./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-31.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0602a-55fd-42f1-a4b3-57275b9d31b3/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0602a-55fd-42f1-a4b3-57275b9d31b3/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_9fa0602a-55fd-42f1-a4b3-57275b9d31b3/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0602a-55fd-42f1-a4b3-57275b9d31b3/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-31.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0602a-55fd-42f1-a4b3-57275b9d31b3/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_9fa0602a-55fd-42f1-a4b3-57275b9d31b3/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 d39179efc28fccc153e100042d7b324f767a1fca5c4b8e10ed55a1e034da2fb7 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:54:54,693 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:54:54,791 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0602a-55fd-42f1-a4b3-57275b9d31b3/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:54:54,797 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:54:54,797 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:54:54,824 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:54:54,825 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:54:54,825 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:54:54,826 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:54:54,826 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:54:54,826 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:54:54,826 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:54:54,826 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:54:54,827 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:54:54,827 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:54:54,827 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:54:54,827 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:54:54,827 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:54:54,827 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:54:54,827 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:54:54,827 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:54:54,828 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:54:54,828 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:54:54,828 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:54:54,828 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:54:54,828 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:54:54,828 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:54:54,828 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:54:54,828 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:54:54,829 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:54:54,829 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:54:54,829 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:54:54,829 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:54:54,829 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:54:54,829 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:54:54,829 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:54:54,829 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:54:54,829 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:54:54,830 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:54:54,830 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:54:54,830 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:54:54,830 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:54:54,830 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:54:54,830 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:54:54,830 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:54:54,830 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:54:54,830 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:54:54,831 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:54:54,831 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_9fa0602a-55fd-42f1-a4b3-57275b9d31b3/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 -> d39179efc28fccc153e100042d7b324f767a1fca5c4b8e10ed55a1e034da2fb7 [2024-11-28 02:54:55,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:54:55,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:54:55,195 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:54:55,196 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:54:55,196 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:54:55,198 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0602a-55fd-42f1-a4b3-57275b9d31b3/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-31.i [2024-11-28 02:54:58,374 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0602a-55fd-42f1-a4b3-57275b9d31b3/bin/uautomizer-verify-aQ6SnzHsRB/data/704314305/0a57e5a776e14f9ab4e79ae7941e7b61/FLAG7f47b25c8 [2024-11-28 02:54:58,825 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:54:58,825 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0602a-55fd-42f1-a4b3-57275b9d31b3/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-31.i [2024-11-28 02:54:58,841 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0602a-55fd-42f1-a4b3-57275b9d31b3/bin/uautomizer-verify-aQ6SnzHsRB/data/704314305/0a57e5a776e14f9ab4e79ae7941e7b61/FLAG7f47b25c8 [2024-11-28 02:54:58,868 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0602a-55fd-42f1-a4b3-57275b9d31b3/bin/uautomizer-verify-aQ6SnzHsRB/data/704314305/0a57e5a776e14f9ab4e79ae7941e7b61 [2024-11-28 02:54:58,871 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:54:58,877 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:54:58,879 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:54:58,879 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:54:58,886 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:54:58,887 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:54:58" (1/1) ... [2024-11-28 02:54:58,889 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4489936a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:58, skipping insertion in model container [2024-11-28 02:54:58,890 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:54:58" (1/1) ... [2024-11-28 02:54:58,927 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:54:59,118 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_9fa0602a-55fd-42f1-a4b3-57275b9d31b3/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-31.i[919,932] [2024-11-28 02:54:59,276 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:54:59,292 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:54:59,306 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_9fa0602a-55fd-42f1-a4b3-57275b9d31b3/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-31.i[919,932] [2024-11-28 02:54:59,372 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:54:59,395 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:54:59,396 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:59 WrapperNode [2024-11-28 02:54:59,396 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:54:59,398 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:54:59,398 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:54:59,398 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:54:59,413 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:59" (1/1) ... [2024-11-28 02:54:59,441 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:59" (1/1) ... [2024-11-28 02:54:59,513 INFO L138 Inliner]: procedures = 26, calls = 67, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 286 [2024-11-28 02:54:59,513 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:54:59,514 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:54:59,514 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:54:59,514 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:54:59,526 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:59" (1/1) ... [2024-11-28 02:54:59,527 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:59" (1/1) ... [2024-11-28 02:54:59,532 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:59" (1/1) ... [2024-11-28 02:54:59,574 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 02:54:59,575 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:59" (1/1) ... [2024-11-28 02:54:59,575 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:59" (1/1) ... [2024-11-28 02:54:59,599 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:59" (1/1) ... [2024-11-28 02:54:59,601 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:59" (1/1) ... [2024-11-28 02:54:59,609 