./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-28.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_adfc0439-c9ca-42ef-9298-842bef1d327f/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/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_adfc0439-c9ca-42ef-9298-842bef1d327f/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-28.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/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_adfc0439-c9ca-42ef-9298-842bef1d327f/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 0f39224035a48d7ce9f482be8546347834a5df70ab5c0e607d2efca2756bbcbb --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:50:58,081 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:50:58,160 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 01:50:58,169 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:50:58,169 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:50:58,211 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:50:58,212 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:50:58,212 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:50:58,213 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:50:58,213 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:50:58,214 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:50:58,214 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:50:58,215 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:50:58,215 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:50:58,215 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:50:58,216 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:50:58,216 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:50:58,216 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:50:58,216 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:50:58,216 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:50:58,216 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:50:58,217 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:50:58,217 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:50:58,217 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:50:58,217 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:50:58,217 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:50:58,217 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:50:58,217 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:50:58,217 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:50:58,218 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:50:58,218 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:50:58,219 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:50:58,219 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:50:58,219 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:50:58,219 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:50:58,219 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:50:58,219 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:50:58,219 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:50:58,220 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:50:58,220 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:50:58,220 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:50:58,220 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:50:58,220 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:50:58,220 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:50:58,220 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:50:58,220 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:50:58,220 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:50:58,221 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:50:58,221 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_adfc0439-c9ca-42ef-9298-842bef1d327f/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 -> 0f39224035a48d7ce9f482be8546347834a5df70ab5c0e607d2efca2756bbcbb [2024-11-24 01:50:58,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:50:58,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:50:58,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:50:58,567 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:50:58,567 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:50:58,568 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-28.i [2024-11-24 01:51:01,519 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/bin/uautomizer-verify-LYvppIcaGC/data/2b5638281/a2a6b43bcb4c459492ded888d276d81e/FLAG7293a7353 [2024-11-24 01:51:01,842 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:51:01,843 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-28.i [2024-11-24 01:51:01,853 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/bin/uautomizer-verify-LYvppIcaGC/data/2b5638281/a2a6b43bcb4c459492ded888d276d81e/FLAG7293a7353 [2024-11-24 01:51:02,085 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/bin/uautomizer-verify-LYvppIcaGC/data/2b5638281/a2a6b43bcb4c459492ded888d276d81e [2024-11-24 01:51:02,087 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:51:02,088 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:51:02,090 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:51:02,090 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:51:02,093 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:51:02,094 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:51:02" (1/1) ... [2024-11-24 01:51:02,095 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8042d9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:51:02, skipping insertion in model container [2024-11-24 01:51:02,095 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:51:02" (1/1) ... [2024-11-24 01:51:02,117 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:51:02,293 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_adfc0439-c9ca-42ef-9298-842bef1d327f/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-28.i[915,928] [2024-11-24 01:51:02,402 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:51:02,414 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:51:02,424 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_adfc0439-c9ca-42ef-9298-842bef1d327f/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-28.i[915,928] [2024-11-24 01:51:02,470 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:51:02,492 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:51:02,492 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:51:02 WrapperNode [2024-11-24 01:51:02,492 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:51:02,493 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:51:02,493 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:51:02,494 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:51:02,504 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:51:02" (1/1) ... [2024-11-24 01:51:02,522 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:51:02" (1/1) ... [2024-11-24 01:51:02,590 INFO L138 Inliner]: procedures = 26, calls = 48, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 261 [2024-11-24 01:51:02,590 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:51:02,591 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:51:02,591 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:51:02,591 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:51:02,603 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:51:02" (1/1) ... [2024-11-24 01:51:02,603 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:51:02" (1/1) ... [2024-11-24 01:51:02,607 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:51:02" (1/1) ... [2024-11-24 01:51:02,631 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]. [2024-11-24 01:51:02,631 