./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-8.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcaa823-a2ea-4cd8-9d33-99ec8481eb2a/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcaa823-a2ea-4cd8-9d33-99ec8481eb2a/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcaa823-a2ea-4cd8-9d33-99ec8481eb2a/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcaa823-a2ea-4cd8-9d33-99ec8481eb2a/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcaa823-a2ea-4cd8-9d33-99ec8481eb2a/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcaa823-a2ea-4cd8-9d33-99ec8481eb2a/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3a780e8c08e2ad68e979e131bc4f4540ca41356fe45ef323c559a838b7c9745a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 18:36:01,618 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 18:36:01,713 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcaa823-a2ea-4cd8-9d33-99ec8481eb2a/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 18:36:01,721 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 18:36:01,724 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 18:36:01,761 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 18:36:01,762 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 18:36:01,762 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 18:36:01,762 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 18:36:01,762 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 18:36:01,763 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 18:36:01,763 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 18:36:01,763 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 18:36:01,763 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 18:36:01,763 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 18:36:01,763 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 18:36:01,763 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 18:36:01,764 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 18:36:01,764 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 18:36:01,764 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 18:36:01,764 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 18:36:01,764 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 18:36:01,764 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 18:36:01,764 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 18:36:01,764 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 18:36:01,764 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 18:36:01,765 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 18:36:01,765 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 18:36:01,765 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 18:36:01,765 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:36:01,765 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:36:01,765 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:36:01,765 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:36:01,765 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 18:36:01,765 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:36:01,766 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:36:01,766 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:36:01,766 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:36:01,766 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 18:36:01,766 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 18:36:01,766 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 18:36:01,768 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 18:36:01,768 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 18:36:01,768 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 18:36:01,768 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 18:36:01,769 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 18:36:01,769 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 18:36:01,769 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 18:36:01,769 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_3dcaa823-a2ea-4cd8-9d33-99ec8481eb2a/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a780e8c08e2ad68e979e131bc4f4540ca41356fe45ef323c559a838b7c9745a [2024-11-23 18:36:02,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 18:36:02,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 18:36:02,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 18:36:02,104 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 18:36:02,105 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 18:36:02,107 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcaa823-a2ea-4cd8-9d33-99ec8481eb2a/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-8.i [2024-11-23 18:36:05,146 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcaa823-a2ea-4cd8-9d33-99ec8481eb2a/bin/uautomizer-verify-LYvppIcaGC/data/3e58f400f/d805c5a409a34045a5d149e225f71513/FLAGc9911799a [2024-11-23 18:36:05,454 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 18:36:05,455 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcaa823-a2ea-4cd8-9d33-99ec8481eb2a/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-8.i [2024-11-23 18:36:05,471 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcaa823-a2ea-4cd8-9d33-99ec8481eb2a/bin/uautomizer-verify-LYvppIcaGC/data/3e58f400f/d805c5a409a34045a5d149e225f71513/FLAGc9911799a [2024-11-23 18:36:05,487 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcaa823-a2ea-4cd8-9d33-99ec8481eb2a/bin/uautomizer-verify-LYvppIcaGC/data/3e58f400f/d805c5a409a34045a5d149e225f71513 [2024-11-23 18:36:05,490 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 18:36:05,492 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 18:36:05,493 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 18:36:05,493 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 18:36:05,498 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 18:36:05,499 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:36:05" (1/1) ... [2024-11-23 18:36:05,500 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a1e95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:36:05, skipping insertion in model container [2024-11-23 18:36:05,501 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:36:05" (1/1) ... [2024-11-23 18:36:05,537 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 18:36:05,715 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_3dcaa823-a2ea-4cd8-9d33-99ec8481eb2a/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-8.i[915,928] [2024-11-23 18:36:05,994 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:36:06,024 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 18:36:06,037 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_3dcaa823-a2ea-4cd8-9d33-99ec8481eb2a/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-8.i[915,928] [2024-11-23 18:36:06,153 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:36:06,176 INFO L204 MainTranslator]: Completed translation [2024-11-23 18:36:06,176 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:36:06 WrapperNode [2024-11-23 18:36:06,177 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 18:36:06,178 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 18:36:06,178 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 18:36:06,178 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 18:36:06,185 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:36:06" (1/1) ... [2024-11-23 18:36:06,206 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:36:06" (1/1) ... [2024-11-23 18:36:06,315 INFO L138 Inliner]: procedures = 26, calls = 147, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 939 [2024-11-23 18:36:06,316 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 18:36:06,316 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 18:36:06,316 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 18:36:06,317 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 18:36:06,326 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:36:06" (1/1) ... [2024-11-23 18:36:06,326 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:36:06" (1/1) ... [2024-11-23 18:36:06,337 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:36:06" (1/1) ... [2024-11-23 