./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-14.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_5e2367c7-5649-4809-a97b-5b952aeb3513/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/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_5e2367c7-5649-4809-a97b-5b952aeb3513/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-14.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/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_5e2367c7-5649-4809-a97b-5b952aeb3513/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 a72044eca37c9344cf7356219da330f9c945a1c22555364502c74c325db2c27b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:20:16,039 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:20:16,153 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 01:20:16,162 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:20:16,163 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:20:16,205 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:20:16,207 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:20:16,208 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:20:16,208 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:20:16,209 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:20:16,210 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:20:16,210 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:20:16,210 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:20:16,211 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:20:16,211 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:20:16,212 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:20:16,212 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:20:16,212 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:20:16,212 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:20:16,212 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:20:16,213 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:20:16,213 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:20:16,213 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:20:16,213 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:20:16,213 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:20:16,213 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:20:16,213 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:20:16,214 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:20:16,214 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:20:16,214 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:20:16,214 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:20:16,214 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:20:16,215 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:20:16,215 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:20:16,215 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:20:16,216 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:20:16,216 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:20:16,216 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:20:16,216 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:20:16,216 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:20:16,216 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:20:16,217 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:20:16,217 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:20:16,217 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:20:16,217 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:20:16,218 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:20:16,218 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:20:16,218 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:20:16,218 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_5e2367c7-5649-4809-a97b-5b952aeb3513/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 -> a72044eca37c9344cf7356219da330f9c945a1c22555364502c74c325db2c27b [2024-11-24 01:20:16,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:20:16,602 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:20:16,605 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:20:16,607 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:20:16,608 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:20:16,609 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-14.i [2024-11-24 01:20:20,401 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/bin/uautomizer-verify-LYvppIcaGC/data/72f8e7a9a/1110ec1e9866427494838a0808d23038/FLAG5d7b253d7 [2024-11-24 01:20:20,785 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:20:20,786 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-14.i [2024-11-24 01:20:20,805 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/bin/uautomizer-verify-LYvppIcaGC/data/72f8e7a9a/1110ec1e9866427494838a0808d23038/FLAG5d7b253d7 [2024-11-24 01:20:20,838 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/bin/uautomizer-verify-LYvppIcaGC/data/72f8e7a9a/1110ec1e9866427494838a0808d23038 [2024-11-24 01:20:20,841 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:20:20,844 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:20:20,846 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:20:20,846 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:20:20,853 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:20:20,855 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:20:20" (1/1) ... [2024-11-24 01:20:20,858 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29ad7792 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:20:20, skipping insertion in model container [2024-11-24 01:20:20,859 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:20:20" (1/1) ... [2024-11-24 01:20:20,901 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:20:21,150 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_5e2367c7-5649-4809-a97b-5b952aeb3513/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-14.i[916,929] [2024-11-24 01:20:21,273 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:20:21,296 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:20:21,311 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_5e2367c7-5649-4809-a97b-5b952aeb3513/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-14.i[916,929] [2024-11-24 01:20:21,408 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:20:21,438 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:20:21,440 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:20:21 WrapperNode [2024-11-24 01:20:21,441 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:20:21,442 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:20:21,442 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:20:21,442 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:20:21,452 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:20:21" (1/1) ... [2024-11-24 01:20:21,478 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:20:21" (1/1) ... [2024-11-24 01:20:21,603 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 276 [2024-11-24 01:20:21,604 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:20:21,604 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:20:21,605 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:20:21,605 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:20:21,616 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:20:21" (1/1) ... [2024-11-24 01:20:21,616 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:20:21" (1/1) ... [2024-11-24 01:20:21,623 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:20:21" (1/1) ... [2024-11-24 01:20:21,648 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 01:20:21,648 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:20:21" (1/1) ... [2024-11-24 01:20:21,652 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:20:21" (1/1) ... [2024-11-24 01:20:21,675 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:20:21" (1/1) ... [2024-11-24 01:20:21,677 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:20:21" (1/1) ... [2024-11-24 01:20:21,687 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:20:21" (1/1) ... [2024-11-24 01:20:21,693 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:20:21" (1/1) ... [2024-11-24 01:20:21,700 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:20:21" (1/1) ... [2024-11-24 01:20:21,711 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:20:21,713 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:20:21,713 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:20:21,713 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:20:21,714 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:20:21" (1/1) ... [2024-11-24 01:20:21,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:20:21,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:20:21,750 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:20:21,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:20:21,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:20:21,785 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 01:20:21,785 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 01:20:21,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:20:21,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:20:21,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:20:21,889 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:20:21,891 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:20:22,620 INFO L? ?]: Removed 29 outVars from TransFormulas that were not future-live. [2024-11-24 01:20:22,620 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:20:22,638 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:20:22,638 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 01:20:22,638 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:20:22 BoogieIcfgContainer [2024-11-24 01:20:22,638 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:20:22,641 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:20:22,641 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:20:22,646 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:20:22,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:20:20" (1/3) ... [2024-11-24 01:20:22,647 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45a9d65d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:20:22, skipping insertion in model container [2024-11-24 01:20:22,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:20:21" (2/3) ... [2024-11-24 01:20:22,647 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45a9d65d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:20:22, skipping insertion in model container [2024-11-24 01:20:22,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:20:22" (3/3) ... [2024-11-24 01:20:22,649 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-while_file-14.i [2024-11-24 01:20:22,666 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:20:22,667 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_100-while_file-14.i that has 2 procedures, 115 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 01:20:22,748 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:20:22,764 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;@65602aba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:20:22,764 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 01:20:22,769 INFO L276 IsEmpty]: Start isEmpty. Operand has 115 states, 81 states have (on average 