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:51:02" (1/1) ... [2024-11-24 01:51:02,631 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:51:02" (1/1) ... [2024-11-24 01:51:02,643 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:51:02" (1/1) ... [2024-11-24 01:51:02,645 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:51:02" (1/1) ... [2024-11-24 01:51:02,649 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:51:02" (1/1) ... [2024-11-24 01:51:02,652 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:51:02" (1/1) ... [2024-11-24 01:51:02,654 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:51:02" (1/1) ... [2024-11-24 01:51:02,660 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:51:02,661 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:51:02,661 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:51:02,661 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:51:02,666 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:51:02" (1/1) ... [2024-11-24 01:51:02,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:51:02,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:51:02,704 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:51:02,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:51:02,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:51:02,736 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 01:51:02,737 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 01:51:02,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:51:02,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:51:02,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:51:02,838 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:51:02,840 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:51:03,464 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-11-24 01:51:03,464 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:51:03,480 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:51:03,482 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 01:51:03,483 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:51:03 BoogieIcfgContainer [2024-11-24 01:51:03,483 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:51:03,485 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:51:03,485 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:51:03,489 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:51:03,490 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:51:02" (1/3) ... [2024-11-24 01:51:03,491 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3511d93d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:51:03, skipping insertion in model container [2024-11-24 01:51:03,491 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:51:02" (2/3) ... [2024-11-24 01:51:03,492 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3511d93d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:51:03, skipping insertion in model container [2024-11-24 01:51:03,492 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:51:03" (3/3) ... [2024-11-24 01:51:03,493 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-50_file-28.i [2024-11-24 01:51:03,509 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:51:03,512 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-50_file-28.i that has 2 procedures, 113 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 01:51:03,592 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:51:03,610 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;@7ac2b285, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:51:03,611 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 01:51:03,615 INFO L276 IsEmpty]: Start isEmpty. Operand has 113 states, 75 states have (on average 1.4266666666666667) internal successors, (107), 76 states have internal predecessors, (107), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-24 01:51:03,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2024-11-24 01:51:03,633 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:51:03,635 INFO L218 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:51:03,635 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:51:03,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:51:03,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1233466681, now seen corresponding path program 1 times [2024-11-24 01:51:03,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:51:03,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108910887] [2024-11-24 01:51:03,653 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:51:03,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:51:03,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:51:04,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 2312 trivial. 0 not checked. [2024-11-24 01:51:04,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:51:04,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108910887] [2024-11-24 01:51:04,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108910887] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:51:04,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985595833] [2024-11-24 01:51:04,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:51:04,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:51:04,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:51:04,177 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:51:04,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:51:04,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:51:04,458 INFO L256 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 01:51:04,473 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:51:04,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 2312 trivial. 0 not checked. [2024-11-24 01:51:04,538 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:51:04,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985595833] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:51:04,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:51:04,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-24 01:51:04,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256703884] [2024-11-24 01:51:04,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:51:04,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 01:51:04,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:51:04,569 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 01:51:04,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:51:04,572 INFO L87 Difference]: Start difference. First operand has 113 states, 75 states have (on average 1.4266666666666667) internal successors, (107), 76 states have internal predecessors, (107), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 2 states have call successors, (35) [2024-11-24 01:51:04,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:51:04,621 INFO L93 Difference]: Finished difference Result 219 states and 383 transitions. [2024-11-24 01:51:04,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 01:51:04,624 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 2 states have call successors, (35) Word has length 226 [2024-11-24 01:51:04,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:51:04,633 INFO L225 Difference]: With dead ends: 219 [2024-11-24 01:51:04,634 INFO L226 Difference]: Without dead ends: 109 [2024-11-24 01:51:04,639 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:51:04,644 INFO L435 NwaCegarLoop]: 170 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, 170 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 [2024-11-24 01:51:04,648 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:51:04,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-24 01:51:04,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2024-11-24 