18:36:06,423 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-23 18:36:06,423 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:36:06" (1/1) ... [2024-11-23 18:36:06,423 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:36:06" (1/1) ... [2024-11-23 18:36:06,470 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:36:06" (1/1) ... [2024-11-23 18:36:06,480 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:36:06" (1/1) ... [2024-11-23 18:36:06,492 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:36:06" (1/1) ... [2024-11-23 18:36:06,505 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:36:06" (1/1) ... [2024-11-23 18:36:06,514 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:36:06" (1/1) ... [2024-11-23 18:36:06,534 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 18:36:06,535 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 18:36:06,535 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 18:36:06,535 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 18:36:06,536 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:36:06" (1/1) ... [2024-11-23 18:36:06,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:36:06,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcaa823-a2ea-4cd8-9d33-99ec8481eb2a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:36:06,573 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcaa823-a2ea-4cd8-9d33-99ec8481eb2a/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 18:36:06,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcaa823-a2ea-4cd8-9d33-99ec8481eb2a/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 18:36:06,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 18:36:06,602 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 18:36:06,602 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 18:36:06,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 18:36:06,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 18:36:06,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 18:36:06,769 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 18:36:06,771 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 18:36:08,771 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2024-11-23 18:36:08,772 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 18:36:08,803 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 18:36:08,803 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 18:36:08,806 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:36:08 BoogieIcfgContainer [2024-11-23 18:36:08,806 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 18:36:08,809 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 18:36:08,809 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 18:36:08,815 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 18:36:08,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:36:05" (1/3) ... [2024-11-23 18:36:08,816 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d52f059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:36:08, skipping insertion in model container [2024-11-23 18:36:08,816 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:36:06" (2/3) ... [2024-11-23 18:36:08,816 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d52f059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:36:08, skipping insertion in model container [2024-11-23 18:36:08,816 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:36:08" (3/3) ... [2024-11-23 18:36:08,817 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-8.i [2024-11-23 18:36:08,833 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 18:36:08,836 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-8.i that has 2 procedures, 396 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 18:36:08,953 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 18:36:08,967 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;@3f0054bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 18:36:08,968 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 18:36:08,973 INFO L276 IsEmpty]: Start isEmpty. Operand has 396 states, 259 states have (on average 1.5907335907335907) internal successors, (412), 260 states have internal predecessors, (412), 134 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 134 states have call predecessors, (134), 134 states have call successors, (134) [2024-11-23 18:36:09,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 833 [2024-11-23 18:36:09,023 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:36:09,025 INFO L218 NwaCegarLoop]: trace histogram [134, 134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:36:09,025 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:36:09,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:36:09,034 INFO L85 PathProgramCache]: Analyzing trace with hash -586283142, now seen corresponding path program 1 times [2024-11-23 18:36:09,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:36:09,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987014014] [2024-11-23 18:36:09,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:36:09,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:36:09,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:36:10,194 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 0 proven. 266 refuted. 0 times theorem prover too weak. 35378 trivial. 0 not checked. [2024-11-23 18:36:10,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:36:10,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987014014] [2024-11-23 18:36:10,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987014014] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:36:10,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026559133] [2024-11-23 18:36:10,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:36:10,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:36:10,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcaa823-a2ea-4cd8-9d33-99ec8481eb2a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:36:10,203 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcaa823-a2ea-4cd8-9d33-99ec8481eb2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:36:10,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcaa823-a2ea-4cd8-9d33-99ec8481eb2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 18:36:10,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:36:10,901 INFO L256 TraceCheckSpWp]: Trace formula consists of 1850 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 18:36:10,934 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:36:11,049 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 266 proven. 0 refuted. 0 times theorem prover too weak. 35378 trivial. 0 not checked. [2024-11-23 18:36:11,050 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:36:11,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026559133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:36:11,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:36:11,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-23 18:36:11,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551739598] [2024-11-23 18:36:11,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:36:11,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 18:36:11,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:36:11,091 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 18:36:11,092 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 18:36:11,098 INFO L87 Difference]: Start difference. First operand has 396 states, 259 states have (on average 1.5907335907335907) internal successors, (412), 260 states have internal predecessors, (412), 134 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 134 states have call predecessors, (134), 134 states have call successors, (134) Second operand has 2 states, 2 states have (on average 83.5) internal successors, (167), 2 states have internal predecessors, (167), 2 states have call successors, (134), 2 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 2 states have call successors, (134) [2024-11-23 18:36:11,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:36:11,189 INFO L93 Difference]: Finished difference Result 785 states and 1488 transitions. [2024-11-23 18:36:11,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 18:36:11,193 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 83.5) internal successors, (167), 2 states have internal predecessors, (167), 2 states have call successors, (134), 2 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 2 states have call successors, (134) Word has length 832 [2024-11-23 18:36:11,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:36:11,205 INFO L225 Difference]: With dead ends: 785 [2024-11-23 18:36:11,205 INFO L226 Difference]: Without dead ends: 392 [2024-11-23 18:36:11,216 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 833 GetRequests, 833 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 18:36:11,219 INFO L435 NwaCegarLoop]: 669 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, 669 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 [2024-11-23 18:36:11,220 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:36:11,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2024-11-23 18:36:11,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2024-11-23 18:36:11,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 256 states have (on average 1.56640625) internal successors, (401), 256 states have internal predecessors, (401), 134 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 134 states have call predecessors, (134), 134 states have call successors, (134) [2024-11-23 18:36:11,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 669 transitions. [2024-11-23 18:36:11,372 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 669 transitions. Word has length 832 [2024-11-23 18:36:11,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:36:11,375 INFO L471 AbstractCegarLoop]: Abstraction has 392 states and 669 transitions. [2024-11-23 18:36:11,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 83.5) internal successors, (167), 2 states have internal predecessors, (167), 2 states have call successors, (134), 2 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 2 states have call successors, (134) [2024-11-23 18:36:11,376 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 669 transitions. [2024-11-23 18:36:11,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 834 [2024-11-23 18:36:11,425 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:36:11,425 INFO L218 NwaCegarLoop]: trace histogram [134, 134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:36:11,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcaa823-a2ea-4cd8-9d33-99ec8481eb2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 18:36:11,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcaa823-a2ea-4cd8-9d33-99ec8481eb2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-23 18:36:11,626 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:36:11,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:36:11,628 INFO L85 PathProgramCache]: Analyzing trace with hash 369902146, now seen corresponding path program 1 times [2024-11-23 18:36:11,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:36:11,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492663839] [2024-11-23 18:36:11,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:36:11,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:36:11,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:36:13,026 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35644 trivial. 0 not checked. [2024-11-23 18:36:13,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:36:13,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492663839] [2024-11-23 18:36:13,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492663839] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:36:13,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:36:13,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:36:13,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477226609] [2024-11-23 18:36:13,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:36:13,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:36:13,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:36:13,034 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:36:13,034 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:36:13,035 INFO L87 Difference]: Start difference. First operand 392 states and 669 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) [2024-11-23 18:36:13,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:36:13,192 INFO L93 Difference]: Finished difference Result 1010 states and 1734 transitions. [2024-11-23 18:36:13,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:36:13,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) Word has length 833 [2024-11-23 18:36:13,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:36:13,203 INFO L225 Difference]: With dead ends: 1010 [2024-11-23 18:36:13,207 INFO L226 Difference]: Without dead ends: 621 [2024-11-23 18:36:13,209 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:36:13,213 INFO L435 NwaCegarLoop]: 663 mSDtfsCounter, 397 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 1313 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:36:13,213 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 1313 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:36:13,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2024-11-23 18:36:13,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 618. [2024-11-23 18:36:13,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 440 states have (on average 1.6227272727272728) internal successors, (714), 441 states have internal predecessors, (714), 175 states have call successors, (175), 2 states have call predecessors, (175), 2 states have return successors, (175), 174 states have call predecessors, (175), 175 states have call successors, (175) [2024-11-23 18:36:13,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 1064 transitions. [2024-11-23 18:36:13,376 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 1064 transitions. Word has length 833 [2024-11-23 18:36:13,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:36:13,380 INFO L471 AbstractCegarLoop]: Abstraction has 618 states and 1064 transitions. [2024-11-23 18:36:13,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) [2024-11-23 18:36:13,381 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 1064 transitions. [2024-11-23 18:36:13,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 834 [2024-11-23 18:36:13,423 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:36:13,423 INFO L218 NwaCegarLoop]: trace histogram [134, 134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:36:13,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 18:36:13,424 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:36:13,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:36:13,425 INFO L85 PathProgramCache]: Analyzing trace with hash 391287358, now seen corresponding path program 1 times [2024-11-23 18:36:13,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:36:13,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824425429] [2024-11-23 18:36:13,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:36:13,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:36:13,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:36:14,157 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35644 trivial. 