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:59" (1/1) ... [2024-11-28 02:54:59,615 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:59" (1/1) ... [2024-11-28 02:54:59,618 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:59" (1/1) ... [2024-11-28 02:54:59,626 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:54:59,627 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:54:59,627 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:54:59,627 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:54:59,628 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:59" (1/1) ... [2024-11-28 02:54:59,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:54:59,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0602a-55fd-42f1-a4b3-57275b9d31b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:54:59,672 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0602a-55fd-42f1-a4b3-57275b9d31b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:54:59,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0602a-55fd-42f1-a4b3-57275b9d31b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:54:59,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:54:59,713 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 02:54:59,713 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 02:54:59,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:54:59,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:54:59,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:54:59,841 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:54:59,843 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:55:00,562 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-28 02:55:00,563 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:55:00,582 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:55:00,582 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 02:55:00,586 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:55:00 BoogieIcfgContainer [2024-11-28 02:55:00,587 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:55:00,589 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:55:00,589 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:55:00,599 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:55:00,599 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:54:58" (1/3) ... [2024-11-28 02:55:00,600 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b57ee4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:55:00, skipping insertion in model container [2024-11-28 02:55:00,600 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:59" (2/3) ... [2024-11-28 02:55:00,600 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b57ee4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:55:00, skipping insertion in model container [2024-11-28 02:55:00,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:55:00" (3/3) ... [2024-11-28 02:55:00,603 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-cn_file-31.i [2024-11-28 02:55:00,624 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:55:00,626 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-ps-cn_file-31.i that has 2 procedures, 130 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 02:55:00,724 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:55:00,740 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;@338b573e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:55:00,740 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:55:00,745 INFO L276 IsEmpty]: Start isEmpty. Operand has 130 states, 73 states have (on average 1.36986301369863) internal successors, (100), 74 states have internal predecessors, (100), 54 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-28 02:55:00,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2024-11-28 02:55:00,770 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:55:00,771 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:55:00,772 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:55:00,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:55:00,778 INFO L85 PathProgramCache]: Analyzing trace with hash 586496167, now seen corresponding path program 1 times [2024-11-28 02:55:00,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:55:00,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498124957] [2024-11-28 02:55:00,789 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:55:00,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:55:00,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:55:01,483 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 5618 trivial. 0 not checked. [2024-11-28 02:55:01,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:55:01,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498124957] [2024-11-28 02:55:01,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498124957] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:55:01,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949182481] [2024-11-28 02:55:01,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:55:01,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:55:01,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0602a-55fd-42f1-a4b3-57275b9d31b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:55:01,488 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0602a-55fd-42f1-a4b3-57275b9d31b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:55:01,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0602a-55fd-42f1-a4b3-57275b9d31b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:55:01,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:55:01,955 INFO L256 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 02:55:01,988 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:55:02,092 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 5618 trivial. 0 not checked. [2024-11-28 02:55:02,092 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:55:02,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949182481] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:55:02,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:55:02,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 02:55:02,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125945038] [2024-11-28 02:55:02,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:55:02,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:55:02,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:55:02,130 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:55:02,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:55:02,134 INFO L87 Difference]: Start difference. First operand has 130 states, 73 states have (on average 1.36986301369863) internal successors, (100), 74 states have internal predecessors, (100), 54 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) Second operand has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 2 states have call successors, (54) [2024-11-28 02:55:02,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:55:02,204 INFO L93 Difference]: Finished difference Result 253 states and 464 transitions. [2024-11-28 02:55:02,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:55:02,207 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 2 states have call successors, (54) Word has length 324 [2024-11-28 02:55:02,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:55:02,217 INFO L225 Difference]: With dead ends: 253 [2024-11-28 02:55:02,218 INFO L226 Difference]: Without dead ends: 126 [2024-11-28 02:55:02,224 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 325 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 02:55:02,231 INFO L435 NwaCegarLoop]: 201 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, 201 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 02:55:02,232 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:55:02,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-28 02:55:02,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2024-11-28 02:55:02,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 70 states have internal predecessors, (93), 54 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-28 02:55:02,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 201 transitions. [2024-11-28 02:55:02,311 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 201 transitions. Word has length 324 [2024-11-28 02:55:02,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:55:02,313 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 201 transitions. [2024-11-28 02:55:02,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 