01:51:04,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 72 states have (on average 1.3888888888888888) internal successors, (100), 72 states have internal predecessors, (100), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-24 01:51:04,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 170 transitions. [2024-11-24 01:51:04,723 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 170 transitions. Word has length 226 [2024-11-24 01:51:04,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:51:04,723 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 170 transitions. [2024-11-24 01:51:04,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 2 states have call successors, (35) [2024-11-24 01:51:04,726 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 170 transitions. [2024-11-24 01:51:04,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2024-11-24 01:51:04,734 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:51:04,735 INFO L218 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:51:04,746 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 01:51:04,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-24 01:51:04,936 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:51:04,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:51:04,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1424483725, now seen corresponding path program 1 times [2024-11-24 01:51:04,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:51:04,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026198727] [2024-11-24 01:51:04,937 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:51:04,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:51:05,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:51:05,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-11-24 01:51:05,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:51:05,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026198727] [2024-11-24 01:51:05,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026198727] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:51:05,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:51:05,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:51:05,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965426691] [2024-11-24 01:51:05,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:51:05,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:51:05,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:51:05,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:51:05,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:51:05,878 INFO L87 Difference]: Start difference. First operand 109 states and 170 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-24 01:51:06,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:51:06,252 INFO L93 Difference]: Finished difference Result 311 states and 480 transitions. [2024-11-24 01:51:06,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:51:06,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 226 [2024-11-24 01:51:06,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:51:06,261 INFO L225 Difference]: With dead ends: 311 [2024-11-24 01:51:06,261 INFO L226 Difference]: Without dead ends: 205 [2024-11-24 01:51:06,262 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:51:06,263 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 298 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:51:06,267 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 408 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 01:51:06,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-11-24 01:51:06,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 202. [2024-11-24 01:51:06,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 138 states have (on average 1.391304347826087) internal successors, (192), 139 states have internal predecessors, (192), 59 states have call successors, (59), 4 states have call predecessors, (59), 4 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2024-11-24 01:51:06,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 310 transitions. [2024-11-24 01:51:06,340 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 310 transitions. Word has length 226 [2024-11-24 01:51:06,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:51:06,341 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 310 transitions. [2024-11-24 01:51:06,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-24 01:51:06,341 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 310 transitions. [2024-11-24 01:51:06,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2024-11-24 01:51:06,349 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:51:06,350 INFO L218 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:51:06,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 01:51:06,350 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:51:06,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:51:06,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1283935115, now seen corresponding path program 1 times [2024-11-24 01:51:06,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:51:06,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216285101] [2024-11-24 01:51:06,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:51:06,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:51:06,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:57:07,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-11-24 01:57:07,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:57:07,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216285101] [2024-11-24 01:57:07,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216285101] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:57:07,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:57:07,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-24 01:57:07,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999222967] [2024-11-24 01:57:07,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:57:07,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 01:57:07,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:57:07,097 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 01:57:07,098 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:57:07,098 INFO L87 Difference]: Start difference. First operand 202 states and 310 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-24 01:57:08,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:57:08,877 INFO L93 Difference]: Finished difference Result 575 states and 863 transitions. [2024-11-24 01:57:08,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 01:57:08,882 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 226 [2024-11-24 01:57:08,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:57:08,887 INFO L225 Difference]: With dead ends: 575 [2024-11-24 01:57:08,887 INFO L226 Difference]: Without dead ends: 376 [2024-11-24 01:57:08,888 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:57:08,889 INFO L435 NwaCegarLoop]: 148 mSDtfsCounter, 150 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:57:08,890 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 720 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-24 01:57:08,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2024-11-24 01:57:08,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 236. [2024-11-24 01:57:08,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 172 states have (on average 1.4186046511627908) internal successors, (244), 173 states have internal predecessors, (244), 59 states have call successors, (59), 4 states have call predecessors, (59), 4 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2024-11-24 