0 not checked. [2024-11-23 18:36:14,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:36:14,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824425429] [2024-11-23 18:36:14,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824425429] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:36:14,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:36:14,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:36:14,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823270727] [2024-11-23 18:36:14,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:36:14,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:36:14,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:36:14,164 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:36:14,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:36:14,165 INFO L87 Difference]: Start difference. First operand 618 states and 1064 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) [2024-11-23 18:36:14,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:36:14,330 INFO L93 Difference]: Finished difference Result 1842 states and 3174 transitions. [2024-11-23 18:36:14,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:36:14,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) Word has length 833 [2024-11-23 18:36:14,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:36:14,343 INFO L225 Difference]: With dead ends: 1842 [2024-11-23 18:36:14,343 INFO L226 Difference]: Without dead ends: 1227 [2024-11-23 18:36:14,346 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:36:14,346 INFO L435 NwaCegarLoop]: 1070 mSDtfsCounter, 607 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 1724 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:36:14,347 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [607 Valid, 1724 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:36:14,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2024-11-23 18:36:14,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 1224. [2024-11-23 18:36:14,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 869 states have (on average 1.6110471806674338) internal successors, (1400), 871 states have internal predecessors, (1400), 350 states have call successors, (350), 4 states have call predecessors, (350), 4 states have return successors, (350), 348 states have call predecessors, (350), 350 states have call successors, (350) [2024-11-23 18:36:14,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 2100 transitions. [2024-11-23 18:36:14,627 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 2100 transitions. Word has length 833 [2024-11-23 18:36:14,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:36:14,629 INFO L471 AbstractCegarLoop]: Abstraction has 1224 states and 2100 transitions. [2024-11-23 18:36:14,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) [2024-11-23 18:36:14,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 2100 transitions. [2024-11-23 18:36:14,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 834 [2024-11-23 18:36:14,639 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:36:14,639 INFO L218 NwaCegarLoop]: trace histogram [134, 134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:36:14,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 18:36:14,640 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:36:14,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:36:14,641 INFO L85 PathProgramCache]: Analyzing trace with hash 453326972, now seen corresponding path program 1 times [2024-11-23 18:36:14,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:36:14,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066844991] [2024-11-23 18:36:14,641 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:36:14,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:36:14,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:36:15,184 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35644 trivial. 0 not checked. [2024-11-23 18:36:15,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:36:15,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066844991] [2024-11-23 18:36:15,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066844991] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:36:15,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:36:15,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:36:15,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018702091] [2024-11-23 18:36:15,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:36:15,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:36:15,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:36:15,211 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:36:15,211 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:36:15,211 INFO L87 Difference]: Start difference. First operand 1224 states and 2100 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) [2024-11-23 18:36:15,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:36:15,442 INFO L93 Difference]: Finished difference Result 3666 states and 6294 transitions. [2024-11-23 18:36:15,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:36:15,443 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) Word has length 833 [2024-11-23 18:36:15,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:36:15,468 INFO L225 Difference]: With dead ends: 3666 [2024-11-23 18:36:15,469 INFO L226 Difference]: Without dead ends: 2445 [2024-11-23 18:36:15,475 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:36:15,477 INFO L435 NwaCegarLoop]: 1276 mSDtfsCounter, 657 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 1937 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:36:15,478 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 1937 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:36:15,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2445 states. [2024-11-23 18:36:15,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2445 to 2443. [2024-11-23 18:36:15,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2443 states, 1734 states have (on average 1.6055363321799307) internal successors, (2784), 1738 states have internal predecessors, (2784), 700 states have call successors, (700), 8 states have call predecessors, (700), 8 states have return successors, (700), 696 states have call predecessors, (700), 700 states have call successors, (700) [2024-11-23 18:36:15,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2443 states to 2443 states and 4184 transitions. [2024-11-23 18:36:15,982 INFO L78 Accepts]: Start accepts. Automaton has 2443 states and 4184 transitions. Word has length 833 [2024-11-23 18:36:15,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:36:15,984 INFO L471 AbstractCegarLoop]: Abstraction has 2443 states and 4184 transitions. [2024-11-23 18:36:15,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) [2024-11-23 18:36:15,985 INFO L276 IsEmpty]: Start isEmpty. Operand 2443 states and 4184 transitions. [2024-11-23 18:36:15,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 834 [2024-11-23 18:36:15,996 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:36:15,997 INFO L218 NwaCegarLoop]: trace histogram [134, 134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:36:15,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 18:36:15,997 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:36:15,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:36:15,998 INFO L85 PathProgramCache]: Analyzing trace with hash 876028798, now seen corresponding path program 1 times [2024-11-23 18:36:15,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:36:15,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488397426] [2024-11-23 18:36:15,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:36:15,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:36:16,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:36:16,838 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35644 trivial. 