2 states have call successors, (54) [2024-11-28 02:55:02,314 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 201 transitions. [2024-11-28 02:55:02,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2024-11-28 02:55:02,326 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:55:02,326 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:55:02,337 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0602a-55fd-42f1-a4b3-57275b9d31b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:55:02,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0602a-55fd-42f1-a4b3-57275b9d31b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 02:55:02,527 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:55:02,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:55:02,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1175332395, now seen corresponding path program 1 times [2024-11-28 02:55:02,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:55:02,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672968987] [2024-11-28 02:55:02,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:55:02,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:55:02,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:55:03,090 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2024-11-28 02:55:03,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:55:03,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672968987] [2024-11-28 02:55:03,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672968987] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:55:03,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:55:03,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:55:03,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208434725] [2024-11-28 02:55:03,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:55:03,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:55:03,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:55:03,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:55:03,096 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:55:03,097 INFO L87 Difference]: Start difference. First operand 126 states and 201 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2024-11-28 02:55:03,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:55:03,240 INFO L93 Difference]: Finished difference Result 371 states and 595 transitions. [2024-11-28 02:55:03,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:55:03,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) Word has length 324 [2024-11-28 02:55:03,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:55:03,249 INFO L225 Difference]: With dead ends: 371 [2024-11-28 02:55:03,249 INFO L226 Difference]: Without dead ends: 248 [2024-11-28 02:55:03,250 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:55:03,254 INFO L435 NwaCegarLoop]: 385 mSDtfsCounter, 189 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:55:03,255 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 575 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:55:03,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-11-28 02:55:03,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 130. [2024-11-28 02:55:03,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 74 states have (on average 1.3243243243243243) internal successors, (98), 74 states have internal predecessors, (98), 54 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-28 02:55:03,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 206 transitions. [2024-11-28 02:55:03,301 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 206 transitions. Word has length 324 [2024-11-28 02:55:03,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:55:03,304 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 206 transitions. [2024-11-28 02:55:03,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2024-11-28 02:55:03,304 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 206 transitions. [2024-11-28 02:55:03,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2024-11-28 02:55:03,316 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:55:03,317 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:55:03,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:55:03,317 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:55:03,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:55:03,318 INFO L85 PathProgramCache]: Analyzing trace with hash 365985769, now seen corresponding path program 1 times [2024-11-28 02:55:03,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:55:03,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780702068] [2024-11-28 02:55:03,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:55:03,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:55:03,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:55:04,713 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2024-11-28 02:55:04,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:55:04,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780702068] [2024-11-28 02:55:04,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780702068] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:55:04,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:55:04,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:55:04,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417300634] [2024-11-28 02:55:04,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:55:04,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:55:04,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:55:04,723 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:55:04,724 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:55:04,724 INFO L87 Difference]: Start difference. First operand 130 states and 206 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2024-11-28 02:55:05,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:55:05,119 INFO L93 Difference]: Finished difference Result 385 states and 614 transitions. [2024-11-28 02:55:05,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:55:05,120 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) Word has length 324 [2024-11-28 02:55:05,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:55:05,125 INFO L225 Difference]: With dead ends: 385 [2024-11-28 02:55:05,125 INFO L226 Difference]: Without dead ends: 258 [2024-11-28 02:55:05,126 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:55:05,127 INFO L435 NwaCegarLoop]: 200 mSDtfsCounter, 107 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:55:05,127 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 477 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:55:05,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-28 02:55:05,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 255. [2024-11-28 02:55:05,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 144 states have (on average 1.3263888888888888) internal successors, (191), 144 states have internal predecessors, (191), 108 states have call successors, (108), 2 states have call predecessors, (108), 2 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2024-11-28 02:55:05,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 407 transitions. [2024-11-28 02:55:05,175 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 407 transitions. Word has length 324 [2024-11-28 02:55:05,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:55:05,176 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 407 transitions. [2024-11-28 02:55:05,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2024-11-28 02:55:05,176 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 407 transitions. [2024-11-28 02:55:05,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2024-11-28 02:55:05,182 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:55:05,182 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:55:05,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:55:05,183 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:55:05,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:55:05,183 INFO L85 PathProgramCache]: Analyzing trace with hash -913877909, now seen corresponding path program 1 times [2024-11-28 02:55:05,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:55:05,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995657585] [2024-11-28 02:55:05,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:55:05,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:55:05,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat