./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-44.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_b44b8d71-5d60-41f7-a1ae-ac8b41bf9459/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b44b8d71-5d60-41f7-a1ae-ac8b41bf9459/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_b44b8d71-5d60-41f7-a1ae-ac8b41bf9459/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b44b8d71-5d60-41f7-a1ae-ac8b41bf9459/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-44.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b44b8d71-5d60-41f7-a1ae-ac8b41bf9459/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_b44b8d71-5d60-41f7-a1ae-ac8b41bf9459/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 cc3984a70cd12d1d8d9819c7a441be5e9fcf1734b23271ea13bfbb9a60a77e9c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 02:09:57,881 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 02:09:57,993 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b44b8d71-5d60-41f7-a1ae-ac8b41bf9459/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 02:09:58,004 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 02:09:58,004 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 02:09:58,052 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 02:09:58,054 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 02:09:58,054 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 02:09:58,055 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 02:09:58,055 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 02:09:58,056 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 02:09:58,056 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 02:09:58,057 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 02:09:58,057 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 02:09:58,058 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 02:09:58,058 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 02:09:58,058 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 02:09:58,059 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 02:09:58,059 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 02:09:58,059 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 02:09:58,059 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 02:09:58,059 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 02:09:58,059 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 02:09:58,059 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 02:09:58,059 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 02:09:58,059 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 02:09:58,059 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 02:09:58,060 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 02:09:58,060 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 02:09:58,060 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 02:09:58,060 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 02:09:58,060 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 02:09:58,060 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 02:09:58,060 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 02:09:58,060 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 02:09:58,060 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 02:09:58,060 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 02:09:58,061 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 02:09:58,062 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 02:09:58,062 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 02:09:58,062 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 02:09:58,062 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 02:09:58,062 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 02:09:58,062 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 02:09:58,062 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 02:09:58,063 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 02:09:58,063 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 02:09:58,063 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 02:09:58,063 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_b44b8d71-5d60-41f7-a1ae-ac8b41bf9459/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 -> cc3984a70cd12d1d8d9819c7a441be5e9fcf1734b23271ea13bfbb9a60a77e9c [2024-11-24 02:09:58,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 02:09:58,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 02:09:58,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 02:09:58,409 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 02:09:58,410 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 02:09:58,411 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b44b8d71-5d60-41f7-a1ae-ac8b41bf9459/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-44.i [2024-11-24 02:10:01,435 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b44b8d71-5d60-41f7-a1ae-ac8b41bf9459/bin/uautomizer-verify-LYvppIcaGC/data/79d47f93e/e90bc69373904e388177e7b6970aa6e2/FLAGa45358389 [2024-11-24 02:10:01,933 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 02:10:01,937 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b44b8d71-5d60-41f7-a1ae-ac8b41bf9459/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-44.i [2024-11-24 02:10:01,959 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b44b8d71-5d60-41f7-a1ae-ac8b41bf9459/bin/uautomizer-verify-LYvppIcaGC/data/79d47f93e/e90bc69373904e388177e7b6970aa6e2/FLAGa45358389 [2024-11-24 02:10:01,981 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b44b8d71-5d60-41f7-a1ae-ac8b41bf9459/bin/uautomizer-verify-LYvppIcaGC/data/79d47f93e/e90bc69373904e388177e7b6970aa6e2 [2024-11-24 02:10:01,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 02:10:01,986 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 02:10:01,988 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 02:10:01,988 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 02:10:01,997 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 02:10:01,998 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 02:10:01" (1/1) ... [2024-11-24 02:10:01,999 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24aaf659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:10:01, skipping insertion in model container [2024-11-24 02:10:02,000 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 02:10:01" (1/1) ... [2024-11-24 02:10:02,050 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 02:10:02,234 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_b44b8d71-5d60-41f7-a1ae-ac8b41bf9459/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-44.i[916,929] [2024-11-24 02:10:02,394 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 02:10:02,410 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 02:10:02,422 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_b44b8d71-5d60-41f7-a1ae-ac8b41bf9459/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-44.i[916,929] [2024-11-24 02:10:02,499 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 02:10:02,528 INFO L204 MainTranslator]: Completed translation [2024-11-24 02:10:02,530 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:10:02 WrapperNode [2024-11-24 02:10:02,531 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 02:10:02,532 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 02:10:02,533 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 02:10:02,533 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 02:10:02,544 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:10:02" (1/1) ... [2024-11-24 02:10:02,567 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:10:02" (1/1) ... [2024-11-24 02:10:02,627 INFO L138 Inliner]: procedures = 26, calls = 94, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 521 [2024-11-24 02:10:02,628 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 02:10:02,628 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 02:10:02,628 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 02:10:02,629 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 02:10:02,639 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:10:02" (1/1) ... [2024-11-24 02:10:02,639 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:10:02" (1/1) ... [2024-11-24 02:10:02,646 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:10:02" (1/1) ... [2024-11-24 02:10:02,674 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-24 02:10:02,674 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:10:02" (1/1) ... [2024-11-24 02:10:02,675 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:10:02" (1/1) ... [2024-11-24 02:10:02,717 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:10:02" (1/1) ... [2024-11-24 02:10:02,725 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:10:02" (1/1) ... [2024-11-24 02:10:02,737 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:10:02" (1/1) ... [2024-11-24 02:10:02,744 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:10:02" (1/1) ... [2024-11-24 02:10:02,747 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:10:02" (1/1) ... [2024-11-24 02:10:02,761 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 02:10:02,761 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 02:10:02,762 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 02:10:02,762 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 02:10:02,763 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:10:02" (1/1) ... [2024-11-24 02:10:02,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 02:10:02,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b44b8d71-5d60-41f7-a1ae-ac8b41bf9459/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:10:02,799 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b44b8d71-5d60-41f7-a1ae-ac8b41bf9459/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 02:10:02,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b44b8d71-5d60-41f7-a1ae-ac8b41bf9459/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 02:10:02,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 02:10:02,830 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 02:10:02,830 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 02:10:02,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 02:10:02,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 02:10:02,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 02:10:02,987 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 02:10:02,990 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 02:10:04,267 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-24 02:10:04,267 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 02:10:04,299 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 02:10:04,299 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 02:10:04,300 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 02:10:04 BoogieIcfgContainer [2024-11-24 02:10:04,300 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 