0 not checked. [2024-11-23 18:36:16,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:36:16,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488397426] [2024-11-23 18:36:16,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488397426] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:36:16,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:36:16,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 18:36:16,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808405138] [2024-11-23 18:36:16,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:36:16,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:36:16,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:36:16,842 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:36:16,842 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:36:16,843 INFO L87 Difference]: Start difference. First operand 2443 states and 4184 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) [2024-11-23 18:36:17,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:36:17,119 INFO L93 Difference]: Finished difference Result 4887 states and 8370 transitions. [2024-11-23 18:36:17,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:36:17,119 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) Word has length 833 [2024-11-23 18:36:17,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:36:17,138 INFO L225 Difference]: With dead ends: 4887 [2024-11-23 18:36:17,139 INFO L226 Difference]: Without dead ends: 2447 [2024-11-23 18:36:17,148 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:36:17,149 INFO L435 NwaCegarLoop]: 1069 mSDtfsCounter, 620 mSDsluCounter, 1716 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 2785 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:36:17,149 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [620 Valid, 2785 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:36:17,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2447 states. [2024-11-23 18:36:17,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2447 to 2443. [2024-11-23 18:36:17,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2443 states, 1734 states have (on average 1.6032295271049597) internal successors, (2780), 1738 states have internal predecessors, (2780), 700 states have call successors, (700), 8 states have call predecessors, (700), 8 states have return successors, (700), 696 states have call predecessors, (700), 700 states have call successors, (700) [2024-11-23 18:36:17,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2443 states to 2443 states and 4180 transitions. [2024-11-23 18:36:17,624 INFO L78 Accepts]: Start accepts. Automaton has 2443 states and 4180 transitions. Word has length 833 [2024-11-23 18:36:17,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:36:17,626 INFO L471 AbstractCegarLoop]: Abstraction has 2443 states and 4180 transitions. [2024-11-23 18:36:17,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) [2024-11-23 18:36:17,627 INFO L276 IsEmpty]: Start isEmpty. Operand 2443 states and 4180 transitions. [2024-11-23 18:36:17,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 836 [2024-11-23 18:36:17,642 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:36:17,643 INFO L218 NwaCegarLoop]: trace histogram [134, 134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:36:17,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 18:36:17,643 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:36:17,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:36:17,645 INFO L85 PathProgramCache]: Analyzing trace with hash 993371882, now seen corresponding path program 1 times [2024-11-23 18:36:17,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:36:17,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837774070] [2024-11-23 18:36:17,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:36:17,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:36:17,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:36:18,601 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35644 trivial. 0 not checked. [2024-11-23 18:36:18,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:36:18,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837774070] [2024-11-23 18:36:18,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837774070] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:36:18,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:36:18,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:36:18,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730264479] [2024-11-23 18:36:18,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:36:18,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:36:18,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:36:18,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:36:18,609 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:36:18,609 INFO L87 Difference]: Start difference. First operand 2443 states and 4180 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 2 states have call predecessors, (134), 2 states have call successors, (134) [2024-11-23 18:36:20,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:36:20,093 INFO L93 Difference]: Finished difference Result 8945 states and 15319 transitions. [2024-11-23 18:36:20,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:36:20,094 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 2 states have call predecessors, (134), 2 states have call successors, (134) Word has length 835 [2024-11-23 18:36:20,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:36:20,135 INFO L225 Difference]: With dead ends: 8945 [2024-11-23 18:36:20,135 INFO L226 Difference]: Without dead ends: 6505 [2024-11-23 18:36:20,147 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:36:20,147 INFO L435 NwaCegarLoop]: 802 mSDtfsCounter, 1581 mSDsluCounter, 1214 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1581 SdHoareTripleChecker+Valid, 2016 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:36:20,148 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1581 Valid, 2016 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-23 18:36:20,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6505 states. [2024-11-23 18:36:21,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6505 to 6493. [2024-11-23 18:36:21,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6493 states, 4788 states have (on average 1.6198830409356726) internal successors, (7756), 4804 states have internal predecessors, (7756), 1680 states have call successors, (1680), 24 states have call predecessors, (1680), 24 states have return successors, (1680), 1664 states have call predecessors, (1680), 1680 states have call successors, (1680) [2024-11-23 18:36:21,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6493 states to 6493 states and 11116 transitions. [2024-11-23 18:36:21,231 INFO L78 Accepts]: Start accepts. Automaton has 6493 states and 11116 transitions. Word has length 835 [2024-11-23 18:36:21,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:36:21,233 INFO L471 AbstractCegarLoop]: Abstraction has 6493 states and 11116 transitions. [2024-11-23 18:36:21,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 2 states have call predecessors, (134), 2 states have call successors, (134) [2024-11-23 18:36:21,237 INFO L276 IsEmpty]: Start isEmpty. Operand 6493 states and 11116 transitions. [2024-11-23 18:36:21,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 836 [2024-11-23 18:36:21,253 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:36:21,254 INFO L218 NwaCegarLoop]: trace histogram [134, 134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:36:21,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 18:36:21,254 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:36:21,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:36:21,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1392402012, now seen corresponding path program 1 times [2024-11-23 18:36:21,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:36:21,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762837264] [2024-11-23 18:36:21,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:36:21,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:36:21,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:36:22,644 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35644 trivial. 0 not checked. [2024-11-23 18:36:22,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:36:22,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762837264] [2024-11-23 18:36:22,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762837264] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:36:22,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:36:22,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 18:36:22,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47217208] [2024-11-23 18:36:22,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:36:22,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:36:22,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:36:22,647 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:36:22,647 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:36:22,648 INFO L87 Difference]: Start difference. First operand 6493 states and 11116 transitions. Second operand has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) [2024-11-23 18:36:24,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:36:24,199 INFO L93 Difference]: Finished difference Result 19497 states and 33390 transitions. [2024-11-23 18:36:24,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:36:24,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) Word has length 835 [2024-11-23 18:36:24,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:36:24,311 INFO L225 Difference]: With dead ends: 19497 [2024-11-23 18:36:24,312 INFO L226 Difference]: Without dead ends: 13007 [2024-11-23 18:36:24,334 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:36:24,335 INFO L435 NwaCegarLoop]: 898 mSDtfsCounter, 437 mSDsluCounter, 1267 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 2165 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 18:36:24,336 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 2165 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 18:36:24,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13007 states. [2024-11-23 18:36:26,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13007 to 12981. [2024-11-23 18:36:26,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12981 states, 9572 states have (on average 1.615127455077309) internal successors, (15460), 9604 states have internal predecessors, (15460), 3360 states have call successors, (3360), 48 states have call predecessors, (3360), 48 states have return successors, (3360), 3328 states have call predecessors, (3360), 3360 states have call successors, (3360) [2024-11-23 18:36:26,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12981 states to 12981 states and 22180 transitions. [2024-11-23 18:36:26,254 INFO L78 Accepts]: Start accepts. Automaton has 12981 states and 22180 transitions. Word has length 835 [2024-11-23 18:36:26,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:36:26,255 INFO L471 AbstractCegarLoop]: Abstraction has 12981 states and 22180 transitions. [2024-11-23 18:36:26,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) [2024-11-23 18:36:26,256 INFO L276 IsEmpty]: Start isEmpty. Operand 12981 states and 22180 transitions. [2024-11-23 18:36:26,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 837 [2024-11-23 18:36:26,272 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:36:26,272 INFO L218 NwaCegarLoop]: trace histogram [134, 134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:36:26,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 18:36:26,273 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:36:26,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:36:26,274 INFO L85 PathProgramCache]: Analyzing trace with hash -141355831, now seen corresponding path program 1 times [2024-11-23 18:36:26,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:36:26,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103263225] [2024-11-23 18:36:26,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:36:26,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:36:26,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:36:28,389 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35644 trivial. 0 not checked. [2024-11-23 18:36:28,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:36:28,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103263225] [2024-11-23 18:36:28,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103263225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:36:28,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:36:28,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 18:36:28,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052585311] [2024-11-23 18:36:28,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:36:28,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:36:28,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:36:28,392 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:36:28,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:36:28,393 INFO L87 Difference]: Start difference. First operand 12981 states and 22180 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) [2024-11-23 18:36:30,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:36:30,720 INFO L93 Difference]: Finished difference Result 36911 states and 63043 transitions. [2024-11-23 18:36:30,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:36:30,721 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) Word has length 836 [2024-11-23 18:36:30,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:36:30,854 INFO L225 Difference]: With dead ends: 36911 [2024-11-23 18:36:30,855 INFO L226 Difference]: Without dead ends: 23933 [2024-11-23 18:36:30,904 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:36:30,905 INFO L435 NwaCegarLoop]: 916 mSDtfsCounter, 753 mSDsluCounter, 1353 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 2269 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 18:36:30,905 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 2269 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 18:36:30,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23933 states. [2024-11-23 18:36:33,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23933 to 22107. [2024-11-23 18:36:33,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22107 states, 16842 states have (on average 1.6296164351027194) internal successors, (27446), 16922 states have internal predecessors, (27446), 5168 states have call successors, (5168), 96 states have call predecessors, (5168), 96 states have return successors, (5168), 5088 states have call predecessors, (5168), 5168 states have call successors, (5168) [2024-11-23 18:36:33,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22107 states to 22107 states and 37782 transitions. [2024-11-23 18:36:33,375 INFO L78 Accepts]: Start accepts. Automaton has 22107 states and 37782 transitions. Word has length 836 [2024-11-23 18:36:33,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:36:33,376 INFO L471 AbstractCegarLoop]: Abstraction has 22107 states and 37782 transitions. [2024-11-23 18:36:33,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) [2024-11-23 18:36:33,377 INFO L276 IsEmpty]: Start isEmpty. Operand 22107 states and 37782 transitions. [2024-11-23 18:36:33,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 837 [2024-11-23 18:36:33,397 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:36:33,398 INFO L218 NwaCegarLoop]: trace histogram [134, 134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:36:33,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 18:36:33,400 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:36:33,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:36:33,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1499183287, now seen corresponding path program 1 times [2024-11-23 18:36:33,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:36:33,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373150356] [2024-11-23 18:36:33,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:36:33,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:36:34,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:36:37,145 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 63 proven. 336 refuted. 0 times theorem prover too weak. 35245 trivial. 0 not checked. [2024-11-23 18:36:37,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:36:37,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373150356] [2024-11-23 18:36:37,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373150356] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:36:37,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617328862] [2024-11-23 18:36:37,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:36:37,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:36:37,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcaa823-a2ea-4cd8-9d33-99ec8481eb2a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:36:37,150 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcaa823-a2ea-4cd8-9d33-99ec8481eb2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:36:37,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcaa823-a2ea-4cd8-9d33-99ec8481eb2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 18:36:37,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:36:37,832 INFO L256 TraceCheckSpWp]: Trace formula consists of 1856 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 18:36:37,854 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:36:38,362 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 5745 proven. 