01:57:08,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 362 transitions. [2024-11-24 01:57:08,925 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 362 transitions. Word has length 226 [2024-11-24 01:57:08,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:57:08,926 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 362 transitions. [2024-11-24 01:57:08,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-24 01:57:08,927 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 362 transitions. [2024-11-24 01:57:08,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2024-11-24 01:57:08,930 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:57:08,931 INFO L218 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:57:08,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 01:57:08,931 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:57:08,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:57:08,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1676962125, now seen corresponding path program 1 times [2024-11-24 01:57:08,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:57:08,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672005512] [2024-11-24 01:57:08,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:57:08,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:57:08,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:57:09,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-11-24 01:57:09,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:57:09,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672005512] [2024-11-24 01:57:09,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672005512] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:57:09,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:57:09,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:57:09,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46526986] [2024-11-24 01:57:09,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:57:09,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:57:09,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:57:09,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:57:09,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:57:09,146 INFO L87 Difference]: Start difference. First operand 236 states and 362 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-24 01:57:09,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:57:09,693 INFO L93 Difference]: Finished difference Result 989 states and 1522 transitions. [2024-11-24 01:57:09,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:57:09,694 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 226 [2024-11-24 01:57:09,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:57:09,704 INFO L225 Difference]: With dead ends: 989 [2024-11-24 01:57:09,708 INFO L226 Difference]: Without dead ends: 756 [2024-11-24 01:57:09,709 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:57:09,710 INFO L435 NwaCegarLoop]: 178 mSDtfsCounter, 435 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:57:09,710 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 656 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 01:57:09,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2024-11-24 01:57:09,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 473. [2024-11-24 01:57:09,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 346 states have (on average 1.4104046242774566) internal successors, (488), 348 states have internal predecessors, (488), 118 states have call successors, (118), 8 states have call predecessors, (118), 8 states have return successors, (118), 116 states have call predecessors, (118), 118 states have call successors, (118) [2024-11-24 01:57:09,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 724 transitions. [2024-11-24 01:57:09,836 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 724 transitions. Word has length 226 [2024-11-24 01:57:09,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:57:09,839 INFO L471 AbstractCegarLoop]: Abstraction has 473 states and 724 transitions. [2024-11-24 01:57:09,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-24 01:57:09,840 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 724 transitions. [2024-11-24 01:57:09,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2024-11-24 01:57:09,844 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:57:09,844 INFO L218 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:57:09,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 01:57:09,845 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:57:09,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:57:09,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1999914931, now seen corresponding path program 1 times [2024-11-24 01:57:09,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:57:09,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355525982] [2024-11-24 01:57:09,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:57:09,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:57:09,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:59:24,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-11-24 01:59:24,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:59:24,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355525982] [2024-11-24 01:59:24,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355525982] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:59:24,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:59:24,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-24 01:59:24,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749448396] [2024-11-24 01:59:24,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:59:24,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-24 01:59:24,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:59:24,508 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-24 01:59:24,508 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:59:24,508 INFO L87 Difference]: Start difference. First operand 473 states and 724 transitions. Second operand has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 2 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2024-11-24 01:59:32,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:59:32,802 INFO L93 Difference]: Finished difference Result 1108 states and 1667 transitions. [2024-11-24 01:59:32,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 01:59:32,803 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 2 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 226 [2024-11-24 01:59:32,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:59:32,809 INFO L225 Difference]: With dead ends: 1108 [2024-11-24 01:59:32,809 INFO L226 Difference]: Without dead ends: 638 [2024-11-24 01:59:32,811 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2024-11-24 01:59:32,812 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 427 mSDsluCounter, 1084 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:59:32,813 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 1251 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-24 01:59:32,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2024-11-24 01:59:32,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 473. [2024-11-24 01:59:32,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 346 states have (on average 1.4104046242774566) internal successors, (488), 348 states have internal predecessors, (488), 118 states have call successors, (118), 8 states have call predecessors, (118), 8 states have return successors, (118), 116 states have call predecessors, (118), 118 states have call successors, (118) [2024-11-24 01:59:32,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 724 transitions. [2024-11-24 01:59:32,888 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 724 transitions. Word has length 226 [2024-11-24 01:59:32,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:59:32,889 INFO L471 AbstractCegarLoop]: Abstraction has 473 states and 724 transitions. [2024-11-24 01:59:32,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 2 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2024-11-24 01:59:32,890 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 724 transitions. [2024-11-24 01:59:32,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2024-11-24 01:59:32,893 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:59:32,893 INFO L218 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:59:32,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 01:59:32,894 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:59:32,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:59:32,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1989963827, now seen corresponding path program 1 times [2024-11-24 01:59:32,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:59:32,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536015184] [2024-11-24 01:59:32,895 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:59:32,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:59:32,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:59:33,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-11-24 01:59:33,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:59:33,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536015184] [2024-11-24 01:59:33,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536015184] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:59:33,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:59:33,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:59:33,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506417660] [2024-11-24 01:59:33,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:59:33,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:59:33,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:59:33,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:59:33,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:59:33,215 INFO L87 Difference]: Start difference. First operand 473 states and 724 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-24 01:59:33,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:59:33,695 INFO L93 Difference]: Finished difference Result 1483 states and 2259 transitions. [2024-11-24 01:59:33,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:59:33,697 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 226 [2024-11-24 01:59:33,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:59:33,704 INFO L225 Difference]: With dead ends: 1483 [2024-11-24 01:59:33,705 INFO L226 Difference]: Without dead ends: 1013 [2024-11-24 01:59:33,707 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:59:33,708 INFO L435 NwaCegarLoop]: 194 mSDtfsCounter, 162 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:59:33,708 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 641 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 01:59:33,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2024-11-24 01:59:33,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 885. [2024-11-24 01:59:33,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 632 states have (on average 1.389240506329114) internal successors, (878), 636 states have internal predecessors, (878), 236 states have call successors, (236), 16 states have call predecessors, (236), 16 states have return successors, (236), 232 states have call predecessors, (236), 236 states have call successors, (236) [2024-11-24 01:59:33,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1350 transitions. [2024-11-24 01:59:33,901 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1350 transitions. Word has length 226 [2024-11-24 01:59:33,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:59:33,902 INFO L471 AbstractCegarLoop]: Abstraction has 885 states and 1350 transitions. [2024-11-24 01:59:33,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-24 01:59:33,902 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1350 transitions. [2024-11-24 01:59:33,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-11-24 01:59:33,907 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:59:33,907 INFO L218 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:59:33,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 01:59:33,908 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:59:33,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:59:33,908 INFO L85 PathProgramCache]: Analyzing trace with hash 512784279, now seen corresponding path program 1 times [2024-11-24 01:59:33,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:59:33,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196859451] [2024-11-24 01:59:33,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:59:33,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:59:34,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:01:54,025 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-24 02:01:54,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 02:01:54,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101 [2024-11-24 02:01:54,027 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:275) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:499) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:484) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:590) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:245) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:318) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:728) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.postprocessInterpolant(NestedInterpolantsBuilder.java:472) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.buildPredicates(NestedInterpolantsBuilder.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:164) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:292) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:227) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:428) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:314) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:275) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 58 more [2024-11-24 02:01:54,033 INFO L158 Benchmark]: Toolchain (without parser) took 651944.26ms. Allocated memory was 117.4MB in the beginning and 1.6GB in the end (delta: 1.5GB). Free memory was 92.8MB in the beginning and 978.7MB in the end (delta: -886.0MB). Peak memory consumption was 963.1MB. Max. memory is 16.1GB. [2024-11-24 02:01:54,033 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 167.8MB. Free memory was 104.5MB in the beginning and 104.3MB in the end (delta: 216.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 02:01:54,033 INFO L158 Benchmark]: CACSL2BoogieTranslator took 403.19ms. Allocated memory is still 117.4MB. Free memory was 92.8MB in the beginning and 75.5MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-24 02:01:54,034 INFO L158 Benchmark]: Boogie Procedure Inliner took 97.05ms. Allocated memory is still 117.4MB. Free memory was 75.5MB in the beginning and 69.4MB in the end (delta: 6.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 02:01:54,034 INFO L158 Benchmark]: Boogie Preprocessor took 69.58ms. Allocated memory is still 117.4MB. Free memory was 69.4MB in the beginning and 58.2MB in the end (delta: 11.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 02:01:54,034 INFO L158 Benchmark]: RCFGBuilder took 821.91ms. Allocated memory is still 117.4MB. Free memory was 58.2MB in the beginning and 75.6MB in the end (delta: -17.3MB). Peak memory consumption was 32.6MB. Max. memory is 16.1GB. [2024-11-24 02:01:54,035 INFO L158 Benchmark]: TraceAbstraction took 650547.35ms. Allocated memory was 117.4MB in the beginning and 1.6GB in the end (delta: 1.5GB). Free memory was 75.0MB in the beginning and 978.7MB in the end (delta: -903.8MB). Peak memory consumption was 947.9MB. Max. memory is 16.1GB. [2024-11-24 02:01:54,037 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42ms. Allocated memory is still 167.8MB. Free memory was 104.5MB in the beginning and 104.3MB in the end (delta: 216.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 403.19ms. Allocated memory is still 117.4MB. Free memory was 92.8MB in the beginning and 75.5MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 97.05ms. Allocated memory is still 117.4MB. Free memory was 75.5MB in the beginning and 69.4MB in the end (delta: 6.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 69.58ms. Allocated memory is still 117.4MB. Free memory was 69.4MB in the beginning and 58.2MB in the end (delta: 11.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 821.91ms. Allocated memory is still 117.4MB. Free memory was 58.2MB in the beginning and 75.6MB in the end (delta: -17.3MB). Peak memory consumption was 32.6MB. Max. memory is 16.1GB. * TraceAbstraction took 650547.35ms. Allocated memory was 117.4MB in the beginning and 1.6GB in the end (delta: 1.5GB). Free memory was 75.0MB in the beginning and 978.7MB in the end (delta: -903.8MB). Peak memory consumption was 947.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/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_adfc0439-c9ca-42ef-9298-842bef1d327f/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-28.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/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 0f39224035a48d7ce9f482be8546347834a5df70ab5c0e607d2efca2756bbcbb --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 02:01:56,656 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 02:01:56,806 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-24 02:01:56,813 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 02:01:56,813 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 02:01:56,838 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 02:01:56,839 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 02:01:56,839 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 02:01:56,839 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 02:01:56,839 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 02:01:56,839 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 02:01:56,840 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 02:01:56,841 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 02:01:56,841 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 02:01:56,841 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 02:01:56,841 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 02:01:56,841 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 02:01:56,841 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 02:01:56,841 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 02:01:56,841 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 02:01:56,842 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 02:01:56,842 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 02:01:56,842 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 02:01:56,842 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-24 02:01:56,842 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-24 02:01:56,842 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-24 02:01:56,842 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 02:01:56,842 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 02:01:56,843 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 02:01:56,843 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 02:01:56,843 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 02:01:56,843 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 02:01:56,843 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 02:01:56,843 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 02:01:56,843 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 02:01:56,843 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 02:01:56,844 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 02:01:56,844 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 02:01:56,845 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 02:01:56,845 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 02:01:56,846 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 02:01:56,846 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 02:01:56,846 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 02:01:56,846 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 02:01:56,847 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-24 02:01:56,847 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-24 02:01:56,847 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 02:01:56,847 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 02:01:56,847 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 02:01:56,847 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 02:01:56,847 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_adfc0439-c9ca-42ef-9298-842bef1d327f/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 -> 0f39224035a48d7ce9f482be8546347834a5df70ab5c0e607d2efca2756bbcbb [2024-11-24 02:01:57,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 02:01:57,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 02:01:57,232 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 02:01:57,234 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 02:01:57,234 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 02:01:57,235 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-28.i [2024-11-24 02:02:00,338 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/bin/uautomizer-verify-LYvppIcaGC/data/c9afbda3f/72e69f6d0a3d462c86ea15f1e9adc0a3/FLAG520e5b96f [2024-11-24 02:02:00,683 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 02:02:00,684 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-28.i [2024-11-24 02:02:00,699 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/bin/uautomizer-verify-LYvppIcaGC/data/c9afbda3f/72e69f6d0a3d462c86ea15f1e9adc0a3/FLAG520e5b96f [2024-11-24 02:02:00,723 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/bin/uautomizer-verify-LYvppIcaGC/data/c9afbda3f/72e69f6d0a3d462c86ea15f1e9adc0a3 [2024-11-24 02:02:00,725 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 02:02:00,727 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 02:02:00,728 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 02:02:00,728 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 02:02:00,734 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 02:02:00,735 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 02:02:00" (1/1) ... [2024-11-24 02:02:00,737 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59d96c3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:02:00, skipping insertion in model container [2024-11-24 02:02:00,738 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 02:02:00" (1/1) ... [2024-11-24 02:02:00,771 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 02:02:00,969 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_adfc0439-c9ca-42ef-9298-842bef1d327f/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-28.i[915,928] [2024-11-24 02:02:01,135 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 02:02:01,162 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 02:02:01,179 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_adfc0439-c9ca-42ef-9298-842bef1d327f/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-28.i[915,928] [2024-11-24 02:02:01,265 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 02:02:01,300 INFO L204 MainTranslator]: Completed translation [2024-11-24 02:02:01,301 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:02:01 WrapperNode [2024-11-24 02:02:01,301 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 02:02:01,302 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 02:02:01,302 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 02:02:01,302 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 02:02:01,313 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:02:01" (1/1) ... [2024-11-24 02:02:01,336 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:02:01" (1/1) ... [2024-11-24 02:02:01,388 INFO L138 Inliner]: procedures = 27, calls = 48, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 224 [2024-11-24 02:02:01,388 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 02:02:01,389 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 02:02:01,389 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 02:02:01,389 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 02:02:01,404 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:02:01" (1/1) ... [2024-11-24 02:02:01,405 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:02:01" (1/1) ... [2024-11-24 02:02:01,414 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:02:01" (1/1) ... [2024-11-24 02:02:01,440 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]. [2024-11-24 02:02:01,441 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:02:01" (1/1) ... [2024-11-24 02:02:01,441 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:02:01" (1/1) ... [2024-11-24 02:02:01,454 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:02:01" (1/1) ... [2024-11-24 02:02:01,455 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:02:01" (1/1) ... [2024-11-24 02:02:01,463 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:02:01" (1/1) ... [2024-11-24 02:02:01,469 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:02:01" (1/1) ... [2024-11-24 02:02:01,471 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:02:01" (1/1) ... [2024-11-24 02:02:01,479 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 02:02:01,482 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 02:02:01,482 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 02:02:01,482 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 02:02:01,486 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:02:01" (1/1) ... [2024-11-24 02:02:01,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 02:02:01,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:02:01,534 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 02:02:01,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 02:02:01,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 02:02:01,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-24 02:02:01,575 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 02:02:01,576 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 02:02:01,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 02:02:01,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 02:02:01,712 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 02:02:01,713 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 02:02:02,990 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-11-24 02:02:02,990 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 02:02:03,008 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 02:02:03,009 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 02:02:03,010 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 02:02:03 BoogieIcfgContainer [2024-11-24 02:02:03,010 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 02:02:03,012 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 02:02:03,013 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 02:02:03,018 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 02:02:03,019 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 02:02:00" (1/3) ... [2024-11-24 02:02:03,019 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bd88166 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 02:02:03, skipping insertion in model container [2024-11-24 02:02:03,020 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:02:01" (2/3) ... [2024-11-24 02:02:03,020 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bd88166 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 02:02:03, skipping insertion in model container [2024-11-24 02:02:03,020 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 02:02:03" (3/3) ... [2024-11-24 02:02:03,021 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-50_file-28.i [2024-11-24 02:02:03,039 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 02:02:03,042 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-50_file-28.i that has 2 procedures, 101 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 02:02:03,120 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 02:02:03,134 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;@33cd0b8f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 02:02:03,134 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 02:02:03,139 INFO L276 IsEmpty]: Start isEmpty. Operand has 101 states, 63 states have (on average 1.4126984126984128) internal successors, (89), 64 states have internal predecessors, (89), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-24 02:02:03,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-24 02:02:03,155 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:02:03,156 INFO L218 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:02:03,156 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:02:03,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:02:03,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1131792881, now seen corresponding path program 1 times [2024-11-24 02:02:03,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 02:02:03,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [836990686] [2024-11-24 02:02:03,173 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:02:03,173 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-24 02:02:03,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-24 02:02:03,177 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-24 02:02:03,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-24 02:02:03,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:02:03,680 INFO L256 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 02:02:03,725 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:02:03,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 824 proven. 0 refuted. 0 times theorem prover too weak. 1556 trivial. 0 not checked. [2024-11-24 02:02:03,803 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 02:02:03,808 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 02:02:03,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [836990686] [2024-11-24 02:02:03,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [836990686] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:02:03,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:02:03,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 02:02:03,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250035486] [2024-11-24 02:02:03,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:02:03,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 02:02:03,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 02:02:03,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 02:02:03,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 02:02:03,844 INFO L87 Difference]: Start difference. First operand has 101 states, 63 states have (on average 1.4126984126984128) internal successors, (89), 64 states have internal predecessors, (89), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2024-11-24 02:02:03,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:02:03,894 INFO L93 Difference]: Finished difference Result 195 states and 347 transitions. [2024-11-24 02:02:03,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 02:02:03,896 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 222 [2024-11-24 02:02:03,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:02:03,906 INFO L225 Difference]: With dead ends: 195 [2024-11-24 02:02:03,906 INFO L226 Difference]: Without dead ends: 97 [2024-11-24 02:02:03,912 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 02:02:03,916 INFO L435 NwaCegarLoop]: 152 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, 152 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 [2024-11-24 02:02:03,919 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 02:02:03,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-24 02:02:03,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2024-11-24 02:02:03,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 60 states have (on average 1.3666666666666667) internal successors, (82), 60 states have internal predecessors, (82), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-24 02:02:03,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 152 transitions. [2024-11-24 02:02:03,977 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 152 transitions. Word has length 222 [2024-11-24 02:02:03,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:02:03,977 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 152 transitions. [2024-11-24 02:02:03,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2024-11-24 02:02:03,978 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 152 transitions. [2024-11-24 02:02:03,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-24 02:02:03,982 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:02:03,982 INFO L218 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:02:03,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-24 02:02:04,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-24 02:02:04,183 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:02:04,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:02:04,184 INFO L85 PathProgramCache]: Analyzing trace with hash 628120619, now seen corresponding path program 1 times [2024-11-24 02:02:04,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 02:02:04,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [378538607] [2024-11-24 02:02:04,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:02:04,186 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-24 02:02:04,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-24 02:02:04,189 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-24 02:02:04,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-24 02:02:04,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:02:04,660 INFO L256 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 02:02:04,667 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:02:04,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-11-24 02:02:04,789 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 02:02:04,789 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 02:02:04,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [378538607] [2024-11-24 02:02:04,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [378538607] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:02:04,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:02:04,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 02:02:04,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652980214] [2024-11-24 02:02:04,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:02:04,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 02:02:04,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 02:02:04,792 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 02:02:04,793 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:02:04,793 INFO L87 Difference]: Start difference. First operand 97 states and 152 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-24 02:02:05,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:02:05,281 INFO L93 Difference]: Finished difference Result 312 states and 485 transitions. [2024-11-24 02:02:05,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 02:02:05,282 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 222 [2024-11-24 02:02:05,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:02:05,289 INFO L225 Difference]: With dead ends: 312 [2024-11-24 02:02:05,290 INFO L226 Difference]: Without dead ends: 218 [2024-11-24 02:02:05,291 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 02:02:05,292 INFO L435 NwaCegarLoop]: 206 mSDtfsCounter, 256 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 02:02:05,292 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 501 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 02:02:05,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-11-24 02:02:05,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 214. [2024-11-24 02:02:05,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 128 states have (on average 1.3125) internal successors, (168), 130 states have internal predecessors, (168), 81 states have call successors, (81), 4 states have call predecessors, (81), 4 states have return successors, (81), 79 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-24 02:02:05,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 330 transitions. [2024-11-24 02:02:05,370 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 330 transitions. Word has length 222 [2024-11-24 02:02:05,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:02:05,373 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 330 transitions. [2024-11-24 02:02:05,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-24 02:02:05,374 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 330 transitions. [2024-11-24 02:02:05,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-24 02:02:05,381 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:02:05,381 INFO L218 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:02:05,393 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-24 02:02:05,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-24 02:02:05,583 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:02:05,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:02:05,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1050822445, now seen corresponding path program 1 times [2024-11-24 02:02:05,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 02:02:05,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [320435666] [2024-11-24 02:02:05,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:02:05,586 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-24 02:02:05,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-24 02:02:05,589 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-24 02:02:05,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfc0439-c9ca-42ef-9298-842bef1d327f/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-24 02:02:06,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:02:06,042 INFO L256 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-24 02:02:06,056 INFO L279 TraceCheckSpWp]: Computing forward predicates...