 INFO L87 Difference]: Start difference. First operand 1592 states and 2596 transitions. Second operand has 56 states, 34 states have (on average 44.6764705882353) internal successors, (1519), 41 states have internal predecessors, (1519), 50 states have call successors, (928), 2 states have call predecessors, (928), 3 states have return successors, (931), 43 states have call predecessors, (931), 50 states have call successors, (931) [2024-11-28 02:16:55,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:16:55,826 INFO L93 Difference]: Finished difference Result 7695 states and 12558 transitions. [2024-11-28 02:16:55,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-11-28 02:16:55,829 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 34 states have (on average 44.6764705882353) internal successors, (1519), 41 states have internal predecessors, (1519), 50 states have call successors, (928), 2 states have call predecessors, (928), 3 states have return successors, (931), 43 states have call predecessors, (931), 50 states have call successors, (931) Word has length 2331 [2024-11-28 02:16:55,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:16:55,868 INFO L225 Difference]: With dead ends: 7695 [2024-11-28 02:16:55,868 INFO L226 Difference]: Without dead ends: 6835 [2024-11-28 02:16:55,875 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4834 GetRequests, 4692 SyntacticMatches, 11 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5723 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=3037, Invalid=14519, Unknown=0, NotChecked=0, Total=17556 [2024-11-28 02:16:55,876 INFO L435 NwaCegarLoop]: 3753 mSDtfsCounter, 55792 mSDsluCounter, 66210 mSDsCounter, 0 mSdLazyCounter, 17170 mSolverCounterSat, 5706 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55809 SdHoareTripleChecker+Valid, 69963 SdHoareTripleChecker+Invalid, 22876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 5706 IncrementalHoareTripleChecker+Valid, 17170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:16:55,877 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55809 Valid, 69963 Invalid, 22876 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [5706 Valid, 17170 Invalid, 0 Unknown, 0 Unchecked, 21.8s Time] [2024-11-28 02:16:55,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6835 states. [2024-11-28 02:16:56,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6835 to 5810. [2024-11-28 02:16:56,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5810 states, 4967 states have (on average 1.5667404872156232) internal successors, (7782), 4967 states have internal predecessors, (7782), 841 states have call successors, (841), 1 states have call predecessors, (841), 1 states have return successors, (841), 841 states have call predecessors, (841), 841 states have call successors, (841) [2024-11-28 02:16:56,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5810 states to 5810 states and 9464 transitions. [2024-11-28 02:16:56,535 INFO L78 Accepts]: Start accepts. Automaton has 5810 states and 9464 transitions. Word has length 2331 [2024-11-28 02:16:56,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:16:56,545 INFO L471 AbstractCegarLoop]: Abstraction has 5810 states and 9464 transitions. [2024-11-28 02:16:56,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 34 states have (on average 44.6764705882353) internal successors, (1519), 41 states have internal predecessors, (1519), 50 states have call successors, (928), 2 states have call predecessors, (928), 3 states have return successors, (931), 43 states have call predecessors, (931), 50 states have call successors, (931) [2024-11-28 02:16:56,551 INFO L276 IsEmpty]: Start isEmpty. Operand 5810 states and 9464 transitions. [2024-11-28 02:16:56,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2334 [2024-11-28 02:16:56,613 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:16:56,614 INFO L218 NwaCegarLoop]: trace histogram [350, 350, 350, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:56,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda113fd-8afc-4f70-9452-57922fa2d48a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:16:56,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda113fd-8afc-4f70-9452-57922fa2d48a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-28 02:16:56,815 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:16:56,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:16:56,816 INFO L85 PathProgramCache]: Analyzing trace with hash 2015763984, now seen corresponding path program 1 times [2024-11-28 02:16:56,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:16:56,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108920202] [2024-11-28 02:16:56,817 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:16:56,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:16:57,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:17:02,546 INFO L134 CoverageAnalysis]: Checked inductivity of 244300 backedges. 240 proven. 1848 refuted. 0 times theorem prover too weak. 242212 trivial. 0 not checked. [2024-11-28 02:17:02,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:17:02,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108920202] [2024-11-28 02:17:02,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108920202] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:17:02,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952101367] [2024-11-28 02:17:02,547 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:02,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:17:02,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda113fd-8afc-4f70-9452-57922fa2d48a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:17:02,549 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda113fd-8afc-4f70-9452-57922fa2d48a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:17:02,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda113fd-8afc-4f70-9452-57922fa2d48a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:17:03,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:17:03,466 INFO L256 TraceCheckSpWp]: Trace formula consists of 4516 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 02:17:03,497 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:17:06,432 INFO L134 CoverageAnalysis]: Checked inductivity of 244300 backedges. 21616 proven. 1752 refuted. 