1.4691358024691359) internal successors, (119), 82 states have internal predecessors, (119), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-24 01:20:22,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-24 01:20:22,786 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:20:22,787 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:20:22,789 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:20:22,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:20:22,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1723483616, now seen corresponding path program 1 times [2024-11-24 01:20:22,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:20:22,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131789850] [2024-11-24 01:20:22,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:20:22,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:20:22,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:20:23,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2024-11-24 01:20:23,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:20:23,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131789850] [2024-11-24 01:20:23,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131789850] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:20:23,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314140576] [2024-11-24 01:20:23,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:20:23,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:20:23,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:20:23,277 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:20:23,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:20:23,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:20:23,577 INFO L256 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 01:20:23,586 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:20:23,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2024-11-24 01:20:23,642 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:20:23,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314140576] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:20:23,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:20:23,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-24 01:20:23,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546237197] [2024-11-24 01:20:23,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:20:23,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 01:20:23,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:20:23,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 01:20:23,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:20:23,683 INFO L87 Difference]: Start difference. First operand has 115 states, 81 states have (on average 1.4691358024691359) internal successors, (119), 82 states have internal predecessors, (119), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-24 01:20:23,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:20:23,745 INFO L93 Difference]: Finished difference Result 222 states and 385 transitions. [2024-11-24 01:20:23,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 01:20:23,749 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) Word has length 202 [2024-11-24 01:20:23,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:20:23,755 INFO L225 Difference]: With dead ends: 222 [2024-11-24 01:20:23,755 INFO L226 Difference]: Without dead ends: 110 [2024-11-24 01:20:23,759 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 203 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 01:20:23,762 INFO L435 NwaCegarLoop]: 171 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, 171 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 01:20:23,762 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:20:23,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-24 01:20:23,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2024-11-24 01:20:23,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 77 states have (on average 1.4155844155844155) internal successors, (109), 77 states have internal predecessors, (109), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-24 01:20:23,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 171 transitions. [2024-11-24 01:20:23,809 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 171 transitions. Word has length 202 [2024-11-24 01:20:23,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:20:23,810 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 171 transitions. [2024-11-24 01:20:23,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-24 01:20:23,810 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 171 transitions. [2024-11-24 01:20:23,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-24 01:20:23,814 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:20:23,814 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:20:23,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 01:20:24,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:20:24,015 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:20:24,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:20:24,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1536921438, now seen corresponding path program 1 times [2024-11-24 01:20:24,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:20:24,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111111935] [2024-11-24 01:20:24,017 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:20:24,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:20:24,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:20:24,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:20:24,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:20:24,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111111935] [2024-11-24 01:20:24,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111111935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:20:24,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:20:24,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:20:24,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474037292] [2024-11-24 01:20:24,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:20:24,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:20:24,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:20:24,754 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:20:24,754 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:20:24,754 INFO L87 Difference]: Start difference. First operand 110 states and 171 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:20:24,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:20:24,841 INFO L93 Difference]: Finished difference Result 218 states and 341 transitions. [2024-11-24 01:20:24,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:20:24,842 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 202 [2024-11-24 01:20:24,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:20:24,845 INFO L225 Difference]: With dead ends: 218 [2024-11-24 01:20:24,845 INFO L226 Difference]: Without dead ends: 111 [2024-11-24 01:20:24,850 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:20:24,851 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 4 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:20:24,852 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 495 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:20:24,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-24 01:20:24,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2024-11-24 01:20:24,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 78 states have (on average 1.4102564102564104) internal successors, (110), 78 states have internal predecessors, (110), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-24 01:20:24,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 172 transitions. [2024-11-24 01:20:24,879 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 172 transitions. Word has length 202 [2024-11-24 01:20:24,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:20:24,885 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 172 transitions. [2024-11-24 01:20:24,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:20:24,885 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 172 transitions. [2024-11-24 01:20:24,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-24 01:20:24,890 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:20:24,890 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:20:24,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 01:20:24,890 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:20:24,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:20:24,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1256844898, now seen corresponding path program 1 times [2024-11-24 01:20:24,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:20:24,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476139857] [2024-11-24 01:20:24,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:20:24,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:20:25,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:20:33,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:20:33,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:20:33,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476139857] [2024-11-24 01:20:33,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476139857] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:20:33,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:20:33,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-24 01:20:33,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736753312] [2024-11-24 01:20:33,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:20:33,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 01:20:33,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:20:33,581 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 01:20:33,581 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:20:33,581 INFO L87 Difference]: Start difference. First operand 111 states and 172 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:20:37,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:20:37,805 INFO L93 Difference]: Finished difference Result 478 states and 728 transitions. [2024-11-24 01:20:37,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-24 01:20:37,806 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 203 [2024-11-24 01:20:37,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:20:37,810 INFO L225 Difference]: With dead ends: 478 [2024-11-24 01:20:37,810 INFO L226 Difference]: Without dead ends: 370 [2024-11-24 01:20:37,814 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=163, Invalid=487, Unknown=0, NotChecked=0, Total=650 [2024-11-24 01:20:37,815 INFO L435 NwaCegarLoop]: 148 mSDtfsCounter, 1043 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1043 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:20:37,815 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1043 Valid, 1012 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1293 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-24 01:20:37,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2024-11-24 01:20:37,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 242. [2024-11-24 01:20:37,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 174 states have (on average 1.4022988505747127) internal successors, (244), 175 states have internal predecessors, (244), 64 states have call successors, (64), 3 states have call predecessors, (64), 3 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2024-11-24 01:20:37,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 372 transitions. [2024-11-24 01:20:37,887 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 372 transitions. Word has length 203 [2024-11-24 01:20:37,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:20:37,888 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 372 transitions. [2024-11-24 01:20:37,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:20:37,889 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 372 transitions. [2024-11-24 01:20:37,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-24 01:20:37,897 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:20:37,898 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:20:37,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 01:20:37,898 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:20:37,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:20:37,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1397393508, now seen corresponding path program 1 times [2024-11-24 01:20:37,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:20:37,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282212122] [2024-11-24 01:20:37,899 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:20:37,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:20:38,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:20:39,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:20:39,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:20:39,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282212122] [2024-11-24 01:20:39,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282212122] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:20:39,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:20:39,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:20:39,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297349833] [2024-11-24 01:20:39,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:20:39,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:20:39,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:20:39,299 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:20:39,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:20:39,300 INFO L87 Difference]: Start difference. First operand 242 states and 372 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:20:39,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:20:39,704 INFO L93 Difference]: Finished difference Result 355 states and 545 transitions. [2024-11-24 01:20:39,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:20:39,705 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 203 [2024-11-24 01:20:39,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:20:39,709 INFO L225 Difference]: With dead ends: 355 [2024-11-24 01:20:39,709 INFO L226 Difference]: Without dead ends: 247 [2024-11-24 01:20:39,709 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:20:39,710 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 73 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:20:39,711 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 505 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 01:20:39,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2024-11-24 01:20:39,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 228. [2024-11-24 01:20:39,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 159 states have (on average 1.371069182389937) internal successors, (218), 160 states have internal predecessors, (218), 64 states have call successors, (64), 4 states have call predecessors, (64), 4 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2024-11-24 01:20:39,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 346 transitions. [2024-11-24 01:20:39,743 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 346 transitions. Word has length 203 [2024-11-24 01:20:39,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:20:39,744 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 346 transitions. [2024-11-24 01:20:39,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:20:39,745 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 346 transitions. [2024-11-24 01:20:39,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-24 01:20:39,748 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:20:39,748 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:20:39,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 01:20:39,748 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:20:39,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:20:39,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1801435833, now seen corresponding path program 1 times [2024-11-24 01:20:39,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:20:39,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258428211] [2024-11-24 01:20:39,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:20:39,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:20:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:21:51,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:21:51,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:21:51,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258428211] [2024-11-24 01:21:51,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258428211] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:21:51,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:21:51,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-24 01:21:51,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260389540] [2024-11-24 01:21:51,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:21:51,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-24 01:21:51,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:21:51,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-24 01:21:51,013 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2024-11-24 01:21:51,013 INFO L87 Difference]: Start difference. First operand 228 states and 346 transitions. Second operand has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-24 01:22:23,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:22:23,025 INFO L93 Difference]: Finished difference Result 1014 states and 1512 transitions. [2024-11-24 01:22:23,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-24 01:22:23,025 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) Word has length 205 [2024-11-24 01:22:23,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:22:23,031 INFO L225 Difference]: With dead ends: 1014 [2024-11-24 01:22:23,031 INFO L226 Difference]: Without dead ends: 793 [2024-11-24 01:22:23,032 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 31.2s TimeCoverageRelationStatistics Valid=260, Invalid=610, Unknown=0, NotChecked=0, Total=870 [2024-11-24 01:22:23,033 INFO L435 NwaCegarLoop]: 159 mSDtfsCounter, 882 mSDsluCounter, 1001 mSDsCounter, 0 mSdLazyCounter, 1960 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 1994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:22:23,033 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 1160 Invalid, 1994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1960 Invalid, 0 Unknown, 0 Unchecked, 13.5s Time] [2024-11-24 01:22:23,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2024-11-24 01:22:23,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 540. [2024-11-24 01:22:23,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 408 states have (on average 1.3970588235294117) internal successors, (570), 411 states have internal predecessors, (570), 121 states have call successors, (121), 10 states have call predecessors, (121), 10 states have return successors, (121), 118 states have call predecessors, (121), 121 states have call successors, (121) [2024-11-24 01:22:23,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 812 transitions. [2024-11-24 01:22:23,110 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 812 transitions. Word has length 205 [2024-11-24 01:22:23,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:22:23,110 INFO L471 AbstractCegarLoop]: Abstraction has 540 states and 812 transitions. [2024-11-24 01:22:23,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-24 01:22:23,111 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 812 transitions. [2024-11-24 01:22:23,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-24 01:22:23,114 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:22:23,114 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:22:23,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 01:22:23,115 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:22:23,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:22:23,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1792466885, now seen corresponding path program 1 times [2024-11-24 01:22:23,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:22:23,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210883067] [2024-11-24 01:22:23,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:22:23,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:22:23,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:23:21,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:23:21,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:23:21,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210883067] [2024-11-24 01:23:21,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210883067] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:23:21,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:23:21,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-24 01:23:21,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311535917] [2024-11-24 01:23:21,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:23:21,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-24 01:23:21,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:23:21,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-24 01:23:21,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2024-11-24 01:23:21,781 INFO L87 Difference]: Start difference. First operand 540 states and 812 transitions. Second operand has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:23:41,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:23:41,406 INFO L93 Difference]: Finished difference Result 1553 states and 2307 transitions. [2024-11-24 01:23:41,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-24 01:23:41,411 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 205 [2024-11-24 01:23:41,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:23:41,423 INFO L225 Difference]: With dead ends: 1553 [2024-11-24 01:23:41,426 INFO L226 Difference]: Without dead ends: 1020 [2024-11-24 01:23:41,428 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 18.8s TimeCoverageRelationStatistics Valid=174, Invalid=426, Unknown=0, NotChecked=0, Total=600 [2024-11-24 01:23:41,433 INFO L435 NwaCegarLoop]: 159 mSDtfsCounter, 572 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 1225 SdHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:23:41,438 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 1225 Invalid, 1398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1394 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2024-11-24 01:23:41,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2024-11-24 01:23:41,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 642. [2024-11-24 01:23:41,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 495 states have (on average 1.408080808080808) internal successors, (697), 499 states have internal predecessors, (697), 134 states have call successors, (134), 12 states have call predecessors, (134), 12 states have return successors, (134), 130 states have call predecessors, (134), 134 states have call successors, (134) [2024-11-24 01:23:41,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 965 transitions. [2024-11-24 01:23:41,584 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 965 transitions. Word has length 205 [2024-11-24 01:23:41,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:23:41,584 INFO L471 AbstractCegarLoop]: Abstraction has 642 states and 965 transitions. [2024-11-24 01:23:41,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:23:41,585 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 965 transitions. [2024-11-24 01:23:41,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-24 01:23:41,588 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:23:41,588 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:23:41,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 01:23:41,588 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:23:41,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:23:41,589 INFO L85 PathProgramCache]: Analyzing trace with hash -121792201, now seen corresponding path program 1 times [2024-11-24 01:23:41,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:23:41,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308073778] [2024-11-24 01:23:41,590 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:23:41,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:23:41,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:24:56,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:24:56,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:24:56,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308073778] [2024-11-24 01:24:56,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308073778] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:24:56,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:24:56,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-24 01:24:56,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931088508] [2024-11-24 01:24:56,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:24:56,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-24 01:24:56,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:24:56,804 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-24 01:24:56,804 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-11-24 01:24:56,805 INFO L87 Difference]: Start difference. First operand 642 states and 965 transitions. Second operand has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:25:20,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:25:20,948 INFO L93 Difference]: Finished difference Result 1068 states and 1593 transitions. [2024-11-24 01:25:20,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-24 01:25:20,949 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 205 [2024-11-24 01:25:20,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:25:20,962 INFO L225 Difference]: With dead ends: 1068 [2024-11-24 01:25:20,962 INFO L226 Difference]: Without dead ends: 854 [2024-11-24 01:25:20,964 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 29.1s TimeCoverageRelationStatistics Valid=235, Invalid=635, Unknown=0, NotChecked=0, Total=870 [2024-11-24 01:25:20,966 INFO L435 NwaCegarLoop]: 213 mSDtfsCounter, 852 mSDsluCounter, 890 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 1103 SdHoareTripleChecker+Invalid, 1171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2024-11-24 01:25:20,967 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [852 Valid, 1103 Invalid, 1171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2024-11-24 01:25:20,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2024-11-24 01:25:21,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 662. [2024-11-24 01:25:21,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 515 states have (on average 1.4135922330097088) internal successors, (728), 519 states have internal predecessors, (728), 134 states have call successors, (134), 12 states have call predecessors, (134), 12 states have return successors, (134), 130 states have call predecessors, (134), 134 states have call successors, (134) [2024-11-24 01:25:21,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 996 transitions. [2024-11-24 01:25:21,094 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 996 transitions. Word has length 205 [2024-11-24 01:25:21,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:25:21,095 INFO L471 AbstractCegarLoop]: Abstraction has 662 states and 996 transitions. [2024-11-24 01:25:21,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:25:21,095 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 996 transitions. [2024-11-24 01:25:21,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-24 01:25:21,103 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:25:21,104 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:21,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 01:25:21,104 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:25:21,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:25:21,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1291962743, now seen corresponding path program 1 times [2024-11-24 01:25:21,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:25:21,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290856958] [2024-11-24 01:25:21,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:25:21,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:25:21,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:25:21,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:25:21,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:25:21,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290856958] [2024-11-24 01:25:21,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290856958] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:25:21,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:25:21,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:25:21,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510822552] [2024-11-24 01:25:21,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:25:21,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:25:21,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:25:21,347 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:25:21,347 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:25:21,348 INFO L87 Difference]: Start difference. First operand 662 states and 996 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:25:21,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:25:21,589 INFO L93 Difference]: Finished difference Result 1648 states and 2488 transitions. [2024-11-24 01:25:21,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:25:21,590 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 205 [2024-11-24 01:25:21,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:25:21,600 INFO L225 Difference]: With dead ends: 1648 [2024-11-24 01:25:21,600 INFO L226 Difference]: Without dead ends: 993 [2024-11-24 01:25:21,603 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:25:21,604 INFO L435 NwaCegarLoop]: 227 mSDtfsCounter, 108 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:25:21,605 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 594 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:25:21,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2024-11-24 01:25:21,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 782. [2024-11-24 01:25:21,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 584 states have (on average 1.3955479452054795) internal successors, (815), 587 states have internal predecessors, (815), 183 states have call successors, (183), 14 states have call predecessors, (183), 14 states have return successors, (183), 180 states have call predecessors, (183), 183 states have call successors, (183) [2024-11-24 01:25:21,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 1181 transitions. [2024-11-24 01:25:21,721 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 1181 transitions. Word has length 205 [2024-11-24 01:25:21,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:25:21,722 INFO L471 AbstractCegarLoop]: Abstraction has 782 states and 1181 transitions. [2024-11-24 01:25:21,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:25:21,725 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 1181 transitions. [2024-11-24 01:25:21,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-24 01:25:21,729 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:25:21,730 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:21,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 01:25:21,730 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:25:21,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:25:21,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1842066968, now seen corresponding path program 1 times [2024-11-24 01:25:21,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:25:21,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433840309] [2024-11-24 01:25:21,732 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:25:21,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:25:21,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:25:22,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:25:22,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:25:22,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433840309] [2024-11-24 01:25:22,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433840309] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:25:22,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:25:22,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 01:25:22,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765619834] [2024-11-24 01:25:22,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:25:22,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:25:22,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:25:22,470 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:25:22,471 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:25:22,471 INFO L87 Difference]: Start difference. First operand 782 states and 1181 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-24 01:25:23,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:25:23,465 INFO L93 Difference]: Finished difference Result 1913 states and 2881 transitions. [2024-11-24 01:25:23,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:25:23,467 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) Word has length 206 [2024-11-24 01:25:23,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:25:23,476 INFO L225 Difference]: With dead ends: 1913 [2024-11-24 01:25:23,477 INFO L226 Difference]: Without dead ends: 1138 [2024-11-24 01:25:23,481 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:25:23,484 INFO L435 NwaCegarLoop]: 187 