02:10:04,303 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 02:10:04,307 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 02:10:04,313 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 02:10:04,313 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 02:10:01" (1/3) ... [2024-11-24 02:10:04,314 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44d5219d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 02:10:04, skipping insertion in model container [2024-11-24 02:10:04,316 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:10:02" (2/3) ... [2024-11-24 02:10:04,316 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44d5219d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 02:10:04, skipping insertion in model container [2024-11-24 02:10:04,316 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 02:10:04" (3/3) ... [2024-11-24 02:10:04,319 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-44.i [2024-11-24 02:10:04,339 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 02:10:04,343 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-44.i that has 2 procedures, 223 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 02:10:04,481 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 02:10:04,496 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;@8c051e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 02:10:04,499 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 02:10:04,505 INFO L276 IsEmpty]: Start isEmpty. Operand has 223 states, 139 states have (on average 1.5179856115107915) internal successors, (211), 140 states have internal predecessors, (211), 81 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-24 02:10:04,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2024-11-24 02:10:04,548 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:10:04,549 INFO L218 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:10:04,549 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:10:04,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:10:04,558 INFO L85 PathProgramCache]: Analyzing trace with hash 611313797, now seen corresponding path program 1 times [2024-11-24 02:10:04,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:10:04,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929989366] [2024-11-24 02:10:04,569 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:10:04,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:10:04,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:10:05,634 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 160 refuted. 0 times theorem prover too weak. 12800 trivial. 0 not checked. [2024-11-24 02:10:05,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:10:05,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929989366] [2024-11-24 02:10:05,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929989366] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:10:05,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113624547] [2024-11-24 02:10:05,636 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:10:05,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:10:05,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b44b8d71-5d60-41f7-a1ae-ac8b41bf9459/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:10:05,642 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b44b8d71-5d60-41f7-a1ae-ac8b41bf9459/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:10:05,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b44b8d71-5d60-41f7-a1ae-ac8b41bf9459/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 02:10:06,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:10:06,194 INFO L256 TraceCheckSpWp]: Trace formula consists of 1096 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 02:10:06,236 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:10:06,336 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 12800 trivial. 0 not checked. [2024-11-24 02:10:06,337 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 02:10:06,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113624547] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:10:06,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 02:10:06,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-24 02:10:06,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848471389] [2024-11-24 02:10:06,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:10:06,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 02:10:06,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:10:06,378 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 02:10:06,379 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 02:10:06,383 INFO L87 Difference]: Start difference. First operand has 223 states, 139 states have (on average 1.5179856115107915) internal successors, (211), 140 states have internal predecessors, (211), 81 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) Second operand has 2 states, 2 states have (on average 49.0) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (81), 2 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 2 states have call successors, (81) [2024-11-24 02:10:06,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:10:06,451 INFO L93 Difference]: Finished difference Result 435 states and 813 transitions. [2024-11-24 02:10:06,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 02:10:06,454 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 49.0) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (81), 2 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 2 states have call successors, (81) Word has length 498 [2024-11-24 02:10:06,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:10:06,464 INFO L225 Difference]: With dead ends: 435 [2024-11-24 02:10:06,464 INFO L226 Difference]: Without dead ends: 215 [2024-11-24 02:10:06,470 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 499 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 02:10:06,474 INFO L435 NwaCegarLoop]: 356 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, 356 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 02:10:06,475 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 02:10:06,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2024-11-24 02:10:06,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2024-11-24 02:10:06,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 132 states have (on average 1.4696969696969697) internal successors, (194), 132 states have internal predecessors, (194), 81 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-24 02:10:06,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 356 transitions. [2024-11-24 02:10:06,588 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 356 transitions. Word has length 498 [2024-11-24 02:10:06,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:10:06,588 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 356 transitions. [2024-11-24 02:10:06,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 49.0) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (81), 2 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 2 states have call successors, (81) [2024-11-24 02:10:06,591 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 356 transitions. [2024-11-24 02:10:06,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2024-11-24 02:10:06,613 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:10:06,614 INFO L218 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:10:06,626 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b44b8d71-5d60-41f7-a1ae-ac8b41bf9459/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 02:10:06,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b44b8d71-5d60-41f7-a1ae-ac8b41bf9459/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-24 02:10:06,815 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:10:06,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:10:06,817 INFO L85 PathProgramCache]: Analyzing trace with hash -946321169, now seen corresponding path program 1 times [2024-11-24 02:10:06,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:10:06,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554127222] [2024-11-24 02:10:06,817 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:10:06,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:10:07,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:10:07,646 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2024-11-24 02:10:07,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:10:07,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554127222] [2024-11-24 02:10:07,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554127222] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:10:07,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:10:07,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 02:10:07,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006000943] [2024-11-24 02:10:07,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:10:07,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 02:10:07,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:10:07,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 02:10:07,655 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:10:07,655 INFO L87 Difference]: Start difference. First operand 215 states and 356 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-11-24 02:10:07,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:10:07,789 INFO L93 Difference]: Finished difference Result 630 states and 1045 transitions. [2024-11-24 02:10:07,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 02:10:07,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 498 [2024-11-24 02:10:07,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:10:07,800 INFO L225 Difference]: With dead ends: 630 [2024-11-24 02:10:07,803 INFO L226 Difference]: Without dead ends: 418 [2024-11-24 02:10:07,805 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:10:07,806 INFO L435 NwaCegarLoop]: 674 mSDtfsCounter, 340 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 02:10:07,807 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 1010 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 02:10:07,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2024-11-24 02:10:07,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 415. [2024-11-24 02:10:07,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 250 states have (on average 1.452) internal successors, (363), 250 states have internal predecessors, (363), 162 states have call successors, (162), 2 states have call predecessors, (162), 2 states have return successors, (162), 162 states have call predecessors, (162), 162 states have call successors, (162) [2024-11-24 02:10:07,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 687 transitions. [2024-11-24 02:10:07,928 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 687 transitions. Word has length 498 [2024-11-24 