0 times theorem prover too weak. 220932 trivial. 0 not checked. [2024-11-28 02:17:06,432 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:17:09,519 INFO L134 CoverageAnalysis]: Checked inductivity of 244300 backedges. 240 proven. 1848 refuted. 0 times theorem prover too weak. 242212 trivial. 0 not checked. [2024-11-28 02:17:09,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952101367] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:17:09,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:17:09,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2024-11-28 02:17:09,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464383476] [2024-11-28 02:17:09,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:17:09,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:17:09,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:17:09,525 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:17:09,525 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:17:09,526 INFO L87 Difference]: Start difference. First operand 5810 states and 9464 transitions. Second operand has 11 states, 10 states have (on average 87.2) internal successors, (872), 10 states have internal predecessors, (872), 8 states have call successors, (454), 2 states have call predecessors, (454), 3 states have return successors, (454), 8 states have call predecessors, (454), 8 states have call successors, (454) [2024-11-28 02:17:13,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:17:13,793 INFO L93 Difference]: Finished difference Result 20233 states and 32972 transitions. [2024-11-28 02:17:13,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 02:17:13,795 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 87.2) internal successors, (872), 10 states have internal predecessors, (872), 8 states have call successors, (454), 2 states have call predecessors, (454), 3 states have return successors, (454), 8 states have call predecessors, (454), 8 states have call successors, (454) Word has length 2333 [2024-11-28 02:17:13,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:17:13,876 INFO L225 Difference]: With dead ends: 20233 [2024-11-28 02:17:13,876 INFO L226 Difference]: Without dead ends: 19694 [2024-11-28 02:17:13,887 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4679 GetRequests, 4664 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-28 02:17:13,888 INFO L435 NwaCegarLoop]: 3664 mSDtfsCounter, 7718 mSDsluCounter, 18293 mSDsCounter, 0 mSdLazyCounter, 4585 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7810 SdHoareTripleChecker+Valid, 21957 SdHoareTripleChecker+Invalid, 4828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 4585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:17:13,888 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7810 Valid, 21957 Invalid, 4828 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [243 Valid, 4585 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-28 02:17:13,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19694 states. [2024-11-28 02:17:15,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19694 to 16722. [2024-11-28 02:17:15,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16722 states, 14602 states have (on average 1.5761539515134912) internal successors, (23015), 14602 states have internal predecessors, (23015), 2118 states have call successors, (2118), 1 states have call predecessors, (2118), 1 states have return successors, (2118), 2118 states have call predecessors, (2118), 2118 states have call successors, (2118) [2024-11-28 02:17:15,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16722 states to 16722 states and 27251 transitions. [2024-11-28 02:17:15,737 INFO L78 Accepts]: Start accepts. Automaton has 16722 states and 27251 transitions. Word has length 2333 [2024-11-28 02:17:15,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:17:15,743 INFO L471 AbstractCegarLoop]: Abstraction has 16722 states and 27251 transitions. [2024-11-28 02:17:15,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 87.2) internal successors, (872), 10 states have internal predecessors, (872), 8 states have call successors, (454), 2 states have call predecessors, (454), 3 states have return successors, (454), 8 states have call predecessors, (454), 8 states have call successors, (454) [2024-11-28 02:17:15,744 INFO L276 IsEmpty]: Start isEmpty. Operand 16722 states and 27251 transitions. [2024-11-28 02:17:15,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2334 [2024-11-28 02:17:15,844 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:17:15,845 INFO L218 NwaCegarLoop]: trace histogram [350, 350, 350, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:17:15,859 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda113fd-8afc-4f70-9452-57922fa2d48a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:17:16,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda113fd-8afc-4f70-9452-57922fa2d48a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:17:16,049 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:17:16,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:17:16,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1432506388, now seen corresponding path program 1 times [2024-11-28 02:17:16,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:17:16,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909619664] [2024-11-28 02:17:16,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:16,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:17:17,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:18:00,183 INFO L134 CoverageAnalysis]: Checked inductivity of 244300 backedges. 3414 proven. 19149 refuted. 0 times theorem prover too weak. 221737 trivial. 0 not checked. [2024-11-28 02:18:00,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:18:00,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909619664] [2024-11-28 02:18:00,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909619664] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:18:00,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401784842] [2024-11-28 02:18:00,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:18:00,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:18:00,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda113fd-8afc-4f70-9452-57922fa2d48a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:18:00,185 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda113fd-8afc-4f70-9452-57922fa2d48a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:18:00,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda113fd-8afc-4f70-9452-57922fa2d48a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:18:00,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:18:00,999 INFO L256 TraceCheckSpWp]: Trace formula consists of 4516 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-28 02:18:01,031 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:18:12,850 INFO L134 CoverageAnalysis]: Checked inductivity of 244300 backedges. 44388 proven. 7080 refuted. 0 times theorem prover too weak. 192832 trivial. 0 not checked. [2024-11-28 02:18:12,850 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:18:29,579 INFO L134 CoverageAnalysis]: Checked inductivity of 244300 backedges. 288 proven. 7920 refuted. 0 times theorem prover too weak. 236092 trivial. 0 not checked. [2024-11-28 02:18:29,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401784842] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:18:29,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:18:29,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 17, 17] total 72 [2024-11-28 02:18:29,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049723800] [2024-11-28 02:18:29,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:18:29,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-11-28 02:18:29,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:18:29,589 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-11-28 02:18:29,590 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=479, Invalid=4633, Unknown=0, NotChecked=0, Total=5112 [2024-11-28 02:18:29,592 INFO L87 Difference]: Start difference. First operand 16722 states and 27251 transitions. Second operand has 72 states, 47 states have (on average 30.93617021276596) internal successors, (1454), 53 states have internal predecessors, (1454), 67 states have call successors, (986), 2 states have call predecessors, (986), 3 states have return successors, (988), 61 states have call predecessors, (988), 67 states have call successors, (988) [2024-11-28 02:20:58,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:20:58,144 INFO L93 Difference]: Finished difference Result 191056 states and 312270 transitions. [2024-11-28 02:20:58,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2024-11-28 02:20:58,146 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 47 states have (on average 30.93617021276596) internal successors, (1454), 53 states have internal predecessors, (1454), 67 states have call successors, (986), 2 states have call predecessors, (986), 3 states have return successors, (988), 61 states have call predecessors, (988), 67 states have call successors, (988) Word has length 2333 [2024-11-28 02:20:58,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:20:58,780 INFO L225 Difference]: With dead ends: 191056 [2024-11-28 02:20:58,781 INFO L226 Difference]: Without dead ends: 188280 [2024-11-28 02:20:58,846 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4994 GetRequests, 4694 SyntacticMatches, 15 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26118 ImplicationChecksByTransitivity, 81.6s TimeCoverageRelationStatistics Valid=20487, Invalid=61595, Unknown=0, NotChecked=0, Total=82082 [2024-11-28 02:20:58,848 INFO L435 NwaCegarLoop]: 5798 mSDtfsCounter, 127439 mSDsluCounter, 116042 mSDsCounter, 0 mSdLazyCounter, 33829 mSolverCounterSat, 11483 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127454 SdHoareTripleChecker+Valid, 121840 SdHoareTripleChecker+Invalid, 45312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 11483 IncrementalHoareTripleChecker+Valid, 33829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:20:58,849 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127454 Valid, 121840 Invalid, 45312 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [11483 Valid, 33829 Invalid, 0 Unknown, 0 Unchecked, 48.0s Time] [2024-11-28 02:20:58,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188280 states. [2024-11-28 02:21:10,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188280 to 72313. [2024-11-28 02:21:10,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72313 states, 63855 states have (on average 1.5836034766267324) internal successors, (101121), 63855 states have internal predecessors, (101121), 8456 states have call successors, (8456), 1 states have call predecessors, (8456), 1 states have return successors, (8456), 8456 states have call predecessors, (8456), 8456 states have call successors, (8456) [2024-11-28 02:21:10,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72313 states to 72313 states and 118033 transitions. [2024-11-28 02:21:10,937 INFO L78 Accepts]: Start accepts. Automaton has 72313 states and 118033 transitions. Word has length 2333 [2024-11-28 02:21:10,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:21:10,940 INFO L471 AbstractCegarLoop]: Abstraction has 72313 states and 118033 transitions. [2024-11-28 02:21:10,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 47 states have (on average 30.93617021276596) internal successors, (1454), 53 states have internal predecessors, (1454), 67 states have call successors, (986), 2 states have call predecessors, (986), 3 states have return successors, (988), 61 states have call predecessors, (988), 67 states have call successors, (988) [2024-11-28 02:21:10,941 INFO L276 IsEmpty]: Start isEmpty. Operand 72313 states and 118033 transitions. [2024-11-28 02:21:11,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2334 [2024-11-28 02:21:11,154 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:21:11,155 INFO L218 NwaCegarLoop]: trace histogram [350, 350, 350, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:21:11,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda113fd-8afc-4f70-9452-57922fa2d48a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 02:21:11,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda113fd-8afc-4f70-9452-57922fa2d48a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:21:11,356 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:21:11,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:21:11,357 INFO L85 PathProgramCache]: Analyzing trace with hash -794039600, now seen corresponding path program 1 times [2024-11-28 02:21:11,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:21:11,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606068493] [2024-11-28 02:21:11,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:21:11,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:21:12,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:21:16,859 INFO L134 CoverageAnalysis]: Checked inductivity of 244300 backedges. 240 proven. 1848 refuted. 0 times theorem prover too weak. 242212 trivial. 0 not checked. [2024-11-28 02:21:16,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:21:16,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606068493] [2024-11-28 02:21:16,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606068493] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:21:16,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176288495] [2024-11-28 02:21:16,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:21:16,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:21:16,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda113fd-8afc-4f70-9452-57922fa2d48a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:21:16,862 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda113fd-8afc-4f70-9452-57922fa2d48a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:21:16,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda113fd-8afc-4f70-9452-57922fa2d48a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:21:17,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:21:17,699 INFO L256 TraceCheckSpWp]: Trace formula consists of 4516 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 02:21:17,731 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:21:20,883 INFO L134 CoverageAnalysis]: Checked inductivity of 244300 backedges. 21616 proven. 1752 refuted. 0 times theorem prover too weak. 220932 trivial. 0 not checked. [2024-11-28 02:21:20,883 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:21:24,047 INFO L134 CoverageAnalysis]: Checked inductivity of 244300 backedges. 240 proven. 1848 refuted. 0 times theorem prover too weak. 242212 trivial. 0 not checked. [2024-11-28 02:21:24,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176288495] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:21:24,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:21:24,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 12 [2024-11-28 02:21:24,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448556491] [2024-11-28 02:21:24,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:21:24,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 02:21:24,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:21:24,051 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 02:21:24,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:21:24,052 INFO L87 Difference]: Start difference. First operand 72313 states and 118033 transitions. Second operand has 12 states, 11 states have (on average 79.36363636363636) internal successors, (873), 11 states have internal predecessors, (873), 8 states have call successors, (454), 2 states have call predecessors, (454), 3 states have return successors, (454), 8 states have call predecessors, (454), 8 states have call successors, (454) [2024-11-28 02:21:35,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:21:35,128 INFO L93 Difference]: Finished difference Result 108982 states and 177726 transitions. [2024-11-28 02:21:35,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 02:21:35,129 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 79.36363636363636) internal successors, (873), 11 states have internal predecessors, (873), 8 states have call successors, (454), 2 states have call predecessors, (454), 3 states have return successors, (454), 8 states have call predecessors, (454), 8 states have call successors, (454) Word has length 2333 [2024-11-28 02:21:35,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:21:35,485 INFO L225 Difference]: With dead ends: 108982 [2024-11-28 02:21:35,486 INFO L226 Difference]: Without dead ends: 106994 [2024-11-28 02:21:35,519 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4678 GetRequests, 4663 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2024-11-28 02:21:35,520 INFO L435 NwaCegarLoop]: 3318 mSDtfsCounter, 7581 mSDsluCounter, 15046 mSDsCounter, 0 mSdLazyCounter, 3716 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7673 SdHoareTripleChecker+Valid, 18364 SdHoareTripleChecker+Invalid, 4000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 3716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:21:35,521 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7673 Valid, 18364 Invalid, 4000 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [284 Valid, 3716 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-28 02:21:35,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106994 states. [2024-11-28 02:21:48,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106994 to 104942. [2024-11-28 02:21:48,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104942 states, 92553 states have (on average 1.5819044223309888) internal successors, (146410), 92553 states have internal predecessors, (146410), 12387 states have call successors, (12387), 1 states have call predecessors, (12387), 1 states have return successors, (12387), 12387 states have call predecessors, (12387), 12387 states have call successors, (12387) [2024-11-28 02:21:49,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104942 states to 104942 states and 171184 transitions. [2024-11-28 02:21:49,540 INFO L78 Accepts]: Start accepts. Automaton has 104942 states and 171184 transitions. Word has length 2333 [2024-11-28 02:21:49,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:21:49,751 INFO L471 AbstractCegarLoop]: Abstraction has 104942 states and 171184 transitions. [2024-11-28 02:21:49,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 79.36363636363636) internal successors, (873), 11 states have internal predecessors, (873), 8 states have call successors, (454), 2 states have call predecessors, (454), 3 states have return successors, (454), 8 states have call predecessors, (454), 8 states have call successors, (454) [2024-11-28 02:21:49,752 INFO L276 IsEmpty]: Start isEmpty. Operand 104942 states and 171184 transitions. [2024-11-28 02:21:50,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2334 [2024-11-28 02:21:50,032 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:21:50,033 INFO L218 NwaCegarLoop]: trace histogram [350, 350, 350, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:21:50,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda113fd-8afc-4f70-9452-57922fa2d48a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 02:21:50,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda113fd-8afc-4f70-9452-57922fa2d48a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:21:50,234 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:21:50,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:21:50,235 INFO L85 PathProgramCache]: Analyzing trace with hash 403975194, now seen corresponding path program 1 times [2024-11-28 02:21:50,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:21:50,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452695120] [2024-11-28 02:21:50,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:21:50,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:21:50,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:21:55,635 INFO L134 CoverageAnalysis]: Checked inductivity of 244300 backedges. 972 proven. 1116 refuted. 0 times theorem prover too weak. 242212 trivial. 0 not checked. [2024-11-28 02:21:55,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:21:55,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452695120] [2024-11-28 02:21:55,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452695120] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:21:55,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614935421] [2024-11-28 02:21:55,636 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:21:55,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:21:55,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda113fd-8afc-4f70-9452-57922fa2d48a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:21:55,638 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda113fd-8afc-4f70-9452-57922fa2d48a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:21:55,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda113fd-8afc-4f70-9452-57922fa2d48a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:21:56,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:21:56,417 INFO L256 TraceCheckSpWp]: Trace formula consists of 4516 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 02:21:56,434 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:21:58,010 INFO L134 CoverageAnalysis]: Checked inductivity of 244300 backedges. 22348 proven. 1020 refuted. 0 times theorem prover too weak. 220932 trivial. 0 not checked. [2024-11-28 02:21:58,010 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:22:00,884 INFO L134 CoverageAnalysis]: Checked inductivity of 244300 backedges. 972 proven. 1116 refuted. 0 times theorem prover too weak. 242212 trivial. 0 not checked. [2024-11-28 02:22:00,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614935421] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:22:00,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:22:00,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 15 [2024-11-28 02:22:00,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997225105] [2024-11-28 02:22:00,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:22:00,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 02:22:00,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:22:00,891 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 02:22:00,891 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:22:00,891 INFO L87 Difference]: Start difference. First operand 104942 states and 171184 transitions. Second operand has 15 states, 14 states have (on average 42.785714285714285) internal successors, (599), 14 states have internal predecessors, (599), 5 states have call successors, (366), 2 states have call predecessors, (366), 3 states have return successors, (366), 5 states have call predecessors, (366), 5 states have call successors, (366) [2024-11-28 02:22:26,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:22:26,104 INFO L93 Difference]: Finished difference Result 307728 states and 502192 transitions. [2024-11-28 02:22:26,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 02:22:26,104 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 42.785714285714285) internal successors, (599), 14 states have internal predecessors, (599), 5 states have call successors, (366), 2 states have call predecessors, (366), 3 states have return successors, (366), 5 states have call predecessors, (366), 5 states have call successors, (366) Word has length 2333 [2024-11-28 02:22:26,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:22:26,976 INFO L225 Difference]: With dead ends: 307728 [2024-11-28 02:22:26,976 INFO L226 Difference]: Without dead ends: 267564 [2024-11-28 02:22:27,076 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4684 GetRequests, 4662 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2024-11-28 02:22:27,077 INFO L435 NwaCegarLoop]: 3712 mSDtfsCounter, 7175 mSDsluCounter, 27649 mSDsCounter, 0 mSdLazyCounter, 6216 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7457 SdHoareTripleChecker+Valid, 31361 SdHoareTripleChecker+Invalid, 6373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 6216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:22:27,077 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7457 Valid, 31361 Invalid, 6373 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [157 Valid, 6216 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-28 02:22:27,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267564 states. [2024-11-28 02:22:53,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267564 to 224840. [2024-11-28 02:22:53,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224840 states, 198602 states have (on average 1.5804573972064733) internal successors, (313882), 198602 states have internal predecessors, (313882), 26236 states have call successors, (26236), 1 states have call predecessors, (26236), 1 states have return successors, (26236), 26236 states have call predecessors, (26236), 26236 states have call successors, (26236) [2024-11-28 02:22:53,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224840 states to 224840 states and 366354 transitions.