33 refuted. 0 times theorem prover too weak. 29866 trivial. 0 not checked. [2024-11-23 18:36:38,362 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:36:39,410 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 366 proven. 33 refuted. 0 times theorem prover too weak. 35245 trivial. 0 not checked. [2024-11-23 18:36:39,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617328862] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:36:39,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:36:39,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 11 [2024-11-23 18:36:39,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943256037] [2024-11-23 18:36:39,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:36:39,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 18:36:39,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:36:39,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 18:36:39,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-23 18:36:39,416 INFO L87 Difference]: Start difference. First operand 22107 states and 37782 transitions. Second operand has 11 states, 11 states have (on average 30.818181818181817) internal successors, (339), 11 states have internal predecessors, (339), 4 states have call successors, (279), 2 states have call predecessors, (279), 4 states have return successors, (280), 4 states have call predecessors, (280), 4 states have call successors, (280) [2024-11-23 18:36:47,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:36:47,896 INFO L93 Difference]: Finished difference Result 77167 states and 129438 transitions. [2024-11-23 18:36:47,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-23 18:36:47,896 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 30.818181818181817) internal successors, (339), 11 states have internal predecessors, (339), 4 states have call successors, (279), 2 states have call predecessors, (279), 4 states have return successors, (280), 4 states have call predecessors, (280), 4 states have call successors, (280) Word has length 836 [2024-11-23 18:36:47,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:36:48,215 INFO L225 Difference]: With dead ends: 77167 [2024-11-23 18:36:48,215 INFO L226 Difference]: Without dead ends: 55063 [2024-11-23 18:36:48,295 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1706 GetRequests, 1672 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=327, Invalid=795, Unknown=0, NotChecked=0, Total=1122 [2024-11-23 18:36:48,296 INFO L435 NwaCegarLoop]: 559 mSDtfsCounter, 1595 mSDsluCounter, 2637 mSDsCounter, 0 mSdLazyCounter, 1718 mSolverCounterSat, 809 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1716 SdHoareTripleChecker+Valid, 3196 SdHoareTripleChecker+Invalid, 2527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 809 IncrementalHoareTripleChecker+Valid, 1718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-23 18:36:48,297 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1716 Valid, 3196 Invalid, 2527 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [809 Valid, 1718 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-23 18:36:48,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55063 states. [2024-11-23 18:36:54,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55063 to 49521. [2024-11-23 18:36:54,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49521 states, 36752 states have (on average 1.5927296473661297) internal successors, (58536), 37008 states have internal predecessors, (58536), 12352 states have call successors, (12352), 416 states have call predecessors, (12352), 416 states have return successors, (12352), 12096 states have call predecessors, (12352), 12352 states have call successors, (12352) [2024-11-23 18:36:55,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49521 states to 49521 states and 83240 transitions. [2024-11-23 18:36:55,085 INFO L78 Accepts]: Start accepts. Automaton has 49521 states and 83240 transitions. Word has length 836 [2024-11-23 18:36:55,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:36:55,086 INFO L471 AbstractCegarLoop]: Abstraction has 49521 states and 83240 transitions. [2024-11-23 18:36:55,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 30.818181818181817) internal successors, (339), 11 states have internal predecessors, (339), 4 states have call successors, (279), 2 states have call predecessors, (279), 4 states have return successors, (280), 4 states have call predecessors, (280), 4 states have call successors, (280) [2024-11-23 18:36:55,087 INFO L276 IsEmpty]: Start isEmpty. Operand 49521 states and 83240 transitions. [2024-11-23 18:36:55,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 837 [2024-11-23 18:36:55,114 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:36:55,115 INFO L218 NwaCegarLoop]: trace histogram [134, 134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:36:55,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcaa823-a2ea-4cd8-9d33-99ec8481eb2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 18:36:55,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcaa823-a2ea-4cd8-9d33-99ec8481eb2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:36:55,319 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:36:55,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:36:55,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1573178633, now seen corresponding path program 1 times [2024-11-23 18:36:55,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:36:55,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478935577] [2024-11-23 18:36:55,320 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:36:55,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:36:55,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:36:57,437 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 360 proven. 39 refuted. 0 times theorem prover too weak. 35245 trivial. 0 not checked. [2024-11-23 18:36:57,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:36:57,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478935577] [2024-11-23 18:36:57,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478935577] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:36:57,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55121689] [2024-11-23 18:36:57,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:36:57,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:36:57,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcaa823-a2ea-4cd8-9d33-99ec8481eb2a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:36:57,441 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcaa823-a2ea-4cd8-9d33-99ec8481eb2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:36:57,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcaa823-a2ea-4cd8-9d33-99ec8481eb2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 18:36:58,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:36:58,324 INFO L256 TraceCheckSpWp]: Trace formula consists of 1853 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 18:36:58,341 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:36:58,720 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 6613 proven. 39 refuted. 0 times theorem prover too weak. 28992 trivial. 0 not checked. [2024-11-23 18:36:58,720 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:36:59,555 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 360 proven. 39 refuted. 0 times theorem prover too weak. 35245 trivial. 