02:10:07,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:10:07,931 INFO L471 AbstractCegarLoop]: Abstraction has 415 states and 687 transitions. [2024-11-24 02:10:07,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-11-24 02:10:07,933 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 687 transitions. [2024-11-24 02:10:07,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2024-11-24 02:10:07,946 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:10:07,946 INFO L218 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:10:07,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 02:10:07,946 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:10:07,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:10:07,947 INFO L85 PathProgramCache]: Analyzing trace with hash 226373371, now seen corresponding path program 1 times [2024-11-24 02:10:07,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:10:07,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424472303] [2024-11-24 02:10:07,947 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:10:07,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:10:08,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:10:08,480 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2024-11-24 02:10:08,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:10:08,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424472303] [2024-11-24 02:10:08,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424472303] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:10:08,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:10:08,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 02:10:08,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852175201] [2024-11-24 02:10:08,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:10:08,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 02:10:08,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:10:08,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 02:10:08,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:10:08,486 INFO L87 Difference]: Start difference. First operand 415 states and 687 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-11-24 02:10:08,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:10:08,641 INFO L93 Difference]: Finished difference Result 1114 states and 1835 transitions. [2024-11-24 02:10:08,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 02:10:08,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 499 [2024-11-24 02:10:08,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:10:08,686 INFO L225 Difference]: With dead ends: 1114 [2024-11-24 02:10:08,686 INFO L226 Difference]: Without dead ends: 702 [2024-11-24 02:10:08,688 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:10:08,689 INFO L435 NwaCegarLoop]: 515 mSDtfsCounter, 242 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 02:10:08,689 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 843 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 02:10:08,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2024-11-24 02:10:08,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 698. [2024-11-24 02:10:08,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 421 states have (on average 1.4275534441805227) internal successors, (601), 423 states have internal predecessors, (601), 272 states have call successors, (272), 4 states have call predecessors, (272), 4 states have return successors, (272), 270 states have call predecessors, (272), 272 states have call successors, (272) [2024-11-24 02:10:08,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1145 transitions. [2024-11-24 02:10:08,873 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1145 transitions. Word has length 499 [2024-11-24 02:10:08,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:10:08,876 INFO L471 AbstractCegarLoop]: Abstraction has 698 states and 1145 transitions. [2024-11-24 02:10:08,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-11-24 02:10:08,876 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1145 transitions. [2024-11-24 02:10:08,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2024-11-24 02:10:08,888 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:10:08,889 INFO L218 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:10:08,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 02:10:08,889 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:10:08,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:10:08,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1798372039, now seen corresponding path program 1 times [2024-11-24 02:10:08,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:10:08,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693049491] [2024-11-24 02:10:08,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:10:08,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:10:09,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:10:09,323 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2024-11-24 02:10:09,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:10:09,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693049491] [2024-11-24 02:10:09,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693049491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:10:09,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:10:09,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 02:10:09,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230610285] [2024-11-24 02:10:09,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:10:09,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 02:10:09,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:10:09,329 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 02:10:09,329 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:10:09,329 INFO L87 Difference]: Start difference. First operand 698 states and 1145 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-11-24 02:10:09,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:10:09,543 INFO L93 Difference]: Finished difference Result 2088 states and 3429 transitions. [2024-11-24 02:10:09,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 02:10:09,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 499 [2024-11-24 02:10:09,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:10:09,564 INFO L225 Difference]: With dead ends: 2088 [2024-11-24 02:10:09,564 INFO L226 Difference]: Without dead ends: 1393 [2024-11-24 02:10:09,571 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:10:09,572 INFO L435 NwaCegarLoop]: 394 mSDtfsCounter, 330 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 02:10:09,572 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 740 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 02:10:09,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2024-11-24 02:10:09,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 1391. [2024-11-24 02:10:09,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 838 states have (on average 1.4248210023866348) internal successors, (1194), 842 states have internal predecessors, (1194), 544 states have call successors, (544), 8 states have call predecessors, (544), 8 states have return successors, (544), 540 states have call predecessors, (544), 544 states have call successors, (544) [2024-11-24 02:10:09,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 2282 transitions. [2024-11-24 02:10:09,911 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 2282 transitions. Word has length 499 [2024-11-24 02:10:09,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:10:09,912 INFO L471 AbstractCegarLoop]: Abstraction has 1391 states and 2282 transitions. [2024-11-24 02:10:09,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-11-24 02:10:09,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 2282 transitions. [2024-11-24 02:10:09,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2024-11-24 02:10:09,919 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:10:09,920 INFO L218 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:10:09,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 02:10:09,920 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:10:09,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:10:09,922 INFO L85 PathProgramCache]: Analyzing trace with hash 651228091, now seen corresponding path program 1 times [2024-11-24 02:10:09,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:10:09,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103554473] [2024-11-24 02:10:09,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:10:09,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:10:10,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:10:11,063 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2024-11-24 02:10:11,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:10:11,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103554473] [2024-11-24 02:10:11,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103554473] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:10:11,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:10:11,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 02:10:11,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006063051] [2024-11-24 02:10:11,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:10:11,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 02:10:11,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:10:11,066 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 02:10:11,066 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:10:11,066 INFO L87 Difference]: Start difference. First operand 1391 states and 2282 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-11-24 02:10:12,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:10:12,432 INFO L93 Difference]: Finished difference Result 5153 states and 8451 transitions. [2024-11-24 02:10:12,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 02:10:12,433 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 499 [2024-11-24 02:10:12,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:10:12,474 INFO L225 Difference]: With dead ends: 5153 [2024-11-24 02:10:12,474 INFO L226 Difference]: Without dead ends: 3765 [2024-11-24 02:10:12,482 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:10:12,483 INFO L435 NwaCegarLoop]: 454 mSDtfsCounter, 633 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 933 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-24 02:10:12,484 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 933 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-24 02:10:12,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3765 states. [2024-11-24 02:10:13,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3765 to 2367. [2024-11-24 02:10:13,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2367 states, 1502 states have (on average 1.4567243675099868) internal successors, (2188), 1514 states have internal predecessors, (2188), 848 states have call successors, (848), 16 states have call predecessors, (848), 16 states have return successors, (848), 836 states have call predecessors, (848), 848 states have call successors, (848) [2024-11-24 02:10:13,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2367 states to 2367 states and 3884 transitions. [2024-11-24 02:10:13,097 INFO L78 Accepts]: Start accepts. Automaton has 2367 states and 3884 transitions. Word has length 499 [2024-11-24 02:10:13,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:10:13,098 INFO L471 AbstractCegarLoop]: Abstraction has 2367 states and 3884 transitions. [2024-11-24 02:10:13,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-11-24 02:10:13,099 INFO L276 IsEmpty]: Start isEmpty. Operand 2367 states and 3884 transitions. [2024-11-24 02:10:13,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2024-11-24 02:10:13,105 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:10:13,105 INFO L218 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:10:13,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 02:10:13,105 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:10:13,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:10:13,107 INFO L85 PathProgramCache]: Analyzing trace with hash -166420359, now seen corresponding path program 1 times [2024-11-24 02:10:13,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:10:13,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270612679] [2024-11-24 02:10:13,108 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:10:13,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:10:13,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:10:13,945 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2024-11-24 02:10:13,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:10:13,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270612679] [2024-11-24 02:10:13,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270612679] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:10:13,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:10:13,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 02:10:13,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120130746] [2024-11-24 02:10:13,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:10:13,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 02:10:13,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:10:13,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 02:10:13,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:10:13,952 INFO L87 Difference]: Start difference. First operand 2367 states and 3884 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-11-24 02:10:15,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:10:15,489 INFO L93 Difference]: Finished difference Result 7475 states and 12201 transitions. [2024-11-24 02:10:15,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 02:10:15,490 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 499 [2024-11-24 02:10:15,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:10:15,535 INFO L225 Difference]: With dead ends: 7475 [2024-11-24 02:10:15,535 INFO L226 Difference]: Without dead ends: 5111 [2024-11-24 02:10:15,548 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:10:15,549 INFO L435 NwaCegarLoop]: 457 mSDtfsCounter, 627 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-24 02:10:15,550 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 936 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-24 02:10:15,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5111 states. [2024-11-24 02:10:16,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5111 to 3263. [2024-11-24 02:10:16,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3263 states, 2086 states have (on average 1.4439117929050815) internal successors, (3012), 2106 states have internal predecessors, (3012), 1144 states have call successors, (1144), 32 states have call predecessors, (1144), 32 states have return successors, (1144), 1124 states have call predecessors, (1144), 1144 states have call successors, (1144) [2024-11-24 02:10:16,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3263 states to 3263 states and 5300 transitions. [2024-11-24 02:10:16,325 INFO L78 Accepts]: Start accepts. Automaton has 3263 states and 5300 transitions. Word has length 499 [2024-11-24 02:10:16,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:10:16,327 INFO L471 AbstractCegarLoop]: Abstraction has 3263 states and 5300 transitions. [2024-11-24 02:10:16,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-11-24 02:10:16,327 INFO L276 IsEmpty]: Start isEmpty. Operand 3263 states and 5300 transitions. [2024-11-24 02:10:16,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2024-11-24 02:10:16,334 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:10:16,334 INFO L218 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:10:16,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 02:10:16,335 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:10:16,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:10:16,336 INFO L85 PathProgramCache]: Analyzing trace with hash 2134402231, now seen corresponding path program 1 times [2024-11-24 02:10:16,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:10:16,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596881974] [2024-11-24 02:10:16,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:10:16,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:10:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:10:17,035 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2024-11-24 02:10:17,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:10:17,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596881974] [2024-11-24 02:10:17,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596881974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:10:17,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:10:17,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 02:10:17,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294043892] [2024-11-24 02:10:17,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:10:17,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 02:10:17,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:10:17,040 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 02:10:17,040 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:10:17,041 INFO L87 Difference]: Start difference. First operand 3263 states and 5300 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-11-24 02:10:18,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:10:18,656 INFO L93 Difference]: Finished difference Result 11525 states and 18639 transitions. [2024-11-24 02:10:18,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 02:10:18,657 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 499 [2024-11-24 02:10:18,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:10:18,738 INFO L225 Difference]: With dead ends: 11525 [2024-11-24 02:10:18,738 INFO L226 Difference]: Without dead ends: 8265 [2024-11-24 02:10:18,758 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 02:10:18,759 INFO L435 NwaCegarLoop]: 525 mSDtfsCounter, 477 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 02:10:18,760 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 1324 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 02:10:18,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8265 states. [2024-11-24 02:10:20,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8265 to 8213. [2024-11-24 02:10:20,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8213 states, 5620 states have (on average 1.4768683274021353) internal successors, (8300), 5688 states have internal predecessors, (8300), 2488 states have call successors, (2488), 104 states have call predecessors, (2488), 104 states have return successors, (2488), 2420 states have call predecessors, (2488), 2488 states have call successors, (2488) [2024-11-24 02:10:20,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8213 states to 8213 states and 13276 transitions. [2024-11-24 02:10:20,189 INFO L78 Accepts]: Start accepts. Automaton has 8213 states and 13276 transitions. Word has length 499 [2024-11-24 02:10:20,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:10:20,191 INFO L471 AbstractCegarLoop]: Abstraction has 8213 states and 13276 transitions. [2024-11-24 02:10:20,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-11-24 02:10:20,191 INFO L276 IsEmpty]: Start isEmpty. Operand 8213 states and 13276 transitions. [2024-11-24 02:10:20,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2024-11-24 02:10:20,204 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:10:20,204 INFO L218 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:10:20,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 02:10:20,205 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:10:20,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:10:20,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1886255737, now seen corresponding path program 1 times [2024-11-24 02:10:20,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:10:20,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831455434] [2024-11-24 02:10:20,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:10:20,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:10:20,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:10:21,316 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 159 proven. 81 refuted. 0 times theorem prover too weak. 12720 trivial. 0 not checked. [2024-11-24 02:10:21,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:10:21,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831455434] [2024-11-24 02:10:21,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831455434] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:10:21,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750610880] [2024-11-24 02:10:21,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:10:21,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:10:21,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b44b8d71-5d60-41f7-a1ae-ac8b41bf9459/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:10:21,321 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b44b8d71-5d60-41f7-a1ae-ac8b41bf9459/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:10:21,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b44b8d71-5d60-41f7-a1ae-ac8b41bf9459/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 02:10:21,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:10:21,783 INFO L256 TraceCheckSpWp]: Trace formula consists of 1097 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 02:10:21,799 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:10:22,160 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 2270 proven. 21 refuted. 0 times theorem prover too weak. 10669 trivial. 0 not checked. [2024-11-24 02:10:22,160 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:10:22,899 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 219 proven. 21 refuted. 0 times theorem prover too weak. 12720 trivial. 0 not checked. [2024-11-24 02:10:22,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750610880] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:10:22,900 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:10:22,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-24 02:10:22,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639477343] [2024-11-24 02:10:22,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:10:22,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 02:10:22,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:10:22,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 02:10:22,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-24 02:10:22,905 INFO L87 Difference]: Start difference. First operand 8213 states and 13276 transitions. Second operand has 9 states, 9 states have (on average 18.444444444444443) internal successors, (166), 9 states have internal predecessors, (166), 4 states have call successors, (115), 2 states have call predecessors, (115), 4 states have return successors, (117), 4 states have call predecessors, (117), 4 states have call successors, (117) [2024-11-24 02:10:25,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:10:25,694 INFO L93 Difference]: Finished difference Result 16679 states and 26793 transitions. [2024-11-24 02:10:25,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 02:10:25,699 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.444444444444443) internal successors, (166), 9 states have internal predecessors, (166), 4 states have call successors, (115), 2 states have call predecessors, (115), 4 states have return successors, (117), 4 states have call predecessors, (117), 4 states have call successors, (117) Word has length 499 [2024-11-24 02:10:25,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:10:25,816 INFO L225 Difference]: With dead ends: 16679 [2024-11-24 02:10:25,817 INFO L226 Difference]: Without dead ends: 8469 [2024-11-24 02:10:25,857 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1010 GetRequests, 995 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2024-11-24 02:10:25,858 INFO L435 NwaCegarLoop]: 264 mSDtfsCounter, 328 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-24 02:10:25,859 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 635 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-24 02:10:25,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8469 states. [2024-11-24 02:10:27,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8469 to 8261. [2024-11-24 02:10:27,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8261 states, 5656 states have (on average 1.4483734087694484) internal successors, (8192), 5724 states have internal predecessors, (8192), 2488 states have call successors, (2488), 116 states have call predecessors, (2488), 116 states have return successors, (2488), 2420 states have call predecessors, (2488), 2488 states have call successors, (2488) [2024-11-24 02:10:27,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8261 states to 8261 states and 13168 transitions. [2024-11-24 02:10:27,725 INFO L78 Accepts]: Start accepts. Automaton has 8261 states and 13168 transitions. Word has length 499 [2024-11-24 02:10:27,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:10:27,728 INFO L471 AbstractCegarLoop]: Abstraction has 8261 states and 13168 transitions. [2024-11-24 02:10:27,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.444444444444443) internal successors, (166), 9 states have internal predecessors, (166), 4 states have call successors, (115), 2 states have call predecessors, (115), 4 states have return successors, (117), 4 states have call predecessors, (117), 4 states have call successors, (117) [2024-11-24 02:10:27,737 INFO L276 IsEmpty]: Start isEmpty. Operand 8261 states and 13168 transitions. [2024-11-24 02:10:27,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2024-11-24 02:10:27,751 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:10:27,751 INFO L218 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:10:27,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b44b8d71-5d60-41f7-a1ae-ac8b41bf9459/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 02:10:27,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b44b8d71-5d60-41f7-a1ae-ac8b41bf9459/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:10:27,956 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:10:27,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:10:27,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1905628309, now seen corresponding path program 1 times [2024-11-24 02:10:27,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:10:27,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837170359] [2024-11-24 02:10:27,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:10:27,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:10:28,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:10:28,972 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 165 proven. 75 refuted. 0 times theorem prover too weak. 12720 trivial. 0 not checked. [2024-11-24 02:10:28,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:10:28,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837170359] [2024-11-24 02:10:28,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837170359] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:10:28,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915901488] [2024-11-24 02:10:28,974 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:10:28,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:10:28,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b44b8d71-5d60-41f7-a1ae-ac8b41bf9459/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:10:28,976 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b44b8d71-5d60-41f7-a1ae-ac8b41bf9459/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:10:28,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b44b8d71-5d60-41f7-a1ae-ac8b41bf9459/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 02:10:29,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:10:29,473 INFO L256 TraceCheckSpWp]: Trace formula consists of 1101 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 02:10:29,484 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:10:30,041 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 5690 proven. 75 refuted. 0 times theorem prover too weak. 7195 trivial. 0 not checked. [2024-11-24 02:10:30,041 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:10:30,869 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 165 proven. 75 refuted. 0 times theorem prover too weak. 12720 trivial. 0 not checked. [2024-11-24 02:10:30,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915901488] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:10:30,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:10:30,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-24 02:10:30,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141094084] [2024-11-24 02:10:30,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:10:30,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 02:10:30,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:10:30,874 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 02:10:30,874 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 02:10:30,876 INFO L87 Difference]: Start difference. First operand 8261 states and 13168 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 2 states have call successors, (106), 2 states have call predecessors, (106), 4 states have return successors, (107), 2 states have call predecessors, (107), 2 states have call successors, (107) [2024-11-24 02:10:32,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:10:32,324 INFO L93 Difference]: Finished difference Result 12658 states and 20136 transitions. [2024-11-24 02:10:32,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 02:10:32,325 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 2 states have call successors, (106), 2 states have call predecessors, (106), 4 states have return successors, (107), 2 states have call predecessors, (107), 2 states have call successors, (107) Word has length 500 [2024-11-24 02:10:32,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:10:32,368 INFO L225 Difference]: With dead ends: 12658 [2024-11-24 02:10:32,368 INFO L226 Difference]: Without dead ends: 4400 [2024-11-24 02:10:32,403 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1006 GetRequests, 997 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-11-24 02:10:32,404 INFO L435 NwaCegarLoop]: 247 mSDtfsCounter, 346 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-24 02:10:32,404 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 578 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-24 02:10:32,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4400 states. [2024-11-24 02:10:33,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4400 to 2746. [2024-11-24 02:10:33,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2746 states, 1871 states have (on average 1.4216996258685195) internal successors, (2660), 1893 states have internal predecessors, (2660), 834 states have call successors, (834), 40 states have call predecessors, (834), 40 states have return successors, (834), 812 states have call predecessors, (834), 834 states have call successors, (834) [2024-11-24 02:10:33,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2746 states to 2746 states and 4328 transitions. [2024-11-24 02:10:33,066 INFO L78 Accepts]: Start accepts. Automaton has 2746 states and 4328 transitions. Word has length 500 [2024-11-24 02:10:33,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:10:33,067 INFO L471 AbstractCegarLoop]: Abstraction has 2746 states and 4328 transitions. [2024-11-24 02:10:33,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 2 states have call successors, (106), 2 states have call predecessors, (106), 4 states have return successors, (107), 2 states have call predecessors, (107), 2 states have call successors, (107) [2024-11-24 02:10:33,068 INFO L276 IsEmpty]: Start isEmpty. Operand 2746 states and 4328 transitions. [2024-11-24 02:10:33,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2024-11-24 02:10:33,074 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:10:33,075 INFO L218 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:10:33,089 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b44b8d71-5d60-41f7-a1ae-ac8b41bf9459/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-24 02:10:33,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b44b8d71-5d60-41f7-a1ae-ac8b41bf9459/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:10:33,276 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:10:33,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:10:33,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1881761632, now seen corresponding path program 1 times [2024-11-24 02:10:33,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:10:33,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689187509] [2024-11-24 02:10:33,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:10:33,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:10:33,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:10:33,885 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2024-11-24 02:10:33,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:10:33,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689187509] [2024-11-24 02:10:33,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689187509] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:10:33,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:10:33,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 02:10:33,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780277475] [2024-11-24 02:10:33,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:10:33,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 02:10:33,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:10:33,888 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 02:10:33,888 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:10:33,888 INFO L87 Difference]: Start difference. First operand 2746 states and 4328 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-11-24 02:10:34,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:10:34,561 INFO L93 Difference]: Finished difference Result 6505 states and 10258 transitions. [2024-11-24 02:10:34,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 02:10:34,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 503 [2024-11-24 02:10:34,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:10:34,601 INFO L225 Difference]: With dead ends: 6505 [2024-11-24 02:10:34,602 INFO L226 Difference]: Without dead ends: 3762 [2024-11-24 02:10:34,616 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:10:34,619 INFO L435 NwaCegarLoop]: 418 mSDtfsCounter, 189 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 02:10:34,620 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 744 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 02:10:34,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3762 states. [2024-11-24 02:10:35,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3762 to 3756. [2024-11-24 02:10:35,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3756 states, 2540 states have (on average 1.415748031496063) internal successors, (3596), 2569 states have internal predecessors, (3596), 1159 states have call successors, (1159), 56 states have call predecessors, (1159), 56 states have return successors, (1159), 1130 states have call predecessors, (1159), 1159 states have call successors, (1159) [2024-11-24 02:10:35,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3756 states to 3756 states and 5914 transitions. [2024-11-24 02:10:35,655 INFO L78 Accepts]: Start accepts. Automaton has 3756 states and 5914 transitions. Word has length 503 [2024-11-24 02:10:35,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:10:35,657 INFO L471 AbstractCegarLoop]: Abstraction has 3756 states and 5914 transitions. [2024-11-24 02:10:35,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-11-24 02:10:35,658 INFO L276 IsEmpty]: Start isEmpty. Operand 3756 states and 5914 transitions. [2024-11-24 02:10:35,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2024-11-24 02:10:35,669 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:10:35,669 INFO L218 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:10:35,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 02:10:35,670 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:10:35,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:10:35,671 INFO L85 PathProgramCache]: Analyzing trace with hash -2066663592, now seen corresponding path program 1 times [2024-11-24 02:10:35,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:10:35,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898786245] [2024-11-24 02:10:35,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:10:35,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:10:36,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:10:37,296 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2024-11-24 02:10:37,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:10:37,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898786245] [2024-11-24 02:10:37,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898786245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:10:37,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:10:37,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 02:10:37,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862686962] [2024-11-24 02:10:37,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:10:37,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 02:10:37,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:10:37,303 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 02:10:37,303 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 02:10:37,303 INFO L87 Difference]: Start difference. First operand 3756 states and 5914 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-11-24 02:10:42,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:10:42,736 INFO L93 Difference]: Finished difference Result 15477 states and 24256 transitions. [2024-11-24 02:10:42,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 02:10:42,737 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 504 [2024-11-24 02:10:42,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:10:42,816 INFO L225 Difference]: With dead ends: 15477 [2024-11-24 02:10:42,816 INFO L226 Difference]: Without dead ends: 11724 [2024-11-24 02:10:42,833 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-24 02:10:42,834 INFO L435 NwaCegarLoop]: 718 mSDtfsCounter, 895 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 732 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 2074 SdHoareTripleChecker+Invalid, 1312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 732 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-24 02:10:42,834 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [895 Valid, 2074 Invalid, 1312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [732 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-24 02:10:42,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11724 states. [2024-11-24 02:10:44,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11724 to 9888. [2024-11-24 02:10:44,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9888 states, 6446 states have (on average 1.3785293205088427) internal successors, (8886), 6535 states have internal predecessors, (8886), 3292 states have call successors, (3292), 149 states have call predecessors, (3292), 149 states have return successors, (3292), 3203 states have call predecessors, (3292), 3292 states have call successors, (3292) [2024-11-24 02:10:44,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9888 states to 9888 states and 15470 transitions. [2024-11-24 02:10:44,977 INFO L78 Accepts]: Start accepts. Automaton has 9888 states and 15470 transitions. Word has length 504 [2024-11-24 02:10:44,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:10:44,979 INFO L471 AbstractCegarLoop]: Abstraction has 9888 states and 15470 transitions. [2024-11-24 02:10:44,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-11-24 02:10:44,979 INFO L276 IsEmpty]: Start isEmpty. Operand 9888 states and 15470 transitions. [2024-11-24 02:10:44,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2024-11-24 02:10:44,989 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:10:44,990 INFO L218 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:10:44,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 02:10:44,990 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:10:44,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:10:44,991 INFO L85 PathProgramCache]: Analyzing trace with hash 2094290198, now seen corresponding path program 1 times [2024-11-24 02:10:44,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:10:44,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612337261] [2024-11-24 02:10:44,991 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:10:44,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:10:45,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:10:46,533 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2024-11-24 02:10:46,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:10:46,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612337261] [2024-11-24 02:10:46,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612337261] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:10:46,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:10:46,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 02:10:46,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533925669] [2024-11-24 02:10:46,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:10:46,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 02:10:46,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:10:46,536 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 02:10:46,536 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 02:10:46,537 INFO L87 Difference]: Start difference. First operand 9888 states and 15470 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-11-24 02:10:53,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:10:53,520 INFO L93 Difference]: Finished difference Result 32469 states and 50711 transitions. [2024-11-24 02:10:53,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 02:10:53,521 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 504 [2024-11-24 02:10:53,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:10:53,688 INFO L225 Difference]: With dead ends: 32469 [2024-11-24 02:10:53,688 INFO L226 Difference]: Without dead ends: 22584 [2024-11-24 02:10:53,735 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-24 02:10:53,736 INFO L435 NwaCegarLoop]: 606 mSDtfsCounter, 1010 mSDsluCounter, 1376 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1010 SdHoareTripleChecker+Valid, 1982 SdHoareTripleChecker+Invalid, 1084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-24 02:10:53,737 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1010 Valid, 1982 Invalid, 1084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-24 02:10:53,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22584 states. [2024-11-24 02:10:58,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22584 to 20488. [2024-11-24 02:10:58,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20488 states, 13431 states have (on average 1.3833668379122925) internal successors, (18580), 13632 states have internal predecessors, (18580), 6738 states have call successors, (6738), 318 states have call predecessors, (6738), 318 states have return successors, (6738), 6537 states have call predecessors, (6738), 6738 states have call successors, (6738) [2024-11-24 02:10:58,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20488 states to 20488 states and 32056 transitions. [2024-11-24 02:10:58,838 INFO L78 Accepts]: Start accepts. Automaton has 20488 states and 32056 transitions. Word has length 504 [2024-11-24 02:10:58,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:10:58,839 INFO L471 AbstractCegarLoop]: Abstraction has 20488 states and 32056 transitions. [2024-11-24 02:10:58,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-11-24 02:10:58,840 INFO L276 IsEmpty]: Start isEmpty. Operand 20488 states and 32056 transitions. [2024-11-24 02:10:58,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2024-11-24 02:10:58,859 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:10:58,859 INFO L218 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:10:58,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 02:10:58,860 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:10:58,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:10:58,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1417950808, now seen corresponding path program 1 times [2024-11-24 02:10:58,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:10:58,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186436842] [2024-11-24 02:10:58,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:10:58,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:10:59,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:10:59,757 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 111 proven. 129 refuted. 0 times theorem prover too weak. 12720 trivial. 0 not checked. [2024-11-24 02:10:59,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:10:59,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186436842] [2024-11-24 02:10:59,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186436842] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:10:59,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980846677] [2024-11-24 02:10:59,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:10:59,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:10:59,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b44b8d71-5d60-41f7-a1ae-ac8b41bf9459/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:10:59,761 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b44b8d71-5d60-41f7-a1ae-ac8b41bf9459/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:10:59,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b44b8d71-5d60-41f7-a1ae-ac8b41bf9459/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 02:11:00,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:11:00,176 INFO L256 TraceCheckSpWp]: Trace formula consists of 1108 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-24 02:11:00,187 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:11:01,173 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 4571 proven. 93 refuted. 0 times theorem prover too weak. 8296 trivial. 0 not checked. [2024-11-24 02:11:01,173 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:11:02,286 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 381 proven. 96 refuted. 0 times theorem prover too weak. 12483 trivial. 0 not checked. [2024-11-24 02:11:02,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980846677] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:11:02,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:11:02,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 10] total 19 [2024-11-24 02:11:02,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802490093] [2024-11-24 02:11:02,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:11:02,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-24 02:11:02,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:11:02,292 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-24 02:11:02,292 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2024-11-24 02:11:02,292 INFO L87 Difference]: Start difference. First operand 20488 states and 32056 transitions. Second operand has 19 states, 19 states have (on average 11.473684210526315) internal successors, (218), 19 states have internal predecessors, (218), 6 states have call successors, (141), 3 states have call predecessors, (141), 7 states have return successors, (143), 6 states have call predecessors, (143), 6 states have call successors, (143) [2024-11-24 02:11:08,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:11:08,402 INFO L93 Difference]: Finished difference Result 37412 states and 58183 transitions. [2024-11-24 02:11:08,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-24 02:11:08,403 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 11.473684210526315) internal successors, (218), 19 states have internal predecessors, (218), 6 states have call successors, (141), 3 states have call predecessors, (141), 7 states have return successors, (143), 6 states have call predecessors, (143), 6 states have call successors, (143) Word has length 504 [2024-11-24 02:11:08,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:11:08,522 INFO L225 Difference]: With dead ends: 37412 [2024-11-24 02:11:08,523 INFO L226 Difference]: Without dead ends: 16927 [2024-11-24 02:11:08,579 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1029 GetRequests, 996 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=301, Invalid=889, Unknown=0, NotChecked=0, Total=1190 [2024-11-24 02:11:08,580 INFO L435 NwaCegarLoop]: 235 mSDtfsCounter, 793 mSDsluCounter, 1217 mSDsCounter, 0 mSdLazyCounter, 1187 mSolverCounterSat, 747 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 1452 SdHoareTripleChecker+Invalid, 1934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 747 IncrementalHoareTripleChecker+Valid, 1187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-24 02:11:08,580 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 1452 Invalid, 1934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [747 Valid, 1187 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-24 02:11:08,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16927 states. [2024-11-24 02:11:11,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16927 to 11606. [2024-11-24 02:11:11,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11606 states, 7789 states have (on average 1.3710360765181666) internal successors, (10679), 7888 states have internal predecessors, (10679), 3600 states have call successors, (3600), 216 states have call predecessors, (3600), 216 states have return successors, (3600), 3501 states have call predecessors, (3600), 3600 states have call successors, (3600) [2024-11-24 02:11:11,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11606 states to 11606 states and 17879 transitions. [2024-11-24 02:11:11,629 INFO L78 Accepts]: Start accepts. Automaton has 11606 states and 17879 transitions. Word has length 504 [2024-11-24 02:11:11,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:11:11,630 INFO L471 AbstractCegarLoop]: Abstraction has 11606 states and 17879 transitions. [2024-11-24 02:11:11,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.473684210526315) internal successors, (218), 19 states have internal predecessors, (218), 6 states have call successors, (141), 3 states have call predecessors, (141), 7 states have return successors, (143), 6 states have call predecessors, (143), 6 states have call successors, (143) [2024-11-24 02:11:11,631 INFO L276 IsEmpty]: Start isEmpty. Operand 11606 states and 17879 transitions. [2024-11-24 02:11:11,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2024-11-24 02:11:11,642 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:11:11,642 INFO L218 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:11:11,656 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b44b8d71-5d60-41f7-a1ae-ac8b41bf9459/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-24 02:11:11,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b44b8d71-5d60-41f7-a1ae-ac8b41bf9459/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-24 02:11:11,843 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:11:11,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:11:11,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1882192190, now seen corresponding path program 1 times [2024-11-24 02:11:11,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:11:11,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964408976] [2024-11-24 02:11:11,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:11:11,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:11:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:11:13,322 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2024-11-24 02:11:13,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:11:13,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964408976] [2024-11-24 02:11:13,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964408976] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:11:13,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:11:13,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 02:11:13,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507162547] [2024-11-24 02:11:13,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:11:13,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 02:11:13,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:11:13,329 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 02:11:13,330 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-24 02:11:13,330 INFO L87 Difference]: Start difference. First operand 11606 states and 17879 transitions. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-11-24 02:11:22,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:11:22,321 INFO L93 Difference]: Finished difference Result 30582 states and 46906 transitions. [2024-11-24 02:11:22,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-24 02:11:22,322 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 505 [2024-11-24 02:11:22,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:11:22,432 INFO L225 Difference]: With dead ends: 30582 [2024-11-24 02:11:22,432 INFO L226 Difference]: Without dead ends: 21810 [2024-11-24 02:11:22,462 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2024-11-24 02:11:22,463 INFO L435 NwaCegarLoop]: 450 mSDtfsCounter, 1747 mSDsluCounter, 2091 mSDsCounter, 0 mSdLazyCounter, 1303 mSolverCounterSat, 1022 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1747 SdHoareTripleChecker+Valid, 2541 SdHoareTripleChecker+Invalid, 2325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1022 IncrementalHoareTripleChecker+Valid, 1303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-24 02:11:22,463 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1747 Valid, 2541 Invalid, 2325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1022 Valid, 1303 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-24 02:11:22,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21810 states. [2024-11-24 02:11:27,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21810 to 18557. [2024-11-24 02:11:27,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18557 states, 12280 states have (on average 1.3537459283387623) internal successors, (16624), 12444 states have internal predecessors, (16624), 5895 states have call successors, (5895), 381 states have call predecessors, (5895), 381 states have return successors, (5895), 5731 states have call predecessors, (5895), 5895 states have call successors, (5895) [2024-11-24 02:11:27,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18557 states to 18557 states and 28414 transitions. [2024-11-24 02:11:27,145 INFO L78 Accepts]: Start accepts. Automaton has 18557 states and 28414 transitions. Word has length 505 [2024-11-24 02:11:27,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:11:27,146 INFO L471 AbstractCegarLoop]: Abstraction has 18557 states and 28414 transitions. [2024-11-24 02:11:27,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-11-24 02:11:27,146 INFO L276 IsEmpty]: Start isEmpty. Operand 18557 states and 28414 transitions. [2024-11-24 02:11:27,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2024-11-24 02:11:27,163 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:11:27,163 INFO L218 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:11:27,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-24 02:11:27,163 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:11:27,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:11:27,165 INFO L85 PathProgramCache]: Analyzing trace with hash -293844288, now seen corresponding path program 1 times [2024-11-24 02:11:27,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:11:27,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088876737] [2024-11-24 02:11:27,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:11:27,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:11:27,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:11:28,734 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2024-11-24 02:11:28,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:11:28,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088876737] [2024-11-24 02:11:28,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088876737] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:11:28,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:11:28,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 02:11:28,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920389024] [2024-11-24 02:11:28,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:11:28,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 02:11:28,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:11:28,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 02:11:28,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-24 02:11:28,738 INFO L87 Difference]: Start difference. First operand 18557 states and 28414 transitions. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-11-24 02:11:38,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:11:38,856 INFO L93 Difference]: Finished difference Result 61884 states and 94897 transitions. [2024-11-24 02:11:38,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 02:11:38,857 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 505 [2024-11-24 02:11:38,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:11:39,045 INFO L225 Difference]: With dead ends: 61884 [2024-11-24 02:11:39,045 INFO L226 Difference]: Without dead ends: 43225 [2024-11-24 02:11:39,113 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2024-11-24 02:11:39,114 INFO L435 NwaCegarLoop]: 577 mSDtfsCounter, 1050 mSDsluCounter, 1666 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1050 SdHoareTripleChecker+Valid, 2243 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-24 02:11:39,114 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1050 Valid, 2243 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-24 02:11:39,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43225 states. [2024-11-24 02:11:47,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43225 to 31407. [2024-11-24 02:11:47,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31407 states, 21477 states have (on average 1.3764026633142432) internal successors, (29561), 21733 states have internal predecessors, (29561), 9318 states have call successors, (9318), 611 states have call predecessors, (9318), 611 states have return successors, (9318), 9062 states have call predecessors, (9318), 9318 states have call successors, (9318) [2024-11-24 02:11:47,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31407 states to 31407 states and 48197 transitions. [2024-11-24 02:11:47,580 INFO L78 Accepts]: Start accepts. Automaton has 31407 states and 48197 transitions. Word has length 505 [2024-11-24 02:11:47,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:11:47,581 INFO L471 AbstractCegarLoop]: Abstraction has 31407 states and 48197 transitions. [2024-11-24 02:11:47,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-11-24 02:11:47,581 INFO L276 IsEmpty]: Start isEmpty. Operand 31407 states and 48197 transitions. [2024-11-24 02:11:47,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2024-11-24 02:11:47,596 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:11:47,597 INFO L218 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:11:47,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-24 02:11:47,597 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:11:47,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:11:47,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1167419482, now seen corresponding path program 1 times [2024-11-24 02:11:47,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:11:47,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931796787] [2024-11-24 02:11:47,598 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:11:47,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:11:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:11:48,302 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 117 proven. 123 refuted. 0 times theorem prover too weak. 12720 trivial. 0 not checked. [2024-11-24 02:11:48,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:11:48,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931796787] [2024-11-24 02:11:48,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931796787] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:11:48,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480084775] [2024-11-24 02:11:48,303 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:11:48,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:11:48,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b44b8d71-5d60-41f7-a1ae-ac8b41bf9459/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:11:48,306 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b44b8d71-5d60-41f7-a1ae-ac8b41bf9459/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:11:48,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b44b8d71-5d60-41f7-a1ae-ac8b41bf9459/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 02:11:48,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:11:48,750 INFO L256 TraceCheckSpWp]: Trace formula consists of 1109 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-24 02:11:48,761 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:11:49,227 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 4110 proven. 45 refuted. 0 times theorem prover too weak. 8805 trivial. 0 not checked. [2024-11-24 02:11:49,227 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:11:49,970 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 195 proven. 45 refuted. 0 times theorem prover too weak. 12720 trivial. 0 not checked. [2024-11-24 02:11:49,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480084775] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:11:49,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:11:49,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 11 [2024-11-24 02:11:49,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933564949] [2024-11-24 02:11:49,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:11:49,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 02:11:49,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:11:49,975 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 02:11:49,975 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-24 02:11:49,975 INFO L87 Difference]: Start difference. First operand 31407 states and 48197 transitions. Second operand has 11 states, 11 states have (on average 18.90909090909091) internal successors, (208), 11 states have internal predecessors, (208), 4 states have call successors, (137), 2 states have call predecessors, (137), 4 states have return successors, (139), 4 states have call predecessors, (139), 4 states have call successors, (139) [2024-11-24 02:11:59,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:11:59,853 INFO L93 Difference]: Finished difference Result 71485 states and 108916 transitions. [2024-11-24 02:11:59,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-24 02:11:59,854 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 18.90909090909091) internal successors, (208), 11 states have internal predecessors, (208), 4 states have call successors, (137), 2 states have call predecessors, (137), 4 states have return successors, (139), 4 states have call predecessors, (139), 4 states have call successors, (139) Word has length 505 [2024-11-24 02:11:59,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:12:00,070 INFO L225 Difference]: With dead ends: 71485 [2024-11-24 02:12:00,071 INFO L226 Difference]: Without dead ends: 40122 [2024-11-24 02:12:00,167 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1040 GetRequests, 1007 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=357, Invalid=833, Unknown=0, NotChecked=0, Total=1190 [2024-11-24 02:12:00,167 INFO L435 NwaCegarLoop]: 383 mSDtfsCounter, 563 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 757 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 1893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 757 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-24 02:12:00,168 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [567 Valid, 1200 Invalid, 1893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [757 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-24 02:12:00,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40122 states.