mSDtfsCounter, 294 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:25:23,485 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 728 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-24 01:25:23,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2024-11-24 01:25:23,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 1058. [2024-11-24 01:25:23,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1058 states, 812 states have (on average 1.4088669950738917) internal successors, (1144), 816 states have internal predecessors, (1144), 227 states have call successors, (227), 18 states have call predecessors, (227), 18 states have return successors, (227), 223 states have call predecessors, (227), 227 states have call successors, (227) [2024-11-24 01:25:23,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1598 transitions. [2024-11-24 01:25:23,622 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1598 transitions. Word has length 206 [2024-11-24 01:25:23,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:25:23,623 INFO L471 AbstractCegarLoop]: Abstraction has 1058 states and 1598 transitions. [2024-11-24 01:25:23,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-24 01:25:23,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1598 transitions. [2024-11-24 01:25:23,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-24 01:25:23,627 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:25:23,628 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:23,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 01:25:23,628 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:25:23,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:25:23,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1141002390, now seen corresponding path program 1 times [2024-11-24 01:25:23,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:25:23,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949836882] [2024-11-24 01:25:23,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:25:23,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:25:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:26:42,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:26:42,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:26:42,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949836882] [2024-11-24 01:26:42,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949836882] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:26:42,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:26:42,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-24 01:26:42,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486605794] [2024-11-24 01:26:42,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:26:42,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-24 01:26:42,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:26:42,321 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-24 01:26:42,321 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-11-24 01:26:42,322 INFO L87 Difference]: Start difference. First operand 1058 states and 1598 transitions. Second operand has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 states have internal predecessors, (54), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-24 01:27:03,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:27:03,240 INFO L93 Difference]: Finished difference Result 2332 states and 3509 transitions. [2024-11-24 01:27:03,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-24 01:27:03,241 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 states have internal predecessors, (54), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) Word has length 206 [2024-11-24 01:27:03,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:27:03,253 INFO L225 Difference]: With dead ends: 2332 [2024-11-24 01:27:03,253 INFO L226 Difference]: Without dead ends: 1633 [2024-11-24 01:27:03,256 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 23.5s TimeCoverageRelationStatistics Valid=327, Invalid=729, Unknown=0, NotChecked=0, Total=1056 [2024-11-24 01:27:03,257 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 982 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 982 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2024-11-24 01:27:03,257 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [982 Valid, 1085 Invalid, 1414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1381 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2024-11-24 01:27:03,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2024-11-24 01:27:03,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1445. [2024-11-24 01:27:03,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1118 states have (on average 1.4168157423971377) internal successors, (1584), 1123 states have internal predecessors, (1584), 302 states have call successors, (302), 24 states have call predecessors, (302), 24 states have return successors, (302), 297 states have call predecessors, (302), 302 states have call successors, (302) [2024-11-24 01:27:03,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 2188 transitions. [2024-11-24 01:27:03,446 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 2188 transitions. Word has length 206 [2024-11-24 01:27:03,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:27:03,448 INFO L471 AbstractCegarLoop]: Abstraction has 1445 states and 2188 transitions. [2024-11-24 01:27:03,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 states have internal predecessors, (54), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-24 01:27:03,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 2188 transitions. [2024-11-24 01:27:03,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-24 01:27:03,451 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:27:03,452 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:27:03,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 01:27:03,453 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:27:03,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:27:03,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1564451955, now seen corresponding path program 1 times [2024-11-24 01:27:03,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:27:03,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188877016] [2024-11-24 01:27:03,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:27:03,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:27:03,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:28:15,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:28:15,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:28:15,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188877016] [2024-11-24 01:28:15,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188877016] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:28:15,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:28:15,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-24 01:28:15,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769537351] [2024-11-24 01:28:15,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:28:15,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-24 01:28:15,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:28:15,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-24 01:28:15,553 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-11-24 01:28:15,553 INFO L87 Difference]: Start difference. First operand 1445 states and 2188 transitions. Second operand has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:28:50,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:28:50,720 INFO L93 Difference]: Finished difference Result 2645 states and 3965 transitions. [2024-11-24 01:28:50,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-24 01:28:50,721 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 206 [2024-11-24 01:28:50,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:28:50,730 INFO L225 Difference]: With dead ends: 2645 [2024-11-24 01:28:50,730 INFO L226 Difference]: Without dead ends: 1668 [2024-11-24 01:28:50,734 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 34.1s TimeCoverageRelationStatistics Valid=273, Invalid=657, Unknown=0, NotChecked=0, Total=930 [2024-11-24 01:28:50,734 INFO L435 NwaCegarLoop]: 171 mSDtfsCounter, 790 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 2341 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 2349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 2341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2024-11-24 01:28:50,735 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [790 Valid, 1181 Invalid, 2349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 2341 Invalid, 0 Unknown, 0 Unchecked, 14.9s Time] [2024-11-24 01:28:50,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2024-11-24 01:28:50,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1461. [2024-11-24 01:28:50,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1461 states, 1134 states have (on average 1.4197530864197532) internal successors, (1610), 1139 states have internal predecessors, (1610), 302 states have call successors, (302), 24 states have call predecessors, (302), 24 states have return successors, (302), 297 states have call predecessors, (302), 302 states have call successors, (302) [2024-11-24 01:28:50,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 2214 transitions. [2024-11-24 01:28:50,883 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 2214 transitions. Word has length 206 [2024-11-24 01:28:50,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:28:50,884 INFO L471 AbstractCegarLoop]: Abstraction has 1461 states and 2214 transitions. [2024-11-24 01:28:50,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:28:50,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 2214 transitions. [2024-11-24 01:28:50,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-24 01:28:50,887 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:28:50,888 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:28:50,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 01:28:50,888 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:28:50,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:28:50,889 INFO L85 PathProgramCache]: Analyzing trace with hash -2029450763, now seen corresponding path program 1 times [2024-11-24 01:28:50,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:28:50,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269845889] [2024-11-24 01:28:50,889 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:28:50,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:28:50,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:29:59,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:29:59,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:29:59,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269845889] [2024-11-24 01:29:59,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269845889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:29:59,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:29:59,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-24 01:29:59,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206017600] [2024-11-24 01:29:59,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:29:59,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-24 01:29:59,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:29:59,482 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-24 01:29:59,482 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2024-11-24 01:29:59,483 INFO L87 Difference]: Start difference. First operand 1461 states and 2214 transitions. Second operand has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 states have internal predecessors, (54), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-24 01:30:36,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:30:36,932 INFO L93 Difference]: Finished difference Result 2661 states and 3990 transitions. [2024-11-24 01:30:36,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-24 01:30:36,933 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 states have internal predecessors, (54), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 206 [2024-11-24 01:30:36,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:30:36,942 INFO L225 Difference]: With dead ends: 2661 [2024-11-24 01:30:36,942 INFO L226 Difference]: Without dead ends: 1668 [2024-11-24 01:30:36,945 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 35.0s TimeCoverageRelationStatistics Valid=374, Invalid=886, Unknown=0, NotChecked=0, Total=1260 [2024-11-24 01:30:36,946 INFO L435 NwaCegarLoop]: 198 mSDtfsCounter, 867 mSDsluCounter, 1229 mSDsCounter, 0 mSdLazyCounter, 2404 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 1427 SdHoareTripleChecker+Invalid, 2436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:30:36,946 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 1427 Invalid, 2436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2404 Invalid, 0 Unknown, 0 Unchecked, 16.2s Time] [2024-11-24 01:30:36,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2024-11-24 01:30:37,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1450. [2024-11-24 01:30:37,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1450 states, 1123 states have (on average 1.4185218165627782) internal successors, (1593), 1128 states have internal predecessors, (1593), 302 states have call successors, (302), 24 states have call predecessors, (302), 24 states have return successors, (302), 297 states have call predecessors, (302), 302 states have call successors, (302) [2024-11-24 01:30:37,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 2197 transitions. [2024-11-24 01:30:37,108 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 2197 transitions. Word has length 206 [2024-11-24 01:30:37,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:30:37,108 INFO L471 AbstractCegarLoop]: Abstraction has 1450 states and 2197 transitions. [2024-11-24 01:30:37,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 states have internal predecessors, (54), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-24 01:30:37,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 2197 transitions. [2024-11-24 01:30:37,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-24 01:30:37,112 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:30:37,112 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:37,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 01:30:37,112 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:30:37,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:30:37,113 INFO L85 PathProgramCache]: Analyzing trace with hash 2073925045, now seen corresponding path program 1 times [2024-11-24 01:30:37,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:30:37,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070531337] [2024-11-24 01:30:37,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:30:37,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:30:37,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:30:41,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101 [2024-11-24 01:30:41,314 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/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 01:30:41,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 01:30:41,316 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_5e2367c7-5649-4809-a97b-5b952aeb3513/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 01:30:41,323 INFO L158 Benchmark]: Toolchain (without parser) took 620479.71ms. Allocated memory was 142.6MB in the beginning and 1.1GB in the end (delta: 947.9MB). Free memory was 118.3MB in the beginning and 964.5MB in the end (delta: -846.3MB). Peak memory consumption was 675.1MB. Max. memory is 16.1GB. [2024-11-24 01:30:41,324 INFO L158 Benchmark]: CDTParser took 0.51ms. Allocated memory is still 142.6MB. Free memory is still 80.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:30:41,324 INFO L158 Benchmark]: CACSL2BoogieTranslator took 595.28ms. Allocated memory is still 142.6MB. Free memory was 118.0MB in the beginning and 101.7MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-24 01:30:41,324 INFO L158 Benchmark]: Boogie Procedure Inliner took 161.90ms. Allocated memory is still 142.6MB. Free memory was 101.7MB in the beginning and 95.8MB in the end (delta: 5.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 01:30:41,324 INFO L158 Benchmark]: Boogie Preprocessor took 106.52ms. Allocated memory is still 142.6MB. Free memory was 95.8MB in the beginning and 89.5MB in the end (delta: 6.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:30:41,325 INFO L158 Benchmark]: RCFGBuilder took 925.55ms. Allocated memory is still 142.6MB. Free memory was 89.5MB in the beginning and 103.2MB in the end (delta: -13.7MB). Peak memory consumption was 40.0MB. Max. memory is 16.1GB. [2024-11-24 01:30:41,325 INFO L158 Benchmark]: TraceAbstraction took 618681.57ms. Allocated memory was 142.6MB in the beginning and 1.1GB in the end (delta: 947.9MB). Free memory was 102.6MB in the beginning and 964.5MB in the end (delta: -861.9MB). Peak memory consumption was 660.3MB. Max. memory is 16.1GB. [2024-11-24 01:30:41,327 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51ms. Allocated memory is still 142.6MB. Free memory is still 80.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 595.28ms. Allocated memory is still 142.6MB. Free memory was 118.0MB in the beginning and 101.7MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 161.90ms. Allocated memory is still 142.6MB. Free memory was 101.7MB in the beginning and 95.8MB in the end (delta: 5.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 106.52ms. Allocated memory is still 142.6MB. Free memory was 95.8MB in the beginning and 89.5MB in the end (delta: 6.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 925.55ms. Allocated memory is still 142.6MB. Free memory was 89.5MB in the beginning and 103.2MB in the end (delta: -13.7MB). Peak memory consumption was 40.0MB. Max. memory is 16.1GB. * TraceAbstraction took 618681.57ms. Allocated memory was 142.6MB in the beginning and 1.1GB in the end (delta: 947.9MB). Free memory was 102.6MB in the beginning and 964.5MB in the end (delta: -861.9MB). Peak memory consumption was 660.3MB. 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_5e2367c7-5649-4809-a97b-5b952aeb3513/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_5e2367c7-5649-4809-a97b-5b952aeb3513/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_5e2367c7-5649-4809-a97b-5b952aeb3513/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/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_5e2367c7-5649-4809-a97b-5b952aeb3513/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-14.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/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_5e2367c7-5649-4809-a97b-5b952aeb3513/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 a72044eca37c9344cf7356219da330f9c945a1c22555364502c74c325db2c27b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:30:44,254 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:30:44,401 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-24 01:30:44,407 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:30:44,408 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:30:44,443 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:30:44,445 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:30:44,445 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:30:44,446 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:30:44,446 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:30:44,447 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:30:44,448 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:30:44,448 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:30:44,449 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:30:44,449 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:30:44,449 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:30:44,450 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:30:44,450 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:30:44,450 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:30:44,450 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:30:44,450 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:30:44,450 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:30:44,450 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:30:44,450 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-24 01:30:44,451 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-24 01:30:44,451 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-24 01:30:44,451 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:30:44,451 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:30:44,451 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:30:44,451 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:30:44,452 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:30:44,452 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:30:44,452 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:30:44,452 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:30:44,452 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:30:44,452 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:30:44,452 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:30:44,453 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:30:44,453 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:30:44,453 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:30:44,453 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:30:44,453 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:30:44,453 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:30:44,454 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:30:44,454 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-24 01:30:44,454 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-24 01:30:44,454 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:30:44,454 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:30:44,455 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:30:44,455 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:30:44,455 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_5e2367c7-5649-4809-a97b-5b952aeb3513/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 -> a72044eca37c9344cf7356219da330f9c945a1c22555364502c74c325db2c27b [2024-11-24 01:30:44,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:30:44,822 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:30:44,825 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:30:44,827 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:30:44,827 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:30:44,829 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-14.i [2024-11-24 01:30:47,943 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/bin/uautomizer-verify-LYvppIcaGC/data/fa7cea724/54a640208661403c8d15f2a98f647ac1/FLAG34c3f6d7e [2024-11-24 01:30:48,283 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:30:48,288 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-14.i [2024-11-24 01:30:48,307 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/bin/uautomizer-verify-LYvppIcaGC/data/fa7cea724/54a640208661403c8d15f2a98f647ac1/FLAG34c3f6d7e [2024-11-24 01:30:48,333 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/bin/uautomizer-verify-LYvppIcaGC/data/fa7cea724/54a640208661403c8d15f2a98f647ac1 [2024-11-24 01:30:48,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:30:48,339 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:30:48,341 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:30:48,341 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:30:48,346 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:30:48,347 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:30:48" (1/1) ... [2024-11-24 01:30:48,349 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f83d2f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:48, skipping insertion in model container [2024-11-24 01:30:48,350 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:30:48" (1/1) ... [2024-11-24 01:30:48,382 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:30:48,576 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_5e2367c7-5649-4809-a97b-5b952aeb3513/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-14.i[916,929] [2024-11-24 01:30:48,727 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:30:48,754 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:30:48,767 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_5e2367c7-5649-4809-a97b-5b952aeb3513/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-14.i[916,929] [2024-11-24 01:30:48,825 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:30:48,851 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:30:48,851 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:48 WrapperNode [2024-11-24 01:30:48,851 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:30:48,856 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:30:48,856 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:30:48,858 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:30:48,869 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:48" (1/1) ... [2024-11-24 01:30:48,888 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:48" (1/1) ... [2024-11-24 01:30:48,941 INFO L138 Inliner]: procedures = 27, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 204 [2024-11-24 01:30:48,945 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:30:48,946 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:30:48,946 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:30:48,946 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:30:48,964 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:48" (1/1) ... [2024-11-24 01:30:48,968 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:48" (1/1) ... [2024-11-24 01:30:48,975 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:48" (1/1) ... [2024-11-24 01:30:49,003 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 01:30:49,007 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:48" (1/1) ... [2024-11-24 01:30:49,008 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:48" (1/1) ... [2024-11-24 01:30:49,027 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:48" (1/1) ... [2024-11-24 01:30:49,031 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:48" (1/1) ... [2024-11-24 01:30:49,039 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:48" (1/1) ... [2024-11-24 01:30:49,045 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:48" (1/1) ... [2024-11-24 01:30:49,050 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:48" (1/1) ... [2024-11-24 01:30:49,056 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:30:49,057 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:30:49,058 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:30:49,058 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:30:49,062 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:48" (1/1) ... [2024-11-24 01:30:49,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:30:49,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:30:49,105 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:30:49,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:30:49,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:30:49,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-24 01:30:49,142 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 01:30:49,143 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 01:30:49,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:30:49,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:30:49,276 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:30:49,278 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:30:51,314 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-11-24 01:30:51,315 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:30:51,335 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:30:51,335 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 01:30:51,336 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:30:51 BoogieIcfgContainer [2024-11-24 01:30:51,336 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:30:51,341 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:30:51,341 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:30:51,348 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:30:51,348 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:30:48" (1/3) ... [2024-11-24 01:30:51,349 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62f9c8f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:30:51, skipping insertion in model container [2024-11-24 01:30:51,350 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:48" (2/3) ... [2024-11-24 01:30:51,350 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62f9c8f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:30:51, skipping insertion in model container [2024-11-24 01:30:51,351 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:30:51" (3/3) ... [2024-11-24 01:30:51,353 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-while_file-14.i [2024-11-24 01:30:51,371 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:30:51,373 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_100-while_file-14.i that has 2 procedures, 89 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 01:30:51,456 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:30:51,473 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;@73e275db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:30:51,473 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 01:30:51,479 INFO L276 IsEmpty]: Start isEmpty. Operand has 89 states, 55 states have (on average 1.4181818181818182) internal successors, (78), 56 states have internal predecessors, (78), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-24 01:30:51,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-24 01:30:51,496 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:30:51,497 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:51,498 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:30:51,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:30:51,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1318783381, now seen corresponding path program 1 times [2024-11-24 01:30:51,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:30:51,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [548696664] [2024-11-24 01:30:51,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:30:51,532 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 01:30:51,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-24 01:30:51,537 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/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 01:30:51,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/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 01:30:52,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:30:52,107 INFO L256 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 01:30:52,120 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:30:52,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 704 proven. 0 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2024-11-24 01:30:52,226 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:30:52,227 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:30:52,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [548696664] [2024-11-24 01:30:52,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [548696664] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:30:52,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:30:52,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 01:30:52,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344966136] [2024-11-24 01:30:52,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:30:52,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 01:30:52,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:30:52,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 01:30:52,269 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:30:52,271 INFO L87 Difference]: Start difference. First operand has 89 states, 55 states have (on average 1.4181818181818182) internal successors, (78), 56 states have internal predecessors, (78), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-24 01:30:52,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:30:52,326 INFO L93 Difference]: Finished difference Result 170 states and 303 transitions. [2024-11-24 01:30:52,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 01:30:52,328 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 196 [2024-11-24 01:30:52,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:30:52,344 INFO L225 Difference]: With dead ends: 170 [2024-11-24 01:30:52,344 INFO L226 Difference]: Without dead ends: 84 [2024-11-24 01:30:52,350 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 195 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 01:30:52,355 INFO L435 NwaCegarLoop]: 130 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, 130 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 01:30:52,358 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:30:52,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-24 01:30:52,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-11-24 01:30:52,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 51 states have internal predecessors, (68), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-24 01:30:52,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 130 transitions. [2024-11-24 01:30:52,427 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 130 transitions. Word has length 196 [2024-11-24 01:30:52,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:30:52,428 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 130 transitions. [2024-11-24 01:30:52,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-24 01:30:52,428 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 130 transitions. [2024-11-24 01:30:52,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-24 01:30:52,436 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:30:52,436 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:52,451 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/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 01:30:52,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/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 01:30:52,638 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:30:52,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:30:52,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1504631469, now seen corresponding path program 1 times [2024-11-24 01:30:52,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:30:52,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1983818648] [2024-11-24 01:30:52,640 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:30:52,640 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 01:30:52,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-24 01:30:52,643 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/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 01:30:52,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/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 01:30:53,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:30:53,171 INFO L256 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 01:30:53,180 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:30:55,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:30:55,967 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:30:55,967 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:30:55,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1983818648] [2024-11-24 01:30:55,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1983818648] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:30:55,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:30:55,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:30:55,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141197745] [2024-11-24 01:30:55,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:30:55,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:30:55,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:30:55,971 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:30:55,971 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:30:55,972 INFO L87 Difference]: Start difference. First operand 84 states and 130 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:30:59,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:30:59,072 INFO L93 Difference]: Finished difference Result 255 states and 394 transitions. [2024-11-24 01:30:59,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:30:59,094 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 196 [2024-11-24 01:30:59,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:30:59,098 INFO L225 Difference]: With dead ends: 255 [2024-11-24 01:30:59,098 INFO L226 Difference]: Without dead ends: 174 [2024-11-24 01:30:59,099 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:30:59,100 INFO L435 NwaCegarLoop]: 128 mSDtfsCounter, 106 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:30:59,101 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 360 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-24 01:30:59,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-11-24 01:30:59,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 163. [2024-11-24 01:30:59,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 98 states have (on average 1.336734693877551) internal successors, (131), 98 states have internal predecessors, (131), 62 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-24 01:30:59,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 255 transitions. [2024-11-24 01:30:59,150 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 255 transitions. Word has length 196 [2024-11-24 01:30:59,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:30:59,151 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 255 transitions. [2024-11-24 01:30:59,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:30:59,152 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 255 transitions. [2024-11-24 01:30:59,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-24 01:30:59,155 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:30:59,156 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:59,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/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 01:30:59,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/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 01:30:59,356 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:30:59,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:30:59,357 INFO L85 PathProgramCache]: Analyzing trace with hash -184312273, now seen corresponding path program 1 times [2024-11-24 01:30:59,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:30:59,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [667464105] [2024-11-24 01:30:59,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:30:59,358 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 01:30:59,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-24 01:30:59,360 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/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 01:30:59,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/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 01:30:59,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:30:59,840 INFO L256 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:30:59,846 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:31:01,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:31:01,071 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:31:01,071 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:31:01,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [667464105] [2024-11-24 01:31:01,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [667464105] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:31:01,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:31:01,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:31:01,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357727790] [2024-11-24 01:31:01,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:31:01,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:31:01,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:31:01,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:31:01,076 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:31:01,076 INFO L87 Difference]: Start difference. First operand 163 states and 255 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:31:02,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-24 01:31:03,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:31:03,654 INFO L93 Difference]: Finished difference Result 404 states and 634 transitions. [2024-11-24 01:31:03,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:31:03,656 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 196 [2024-11-24 01:31:03,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:31:03,660 INFO L225 Difference]: With dead ends: 404 [2024-11-24 01:31:03,660 INFO L226 Difference]: Without dead ends: 244 [2024-11-24 01:31:03,662 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 193 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 01:31:03,663 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 35 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:31:03,664 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 358 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-24 01:31:03,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-11-24 01:31:03,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 242. [2024-11-24 01:31:03,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 145 states have (on average 1.3310344827586207) internal successors, (193), 145 states have internal predecessors, (193), 93 states have call successors, (93), 3 states have call predecessors, (93), 3 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-24 01:31:03,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 379 transitions. [2024-11-24 01:31:03,728 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 379 transitions. Word has length 196 [2024-11-24 01:31:03,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:31:03,729 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 379 transitions. [2024-11-24 01:31:03,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:31:03,730 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 379 transitions. [2024-11-24 01:31:03,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-24 01:31:03,733 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:31:03,733 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:31:03,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/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)] Forceful destruction successful, exit code 0 [2024-11-24 01:31:03,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/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 01:31:03,934 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:31:03,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:31:03,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1824677051, now seen corresponding path program 1 times [2024-11-24 01:31:03,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:31:03,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1276615432] [2024-11-24 01:31:03,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:31:03,936 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 01:31:03,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-24 01:31:03,943 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/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 01:31:03,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2367c7-5649-4809-a97b-5b952aeb3513/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 (5)] Waiting until timeout for monitored process [2024-11-24 01:31:04,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:31:04,672 INFO L256 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-24 01:31:04,704 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:32:07,646 WARN L286 SmtUtils]: Spent 5.18s on a formula simplification. DAG size of input: 85 DAG size of output: 82 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-24 01:32:28,503 WARN L286 SmtUtils]: Spent 6.44s on a formula simplification. DAG size of input: 87 DAG size of output: 86 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-24 01:32:51,610 WARN L286 SmtUtils]: Spent 6.76s on a formula simplification. DAG size of input: 89 DAG size of output: 88 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-24 01:33:40,233 WARN L286 SmtUtils]: Spent 9.48s on a formula simplification. DAG size of input: 94 DAG size of output: 93 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-24 01:34:12,745 WARN L286 SmtUtils]: Spent 8.17s on a formula simplification that was a NOOP. DAG size: 96 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)