0 not checked. [2024-11-23 18:36:59,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55121689] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:36:59,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:36:59,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-23 18:36:59,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409595430] [2024-11-23 18:36:59,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:36:59,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 18:36:59,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:36:59,559 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 18:36:59,559 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:36:59,559 INFO L87 Difference]: Start difference. First operand 49521 states and 83240 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 7 states have internal predecessors, (178), 2 states have call successors, (147), 2 states have call predecessors, (147), 4 states have return successors, (148), 2 states have call predecessors, (148), 2 states have call successors, (148) [2024-11-23 18:37:03,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:37:03,624 INFO L93 Difference]: Finished difference Result 99871 states and 167277 transitions. [2024-11-23 18:37:03,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 18:37:03,625 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 7 states have internal predecessors, (178), 2 states have call successors, (147), 2 states have call predecessors, (147), 4 states have return successors, (148), 2 states have call predecessors, (148), 2 states have call successors, (148) Word has length 836 [2024-11-23 18:37:03,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:37:03,866 INFO L225 Difference]: With dead ends: 99871 [2024-11-23 18:37:03,866 INFO L226 Difference]: Without dead ends: 50353 [2024-11-23 18:37:03,964 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1679 GetRequests, 1669 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2024-11-23 18:37:03,969 INFO L435 NwaCegarLoop]: 527 mSDtfsCounter, 441 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 1312 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 18:37:03,970 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [560 Valid, 1312 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 18:37:04,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50353 states. [2024-11-23 18:37:09,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50353 to 49649. [2024-11-23 18:37:09,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49649 states, 36848 states have (on average 1.582066869300912) internal successors, (58296), 37104 states have internal predecessors, (58296), 12352 states have call successors, (12352), 448 states have call predecessors, (12352), 448 states have return successors, (12352), 12096 states have call predecessors, (12352), 12352 states have call successors, (12352) [2024-11-23 18:37:09,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49649 states to 49649 states and 83000 transitions. [2024-11-23 18:37:09,433 INFO L78 Accepts]: Start accepts. Automaton has 49649 states and 83000 transitions. Word has length 836 [2024-11-23 18:37:09,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:37:09,437 INFO L471 AbstractCegarLoop]: Abstraction has 49649 states and 83000 transitions. [2024-11-23 18:37:09,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 7 states have internal predecessors, (178), 2 states have call successors, (147), 2 states have call predecessors, (147), 4 states have return successors, (148), 2 states have call predecessors, (148), 2 states have call successors, (148) [2024-11-23 18:37:09,438 INFO L276 IsEmpty]: Start isEmpty. Operand 49649 states and 83000 transitions. [2024-11-23 18:37:09,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 837 [2024-11-23 18:37:09,455 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:37:09,456 INFO L218 NwaCegarLoop]: trace histogram [134, 134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:37:09,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcaa823-a2ea-4cd8-9d33-99ec8481eb2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-23 18:37:09,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcaa823-a2ea-4cd8-9d33-99ec8481eb2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-23 18:37:09,661 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:37:09,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:37:09,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1439165127, now seen corresponding path program 1 times [2024-11-23 18:37:09,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:37:09,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953533095] [2024-11-23 18:37:09,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:37:09,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:37:10,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:37:15,489 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 165 proven. 234 refuted. 0 times theorem prover too weak. 35245 trivial. 0 not checked. [2024-11-23 18:37:15,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:37:15,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953533095] [2024-11-23 18:37:15,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953533095] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:37:15,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453245143] [2024-11-23 18:37:15,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:37:15,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:37:15,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcaa823-a2ea-4cd8-9d33-99ec8481eb2a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:37:15,492 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcaa823-a2ea-4cd8-9d33-99ec8481eb2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:37:15,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dcaa823-a2ea-4cd8-9d33-99ec8481eb2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 18:37:16,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:37:16,119 INFO L256 TraceCheckSpWp]: Trace formula consists of 1854 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 18:37:16,141 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:37:16,398 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35644 trivial. 0 not checked. [2024-11-23 18:37:16,398 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:37:16,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453245143] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:37:16,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:37:16,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-11-23 18:37:16,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096279809] [2024-11-23 18:37:16,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:37:16,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:37:16,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:37:16,401 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:37:16,401 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-23 18:37:16,402 INFO L87 Difference]: Start difference. First operand 49649 states and 83000 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) [2024-11-23 18:37:24,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:37:24,248 INFO L93 Difference]: Finished difference Result 136961 states and 228718 transitions. [2024-11-23 18:37:24,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:37:24,249 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) Word has length 836 [2024-11-23 18:37:24,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:37:24,586 INFO L225 Difference]: With dead ends: 136961 [2024-11-23 18:37:24,587 INFO L226 Difference]: Without dead ends: 87315 [2024-11-23 18:37:24,703 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 849 GetRequests, 839 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-23 18:37:24,704 INFO L435 NwaCegarLoop]: 861 mSDtfsCounter, 288 mSDsluCounter, 1407 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 2268 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 18:37:24,704 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 2268 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 18:37:24,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87315 states.